KROHNE 09/2001 7.02363.21.00 GR/PRINTO Level transmitter LT 100 Status: 10/99 Variable area flowmeters Vortex flowmeters Flow controllers Electromagnetic flowmeters Ultrasonic flowmeters Mass flowmeters Level measuring instruments Communications engineering Engineering systems & solutions
Level transmitter LT 100 For long-distance transmission of liquid level data Operating principle Housing The device operates on the float principle. A float guided on a non-magnetic tube follows the level of the liquid surface, thereby actuating the reed switches located inside the tube by means of a built-in magnet system. The reed switches shunt over parts of a resistor string. The magnet system operates the reed switches according to the position of the float and thus causes the resistance of the resistor string to change as a function of the liquid level. The float travel distance can be limited by stops fitted to the guide tube. The signal conditioner produces an output signal from 4 20 ma. Gasket Threaded connection Upper end stop Guide tube Resistor string with reed switches Float Magnet system Lower end stop 128
Application range Simple and rugged design for pressures up to 40 bar/580 psig and temperatures up to 130 C/266 F) Wetted parts of stainless steel; for aggressive products coated with PVC, PP, PVDF, PTFE Long-distance data transmission up to 2000 m Guide tube length 0.3 6 m Interface detection also possible The LT 100 is designed for liquid level measurement in storage or process tanks. The products must not be adhesive or of high viscosity. The min. density is 0.4 kg/l or 25 lb/ft 3 Optional: Interface level between two immiscible liquids. The difference in density between both liquids needs to be min.100 g/l. Typical liquids are: Water and aqueous liquids Acids/alkalis Organic and inorganic solvents All wetted parts can be coated with plastic for use in aggressive media. Product Overview Continuous, non-contact Switches Ultrasonic Radar Ultrasonic Buoyancy Capacitance Continuous, contact Ultrasonic Buoyancy TDR Vibration LT 100 129
Responsibility for suitability and intended use of our instruments rests solely with the purchaser. Technical data Measuring conditions Product Liquids Temperature 40 +130 C ( 40 266 F) Density 0.4 kg/l ( 25 lb/ft) Operating pressure 40 bar ( 580 psig) Ambient temperature Polycarbonate housing 30 +60 C ( 22 +140 F) Aluminium housing 40 +60 C ( 40 +140 F) Overall length 0.3 6 m (1 20 ft) Measuring accuracy Standard ±10 mm (±0.4 ) Option ± 5 mm (±0.2 ) Important: note specified float operating data, see table Float Selection Materials Housing Standard Option Gaskets Connection Housing cover Polycarbonate Cast aluminium with epoxy finish Nitriles Buna-N Screw connection Stainless steel 316 L (1.4435, 1.4404) Flange Standard Stainless steel 316 L (1.4435, 1.4404) Option Stainless steel, coated (PVC, PP, PVDF, PTFE) Guide tube Standard Stainless steel 316 L (1.4435, 1.4404) Option Stainless steel, coated (PVC, PP, PVDF, PTFE) Float See table Float Selection Connection Screw connection G1, 1 NPT Flanges DN 50, PN 10 DN 100, PN 40 2 ANSI, 150 lb 4 ANSI, 300 lb Other connections on request Protection category IP 66 Terminals (max. wire cross-section) 1.5 mm 2 (AWG 14) Cable entry Polycarbonate housing PG 13.5 (polyamide) Aluminium housing PG 13.5, option PG 16 (nickel-plated brass) Current output 4 20 ma Electromagnetic compatibility (EMC) to EN 50081-1, EN 50082-2 130 LT 100
