Coriolis Mass Flow Measuring System PROline promass 40 E

Transcription

1 Technical Information TI 055D/24/ae oriolis Mass Flow Measurg System PROle promass 40 E The new mass flow measurg system with low cost and basic functions - the economical alternative to conventional volume flowmeters Features and benefits alanced dual-tube system Nomal ameters 3/8 to 2 Measurement is dependent of fluid properties ompact design, occupyg very little space Fit and forget stallation ow cost of ownership Robust field housg, NEM 4X (IP 67) Remote operation via HRT Two-le, backlit splay (optional) so that important process variables can be read rectly at the meter Guaranteed product quality, suitable for IP/SIP cleang 3- authorization Explosion proof approval for stallation Division 1 areas (FM, S, TEX, etc.) Performance characteristics: Mass flow: iquids: ±0.5% of rate Gases: ±1.0% of rate Volume flow: iquids: ±0.7% of rate pplication For mass or volume flow measurement. pplication examples: dtives Oils, greases cids, alkalis acquers, pats Suspensions Gases The Power of Know How

2 Function and system design Measurg prciple The measurg prciple is based on the controlled generation of oriolis forces. These forces are always present when both translational (straight le) and rotational (revolvg) movement occur simultaneously. F = 2 x m (ω x v) F = oriolis force m = mass of movg body ω = angular velocity v = raal velocity a rotatg or oscillatg system The amplitude of the oriolis force depends on the movg mass m, its velocity v the system and therefore its mass flow. The Promass uses an oscillation stead of a constant angular velocity ω. Two parallel measurg tubes, with fluid flowg through them, are oscillated antiphase, much like a tung fork. The oriolis forces produced at the measurg tubes cause a phase shift the tube oscillation (see Figure below): When there is zero flow, i.e., with the fluid standg still, both phases are equal (1 : no phase fference). When there is mass flow, the tube oscillation is decelerated at the let (2) and accelerated at the outlet (3) s the mass flow rate creases, the phase fference also creases (-). The oscillations of the measurg tubes are determed usg electrodynamic sensors at the let and outlet. The measurement prciple operates dependent of temperature, pressure, viscosity, conductivity or flow profile. Volume measurement The measurg tubes are contuously excited at their resonant frequency. s the mass, and therefore the density of the oscillatg system changes (measurg tubes and fluid), the vibratg frequency is readjusted. The resonant frequency is thus a function of the fluid density, and is used conjunction with the measured mass flow to calculate the volume flow. The temperature of the measurg tubes is determed order to calculate the compensation factor due to temperature effects. Measurg system Measured variable 2 The measurg system consists of a transmitter and a sensor (compact version) Promass 40 transmitter Promass E sensor (3/8 to 2 ) Input variables Mass flow (proportional to the phase fference between two sensors mounted on the measurg tubes to register a phase shift the oscillation) Volume flow (calculated from mass flow and fluid density. The density is proportional to the resonance frequency of the measurg tubes) Measurg tube temperature (by temperature sensors) for calculatg the compensation of temperature effects

3 Measurg range Measurg range for liquids: Nomal Size Full scale values (liquids) m m(f) to m max(f) 3/8 0 to 73.5 lb/m 1/2 0 to 238 lb/m 1 0 to 661 lb/m 1-1/2 0 to 1650 lb/m 2 0 to 2570 lb/m Measurg ranges for gases: The full scale values depend on the density of the gas. Use the formula below to calculate the full scale values: ρ (G) ρ (G) m max(g) = m max(f) 14 lb/ft 3 m max(g) = Maximum full scale value for gas (lb/m) m max(f) = Maximum full scale value for liquid (lb/m) = Gas density lb/ft 3 under process contions Gas example: Promass E sensor, 2 nomal size Gas: air with a density of lb/ft 3 (at 68 F and 725 psi) Maximum full scale value (liquid), 2570 lb/m Maximum possible full scale value: m m max(g) = max(f) ρ (G) = 2570 lb/m lb/ft 3 14 lb/ft 3 = 690 lb/m 14 lb/ft 3 Recoended measurg ranges: Select nomal ameter by optimizg between required flow range and permissible pressure loss. The mimum recoended full scale value is approximately 1/20 of the maximum full scale value. In most applications, 20 to 50% of the maximum full scale value can be considered ideal. Select a lower full scale value for abrasive substances such as fluids with entraed solids (flow velocity < 3 ft/s). For gas measurement, the followg rules apply: Flow velocity the measurg tubes should not be more than half the sonic velocity (0.5 Mach). The maximum mass flow depends on the density of the gas (see formula above). Operable flow range Input signal Flow rates above the preset full scale value do not overload the amplifier, i.e. the totalizer values are registered correctly. Status put (auxiliary put): V = 3 to 30 VD, R i = 5 k Ω, galvanically isolated. onfigurable for totalizer reset, measured value suppression, error-message reset, or start zero pot adjustment. 3

