This pressure transmitter uses a high-precision, high-stability pressure sensor component from an internationally renowned company. Through a highly reliable amplification circuit and precise temperature compensation, it converts the pressure of the measured medium into 4～20mADC, 0～5VDC, 0～10VDC and 1～5VDC and other standard electrical signals. The high-quality sensor, sophisticated packaging technology, and comprehensive assembly processes ensure the product’s excellent quality and optimal performance. The product is available with multiple interface configurations and wiring options, meeting customer requirements to the greatest extent and making it suitable for use with various measurement and control devices.

Operating Principle

When a pressure signal acts on the sensor, the pressure sensor converts it into an electrical signal. After amplification by a differential amplifier and an output amplifier, the signal is finally converted through the V/A voltage-to-current converter into a 4-20mA standard current output signal that has a linear relationship with the liquid-level pressure of the measured medium (liquid).

Features:

Compact size, high cost performance, high stability, and high sensitivity

0～-0.1MPa to 0～250MPa

Strain gauge sensor  Diffused silicon sensor  Ceramic piezoresistive sensor optional

Stainless steel construction

Multiple measuring ranges available for convenient user adjustment

Optional zero/span adjustment/full-scale adjustment

Pressure types: gauge pressure, absolute pressure, and vacuum

Accuracy: 1.0 class, 0.5 class, 0.25 class, 0.1 class

A compact integrated LCD display and a display head with switch output are available as options

Laser marking can be used, ensuring product traceability 

Applications: 

Hydraulic and pneumatic control systems

Level measurement and control

Petrochemical, environmental protection, and air compression

Power station operation inspection and locomotive braking systems

Thermal power generating units

Light industry, machinery, and metallurgy

Building automation and constant-pressure water supply

Other automatic control and detection systems

Industrial process measurement and control

Laboratory pressure calibration 

Technical Parameters:

Measured media Various liquids, gases, or vapors compatible with 304/316 stainless steel

Measuring range Gauge pressure 0～0.01MPa to 0～250MPa Absolute pressure 0～0.1MPa to 0～250MPa Vacuum 0～-0.1MPa

Overload pressure 2 times full scale or 300MPa(whichever is lower)

Output signal 4～20mADC(two-wire) 0～10VDC, 0～5VDC, l～5VDC, 1-10VDC(three-wire)

Supply voltage 9～36VDC(two-wire), 24±5VDC(three-wire)

Medium temperature -30～+85℃

Ambient temperature -20～+85℃

Storage temperature -40～+90℃

Relative humidity ≤ 95％(40℃)

Rise time ≤5 ms to reach 90％FS

Accuracy 1.0 class, 0.5 class, 0.25 class (combined error including nonlinearity, repeatability, and hysteresis)

Zero adjustment ±8％ of output span

Span adjustment ±20％ of output span

Temperature drift ≤±0.05％FS／℃(temperature range -20～85℃, including the temperature effects on zero and span)

Temperature compensation range 0～70℃

Stability Typical: ±0.1％FS／year Maximum: ±0.2％FS／year

Wetted parts materials 316 stainless steel/304 stainless steel

Housing material 304 or 316 stainless steel

Installation method Threaded installation

Pressure connection M20×1.5, M12×l, Gl／4, Gl／2 male threads, etc.

Electrical connection four-core shielded cable (protection ratingIP65) aviation plug DIN connector