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Absolute Pressure Transmitter

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  • Output: 4~20mA, Voltage Output
  • Pressure Range: ≤35bar, ≤400bar, 700bar
  • Accuracy: ≤0.50%FS
  • Other Options: Sanitary, Display, DNV
  • Pressure Type: Gauge & Absolute
  • Diameter: Φ27mm
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Absolute pressure transmitters introduction

Absolute pressure transmitters can measure the pressure of atmospheric air, other gases, vapors and liquids from the zero reference point, i.e. absolute vacuum. It is important to understand that any pressure transmitter takes measurements against reference pressure. Absolute pressure transmitters, for one, have absolute zero as that reference. There are also pressure transmitters that measure pressure against atmospheric pressure (gauge pressure transmitters), transmitters that measure vacuum pressure against atmospheric pressure (vacuum transmitters), transmitters that register two opposing pressures (differential pressure transmitters).


The absolute pressure transmitter is built around a sensor. One side of the sensor is exposed to vacuum created when it was made. The other side receives pressure from gas or liquid. The output signal from the sensor goes to the electronic unit that calculates the absolute pressure. There are analog and digital pressure transmitters. A digital pressure transmitter features a converter that converts analog signal into a digital one.


Absolute pressure transmitters Feature


  • Pressure range: from 0..0.04 to 0..40 bar, gauge, absolute, vacuum

  • Accuracy: 0.5 / 0.35 / 0.25 / 0.2% of span

  • Output signal: 0/4…20 mA, 0…10 V, 0…5 V, HART and other (Ex-version optional)

  • Sensor: silicon piezoresistive

  • Medium temperature limits: -40…+125°C

  • Ingress protection: IP 65-68

  • Pressure port: M10x1, M12x1, M20x1.5, G¼", G½", ¼" NPT, ½" NPT

  • Electrical connection: DIN 43650, Binder 723 (5 wire), M12x1 (4 wire), Cable gland PG7, Buccaneer

Optional Features


  • Corrosion-resistant metal housing for outdoor use

  • Outdoor housing (optional, on request): sealed integral cable connection, small size

  • Intrinsically safe design: 0ExiaIICT4

  • Custom transmitters tailored to your needs


Absolute pressure transmitters specification


Gauge pressure (GP) transmitter compares a process pressure against local ambient air pressure. Gauge pressure transmitters have ports to sample the ambient air pressure in real-time. Today’s highly accurate gauge pressure transmitters can be affected by fluctuations in the local ambient pressure. Measurements above the ambient air pressure are represented as a positive number, while negative number represents measurements below ambient. A gauge pressure measurement is indicated by the letter ‘g’ following the unit of measure of the reading (i.e., inH₂O(g) or psig).




Specification


 Pressure Type

 Gauge pressure/ absolute pressure /sealing pressure

 Power Supply

 12VDC   24VDC   12-36VDC

 Signal Output

 4-20mA 0-20mA 0-5V 1-5V 0-10V RS485

 Zero Drift

 ±0.03%FS℃

 Accuracy

 ±0.5%FS℃,0.3%FS optional

 Thermal Sensitivity Drift

 ±0.03%FS℃

 Long Term Stability

 ≤0.2%FS℃ one year

 Frequency Response(-3dB)

 5kHz~650kH

 Ingress Protection

 IP65

 Pressure Connection

 G1/4, G1/2,1/2NPT,1/4NPT, M20*1.5etc.(optional)

 Measure Medium

 Gas, water, oil etc. (non-explosion-proof area)

 Electrical Connections

 DIN connector type, M12 connector, cable connector type

 Time Response

<10ms

 Weight  Min,400g(depending on model)

 Housing material

304/316L stainless steel

 Fill Fluid

 Silicon oil

Gauge Pressure Transmitter structure



-Manuals

Absolute pressure transmitters

-Data sheet


Absolute pressure transmitters application


Absolute pressure transmitters allow measuring pressure of gases, liquids, including their aggressive varieties. Absolute pressure transmitters find their use in production environments where technological process parameters depend on the absolute pressure value. Absolute pressure transmitters are used in chemical, food industries, processing, oil and gas industries, laboratory research, pharmaceuticals production.


pressure transmitter application

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