4 Output Output signal urrent output: ctive/passive selectable, galvanically isolated, time constant selectable (0.05 to 100 seconds), full scale value selectable, temperature coefficient: typically % of rate per F; resolution: 0.5 µ. ctive: 0/4 to 20 m, R < 700 Ω (for HRT : R 250 Ω) Passive: 4 to 20 m, maximum 30 VD, R i 150 Ω Pulse/frequency output: Passive, open collector, 30 VD, 250 m, galvanically isolated. Frequency output: full scale frequency 2 to 1000 Hz (f max = 1250 Hz), on/off ratio 1 : 1, pulse width maximum 10 seconds Pulse output: pulse value and pulse polarity selectable, maximum pulse width adjustable (0.05 to 2 seconds), maximum pulse frequency selectable Signal on alarm oad Status output ow flow cut off Galvanic isolation urrent output failsafe mode selectable Pulse/frequency output failsafe mode selectable Status output de-energized by fault or power supply failure see Output signal Open collector, maximum 30 VD / 250 m, galvanically isolated. onfigurable for: error messages, Empty Pipe Detection (EPD), flow rection, or limit values. Switch pots for low flow cutoff are selectable. ll circuits for puts, outputs, and power supply are galvanically isolated from each other. Power supply Electrical connection measurg unit = View (field housg) a able for power supply: 85 to 260 V, 20 to 55 V, 16 to 62 VD Termal No. 1: 1 for, + for D Termal No. 2: N for, - for D b Signal cable: Termal Nos. 20 to 27, refer to termal assignment c Ground termal for power ground connection d Ground termal for signal cable shield N (-) 2 1 (+) 1 b d c a Outputs / puts Termal No. Order variant ***-*********** - - Frequency urrent output output HRT 40***-***********D Status put Status output Frequency urrent output output HRT 40***-***********S - - Frequency urrent output output IS IS, active, HRT 40***-***********T - - Frequency urrent output output IS IS, passive, HRT 4

5 Supply voltage able entry Power consumption Power supply failure 85 to 260 V, 45 to 65 Hz 20 to 55 V, 45 to 65 Hz 16 to 62 VD 1/2" NPT : < 15 V (cludg sensor) D: < 15 W (cludg sensor) Switch-on current: Maximum 13.5 (< 50 ms) at 24 VD Maximum 3 (< 5 ms) at 260 V astg m. 1 power cycle EEPROM saves measurg system data if power supply fails S-DT = exchangeable data storage chip which stores the data of the sensor: nomal ameter, serial number, calibration factor, zero pot, etc. Measurg accuracy Reference operatg contions Maximum measured error Error limits followg ISO/DIS 11631: 68 to 86 F; 30 psi to 60 psi (20 to 30 ; 2 to 4 bar) alibration systems as per national standards Zero pot calibrated under operatg contions Density calibrated The followg values refer to the pulse/frequency output. The adtional measured error at the current output is typically ± 5 µ. Mass flow (liquid) ± 0.5% ± [(zero pot stability / measured value) x 100] % of readg Mass flow (gas) ± 1.0% ± [(zero pot stability / measured value) x 100] % of readg Volume flow (liquid) ± 0.7% ± [(zero pot stability / measured value) x 100] % of readg Nomal Maximum full scale value Zero pot stability Size lb/m (kg/h) lb/m (kg/h) 3/ (2000) (0.20) 1/2 238 (6500) (0.65) (18,000) (1.8) 1-1/ (45,000) (4.5) (70,000) (7.0) alculation example (mass flow, liquid): Given: Promass 40 E / 1, measured flow = 294 lb/m Max. measured error: ± 0.5% ± [(zero pot stability / measured value) x 100] % Max. measured error ± 0.5% ± lb/m 294 lb/m 100% = ± 0.523% [%] ±2.0 ±1.5 ±1.0 ±0.5 0 Maximum measured error % of readg (example: Promass 40 E / 1 sensor) lb/m 5

