Technical Information Deltapilot M FMB50/51/52/53 Hydrostatic level measurement Pressure sensor with the CONTITE TM measuring cell Condensate-resistant offering long-term stability; communication via HART, PROFIBUS PA or FOUNDATION Fieldbus. Application The hydrostatic pressure sensor is used for the following measuring tasks: Hydrostatic pressure measurement in liquids and paste-like media in all areas of process engineering, process measuring technology, pharmaceuticals and the food industry Level, volume or mass measurements in liquids Your benefits Very good reproducibility and long-term stability Turn down 100:1 Hermetically sealed CONTITE TM measuring cell: Condensate-resistant and climatic-proofed High reference accuracy: ±0.2 %, optionally ±0.1 % Minimum temperature effects End-to-end modularity for differential pressure, hydrostatics and pressure (Deltabar M Deltapilot M Cerabar M), e.g. replaceable display universal electronics Easy commissioning without the need for an operating tool Easy and safe menu-guided operation on-site via display module via 4 to 20 ma with HART via PROFIBUS PA via FOUNDATION Fieldbus Wide range of approvals (e.g. ATEX, FM, CSA, etc.) for international use Usage in drinking water: KTW, NSF Used for process pressure monitoring up to SIL2, certified to IEC 61508 Edition 2.0 and IEC 61511 by TÜV NORD TI00437P/00/EN/17.12 No. 71190904
Table of contents Function and system design..................... 4 Device selection...................................... 4 Measuring principle................................... 6 Level measurement in closed tanks with pressure overlay....... 7 Density measurement.................................. 7 Level measurement with automatic density correction (with media changing in the tank).................................. 8 Electrical differential pressure measurement with gauge pressure sensors............................................ 8 System integration.................................... 8 Communication protocol............................... 9 Input..................................... 10 Measured variable................................... 10 Measuring range..................................... 10 Explanation of terms.................................. 11 Output.................................... 12 Output signal....................................... 12 Signal range 4 to 20 ma HART........................ 12 Signal on alarm..................................... 12 Load - 4 to 20 ma HART.............................. 12 Resolution......................................... 12 Dead time, time constant.............................. 13 Dynamic behavior: current output....................... 13 Dynamic behavior: HART............................. 13 Dynamic behavior: PROFIBUS PA........................ 14 Dynamic behavior: FOUNDATION Fieldbus................ 14 Damping.......................................... 14 Data of the FOUNDATION Fieldbus interface............... 15 Power supply............................... 17 Electrical connection................................. 17 Supply voltage...................................... 20 Start-up current HART................................ 20 Current consumption................................. 20 Cable entry........................................ 20 Cable specification................................... 20 Residual ripple...................................... 20 Influence of power supply.............................. 20 Performance characteristics.................... 21 Reference operating conditions.......................... 21 Long-term stability................................... 21 Influence of orientation............................... 21 Warm-up period..................................... 21 Calibration position.................................. 21 Reference accuracy................................... 21 Total performance................................... 22 Total error......................................... 22 Thermal change in the zero output and the output span....... 22 Operating conditions (installation).............. 23 General installation instructions......................... 23 FMB50........................................... 23 FMB51/FMB52/FMB53.............................. 23 Supplementary installation instructions.................... 24 Wall and pipe mounting............................... 24 "Separate housing" version............................ 25 Oxygen applications.................................. 26 PWIS cleaning...................................... 26 Applications with hydrogen............................ 26 Special measuring cells for acids, alkalis or sea water (not FMB50)....................................... 26 Operating conditions (environment)............. 27 Ambient temperature range............................ 27 Storage temperature range............................. 27 Degree of protection................................. 27 Climate class....................................... 27 Vibration resistance.................................. 27 Electromagnetic compatibility.......................... 27 Overvoltage protection (optional)........................ 28 Operating conditions (process)................. 29 Process temperature range............................. 29 Lateral load FMB51 (static)............................ 29 Pressure specifications................................ 29 Mechanical construction...................... 30 F31 aluminum housing dimensions...................... 30 F15 stainless steel housing dimensions (hygienic)............ 30 Process connections FMB50 (compact version).............. 30 Process connections FMB50 (compact version) - continued.... 31 Process connections FMB50 (compact version) - continued.... 32 Process connections FMB50 (compact version) - continued.... 33 Process connections FMB50 (compact version) - continued.... 33 Process connections FMB50 (compact version) - continued.... 34 Process connections FMB50 (compact version) - continued.... 34 Process connections FMB50 (compact version) - continued.... 35 Process connections FMB51 (rod version)................. 36 Process connections FMB52 (cable version)................ 37 Dimensions of Deltapilot M FMB53 (suspension clamp and mounting bracket)................................... 38 Wall and pipe mounting with "Separate housing" version...... 39 Weight........................................... 40 Material (not wetted)................................. 43 Material (wetted).................................... 46 Human interface............................ 48 Operating elements.................................. 48 Onsite operation.................................... 49 Remote operation................................... 50 Hardware and software for onsite and remote operation....... 51 Certificates and approvals..................... 52 CE mark.......................................... 52 Ex approvals....................................... 52 Suitability for hygienic processes......................... 52 Pharma (CoC)...................................... 52 Functional safety SIL................................. 52 Marine approval..................................... 52 Standards and guidelines.............................. 52 Pressure Equipment Directive (PED)..................... 52 Drinking water approval............................... 52 2 Endress+Hauser
