PT-500 Pressure Sensor

Engineering & Marketing International

Pressure Transducer & Level Monitoring

Monitor liquid levels with a Pressure Transducer and a ControlByWeb® module Receive text messages or email alerts when a user-specified level is reached. Log and plot the level history, and more.

  • Max Water Depth: Up to 575 ft.
  • Pressure Range: Up to 250 psig
  • Modbus RS-485 | 4-20mA
  • External Power: 10-28 VDC

How do Pressure Transducers Work

Submersible pressure transducers work just like other pressure transducers, except they’re inside a water-tight housing, and they read in feet or inches of liquid (adjusted to specific gravity) rather than PSI.

When a pressure sensor is installed near the bottom of a tank. It uses an internal diaphragm which flexes with changes in pressure. This flexing sends an electrical signal to the attached ControlByWeb module which automatically calculates the depth. This data can then be viewed using a standard web browser over an IP network.

Liquid Types

The PT-500 is ideal for clean liquids and can be fitted with a protective cage, making it well suited to handle dirty liquids.

Stainless Steel Enclosure

The PT-500 Series are enclosed in stainless steel, making them compatible with most chemicals.

Sensor Output

  • Modbus RS-485

Easily configure sensor data using the X-404 Modbus Master Controller. No voltage scaling required!

  • 4-20mA

For exisiting systems that require 4-20mA, connect the sensor to one of our compatible devices (X-418, X-420, X-22s).

Sensor Specifications

  • PERFORMANCE
    • Max Water Depth: Up to 575 ft. (175.25m)
    • Pressure Range: Up to 250 psig
    • Accuracy: B.F.S.L. ≤ 0.25% of span
    • 1 year stability ≤ 0.25% of span
    • Temp. Compensation Range: 32 to 122°F (o to 50°C)
    • Temp. Error (reference temp 70°F): Zero: ≤ 0.025% F.S./°F | Span: ≤ 0.025% F.S./°F
  • OUTPUTS
    • RS-485 Modbus | 4-20mA
    • Call to configure
  • ELECTRICAL
    • 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
  • APPROVALS
    • Lightning Protection: Compliant with IEC 61000-4-5 Standards for electrical surges
    • Intrinsically Safe: 4-20mA, Class 1, Div. 1 Groups C & D
    • Single Seal
  • INTERNET CONNECTIVITY
    • NO CLOUD NEEDED! Remote connection available with ControlByWeb devices 
  • PROGRAMMING
    • Automatic programming via ControlByWeb device
  • SENSOR MATERIAL OPTIONS
    • 316L SS Sensor | Urethane Cable | Hytrel® Cable | PVC Cable | Delrin™ Nose Cone
  • ENVIRONMENTAL
    • Operating Temp: -40°C to 85°C
    • Enclosure Protecton: Submersible to 575 ft.
  • INSTALLATION
    • Top of tank | Head pressure | Simple to install and program