6 Repeatability Mass flow (liquid): ± 0.25% ± [1/2 x (zero pot stability / measured value) x 100] % of readg Mass flow (gas): ± 0.5% ± [1/2 x (zero pot stability / measured value) x 100] % of readg Volume flow (liquid): ± 0.35% ± [1/2 x (zero pot stability / measured value) x 100] % of readg Zero pot stability, refer to Maximum measured error, page 5 alculation example (mass flow, liquid): Given: Promass 40 E / 1, measured flow = 294 lb/m Repeatability: ± 0.25% ± [1/2 x (zero pot stability / measured value) x 100] % of readg Repeatability ± 0.25% ± 1/ lb/m 294 lb/m 100% = ± 0.261% Influence of meum temperature Influence of meum pressure When there is a fference between the temperature for zero pot adjustment and the process temperature, the typical measured error of the Promass E is ± % of the full scale value / F (± % of full scale value / ) With nomal ameters 3/8 to 1-1/2, the effect on accuracy of mass flow due to a fference between calibration pressure and process pressure can be neglected. With a 2 sensor, the fluence is % o.r. / psi (-0.009% o.r. / bar). NOTE: o.r. = of readg Operatg contions (stallation) Installation structions Note the followg pots: No special measures such as supports are necessary. External forces are absorbed by the construction of the strument. The high oscillation frequency of the measurg tubes ensures that the correct operation of the measurg system is not fluenced by pipe vibrations. No special precautions need to be taken for fittgs which create turbulence (valves, elbows, T-pieces, etc.), as long as no cavitation occurs. Mountg location Entraed air or gas bubbles the measurg pipe may cause errors measurement. The followg stallations are to be avoided: Do not stall at the highest pot of the process pipg. Do not stall rectly upstream before an unrestricted pipe outlet a vertical pipele. 6

7 orrect stallation is still possible usg the recoendations shown the figure below when a vertical pipe stallation is required. Restrictions the pipg or an orifice with a smaller cross section than the measurg sensor can prevent the sensor from runng empty durg measurement. Nomal Orifice / ameter (.) restriction (.) 3/ / / Supply tank Sensor Orifice, pipe restrictions (see table at left) Valve atchg tank Orientation Vertical Vertical mountg (View 1) is recoended with the process material flowg upwards. This allows entraed solids to sk down and gases to rise away from the measurg tubes. This also allows the measurg tubes to be completely draed durg no flow which protects the tubes from solids build-up. Horizontal When correctly stalled, the transmitter housg is either above or below the pipg (View 2 and 3). void mountg the transmitter housg the same horizontal plane as the pipele NOTE: The Promass E measurg tubes are curved. The position of the sensor must match the fluid properties when the sensor is horizontally stalled. Position a is not suitable for fluids contag solids Position b is not suitable for fluids contag gases a b 7

8 Fluid temperature / orientation In order to ensure that the maximum permissible ambient temperature for the transmitter, -4 to +140 F (-20 to +60 ) is not exceeded, the followg orientations are recoended: High fluid temperature Vertical pipg: Install accordance with View 1 Horizontal pipg: Install accordance with View 3 ow fluid temperature Vertical pipg: Install accordance with View 1 Horizontal pipg: Install accordance with View Zero pot adjustment Zero pot adjustment is only required special cases: With very small flow rates Under extreme processs contions (e.g. high process pressure or high viscosity fluids) Once the sensor has been stalled, a zero pot calibration should be carried out under process contions order to ensure that the measurement is accurate. The static zero pot calibration is fulfilled usg completely filled measurg tubes and at no flow with shut-off valves both upstream and downstream of the sensor (or use existg shut-off valves and slide valves, etc.). Refer to the example the graphic below. 2 1 Normal operation valves 1 and 2 open Zero pot adjustment with pump pressure valve 1 open / valve 2 closed Zero pot adjustment without pump pressure valve 1 closed / valve 2 open 8

