TE KPSI 351 Submersible Hydrostatic Level Transducer

TE KPSI 351 Submersible Hydrostatic Level Transducer is specifically designed for small bore applications and to meet the rigorous environments encountered in groundwater level measurements. Designed and tuned to meet stringent USGS OSW specifications of ±0.01 Ft. H2O often required by governmental regulatory agencies and research institutions.

The KPSI 351 incorporates a highly stable media-isolated sensor and features an SDI-12 serial-digital interface. SDI-12 is a standard for interfacing data recorders with microprocessor-based sensors, especially in the environmental monitoring field. The KPSI 351 is an excellent solution for applications that require a minimal current drain. It will accommodate cable lengths between sensors and recorder up to 1000 feet. The removable cable option allows easy substitution of transducers and cables.

TE KPSI 351 Submersible Hydrostatic Level Transducer Features

  • Removable cable option
  • Custom Polyurethane or ETFE Cable Lengths
  • Optional PVC jacketed steel armored cable
  • Welded 316SS or Titanium
  • Custom Level Ranges up to 50 ft. (15m) H2O
  • Multiple Nose Cap Options
  • Shipped with Long-Life Vent Filter


  • Groundwater Monitoring
  • Down Hole
  • Surface Water Monitoring
  • Tailrace and Forebay Monitoring
  • Oceanographic Research

  Another Article:

TE KPSI 351 Submersible Hydrostatic Level Transducer Specification

Parameter Comment
Level Ranges
Full-scale level ranges
(Intermediate level ranges are available)
10 thru 50 ft. (3 thru 15 m) H20 Vented gage reference
Proof pressure 1.5 x FS
Burst pressure 2.0 x FS
Static Performance
Level ±0.01 ft. H20
±0.10% reading
BFSL method
Temperature ±0.5ºC
Excitation ±0.5 VDC 8 to 28 volts
Resolution ±0.0001% FS
Measurement Resolution
Level ±0.0001%FS
Temperature ±0.001ºC
Excitation ±0.1 VDC
Excitation 6-28V – VDC output
Input current 8 mA max
1.0 mA
Average current during data acquisition
Interface SDI-12, version 1.3
SDI-12 protocol
Approximate weight 0.75 lbs. (340 g) transducer
0.05 lbs./ft. (79 g/m) cable
Cable jacket material Polyurethane
Armored polyurethane (optional 859 accessory)
PVC jacketed steel armored polyurethane
Cable pull strength 200 lbs. (90 kg) Polyurethane
Cable number of conductors 4
Cable conductor size 22 AWG
Cable seal Molded polyurethane
FKM Gland
For polyurethane cable
For ETFE cable

Removable Cable and Nose Cap Options

TE KPSI 351 Submersible Hydrostatic Level Sensor Component

Download Datasheet: TE Connectivity KPSI 351 Submersible Level Transducer 


Rudy Wiratama


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