• PT-500 Submersible Pressure Transmitter for Dirty Liquids
  • PT-500 Submersible Pressure Transducer with Tri-clover Process Connection
  • Submersible Pressure Transducer for Dirty Liquids

Submersible Pressure Transmitter For Dirty Liquids


Durability In Submerged Environments

The PT-500-P30 has a choice of patented removable, reusable or fixed, welded cage, and is designed for use in caustic, turbulent, and dirty liquid.


For caustic, turbulent, and dirty liquids. The PT-500 is the pinnacle of durability with a 316L SS, patented cage, and built-in lightning protection.

The PT-500 is designed for reliability in waste water and other dirty or turbulent liquids. Its unique set of features puts it in a class of its own:

  • Built-in lightning protection
  • Class 1, Div. 1/Zone 0 certification
  • Choice of patented re-usable cage or fixed, welded cage
  • Field adjustable zero
  • Conduit mounting threads
  • Ingenious and compact vent tube filter cap

Calibration Services

NIST Certificates and Re-Calibration

When you buy a PT-500 submersible pressure transducer, or any of our pressure sensors, request a NIST certificate for accuracy up to 0.1% full scale. We can do the same on your regular factory re-calibration, which we recommend doing annually.

Have your submersible pressure transducer re-calibrated at our factory on a regular basis. This will ensure accurate and reliability performance for years.



To 450 ft. deep
B.F.S.L. ≤ 0.25% of span
1 year stability ≤ 0.25% of span
Temperature Compensation Range
32 to 122° F (0 to 50° C)
Temperature Error (reference temp 70° F)
Zero: ≤ 0.025% F.S./°F
Span: ≤ 0.025% F.S./°F


Lightning Protection
Built In, Protected against reverse polarity, surge per IEC 61000-4-5
External Power
10-28 VDC
Vented Urethane Cable
Tensile Strength up to 200 lbs


Lightning Protection
Compliant with IEC 61000-4-5 Standards for electrical surges
CSA Intrinsically Safe
Class 1, Div. 1 Groups C & D


RS-485 Modbus
0-5 VDC
Internet Connectivity
Tank Cloud Compatible (Modbus version)
4-20mA version via RST-5003


mA & VDC Output:
Field Zero Adjustment
Modbus Output:
Modbus Software
mV/V Output:


316L SS Sensor
Urethane Cable
Hytrel® Cable
PVC Cable
Patented Removable/Reusable (U.S. Patent No. 7,787,330)


Operating Temperature
0 to 180° F
Enclosure Protection
Submersible to 450 ft.


Why the PT-500 is the Best Submersible Pressure Transducer in its Class

How to Re-zero the PT-500 Submersible Pressure Transducer

How to Clean Your PT-500 Submersible Pressure Transducer