AC20C pressure transfer module series with a compact structure is easy to install, whose specifications could provide strong compatibility between sensitive components and the measured medium, excellent medium adaptability and long-term stability. The pressure transfer module could directly output what you need such as standard voltage, current, or digital signals. Because its PCB is fixed on the mounting bracket, pressure sensor needs a little installation room and provides strong anti-vibration performance. In terms of its ruggedness, pressure transfer module is widely implemented in various fields.


* Economical
* Standard signal output of 0.5-4.5V, 4-20mA
* Optional I²C digital signal output
* Modular design in a small structure
* Good stability
* High overloading
* Temperature range: -20… 85 ℃
* Wireless applications in Low-power supplies
* Diversified output signals, even customized


* Constant pressure or building water supply
* Machinery in industrial process control and monitor
* Automatic water pump controller or digital pressure gauge
* Environmental protection in Steel industry
* Medical or agricultural testing machinery
* Flow measure equipment
* Hydraulic and pneumatic control system
* Air-condition and refrigeration equipment
* Internal combustion engine, locomotive brake system, test stand

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Pressure Transfer Module

Measuring range 0 – 0.2MPa … 1MPa … 1.6MPa … 2MPa … 5MPa (any range available)
Overload pressure 2 times of full-scale
Pressure type ≤ 2MPa if Gauge pressure; ≥ 3MPa if sealed gauge pressure
Measurement medium Gas or liquid which is compatible with ceramics
Measurement accuracy ±1%FS; ±0.5%FS
Long-term stability ≤ ± 0.3% FS / year
Operating temperature -20 ~ 85 ℃
Zero temperature coefficient Typical: ± 0.03% FS / ℃; Maximum: ± 0.05% FS / ℃
Temperature sensitivity coefficient Typical: ± 0.03% FS / ℃; Maximum: ± 0.05% FS / ℃
Signal and power Optional signal Output signal Supply voltage
Current (2-wire) 4…20mA DC 9…32V
Voltage (3-wire) DC 0…5V DC 9…32V
DC 1…5V DC 9…32V
DC 0.5…4.5V DC 9…32V
Proportional voltage (3-wire) DC 0.5…4.5V DC 5V±10%
Low power analog signal (3-wire) DC 0.5…2.5V DC 3V±10%
Low power digital signal (4-wire) I²C DC 3…5V
* Other output signals could be provided
Load in Ω Current (two wires): ≤ [(supply voltage -7.5v) /0.02a]
Voltage (three wires): ≥10k
Total current consumption Current (2-wire system): Signal current, max. 25mA
Voltage (3-wire system): ≤3mA
I²C (4-wire system): ≤3mA
Impact resistance 100g, half sine of final peak serrated ladder type, runs for 6 ms
Anti-vibration ≤ ± 0.1% FS (X, Y, Z axis, 200Hz / g)
Insulation resistance > 100MΩ 500Vdc after applying voltage
Response time ≤ 2ms
Weight About 3.6g without cable
Resolution Infinitesimal (theoretical), 1/100000 (usually)
Protection class Waterproof (IP68)
Electromagnetic Compatibility EN50081-1;EN50082-2;IEC61000-4-3
AC20C Pressure transfer module
Model AC20C
Pressure Range 0 – 0.2MPa … 1MPa … 1.6MPa … 2MPa  … 5MPa
Accuracy ±0.5%
Output 0.5-4.5V

Model example:AC20C, 0~1MPa, ±0.5% accuracy, 4~20mA output

Selection tips:
1. The tested medium should be compatible with the materials in contact with the product.
2. For other requirements, please consult us and indicate what you need in the orders.
3. The rights to make technical modifications like its circuit structure and shape are reserved without prior notice.

1. Can be used for down-range, and the amplitude is controlled within ±50%FS.
2. The maximum pressure of the system should be less than the overload protection limit of the sensor, otherwise it will affect the service life of the product and damage the product.
3. Do not force to pull the pins or the leads of sensitive components.
4. Protect the isolation diaphragm at the front end of the pressure sensitive component to prevent the impact of the pressure sensitive component from damaging the sensitive component.
5. If you have special requirements on product performance parameters and functions, please contact us.

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