9 Tracg, thermal sulation With certa mea (chocolate, liquified gas, etc.) heat transfer at the sensor must be avoided. wide range of materials can be used for thermal sulation. Heatg can be provided either electrically (heat tracg) or supplied by copper tubes with heated water or steam. aution! Ensure the meter electronics are not overheated. The connector between the sensor and the transmitter housg must rema free of sulatg material. Note that a certa orientation might be required, dependg on fluid temperature (refer to the formation Fluid temperature / orientation on page 8). System pressure It is important to avoid cavitation as this can affect tube oscillation. No special measures need to be taken for products which have properties similar to those of water under normal contions. With volatile liquids (hydrocarbons, solvents, liquified gases) or other liquids suction les, the vapor pressure of the liquid must not drop below a pot where the liquid begs to boil. It is also important not to release gases which are found naturally many liquids. This can be prevented by ensurg that the system pressure is high enough. Ideally, the sensor should be mounted as follows: On the pressure side of pumps (avoids low pressure) t the lowest pot of a vertical pipele. Operatg contions (environment) mbient temperature range Storage temperature range Protection Shock resistance Vibration resistance Electromagnetic compatibility (EM) -4 to +140 F (-20 to +60 ), sensor and transmitter. Install the system a protected area, avoidg rect sunlight, especially warm climate regions. -40 to +175 F (-40 to +80 ) NEM 4X (IP 67) for transmitter and sensor ccordg to IE cceleration up to 1 g, 10 to 150 Hz, followg IE To EN and NMUR recoendation NE 21 Operatg contions (process) Process temperature range Process pressure range imitg flow Pressure loss Sensor: -40 to +255 F (-40 to +125 ) Seals: no ternal seals Refer to page 12 The Promass sensor E has no secondary contament Refer to Measurg range, page 3 Dependent on fluid properties and nomal ameter. onsult for pplicator P software to determe pressure loss. ll important strument data is contaed the pplicator software program order to optimize the design of the measurg system. The software is used for the followg calculations: Nomal ameter of the sensor with fluid characteristics such as viscosity, density, etc. Pressure loss downstream of the measurg pot. onvertg mass flow to volumetric flow, etc. Simultaneous splay of various meter sizes. Determg measurg ranges The pplicator runs on any IM compatible P with Wdows. 9

10 10 Mechanical construction Dimensions, NSI flange connections 8.94" (227) 7.36" (187) 6.61" (168) 6.30" (160) S U 8.15" (207) ches ches ches 3/8 * 1/ /2 2 3/8 * 1/ /2 2 3/8 * 1/ / * 3/8" meter has 1/2" NSI flanges lass 150 Flange, 16.5, 316 SS lass 300 Flange, 16.5, 316 SS lass 600 Flange, 16.5, 316 SS U U U S S S Nomal Size Nomal Size Nomal Size

11 Dimensions, VO connections 8.94" (227) 8.15" (207) G U 7.36" (187) 6.61" (168) 6.30" (160) VO-4 (1/2"), 316 SS Nomal Size G U ches 3/ a/f 1" VO-4 (3/4"), 316 SS Nomal Size G U ches 1/ a/f 1-1/2" Dimensions, Tri-clamp connections 8.94" (227) 8.15" (207) G U 7.36" (187) 6.61" (168) 6.30" (160) Tri-clamp, 316 SS lamp Nomal Size ches G U 1" 1" 1" 1-1/2" 2" 3/8 1/ / /2" Tri-clamp, 316 SS lamp 1/2" 1/2" Nomal Size ches 3/8 1/ G U Weight Nomal Size 3/8 1/ /2 2 Weight lbs (kg) 17 (8) 17 (8) 22 (10) 33 (15) 49 (22) 11

12 Materials Material load agrams Transmitter housg: ompact housg, powder coated e-cast alumum Sensor housg: cid and alkali resistant outer surface, 304 SS Process connections: NSI flanges, 316 SS VO connections, 316 SS Tri-clamp, 316 SS Measurg tubes: 3/8 to 2, 904 SS Seals: Welded process connections without ternal seals Flange connection to NSI 16.5, 316 SS NSI lass Pressure (psig) NSI lass NSI lass Temperature ( F) VO process connection, 316 SS 1500 Pressure (psig) Temperature ( F) Tri-clamp process connection The load limit is defed exclusively by the material properties of the outer clamp used. This clamp is not cluded as part of the purchased sensor. Process connection Welded process connections: NSI 16.5 flanges, VO couplgs Tri-clamp sanitary connections 12