North-American practice for installation of process seals....... 52 Ordering information........................ 53 FMB50........................................... 53 FMB50 (continued).................................. 54 FMB50 (continued).................................. 55 FMB50 (continued).................................. 56 FMB51........................................... 57 FMB51 (continued).................................. 58 FMB51 (continued).................................. 59 FMB52........................................... 60 FMB52 (continued).................................. 61 FMB52 (continued).................................. 62 FMB53........................................... 63 FMB53 (continued).................................. 64 FMB53 (continued).................................. 65 Documentation............................. 66 Technical Information................................ 66 Operating Instructions................................ 66 Brief Operating Instructions............................ 66 Functional safety manual (SIL).......................... 66 Safety Instructions................................... 66 Installation/Control Drawings.......................... 67 Overfill protection................................... 67 Accessories................................ 68 Suspension clamp (FMB53 only)........................ 68 Extension cable shortening kit (FMB53 only)............... 68 M12 connector..................................... 68 Welding necks and Weld-in tool flanges................... 68 Adapter Uni........................................ 69 Configuration data sheet...................... 70 Level............................................. 70 Pressure........................................... 71 3 Endress+Hauser
Function and system design Device selection Deltapilot M Product family FMB50 FMB51 FMB52 FMB53 P01-FMB5xxxx-14-xx-xx-xx-000 P01-FMB5xxxx-14-xx-xx-xx-001 P01-FMB5xxxx-14-xx-xx-xx-002 P01-FMB5xxxx-14-xx-xx-xx-003 Compact version Rod version Cable version Cable version with mounting clamp Field of application Level measurement Pressure measurement Industries Food, pharmaceuticals, chemicals Environment (freshwater and wastewater) Process connections Thread Flanges Flush-mounted hygienic connections Thread Flanges Thread Flanges Suspension clamp Measuring ranges OPL 1) From 0.1 to +0.1 (-1,5 to +1,5 psi) bar to 1 bar to +10 bar (-15 to 150 psi) Max. 40 bar (600 psi) Process temperature range 10 to +100 C (+14 to +212 F) (+135 C (275 F) for 30 minutes maximum) 10 to +85 C (+14 to +185 F) With PE cable: 10 to +70 C (+14 to +158 F) With FEP cable: 10 to +80 C (+14 to +176 F) Ambient temperature range Without LCD display: -40 to +85 C (-40 to +185 F) With LCD display: -20 to +70 C (-4 to +158 F) (extended temperature application range -40 to 85 C (-40 to +158 F) with restrictions in optical properties such as display speed and contrast) Separate housing: 20 to +60 C ( 4 to +140 F) Reference accuracy 0.2 % (option 0.1 %) depends on the measuring range ä 21 Supply voltage Output Options Specialties 11.5 to 45 V DC (versions with plug-in connection 35 V DC) For intrinsically safe device versions: 11.5 to 30 V DC 4 to 20 ma with superimposed HART protocol, PROFIBUS PA or FOUNDATION Fieldbus Gold/rhodium-coated process isolating diaphragm 3.1 inspection certificate 3A approval and EHEDG approval for FMB50 Specific firmware versions Initial device settings can be ordered Separate housing Absolute resistance to condensate thanks to hermetically sealed CONTITE TM cell Maximum flexibility thanks to modular design Special cleaning of the transmitter to remove paint-wetting substances, for use in paint shops 1) OPL = over pressure limit; depends on the lowest-rated element, with regard to pressure, of the selected components 4 Endress+Hauser
FMB50/51/52 universal application Modular probe program to ensure optimum process adaptation FMB50 compact version: installation in the tank from below or from the side FMB51/52 rod and cable extension: installation from above, i.e. easy to retrofit ground tanks, no additional opening in the tank floor FMB50 optimized for the food-processing and pharmaceutical industry All typical flush-mounted process connections can be supplied Welding flanges Stainless steel housing All the sanitary process connections are gap-free and can be cleaned so that the unit is free of residue, e.g. CIP cleaning USDA/H1-approved transfer liquid as per FDA Directive 3A approval or EHEDG approvals 74 - TYPE EL February 2010 P01-DB5xxxxx-12-xx-xx-xx-004 FMB53 for level measurement in water and wastewater The housing with the electronic insert is mounted outside shafts and tanks in such a way that it is protected from flooding. The extension cable is secured with a suspension clamp. The measuring cell tube made of stainless steel (AISI 316L) and the Alloy process isolating diaphragm allow use in aggressive media such as wastewater for example. Extension cable up to 400 m (1312 ft) in length (up to 100 m (328 ft) in Ex-areas) without strain relief. Special measuring cell with gold/rhodium coating for applications in which severe hydrogen formation can occur (e.g. digested sludge); ä 26. Special measuring cell with gold/platinum coating for acids, alkalis or sea water; ä 26. Endress+Hauser 5
