• SDI-12 Submersible Level Transducer

SDI-12 Submersible Level Transducer


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The KPSI 500 submersible hydrostatic level transducer represents the leading edge of level sensing technology available today.

Incorporating a highly stable media-isolated sensor, the KPSI 500 features SDI-12 and RS-485 serial-digital interface standards. SDI-12 is a commonly used standard for interfacing data recorders with microprocessor-based sensors, in the environmental monitoring field. The KPSI 500 is an excellent solution for applications with requirements that require minimal current drain. It will accommodate cable lengths between sensor and recorder up to 1000 feet.

Features

  • SDI-12 Submersible Level Transducer
  • ±0.05% FS Total Error Band
  • Optional Lifetime Lightning Protection
  • Two year warranty
  • 1” DiameterCustom Polyurethane or ETFE Cable Lengths
  • Welded 316SS or Titanium
  • Custom Level Ranges up to 230 ft. (70m) H2O
  • Shipped with Long-Life Vent Filter
  • Removable Cable Options including PVC jacketed steel armored cable

Applications

  • Groundwater Monitoring
  • Down Hole
  • Surface Water Monitoring
  • Tailrace and Forebay Monitoring
  • Oceanographic Research
PARAMETERCOMMENT
LEVEL RANGES
Full Scale Level Ranges
(intermediate level ranges are available)
10 thru 230 ft. (3 thru 70m) H20Vented Gage Reference
Proof Pressure1.5 x FS
Burst Pressure2.0 x FS
STATIC PERFORMANCE
(Combined Errors Due to Nonlinearity, Hysteresis, Non-repeatability, and Thermal Effects over the Compensated Temperature Range)
Level±0.05% FS TEBFor level ranges > 10 ft. (3m) H2O
±0.10% FS TEBFor level ranges <= 10 ft. (3m) H2O
Temperature+0.5ºC
Excitation±0.5 VDC8 to 28 volts
Resolution+0.0001% FS
MEASUREMENT RESOLUTION
Level±0.0001%FS
Temperature±0.001ºC
Excitation±0.1 VDC
ENVIRONMENTAL
Wetted Materials316 SS or Titanium; POM; FKM; polyurethane or ETFE
Compensated Temp Range0 to 50ºC
Operating Temp Range-20 to 60 ºCWhen attached to polyurethane cable
Protection RatingIP 68, NEMA 6P
ELECTRICAL
Excitation6-28V – VDC output
Input Current8 mA maxAverage current during data acquisition
1.0 mAQuiescent
InterfaceSDI-12, version 1.3
RS-485SDI-12 protocol
CERTIFICATIONS
CE compliantEN 61326-1:2013 and 61326-2-3:2013
PHYSICAL
Approximate Weight0.75 lbs. (340 g) transducer
0.05 lbs./ft. (79 g/m) cable
Cable Jacket MaterialPolyurethane
ETFE
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 PolyurethaneFor polyurethane cable
FKM GlandFor ETFE cable
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