Float selection Select float as a function of the pressure, temperature and density of the liquid. In addition, the required degree of corrosion resistance must be considered. Shape Dimensions Material Min. density Max. Max. in mm (inches) kg/l (lb/ft 3 ) operating product L 4 ( 13.12 ft)/ pressure temperature L > 4 (> 13.12 ft) in bar (psig)* in C ( F) Ball dia. 142 x 157 x 1.0 Stainless steel 316 Ti 0.55 / 0.6 35 (507) 40 +130 (5.59 x 6.18 x 0.04) (1.4571) (34.34) / (37.46) ( 40 +266) dia. 142 x 157 x 0.7 Stainless steel 316 Ti 0.4 / 0.5 20 (290) 40 +130 (5.59 x 6.18 x 0.027) (1.4571) (24.97) / (31.21) ( 40 +266) Cylinder dia. 90 x 140 Stainless steel 316 L 0.8 / 0.9 40 (580) 40 +130 (3.54 x 5.51) (1.4435, 1.4404) (49.94) / (56.19) ( 40 +266) dia. 64 x 140 Stainless steel 316 Ti 0.9 / 25 (362) 40 +130 (2.52 x 5.51) (1.4571) (56.19) / ( 40 +266) dia. 90 x 100 PVC 0.7 / 4 (58) 10 + 60 (3.54 x 3.94) (43.70) / (43.07) ( 14 +140) dia. 90 x 100 PP 0.55 / 0.55 4 (58) 20 +110 (3.54 x 3.94) (34.34) / (34.34) ( 44 +230) dia. 90 x 100 PVDF 0.9 / 0.9 4 (58) 40 +130 (3.54 x 3.94) (56.19) / (56.19) ( 40 +266) dia. 90 x 125 Hard glass** 0.8 / 0.8 4 (58) 40 +130 (3.54 x 4.92) (49.94) / (49.94) ( 40 +266) L = length guide tube ** The specified operating pressure applies to 20 C/68 F only! ** Hard glass float used for PTFE instrument version. Float test pressure = 1.3 times the max. allowable operating pressure. Data transmission system and electrical connections All types supply directly a current of 4 20 ma via the built-in converter. The signal conditioner PROFSI, with or without galvanically isolated output, is available for the intrinsically safe version. With the C 90 digital indicator the liquid level can be displayed on a 4-character LED display. Device designation ER (ER/BRX) ER (EExi) Overall length Standard 4000 mm ( 13 ft) 4000 mm ( 13 ft) Option 6000 mm ( 20 ft) 6000 mm ( 20 ft) Measuring error Standard ± 10 mm ( 0.4 ) ± 10 mm ( 0.4 ) Option ± 5 mm ( 0.2 ) ± 5 mm ( 0.2 ) Ambient temperature 20 +70 C ( 4... +158 F) 20 +70 C ( 4... +158 F) (higher temperatures on request) Current output 4 20 ma 4 20 ma Power supply 14 36 V DC with reverse-polarity protection 14 30 V DC Max. load (U-12 V) / 20 ma, max. 500 Ω (U-12 V) / 20 ma, max. 500 Ω Process temperature 20 +135 C 20 +135 C ( 4... +275 F) ( 4... +275 F) others supplied on request others supplied on request Electromagnetic compatibility (EMC) EN 50081-1, EN 50082-2 Self-inductance negligible Self-capacitance negligible Product Overview Vibration Continuous, non-contact Switches Ultrasonic Radar Ultrasonic Buoyancy Capacitance Continuous, contact Ultrasonic Buoyancy TDR LT 100 131
Signal conditioner PROFSI Dimensions in mm (inches) Power supply Standard Option Power consumption 230 V AC, (±10%), 50 Hz 24, 48, 115 V AC, 50 Hz, 24 V DC (±10%) AC = 4 VA; DC = 3 W Protection category (EN 60529/lEC 529) IP 20 (equivalent to NEMA 1) Ambient temperature 20 +60 C ( 4 +140 F) Current output 4 20 ma Load 850 Ω Linearity < 0.1% Housing Attachment Snap-on mounting on 35 mm, standard rail to DIN 46 277 Screw mounting Dimensions to DIN 43 604 Connection Self-opening binding posts Max. cross-section 2 x 2.5 mm 2 Material Polyamide Electromagnetic compatibility (EMC) to EN 50081-1, EN 50082-2 Ex PROFSI 35.5 (1.40 ) 110 (4.33 ) 75 (2.95 ) Digital indicator C 90 Dimensions in mm (inches) Power supply Standard 230 V AC (±10% ), 50/60 Hz Option 115 V AC (±10% ), 50/60 Hz Power consumption 6 VA Protection category IP 63 (EN 60529/IEC 529) Ambient temperature 20 +70 C ( 4 158 F) Current output 4 20 ma Load 15 Ω Display Digital ( 9999 +9999) 4-digit with LED Height of digits 14 mm Housing material Makrolon Electromagnetic compatibility (EMC) to EN 50081-1, EN 50082-2 43 (1.69 ) 90 (3.54 ) min. clearance when mounting several digital indicators in one panel 23 (0.91 ) 43 (1.69 ) 10 ( 0.4 ) 44 (1.73 ) 20 102 (4.02 ) 40 ( 1.57 ) 91 (3.58 ) 48 (1.89 ) 7,5 (0.3 ) ( 0.79 ) 132 LT 100