Measuring principle p atm p atm 3 2 1 p p ges p mess = atm p (p atm + p ) p mess = hydr. atm p hydr. h h h = p p g p = p atm + p ges hydr. p ges p atm Deltapilot M hydrostatic level measurement and measuring principle 1 Rear isolating membrane of the CONTITE measuring cell 2 Measuring element 3 Process isolating diaphragm g Gravitational acceleration h Level height p ges Total pressure = hydrostatic pressure + atmospheric pressure p atm Atmospheric pressure p hydr. Hydrostatic pressure p mess Measured pressure in the measuring cell = hydrostatic pressure ρ Density of the medium P01-FMB5xxxx-15-xx-xx-xx-004 Due to its weight, a liquid column creates hydrostatic pressure. If the density is constant, the hydrostatic pressure depends solely on the height h of the liquid column. The CONTITE measuring cell, which works on the principle of the gauge pressure sensor, constitutes the core of Deltapilot M. In contrast to conventional gauge pressure sensors, the precision measuring element (2) in the CONTITE measuring cell is absolutely protected, situated between the process isolating diaphragm (3) and the rear isolating membrane (1). Thanks to this hermetic sealing of the measuring element, the CONTITE measuring cell is absolutely insensitive to condensate/condensation and aggressive gases. The pressure applied is transferred from the process isolating diaphragm to the measuring element by means of an oil without any loss in pressure. Two temperature sensors, which measure the distribution of temperature in the cell, are arranged between the process isolating diaphragm and measuring element. The electronics can compensate any measuring errors resulting from fluctuations in temperature with these measured temperature values. A linearization function with max. 32 points, based on a table entered either manually or semi-automatically, can be activated locally or remotely. This function facilitates measurement in engineering units, and provides a linear output signal for spherical and horizontal cylindrical tanks, and vessels with a conical outlet. 6 Endress+Hauser
Level measurement in closed tanks with pressure overlay You can determine the differential pressure in tanks with pressure overlay using two Deltapilot M. The pressure measured values of the two probes are sent to a signal processing unit such as Endress+Hauser RMA or a PLC. The signal processing unit or PLC determines the difference in pressure and uses this to calculate the level and the density where necessary. ➁ ➂ ➀ Level measurement in a closed tank with pressure overlay 1 Probe 1 measures the total pressure (hydrostatic pressure and top pressure) 2 Probe 2 measures the top pressure 3 Signal processing unit determines the difference in pressure and uses this to calculate the level P01-FMB5xxxx-15-xx-xx-xx-005 Note! When selecting the Deltapilot M probes, make sure you select measuring ranges that are sufficiently wide ( see example). The process isolating diaphragm of probe 2 must not be flooded. This generates additional hydrostatic pressure which distorts the measurement. The ratio of hydrostatic pressure to top pressure should be no more than 1:6. Example: Max. hydrostatic pressure = 0.6 bar (9 psi) Max. top pressure (probe 2) = 0.3 bar (4.5 psi) Max. total pressure, measured with probe 1 = 0.3 bar (4..5 psi) + 0.6 bar (9 psi) = 0.9 bar (13.5 psi) Measuring cell to be selected: 0 to 1.2 bar (0 to 18 psi) Max. pressure, measured with probe 2: 0.3 bar (4.5 psi) Measuring cell to be selected: 0 to 0.4 bar (0 to 6 psi) Density measurement You can measure the density in tanks with pressure overlay using two Deltapilot M and a signal processing unit or a PLC. The signal processing unit or the PLC calculates the density from the known distance Δh between the two probes and the two measured values p 1 and p 2. ➂ ➁ p 2 h ➀ p 1 Level measurement in a closed tank with pressure overlay P01-FMB5xxxx-15-xx-xx-xx-006 1 Deltapilot M determines pressure measured value p 1 2 Deltapilot M determines pressure measured value p 2 3 Signal processing unit determines the density from the two measured values p 1 and p 2 and the distance Δh Endress+Hauser 7
Level measurement with automatic density correction (with media changing in the tank) Level measurement with automatic density correction is possible in conjunction with a limit switch such as Liquiphant and a PLC. The limit switch always switches at the same level. In the switch point, the signal processing unit determines the corrected density from the pressure of the Deltapilot M currently measured and the known distance between Deltapilot M and the limit switch. The signal processing unit then calculates the level from the new density and the measured pressure of the Deltapilot M. ➁ ➂ h ➀ Level measurement with automatic density correction 1 Deltapilot M 2 Liquiphant 3 PLC P01-FMB5xxxx-15-xx-xx-xx-007 Electrical differential pressure measurement with gauge pressure sensors Deltapilot M FXN 520 FXN 520 Fieldgate FXA520 Multidrop-Connector FXN520 ➀ ➁ ➀ P01-FMB5xxxx-14-xx-xx-xx-004 1 Shut-off valves 2 e.g. filter In the example given, two Deltapilot M devices (each with a gauge pressure sensor) are interconnected. The pressure difference can thus be measured using two independent Deltapilot M devices. Caution! If using intrinsically safe devices, strict compliance with the rules for interconnecting intrinsically safe circuits as stipulated in IEC60079-14 (proof of intrinsic safety) is mandatory. System integration The device can be fitted with a tag name and a preset bus address, see ä 53 ff "Ordering information" feature 895 "Identification:" version "Z1" and "Z2". 8 Endress+Hauser
Communication protocol 4 to 20 ma with HART communication protocol PROFIBUS PA The Endress+Hauser devices meet the requirements of the FISCO model. Due to the low current consumption of 11 ma ± 1 ma, the following number of devices can be operated on one bus segment if installing as per FISCO: up to 8 Deltapilot M for Ex ia, CSA IS and FM IS applications up to 31 Deltapilot M for all other applications, e.g. in non-hazardous areas, Ex na, etc. Further information on PROFIBUS PA can be found in Operating Instructions BA00034S "PROFIBUS DP/ PA: Guidelines for planning and commissioning" and in the PNO Guideline. FOUNDATION Fieldbus The Endress+Hauser devices meet the requirements of the FISCO model. Due to the low current consumption of 16 ma ± 1 ma, the following number of devices can be operated on one bus segment if installing as per FISCO: up to 6 Deltapilot M for Ex ia, CSA IS and FM IS applications up to 22 Deltapilot M for all other applications, e.g. in non-hazardous areas, Ex na, etc. Further information on FOUNDATION Fieldbus, such as requirements for bus system components can be found in Operating Instructions BA00013S "FOUNDATION Fieldbus Overview". Endress+Hauser 9
