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Water Level Transmitter


  • Very Accurate (±0.1% Total Error Band), Reliable, and Economical
  • Available in any length of vented Polyethylene cable, with a conduit shield option
  • Temperature Compensation over -10 to 80°C
  • Environmental surface and groundwater monitoring applications
  • 0 to 2.5 V output, or 4-20 mA options
  • Exterior Constructed of 316L Stainless Steel, Polyamide and Fluorocarbon


Technical Notes

Manuals & Datasheets


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his durable weather instrument for monitoring water levels in streams, reservoirs, surface water, ground water, or tank levels can reliably and accurately provide you with consistent readings in a variety of operating conditions. This level transmitter was designed to provide a low-cost, reliable, industrial, submersible probe. Its simple design ensures trouble-free operation, yet provides very accurate readings when used with an Optimum Instruments Data Dolphin Series Data Logger. It has a stainless steel diaphragm with the option for titanium. 90 kg pull strength Polyethylene shield vented cable can be ordered to desired length, with the sensor including 25 feet standard. As an extra precaution to provide protection to the cable, aluminum flex conduit can also be added as an option to your cable. Flying leads provide power and output signal connections.

The level transmitter can be used with any of the Optimum Instruments Data Loggers and will include the proper cable termination to connect. The pressure range can be calibrated to be from 0 to 15 PSI (100 PSI available) or anywhere in between. A calibration certificate is included and can be generated from our website in the Support section, providing 24/7 access to your Data Dolphins input settings to match your transmitter.

Part Numbers


To Order, Call Us At 866-865-9778!


Power Requirements

Supply: (mA Out) 11 to 28 VDC
Supply: (Volt Out) 8 to 28 VDC
Load Resistance: Ω (mA Out) mA: < (Supply - 8V)/0.02A
Load Resistance: Ω (Volt Out) VDC: > 4KΩ


Pressure Range: 0 to 15 PSI (0 to 100 PSI option) or to customer specified range
Accuracy: ±0.1% T.E.B.
Compensated/Temp. Range: -10 to 80°C

Case Material

Standard 316L S.S (opt. titanium), Polyamide, Flurocarbon.
Vented and shielded Polyethylene cable, with optional Aluminum conduit jacket

Operating Temperature Range

Compensated/Temp. Range: -10 to 80°C