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. A New


  • 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


Level Ranges
Full-scale level ranges
(Intermediate level ranges are available)
10 thru 50 ft. (3 thru 15 m) H20Vented gage reference
Proof pressure1.5 x FS
Burst pressure2.0 x FS
Static Performance
Level±0.01 ft. H20
±0.10% reading
BFSL method
Excitation±0.5 VDC8 to 28 volts
Resolution±0.0001% FS
Measurement Resolution
Excitation±0.1 VDC 
Excitation6-28V – VDC output 
Input current8 mA max
1.0 mA
Average current during data acquisition
InterfaceSDI-12, version 1.3
SDI-12 protocol
Approximate weight0.75 lbs. (340 g) transducer
0.05 lbs./ft. (79 g/m) cable
Cable jacket materialPolyurethane
Armored polyurethane (optional 859 accessory)
PVC jacketed steel armored polyurethane
Cable pull strength200 lbs. (90 kg)Polyurethane
Cable number of conductors4
Cable conductor size22 AWG
Cable sealMolded 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 

For further info please contact us, marketing@wmablog.com