Input Measured variable Hydrostatic pressure Measuring range Nominal value Range limit Smallest span MWP 2) OPL 3) Vacuum resistance 4) Version in the (factory calibration) 1) order code 5) lower (LRL) 6) upper (URL) Synthetic oil/ Inert oil [bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [bar abs (psi abs )] 0.1 (1.45) 0.1 (-1.5) +0.1 (+1.5) 0.01 (0.15) 2.7 (40.5) 4 (60) 0.01/0.04 1C 0.4 (6) 0.4 (-6) +0.4 (+6) 0.02 (0.3) 5.3 (79.5) 8 (120) (0,15/0,6) 1F 1.2 (18) 1 (-15) +1.2 (+18) 0.06 (1) 16 (240) 24 (360) 1H 4 (60) 1 (-15) +4 (+60) 0.2 (3) 16 (240) 24 (360) 1M 10 (150) 1 (-15) +10 (+150) 0.5 (7.5) 27 (405) 40 (600) 1P 1) Recommended Turn down: Max 100:1. Factory calibration Turn down: Max 20:1, higher on request. 2) The MWP (maximum working pressure) for the measuring device depends on the lowest-rated element, with regard to pressure, of the selected components, i.e. the process connection ( ä 30 ff) has to be taken into consideration in addition to the measuring cell ( see Table above). Pay attention to the pressuretemperature dependence also. For the appropriate standards and other information, see ä 29, Pressure specifications section. 3) OPL: over pressure limit; depends on the lowest-rated element, with regard to pressure, of the selected components 4) The vacuum resistance applies to the measuring cell at reference conditions. 5) ä 53 ff, "Ordering information" section, feature 70 "Sensor range" 6) By default, the device is set to a lower range limit of 0 bar. Please specify in the order if the lower range limit is to be set to a different default value. 10 Endress+Hauser
Explanation of terms Explanation of terms: turn down (TD), set span and span based on zero point Case 1: Lower range value (LRV) Upper range value (URV) Example: Lower range value (LRV) = 0 mbar Upper range value (URV) = 40 mbar (0.6 psi) Nominal value (URL) = 400 mbar (6 psi) Turn down: TD = URL / URV = 10:1 Set span: URV LRV = 40 mbar (0.6 psi) This span is based on the zero point. ➀ = ➁ LRL LRV URV URL 400 mbar 0 40 +400 mbar ➄ ➃ Example: 400 mbar (6 psi) measuring cell ➂ P01-DBxxxxxx-05-xx-xx-xx-001 Case 2: Lower range value (LRV) Upper range value (URV) Example: Lower range value (LRV) = 200 mbar (3 psi) Upper range value (URV) = 0 bar Nominal value (URL) = 400 mbar (6 psi) Turn down: TD = URL / (LRV) = 2:1 Set span: URV LRV = 200 mbar (3 psi) This span is based on the zero point. ➀ = ➁ LRL LRV URV URL 400 mbar 0 +400 mbar 200 mbar ➂ ➃ ➄ Example: 400 mbar (6 psi) measuring cell P01-DBxxxxxx-05-xx-xx-xx-002 1 Set span 2 Span based on zero point 3 Nominal value i upper range limit (URL) 4 Nominal measuring range 5 Sensor measuring range LRL Lower range limit URL Upper range limit LRV Lower range value URV Upper range value Endress+Hauser 11
Output Output signal Signal range 4to20mAHART 4 to 20 ma with superimposed digital communication protocol HART 6.0, 2-wire Digital communication signal PROFIBUS PA (Profile 3.02) Digital communication signal FOUNDATION Fieldbus 3.8 to 20.5 ma Signal on alarm As per NAMUR NE 43 4 to 20 ma HART Options: Max. alarm: can be set from 21 to 23 ma (Factory setting: 22 ma) Hold measured value: last measured value is held Min. alarm: 3.6 ma PROFIBUS PA: can be set in the Analog Input block, Options: Last Valid Out Value (factory setting), Fail-safe Value, Status Bad FOUNDATION Fieldbus: can be set in the Analog Input block, Options: Last Good Value, Fail-safe Value (factory setting), Wrong Value Load - 4 to 20 ma HART R Lmax [ ] 1456 1239 804 369 ➀ ➁ 11.5 20 30 40 45 U [V] U 11.5 V R Lmax 0.023 A P01-xxxxxxxx-05-xx-xx-xx-002 Load diagram 1 Power supply 11.5 to 30 V DC for intrinsically safe device versions 2 Power supply 11.5 to 45 V DC (versions with plug-in connector 35 V DC) for other types of protection and for uncertified device versions R Lmax Maximum load resistance U Supply voltage Note! When operating via a handheld terminal or via a PC with an operating program, a minimum communication resistance of 250 Ω must be taken into account. Resolution Current output: 1 μa Display HART: can be set (factory setting: presentation of the maximum accuracy of the transmitter) 12 Endress+Hauser
Dead time, time constant I 100 % 90 % 63 % t 1 t 2 t 3 t Presentation of the dead time and the time constant P01-xxxxxxxx-05-xx-xx-xx-036 Dynamic behavior: current output Type Dead time (t 1 ) [ms] Time constant T63 (= t 2 ) [ms] Time constant T90 (= t 3 ) [ms] max. FMB50 60 90 210 max. FMB51 FMB52 FMB53 500 250 - Dynamic behavior: HART Type Dead time (t 1 ) [ms] Dead time (t 1 ) [ms] + Time constant T63 (= t 2 ) [ms] Dead time (t 1 ) [ms] + Time constant T90 (= t 3 ) [ms] min. 220 310 370 FMB50 max. 1020 1110 1170 min. FMB51 660 910 - max. FMB52 FMB53 1460 1710 - Reading cycle Acyclic: max. 3/s, typical 1/s (depends on command # and number of preambles) Cyclic (Burst): max. 3/s, typical 2/s The Deltapilot M commands the BURST MODE function for cyclic value transmission via the HART communication protocol. Cycle time (Update time) Cyclic (Burst): min. 300 ms Response time Acyclic: min. 330 ms, typical 590 ms (depends on command # and number of preambles) Cyclic (Burst): min. 160 ms, typical 350 ms (depends on command # and number of preambles) Endress+Hauser 13
Dynamic behavior: PROFIBUS PA Type Dead time (t 1 ) [ms] Dead time (t 1 ) [ms] + Time constant T63 (= t 2 ) [ms] Dead time (t 1 ) [ms] + Time constant T90 (= t 3 ) [ms] min. 95 185 245 FMB50 max. 1195 1285 1345 min. FMB51 535 785 - max. FMB52 FMB53 1635 1885 - Reading cycle Cyclic: max. 30/s (dependent on the number and type of function blocks used in a closed-control loop) Acyclic: typical 25/s Cycle time (update time) min. 100 ms The cycle time in a bus segment in cyclic data communication depends on the number of devices, on the segment coupler used and on the internal PLC cycle time. Response time Cyclic: approx. 8 to 13 ms (depends on Min. Slave Interval) Acyclic: approx. 23 to 35 ms (depends on Min. Slave Interval) Dynamic behavior: FOUNDATION Fieldbus Type Dead time (t 1 ) [ms] Dead time (t 1 ) [ms] + Time constant T63 (= t 2 ) [ms] Dead time (t 1 ) [ms] + Time constant T90 (= t 3 ) [ms] min. 105 195 255 FMB50 max. 1105 1195 1255 min. FMB51 545 795 - max. FMB52 FMB53 1545 1795 - Reading cycle Cyclic: max. 10/s (dependent on the number and type of function blocks used in a closed-control loop) Acyclic: typical 5/s Cycle time (update time) Cyclic: min. 100 ms Response time Cyclic: max. 20 ms (for standard bus parameter settings) Acyclic: typical 70 ms (for standard bus parameter settings) Damping A damping affects all outputs (output signal, display). Via on-site display, handheld terminal or PC with operating program, continuous from 0...999 s Via DIP-switch on the electronic insert, switch position "on" (= set value) and "off" (= damping switched off) Factory setting: 2 s 14 Endress+Hauser
