• PT-500 Submersible Pressure Transducer for Clean Liquids
  • A PT-500 Pressure transducer is lowered into water. A cross section of the PT-500 shows the diaphragm being pushed upwards by the increased pressure as the water level rises.
  • PT-500 submerged in water
  • PT-500 being placed in water

Submersible Pressure Transducer For Clean Liquids


The Only One In It's Class

The PT- 500-P1 has a nose cone fitting and is designed for use in clean liquids.


Our submersible pressure transmitters are the only ones on the market with built-in lightning transience protection, Class 1, Div. 1 certification, and a field-adjustable zero.

Our submersible pressure transducers are not only built to very high standards of durability and quality, they're chuck full of features you won't find anywhere else:

  • Built-in lightning transience protection
  • Single seal for highest safety protection factor
  • Field adjustable zero
  • Conduit mounting threads
  • Ingenious and compact vent tube filter cap
  • and more
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.

Common Model Configurations

All common model configurations can be purchased online, click the model number link below. Refer to Model Number Configurator on the datasheet for a full list of configuration options.

Model Number Model Description
PT-500C-5-PSI-G-L1-E0-P1-40-N0 4-20 mA output, 0-5 PSI, 1/2" NPTM and removable nose cone, 40 ft. PVC cable
PT-500C-10-PSI-G-L1-E0-P1-40-N0 4-20 mA output, 0-10 PSI, 1/2" NPTM and removable nose cone, 40 ft. PVC cable
PT-500C-15-PSI-G-L1-E0-P1-60-N0 4-20 mA output, 0-15 PSI, 1/2" NPTM and removable nose cone, 60 ft. PVC cable
PT-500C-20-PSI-G-L1-E0-P1-60-N0 4-20 mA output, 0-20 PSI, 1/2"NPTM and removable nose cone, 60 ft. PVC cable


To 575 ft. (250 psi) 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 Transience 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 Transience Protection
Compliant with IEC 61000-4-5 Standards for electrical surges
CSA Intrinsically Safe
Class 1, Div. 1 Groups C & D
Single Seal


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
Delrin® Nose Cone


Operating Temperature
0 to 185° F
Enclosure Protection
Submersible to 575 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