TE KPSI 750 Submersible Hydrostatic Level Transducer


KPSI 750 Submersible Hydrostatic Level Transducer

KPSI 750 Submersible Hydrostatic Level Transducer

The KPSI 750 submersible hydrostatic level transducer is specifically designed to meet the rigorous environments encountered in a slurry or highly viscous application. It provides precision depth measurement under most hostile conditions. Every KPSI Transducer utilizes a highly accurate pressure sensor assembly specifically designed for hostile fluids and gases. The assembly is integrated with supporting electronics in a durable waterproof housing constructed of 316 stainless steel. The attached electrical cable is custom manufactured and includes para-aramid synthetic fiber members to prevent errors due to cable elongation, and a unique water block feature that self-seals in the event of accidental cuts to the cable. Each transducer is shipped with our SuperDry Vent Filter that prevents moisture from entering the vent tube for at least one year without maintenance, even in the most humid environments.



  • Custom Polyurethane or ETFE Cable Length
  • Welded 316SS Body Construction
  • Custom Level Ranges up to 115 ft. (35 m) H2O
  • Optional Lifetime Lightning Protection
  • Long Life Vent Filter or Aneroid Bellows


  • Lift station monitoring
  • Wastewater
  • Slurry Tanks
  • Pump control


Full Scale Level Ranges10 thru 115 ft. H2O (3 thru 35 m H2O)Vented Gage Reference
(intermediate level ranges are available)  
Proof Pressure1.5 x FS 
Burst Pressure2.0 x FS 
Static Accuracy±0.25% FSOBFSL method
(combined effects of non-linearity, hysteresis  
and repeatability, best fit straight line method)  
Resolution+0.0001% FS 
Wetted Materials316 SS; PTFE; FKM 
Polyurethane or ETFE
Compensated Temp Range0 to 50ºC 
Thermal Error
(maximum allowable deviation from the Best Fit Straight Line due to a change in temperature)
±0.10% FSO/ºC                                         Worst case for level ranges > 23’ (7m) H2O
Operating Temp Range-20 to 60 ºCWhen attached to polyurethane cable
Protection RatingIP 68, NEMA 6P 
Excitation9-28V – VDC output 9-28V – mA output0-5V, 0-2.5V, 0-4V
 15-28V – VDC output0-10V
 10-28V – VDC output1.5-7.5V
Input Current20 mA maxFor mA output
 3.5 mA maxFor VDC output
Output4-20mA, 0-5 VDC, 0-2.5VDC,For ranges < 5 ft. (1.5m) H2O,
 0-4VDC, 0-10VDC, 1.5-7.5VDConly 4-20mA output is available
Zero Offset±0.25 mA for mA output 
 < 0.25 VDC for VDC output 
Output ImpedanceSee loop diagram for mA output 
 20 ohm for VDC output 
Insulation Resistance100 mega ohm at 50 VDC 
Circuit ProtectionPolarity, surge/shorted output 
 CE compliantEN 61326-1:2013 and 61326-2-3:2013
 UL, CUL and FMClass I, II, III, Div. 1, Groups A,B,C,D,E,F&G
 WEEE/RoHSWaste from Electrical and Electronic Equipment
  (WEEE) and Restrictions on the use of Hazardous
  Substances (RoHS)
Approximate Weight3.5  lbs. (1588 g) transducer 
 0.05 lbs./ft. (79 g/m) cable 
Cable Jacket MaterialPolyurethane (standard) 
 ETFE (optional) 
Cable Pull Strength200 lbs. (90 kg)Polyurethane
Cable Number of Conductors4 MAX 
Cable Conductor Size22 AWG 
Cable SealMolded PolyurethaneFor polyurethane cable
 FKM GlandFor ETFE cable
TEMPERATURE OUTPUT OPTION (not intrinsically safety approved)
Temperature Range-20 to 60ºCAvailable for 4-20mA output versions only
Output Signal4-20mA 
Temperature Measurement
±4ºC± 1ºC with single point calibration
LIGHTNING PROTECTION (power supply needs to be limited to 150mA to avoid lock up of the gas tube after a suppression event)
Life Expectancy>1,000 Operations 
Peak Clamping Voltage36 Volts 
Response Time<10 nsecs 
Shunts20,000 Amperes 

Download Datasheet: TE Level Sensor Readily Available (539)

Reference: te.com

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