Data of the FOUNDATION Fieldbus interface Basic data Device Type Device Revision DD Revision CFF Revision 0x1023 01 (hex) 0x01021 0x000102 ITK Version 5.2.0 ITK Certification Driver No. Link-Master (LAS) capable Link Master / Basic Device selectable IT067500 Yes Yes; Factory setting: Basic Device Number of VCRs 44 Number of Link Objects in VFD 50 Number of FB-Schedule Objects 40 Virtual communication references (VCRs) Permanent Entries 44 Client VCRs 0 Server VCRs 5 Source VCRs 8 Sink VCRs 0 Subscriber VCRs 12 Publisher VCRs 19 Link settings Slot time 4 Min. inter PDU delay 12 Max. response delay 40 Transducer Blocks Block Content Output values TRD1 Block Contains all parameters related to the measurement Pressure or level (channel 1) Process temperature (channel 2) Measured pressure value (channel 3) Max. pressure (channel 4) Level before linearization (channel 5) Diagnostic Block Contains diagnostic information Error code via DI channels (channel 10 to 15) Display Block Contains parameters to configure the onsite display No output values Endress+Hauser 15
Function blocks Block Content Number of blocks Execution time Functionality Resource Block Analog Input Block 1 Analog Input Block 2 Digital Input Block Digital Output Block PID Block Arithmetic Block Input Selector Block Signal Characterizer Block Integrator Block The Resource Block contains all the data that uniquely identify the device. It is an electronic version of a nameplate of the device. The AI Block receives the measuring data from the Sensor Block, (selectable via a channel number) and makes the data available to other function blocks at its output. Enhancement: digital outputs for process alarms, fail safe mode. This block contains the discrete data of the Diagnose Block (selectable via a channel number 10 to 15) and provides them for other blocks at the output. This block converts the discrete input and thus initiates an action (selectable via a channel number) in the DP Flow Block or in the im TRD1 Block. Channel 20 resets the counter for max. pressure transgressions value and Channel 21 resets the Totalizer. The PID Block serves as a proportional-integralderivative controller and is used almost universally for closed-loop-control in the field including cascade and feedforward. Input IN can be indicated on the display. The selection is performed in the Display Block (DISPLAY_MAIN_LINE_CONTENT). This block is designed to permit simple use of popular measurement math functions. The user does not have to know how to write equations. The math algorithm is selected by name, chosen by the user for the function to be performed. The Input Selector Block facilitates the selection of up to four inputs and generates an output based on the configured action. This block normally receives its inputs from AI Blocks. The block performs maximum, minimum, average and first good signal selection. Inputs IN1 to IN4 can be indicated on the display. The selection is performed in the Display Block (DISPLAY_MAIN_LINE_1_CONTENT). The Signal Characterizer Block has two sections, each with an output that is a non-linear function of the respective input. The non-linear function is generated by a single look-up table with 21 arbitrary x-y pairs. The Integrator Block integrates a variable as a function of the time or accumulates the counts from a Pulse Input Block. The block may be used as a totalizer that counts up until reset or as a batch totalizer that has a setpoint, where the integrated or accumulated value is compared to pre-trip and trip settings, generating a binary signal when the setpoint is reached. 1 enhanced 2 25 ms enhanced 1 20 ms standard 1 20 ms standard 1 40 ms standard 1 35 ms standard 1 30 ms standard 1 40 ms standard 1 35 ms standard Additional function block information: Instantiate Function Block YES Number of instantiate blocks 20 16 Endress+Hauser
Power supply Electrical connection Note! When using the measuring device in hazardous areas, installation must comply with the corresponding national standards and regulations and the Safety Instructions or Installation or Control Drawings. ä 66 ff, "Safety Instructions" and "Installation/Control Drawings" sections. According to IEC/EN61010 a suitable disconnector has to be installed for the device HART: Overvoltage protection HAW569-DA2B for the non-hazardous area, ATEX II 2 (1) Ex ia IIC and IEC Ex ia can be ordered as an option (see "Ordering information" section). Protective circuits against reverse polarity, HF influences and overvoltage peaks are installed. The digital communication signal is transmitted to the bus via a 2-wire connection. The bus also provides the power supply. 1 7 6 - + 2 5 4 3 P01-xMx5xxxx-04-xx-xx-xx-004 Electrical connection 1 External grounding terminal 2 Internal grounding terminal 3 Supply voltage ä 20 4 4...20 ma for HART devices 5 For HART and FOUNDATION Fieldbus devices: With a handheld terminal, all the parameters can be configured anywhere along the bus line via menu operation. 6 Terminals 7 For HART devices: test terminals, see section "Taking 4 to 20 ma test signal" 4 to 20 ma HART Taking 4 to 20 ma test signal A 4 to 20 ma test signal may be measured via the test terminals without interrupting the measurement. PROFIBUS PA For further information on the network structure and grounding, and for further bus system components such as bus cables, see the relevant documentation, e.g. Operating Instructions BA00034S "PROFIBUS DP/PA: Guidelines for planning and commissioning" and the PNO Guideline. Cable specifications: Use a twisted, shielded two-wire cable, preferably cable type A Note! For further information on the cable specifications, see Operating Instructions BA00034S "PROFIBUS DP/PA: Guidelines for planning and commissioning", the PNO Guideline 2.092 Endress+Hauser 17