13 Display and user terface Display elements Operatg elements Remote operation iquid crystal splay, two les with 16 characters per le Selectable splay of fferent measured values and status variables No operatg elements Operation by means of HRT handheld counicator FieldTool configuration and service program from ertificates and approvals Hazardous area approvals Sanitary compatibility E mark Other standards and guideles Information on the currently available hazardous area rated versions (FM, S, TEX, etc.) is available on request from. ll formation relevant to explosion protection is available separate documentation. 3- authorized y attachg the E mark, confirms that the strument fulfills all the requirements of the relevant E rectives. Housg protection ratgs (IP code), EN Electromagnetic compatibility (EM requirements), EN (IE 1326) ssociation for Standards for ontrol Regulation the hemical Industry, NMUR NE 21. Tri-clamp is a registered trademark of ash & o., Inc., Kenosha, WI., US HRT is a registered trademark of HRT ounication Foundation, ust, TX., US S-DT is a registered trademark of Flowtec G, Reach, H 13

14 Orderg formation Promass 40 E Promass 40 E - Nomal Diameter /8, 73.5 lb/m max. full scale 15 1/2, 238 lb/m max. full scale 25 1, 661 lb/m max. full scale /2, 1650 lb/m max. full scale 50 2, 2570 lb/m max. full scale 2 Measurg system 904 SS measurg tubes 3.1 wetted parts material certificate, 904 SS measurg tubes 3 Process onnections S lass 150 NSI flanges, 316 SS S lass 300 NSI flanges, 316 SS S lass 600 NSI flanges, 316 SS VS 8-VO-4, 1/2 couplgs, 316 SS WS 12-VO-4, 3/4 couplgs, 316 SS FTS Tri-clamp, 316 SS (with 3/8 to 1, 1 clamps) FT Tri-clamp, 316 SS, 0.8 µm / 150 grit, 3- version (with 3/8 to 1, 1 clamps) FUW 1/2 Tri-clamp, 316 SS FU 1/2 Tri-clamp, 316 SS, 0.8 µm / 150 grit, 3- version 99 4 Test / Treatment (Test pressure of the measurg system to 1.5 times nomal pressure ratg of the selected process connections) No special test or treatment Pressure tested, 2.3 pressure test certificate Oil and grease free process wetted surface D Oil and grease free process wetted surface, pressure tested, 2.3 pressure test certificate 5 alibration 0.5% standard calibration 3-pot calibration, 0.5% (specify flow range) E 2/SS 3-pot calibration, 0.5%, certificate traceable accordg to ISO 9000 (ISO/IE 17025) Specify flow range 6 pprovals General purpose, for use non-hazardous locations N FM explosion proof, lass I, Div. 1, Grps -D S approved lass I, Div. 1, Grps -D and zone 1 R FM non-cenve lass I, Div. 2, Grps -D S approved lass I, Div. 2, Grps -D and zone 1 7 Protection NEM 4X (IP 67), compact alumum field housg 1-40 F (-40 ) ambient temperature, NEM 4X (IP 67), compact alumum field housg (only for approvals and R) 8 able entries 1/2 NPT X Sensor only, without cable entries 9 Power Supply / Display 0 85 to 260 V, without splay 1 20 to 55 V, 16 to 62 VD, without splay 4 85 to 260 V, with splay 5 20 to 55 V, 16 to 62 VD, with splay X Sensor only 10 Software Standard software X Sensor only 11 Outputs / Inputs urrent HRT, frequency D urrent HRT, frequency, status put, status output S urrent HRT, frequency; active IS (not for approvals, R) T urrent HRT, frequency; passive IS (not for approvals, R) X Sensor only 14

15 Supplemental documentation Promass 40 E System Information (SI 033D/24/ae) Promass 40 Operatg Instructions ( 061D/06/en) Promass 40 Description of Device Functions ( 062D/06/en) Hazardous rea pprovals Documentation (FM, S, TEX, etc.) 15

16 For application and selection assistance, the U.S. call 888-ENDRESS For total support of your stalled base, 24 hours a day, the U.S. call Visit us on our web site, United States, Inc Endress Place Greenwood, IN Phone: (317) ENDRESS FX: (317) anada anada 1075 Sutton Drive urlgton, ON 7 5Z8 Phone: (905) FX: (905) Mexico Paseo del Pedregal No. 610 ol. Jardes del Pedregal 01900, Mexico D.F. Mexico Phone: (525) FX: (525) The Power of Know How TI 055D/24/ae/ , Inc.