Dimensions and weights The weights refer to devices with 1000 mm guide tube and DN 50 flange. The flange DN 100 weighs an additional 0.7 kg. Every additional 100 mm or 4 tube length: 4000 mm ( 13.12 ft) = 0.06 kg (0.13 lb) > 4000 mm (> 13.12 ft) = 0.16 kg (0.36 lb) Additional weight for: connection 04 = 5.4 kg (12.1 lb) cast aluminium housing = 0.7 kg (1.6 lb) Weights of devices with ANSI flanges equivalent to those with the same DIN nominal size, with the following variations: 2 Class 150 lb/rf 07 0.8 kg ( 1.8 lb) 4 Class 150 lb/rf 08 0.5 kg ( 1.1 lb) 2 Class 300 lb/rf 09 +0.2 kg (+0.5 lb) 4 Class 300 lb/rf 10 +3.7 kg (+5.9 lb) Product Overview Vibration Dimensions in mm (inches) LT 100 Polycarbonate housing LT 100 Aluminium housing Aluminium housing with coated version LT 100/R PVC/03/PC LT 100/R PP/03/PC LT 100/R PVD/03/PC 4.6 kg (10.3 lb) Standard version LT 100/R /01/PC 1.8 kg (4.0 lb) Coated version LT 100/R PTFE/03/PC 5.9 kg (13.2 lb) Flange version LT 100/R /03/PC 4.1 kg (9.2 lb) Version with aluminium housing LT 100/R /01/AL 2.5 kg (5.6 lb) Continuous, non-contact Switches Ultrasonic Radar Ultrasonic Buoyancy Capacitance Flange version with aluminium housing LT 100/R /03/AL 4.8 kg (10.8 lb) Aluminium housing with coated version LT 100/R PVC/03/AL LT 100/R PP/03/AL LT 100/R PVDF/03/AL 5.3 kg (11.9 lb) Aluminium housing with coated version LT 100/R PTFE/03/AL 6.6 kg (14.8 lb) Continuous, contact Ultrasonic Buoyancy TDR LT 100 133
Electrical connection ER (BRX) <10Ω U = 14 36 V Indicator Power supply unit (Ex Zone 1) Range Zero Electronic unit XT 42 <10Ω * C 90 or any other indicating device ER/EExi Signal conditioner PROFSI or other intrinsically safe incoming supplies Safe area Hazardous area, Zone 1 ER/EExi XT 42 EExi Zero Range 4 20 ma 4 20 ma } Equipotential bonding required galvanically isolated output (option) 134 LT 100
Approvals Application Intrinsically safe hazardous-duty version for use in Zone 1 (EEx ia IIC T6) Flameproof enclosure (EEx d IIC T6) for use in Zone 1 Signal conditioner PROFSI (EEx ia IIC) for use in Zone 1 Instrument version LT 100/.. /ER(EExi) LT 100/.. /ER(BRX) Certification mark L.C.I.E.-No. 92.C 6123X L.C.I.E.-No. 87.B 6099X L.C.I.E.-No. 91.C 6066X Product Overview Continuous, contact Ultrasonic Buoyancy TDR Continuous, non-contact Switches Ultrasonic Radar Ultrasonic Buoyancy Capacitance Vibration Type code Instrument LT 100 Level transmitter Materials R Stainless steel 316 L (1.4435, 1.4404) R-PVC Stainless steel 316 L (1.4435, 1.4404), PVC coated R-PP Stainless steel 316 L (1.4435, 1.4404), PP coated R- PVDF Stainless steel 316 L (1.4435, 1.4404), PVDF coated R-PTFE Stainless steel 316 L (1.4435, 1.4404), PTFE coated Connection* 01 G1A 06 DN 100, PN 40 02 NPT 1" 07 ANSI 2", 150 lb RF 03 DN 50, PN 16 08 ANSI 4", 150 lb RF 04 DN 100, PN 16 09 ANSI 2", 300 lb RF 05 DN 50, PN 40 10 ANSI 4", 300 lb RF Housing version PC Polycarbonate AL Di-cast aluminium Application range N Normal range BRX Long-distance data transmission system Zone 1, EEx d IIC T6 (explosion-proof) EExi Long-distance data transmission system Zone 1, EEx ia IIC T6 (intrinsically safe) TS Interface detection LT 100 * When ordering, please specify overall length. LT 100 135
Notes