Deltapilot M FMB50/51/52/53 PROFIBUS PA User and Installation Guideline" and IEC 61158-2 (MBP). FOUNDATION Fieldbus The digital communication signal is transmitted to the bus via a 2-wire connection. The bus also provides the power supply. For further information on the network structure and grounding and for further bus system components such as bus cables, see the relevant documentation, e.g. Operating Instructions BA00013S "FOUNDATION Fieldbus Overview" and the FOUNDATION Fieldbus Guideline. Cable specifications: Use a twisted, shielded two-wire cable, preferably cable type A Note! For further information on the cable specifications, see Operating Instructions BA00013S "FOUNDATION Fieldbus Overview", FOUNDATION Fieldbus Guideline and IEC 61158-2 (MBP). Devices with valve connector + + + Left: electrical connection for devices with a valve connector Right: view of the connector at the device P01-xMx5xxxx-04-xx-xx-xx-005 Material: PA 6.6 Devices with Harting plug Han7D + + 8 7 Han7D 1 5 6 2 3 4 + Left: electrical connection for devices with Harting plug Han7D Right: view of the plug connector at the device P01-xMD7xxxx-04-xx-xx-xx-000 Material: CuZn 18 Endress+Hauser
Devices with M12 plug PIN assignment for M12 connector PIN Meaning 4 3 1 Signal + 2 Not assigned 1 + 2 nc 3 Signal 4 Earth A0011175 Endress+Hauser offers the following accessories for devices with an M12 plug: Plug-in jack M 12x1, straight Material: body PA; coupling nut CuZn, nickel-plated Degree of protection (fully locked): IP66/67 Order number: 52006263 Plug-in jack M 12x1, elbowed Material: body PBT/PA; coupling nut GD-Zn, nickel-plated Degree of protection (fully locked): IP66/67 Order number: 71114212 Cable 4x0.34 mm² (20 AWG) with M12 socket, elbowed, screw plug, length 5 m (16 ft) Material: body PUR; coupling nut CuSn/Ni; cable PVC Degree of protection (fully locked): IP66/67 Order number: 52010285 Devices with 7/8" plug PIN assignment for 7/8" connector PIN Meaning 1 2 3 4 1 Signal 2 Signal + 3 Shield 4 Not assigned A0011176 External thread: 7/8-16 UNC Material: housing / body CuZn, nickel-plated Protection: IP66/68 Cable gland Approval Type Clamping area Standard, CSA GP ATEX II1/2G or II2G Ex ia, IEC Ex ia Ga/Gb or Ex ia Gb, FM/ CSA IS ATEX II1/2D Ex t, II1/2GD Ex ia, II3G Ex na, IEC Ex t Da/Db Plastic M20x1.5 Metal M20x1.5 (Ex e) 5 to 10 mm (0,2 to 0,39 in) 7 to 10.5 mm (0,28 to 0,41 in) Terminals For wire cross-sections of 0.5 to 2.5 mm² (20 to 14 AWG) Endress+Hauser 19
Supply voltage Note! When using the measuring device in hazardous areas, installation must comply with the corresponding national standards and regulations and the Safety Instructions or Installation or Control Drawings. All explosion protection data are given in separate documentation which is available upon request. The Ex documentation is supplied as standard with all devices approved for use in explosion hazardous areas. ä 66 ff, "Safety Instructions" and "Installation/Control Drawings" sections. 4 to 20 ma HART Type of protection Intrinsically safe Other types of protection Devices without certificate Supply voltage 11.5... 30 V DC 11.5... 45 V DC (Versions with plug-in connection 35 V DC) PROFIBUS PA Version for non-hazardous areas: 9 to 32 V DC FOUNDATION Fieldbus Version for non-hazardous areas: 9 to 32 V DC Start-up current HART 12 ma or 22 ma (selectable) Current consumption PROFIBUS PA: 11 ma ± 1 ma, switch-on current corresponds to IEC 61158-2, Clause 21 FOUNDATION Fieldbus: 16 ma ± 1 ma, switch-on current corresponds to IEC 61158-2, Clause 21 Cable entry Cable specification Residual ripple Influence of power supply ä 53 ff, feature 50 "Electrical connection". Endress+Hauser recommends using twisted, shielded two-wire cables. Terminals for wire cross-sections 0.5 to 2.5 mm 2 (20 to 14 AWG) Cable outer diameter: 5 to 9 mm (0.2 to 0.35 in) depends on the used cable gland ( ä 19) No influence on 4 to 20 ma signal up to ± 5 % residual ripple within the permitted voltage range [according to HART hardware specification HCF_SPEC-54 (DIN IEC 60381-1)] 0.0006 % of URL/1 V 20 Endress+Hauser
Performance characteristics Reference operating conditions Long-term stability As per IEC 60770 Ambient temperature T A = constant, in the range of: +21 to +33 C (+70 to 91 F) Humidity ϕ = constant, in the range of: 5 to 80 % RH Ambient pressure p A = constant, in the range of: 860 to 1060 mbar (12.47 to 15.37 psi) Position of the measuring cell: constant, in range: FMB50: horizontally ±1 FMB51/FMB52/FMB53: vertically ±1 Input of LOW SENSOR TRIM and HIGH SENSOR TRIM for lower range value and upper range value Span based on zero point Material of the process isolating diaphragm: Alloy C276 (2.4819) and Alloy C276 (2.4819) with coating (AuRh or AuPt) Measuring cell material (meter body): Alloy C276 (2.4819), 316L (1.4435) Filling oil: synthetic oil (FDA)/inert oil Supply voltage: 24 V DC ± 3 V DC Load with HART: 250 Ω Measuring cell Long-term stability [%] 0.1 bar (1,5 psi) 0.4 bar (6 psi) 1.2 bar (18 psi) 4 bar (60 psi) 10 bar (150 psi) < 0.18 of the upper range limit (URL) / year < 0.45 of the upper range limit (URL) / 5 years < 0.1 of the upper range limit (URL) / year < 0.25 of the upper range limit (URL) / 5 years < 0.05 of the upper range limit (URL) / year < 0.125 of the upper range limit (URL) / 5 years Influence of orientation Warm-up period Calibration position < 2.3 mbar (0.0345 psi) when using synthetic oil (FDA) < 5 mbar (0.075 psi) when using inert oil Note! Position-dependent zero point shift can be corrected. ä 23, "General installation instructions" section. 4 to 20 ma HART: FMB50 = 5 s FMB51/FMB52/FMB53 = 8 s PROFIBUS PA: 8 s FOUNDATION Fieldbus: 20 s (after a TOTAL-reset 45 s) ➀ FMB50 ➁ FMB51, FMB52, FMB53 To minimize the effect of the orientation (e.g. in the case of vertical device installation), position offset is preset at the factory. ➀ ➁ P01-FMB5xxxx-11-xx-xx-xx-001 Reference accuracy The reference accuracy comprises the non-linearity according to limit point setting, hysteresis and nonreproducibility as per IEC 60770. The data refer to the calibrated span. Reference accuracy in % of the calibrated span Measuring cell TD "Standard" option "Platinum" option 0.1 bar (1.5 psi) TD 2:1 TD > 2:1 < 0.2 < 0.1 x TD < 0.15 < 0.075 x TD Endress+Hauser 21
