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Home / Computer Hardware, Monitors & Peripherals / Ceramic Pressure Sensor Module for Water/Air/Oil/Hydraulic Pressure and Resistive Liquid Level Sensing (Model CJ18-20A)

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Model Number CJ18-20A
Pressure Range 0-100 Bar
Output Signal 4-20mA / 0-10V
Supply Voltage 12-36 VDC
Accuracy ±0.5% FS
Medium Compatibility Water, Air, Oil, Hydraulic Fluid
Operating Temperature -40°C to 85°C
Sensor Material Ceramic Capacitive
Connection Type G1/4 Thread
Protection Class IP65

5 reviews

A

Anonymous

Mar 22, 2026

Rating: 4/5

Works as described

Using it for air pressure monitoring. It responds quickly to changes. Good product overall.

A

Anonymous

Mar 20, 2026

Rating: 4/5

Good value sensor

Solid sensor for the price point. Wiring was straightforward. Took off one star because the manual was brief.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Accurate measurements

Compared this with a calibrated gauge and the readings are very close. Great for monitoring water tank levels.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Excellent for hydraulic systems

Installed this on my hydraulic press setup. The readings are stable and consistent. Very happy with the performance.

A

Anonymous

Feb 10, 2026

Rating: 5/5

Robust build quality

The ceramic element feels durable. No leaks detected after a week of continuous operation under pressure.

5 FAQ

Q: How do I wire the 4-20mA output?

A: Refer to the diagram on the casing. It usually requires a 3-wire configuration for voltage or 2-wire for current.

Q: Is it suitable for high temperature steam?

A: No, the maximum operating temperature is 85°C. It is not recommended for steam applications.

Q: What is the thread size?

A: The standard process connection is a G1/4 inch thread.

Q: Can this handle corrosive chemicals?

A: It is designed for water, air, and oil. Strong acids or corrosive chemicals may damage the ceramic element.

Q: Does it come with a digital display?

A: No, this is a sensor module only. You need an external controller or PLC to read the output.

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