Reference accuracy in % of the calibrated span Measuring cell TD "Standard" option "Platinum" option 0.4 bar (6 psi) TD 4:1 TD > 4:1 < 0.2 < 0.05 x TD < 0.15 < 0.0375 x TD 1.2 bar (18 psi) TD 2:1 TD > 2:1 < 0.2 < 0.1 x TD < 0.1 < 0.05 x TD 4 bar (60 psi) TD 4:1 TD > 4:1 < 0.2 < 0.05 x TD < 0.1 < 0.025 x TD 10 bar (150 psi) TD 2.5:1 TD > 2.5:1 < 0.2 < 0.08 x TD < 0.1 < 0.04 x TD Total performance The "Total performance" specification comprises the non-linearity including hysteresis, non-reproducibility as well as the thermal change in the zero point. Total performance in % of the URL Version Measuring cell -10 to +60 C (+14 to +140 F) 60 to 85 C (140 to 185 F) 85 to 100 C (185 to 212 F) FMB50 FMB51/52/53 snap-on 0.1 bar (1.5 psi) < 0.35 < 0.45 < 0.6 FMB51/52/53 welded 0.1 bar (1.5 psi) < 0.8 < 1 < 1.4 FMB50/51/52/53 0.4 bar (6 psi) < 0.35 < 0.45 < 0.6 1.2 bar (18 psi), 4 bar (60 psi), 10 bar (150 psi) < 0.15 < 0.2 < 0.25 Total error The total error comprises the long-term stability and the total performance: Measuring cell 0.1 bar (1.5 psi) Snap-on: ±0.63 Welded: ±1.0 % of the URL/year (in the permitted temperature range) 0.4 bar (6 psi) ±0.61 1.2 bar (18 psi) ±0.27 4 bar (60 psi), 10 bar (150 psi) ±0.25 Thermal change in the zero output and the output span Version Measuring cell -10 to +60 C (-94 to +752 F) 60 to 85 C (+140 to +185 F) Only FMB50: 85 to 100 C (+140 to +185 F) % of the calibrated span FMB50 FMB51/52/53 snap-on 0.1 bar (1.5 psi) < (0.32 + 0.30 x TD) < (0.34 + 0.40 x TD) < (0.34 + 0.55 x TD) FMB51/52/53 welded 0.1 bar (1.5 psi) < (0.32 + 0.50 x TD) < (0.34 + 0.60 x TD) - 0.4 bar (6 psi) < (0.31 + 0.25 x TD) < (0.32 + 0.30 x TD) - FMB50/51/52/53 1.2 bar (18 psi), 4 bar (60 psi), 10 bar (150 psi) < (0.31 + 0.10 x TD) < (0.32 + 0.15 x TD) < (0.33 + 0.20 x TD) 22 Endress+Hauser
Operating conditions (installation) General installation instructions FMB50 The position-dependent zero point shift can be corrected: directly at the device via an operating key directly at the device via operating keys on the display via digital communication if the cover is not open Note! In hazardous areas, comply strictly with the safety instructions when the housing cover is closed and open. The local display can be rotated in 90 stages. Level measurement Always install the device below the lowest measuring point. Do not install the device at the following positions: in the filling curtain in the tank outflow or at a point in the tank that can be affected by pressure pulses from the agitator The calibration and functional test can be carried out more easily if you mount the device downstream of a shutoff device. Deltapilot M must be included in the insulation for media that can harden when cold. Pressure measurement in gases Mount Deltapilot M with shutoff device above the tapping point so that any condensate can flow into the process. Pressure measurement in steams Mount Deltapilot M with siphon above the tapping point. Fill the siphon with liquid before commissioning. The siphon reduces the temperature to almost the ambient temperature. Pressure measurement in liquids Mount Deltapilot M with the shutoff device below or at the same level as the tapping point. FMB51/FMB52/FMB53 When mounting rod and cable versions, make sure that the probe head is located at a point as free as possible from flow. To protect the probe from impact resulting from lateral movement, mount the probe in a guide tube (preferably made of plastic) or secure it with a clamping fixture. In the case of devices for hazardous areas, comply strictly with the safety instructions when the housing cover is open. The length of the extension cable or the probe rod is based on the planned level zero point. The height of the protective cap must be taken into consideration when designing the layout of the measuring point. The level zero point (E) corresponds to the position of the process isolating diaphragm. Level zero point = E; top of the probe = L. L E Suspension clamp (FMB53 only) Material: ä 46 ff Order number: 52010869 ä 53 ff, feature 620, "Accessory enclosed", version "PO". 238 61 Endress+Hauser 23
Supplementary installation instructions Process isolating diaphragm Do not clean or touch process isolating diaphragms with hard or pointed objects. The process isolating diaphragm in the rod and cable version is protected against mechanical damage by a plastic cap. Seal Deltapilot M devices with a G 1 ½ thread: When screwing the device into the tank, the flat seal has to be positioned on the sealing surface of the process connection. To avoid additional strain on the process isolating diaphragm, the thread should never be sealed with hemp or similar materials. Deltapilot M devices with NPT threads: Wrap Teflon tape around the thread to seal it. Tighten the device at the hexagonal bolt only. Do not turn the device at the housing. Do not overtighten the thread when screwing in the screw. Max. torque: 20 to 30 Nm (14.75 to 22.13 lbf ft) Sealing the probe housing Moisture must not penetrate the housing when mounting the device, establishing the electrical connection and during operation. Always firmly tighten the housing cover and the cable entries. Lubricant is provided on the O-ring seal in the housing cover and on the thread of the aluminum cover. To ensure that the cover seals tight, any lubricant which has been removed must be replaced. Use silicone grease or graphite paste as the lubricant. Mineral oil-based grease can destroy the O-ring. PE cable length > 300 m (984 ft) Two suspension clamps must be used for PE cables longer than 300 meters (984 ft). Cable length tollerances FMB52 Cable length < 5 m (16 ft): up to -35 mm (-1.38 in) Cable length 5...10 m (16...33 ft): up to -75 mm (-2.95 in) Cable length 10...100 m (33...328 ft): up to -100 mm (-3.94 in) FMB53 Cable length < 5 m (16 ft): up to ±17.5 mm (±0.69 in) Cable length 5...10 m (16...33 ft): up to ±37.5 mm (±1.48 in) Cable length 10...100 m (33...328 ft): up to ±50 mm (±1.97 in) Rod length tollerances FMB51 Rod length < 4000 mm (157 in): up to -4 mm (-0,16 in) Wall and pipe mounting For installing the device on pipes or walls, Endress+Hauser provides a mounting bracket which is included in the scope of supply or can be ordered as a separate accessory (part no. 71102216). For the dimensions, see ä 39. 24 Endress+Hauser
"Separate housing" version With the "separate housing" version, you are able to mount the housing with the electronics insert at a distance from the measuring point. This allows for trouble-free measurement: Under particularly difficult measuring conditions (at installation locations that are cramped or difficult to access) If rapid cleaning of the measuring point is required If the measuring point is exposed to vibrations You can choose between different cable versions: PE (2 m (6.6 ft), 5 m (16 ft) and 10 m (33 ft)) FEP (5 m (16 ft)). ä 53 ff, feature 600, "Separate housing". For the dimensions, see ä 39. FEP cable: IP 69K IP 66/68 NEMA 4/6P PE cable: IP 66/68 NEMA 4/6P ➀ ➂ ➁ ➃ r 120 mm IP xx (see chapter Ordering information ) P01-PMx5xxxx-11-xx-xx-en-002 In the case of the "separate housing" version, the sensor is delivered with the process connection and cable ready mounted. The housing and a mounting bracket are enclosed as separate units. The cable is provided with a socket at both ends. These sockets are simply connected to the housing and the sensor. 1 Process connection with sensor 2 Cable, both ends are fitted with a socket 3 Mounting bracket provided, suitable for pipe and wall mounting (for pipes from 1 1/4 " up to 2" diameter) 4 Housing with electronic insert Degree of protection for the process connection and sensor with the use of FEP cable: IP 69K IP 66 NEMA 4/6P IP 68 (1.83 mh 2 O for 24 h) NEMA 4/6P PE cable: IP 66 NEMA 4/6P IP 68 (1.83 mh 2 O for 24 h) NEMA 4/6P Technical data of the PE and FEP cable: Minimum bending radius: 120 mm (4.72 in) Cable extraction force: max. 450 N (101 lbf) Resistance to UV light Use in hazardous area: Intrinsically safe installations (Ex ia/is) FM/CSA IS: for Div.1 installation only Endress+Hauser 25
Oxygen applications Oxygen and other gases can react explosively to oils, grease and plastics. As a result, the following are some of the precautions that must be taken: All components of the system, such as measuring devices, must be cleaned in accordance with the BAM (DIN 19247) requirements. Depending on the materials used, a certain maximum temperature and maximum pressure must not be exceeded for oxygen applications. The maximum temperature T max for oxygen applications is 60 C (140 F). The devices suitable for gaseous oxygen applications are listed in the following table with the specification p max. Order code for devices 1) cleaned for oxygen applications FMB50 2) FMB51 2) p max for oxygen applications Depends on the lowest-rated element, with regard to pressure, of the selected components: over pressure limit (OPL) of the sensor or process connection (1.5 x PN) 3) Depends on filling oil 4) Depends on the lowest-rated element, with regard to pressure, of the selected components: over pressure limit (OPL) of the sensor or process connection (1.5 x PN) 3) Depends on filling oil 4) Depends on seal material 1) Only device, not accessory or enclosed accessory 2) Feature 570 "Service" version "HB" 3) ä 10, "Measuring range" section and ä 30 ff, "Mechanical construction" section 4) Oxygen applications possible with FKM seal and inert oil. PWIS cleaning Applications with hydrogen Special measuring cells for acids, alkalis or sea water (not FMB50) Special cleaning of the transmitter to remove paint-wetting substances, for use in paint shops ä 53 ff feature 570 "Service", version "HC". The stability of the materials used must be checked before using them in the medium. The protective cap of the process isolating diaphragm must be removed if necessary (FMB51/FMB52/FMB53). With regard to materials in which hydrogen formation takes place (e.g. digested sludge), hydrogen atoms can diffuse through the metal process isolating diaphragm. This can result in incorrect measurement results. Endress+Hauser offers process isolating diaphragms with a gold/rhodium coating for such instances. Order via feature 170 "Material of the process isolating diaphragm", version "L". Note! To reduce the formation of hydrogen, you should not use galvanized assemblies. For acids, alkalis or sea water, Endress+Hauser offers process isolating diaphragms with a gold/platinum coating. Note! With temperature exposure (up to 85 C (185 F)) there is an additional zero point deviation of 1,1 mbar (0,0165 psi). Order via feature 170 "Material of the process isolating diaphragm", version "N". 26 Endress+Hauser
Operating conditions (environment) Ambient temperature range Version FMB50 FMB51 FMB52 FMB53 Without LCD display With LCD display 1) With M12 plug, elbowed With separate housing (PE and FEP cable) 40 C to +85 C (-40 F to +185 F) -25 C to +85 C (-13 F to +185 F) With PE cable: -40 C to +70 C (-40 F to +158 F) With FEP cable: 40 C to +80 C (-40 F to +176 F) 20 C to +70 C (-4 F to +158 F) With PE cable: -25 C to +70 C (-13 F to +158 F) With FEP cable: -25 C to +80 C (-13 F to +176 F) -20 C to +60 C (-4 F to +140 F) 1) Extended temperature application range (-40 C to +85 C ( 40 F to +185 F)) with restrictions in optical properties such as display speed and contrast Storage temperature range Version FMB50 FMB51 FMB52 FMB53 Without LCD display With LCD display With M12 plug, elbowed With separate housing and FEP cable 40 C to +90 C (-40 F to +194 F) 40 C to +85 C (-40 F to +185 F) -25 C to +90 C (-13 F to +194 F) With PE cable: -40 C to +70 C (-40 F to +158 F) With FEP cable: 40 C to +80 C (-40 F to +176 F) With PE cable: -25 C to +70 C (-13 F to +158 F) With FEP cable: -25 C to +80 C (-13 F to +176 F) -20 C to +60 C (-4 F to +140 F) Degree of protection ä 53 ff, feature 50 "Electrical connection". Separate housing ä 25 Climate class Class 4K4H (air temperature: 20 to 55 C ( 4 to +131 F), relative humidity: 4 to 100%) satisfied as per DIN EN 60721-3-4 (condensation possible) Vibration resistance Device/accessory Test standard Vibration resistance FMB50, FMB52, FMB53 FMB50, FMB52, FMB53 with mounting bracket GL VI-7-2 Part 7: Guidelines for the Performance of Type Approvals Chapter 2: Test Requirements for Electrical / Electronic Equipment and Systems IEC 61298-3 Guaranteed for: 5 to 25 Hz: ±1.6 mm (0.06 in); 25 to 100 Hz: 4 g in all 3 planes Guaranteed for: 10 to 60 Hz: ±0.15 mm (0.01 in); 60 to 500 Hz: 2 g in all 3 planes FMB51 IEC 60068-2-6 Guaranteed for: 10 to Hz: ±0.075 mm (0.003 in) 60...150 Hz 1g in all 3 planes Electromagnetic compatibility Electromagnetic compatibility as per all the relevant requirements of the EN 61326 series and NAMUR Recommendation EMC (NE21). Details can be found in the Declaration of Conformity (in the Download area of "www.de.endress.com", "search area - Approvals and Certificates", "Manufact. Declaration"). Max. deviation during EMC-tests < 0.5% of the span All tests were performed with full measurement range (TD 1:1). Endress+Hauser 27