Small differential pressure transmitters use aluminum alloy or stainless steel shells, apply isolation technology, and convert the sensor into standard current or voltage signals after precision temperature compensation. They interface with industrial computers or distributed systems and are widely used for measuring air duct pressure or flow in power, petroleum, chemical, and metallurgical industries, achieving automatic measurement and control of production processes.

The small differential pressure transmitter is assembled with high-precision, ultra-low temperature drift (temperature automatic compensation) chip, color aluminum alloy shell, and stress isolation technology. It is converted into a 4-20mA standard signal through precision temperature compensation and amplification processing.

1. Adopting imported silicon differential pressure sensing chips;

2. The selected SMT process has zero point, full-scale compensation, and temperature compensation;

3. High precision and high stability amplification integrated circuits have moisture-proof, anti condensation, anti leakage, and lightning protection functions;

4. The minimum pressure range can reach 100Pa and can achieve 100KPA! Partial negative pressure can also be achieved! Various output signals are complete, commonly used for 4-20mA, 0-10V, 0-5V, etc

Main parameters:

Tested medium: gas (non corrosive, dust-free, and dry)

Pressure type: pressure, differential pressure (gauge pressure)

Range: -100KPa~50Pa-0-50Pa~3Kpa~100Kpa optional

Pressure resistance: twice the range value (usually referring to single end pressure)

Output: Analog output: 4-20mA (two-wire system), 0/1-5VDC, 0/1-10VDC (three wire system), RS485 (four wire system)

Comprehensive accuracy: ± 0.5% FS, ± 1% FS

Power supply: 24VDc (12-36VDC)

Insulation resistance: ≥ 1000 M Ω/100VDC

Load resistance: current output type 800 Ω; Voltage output type greater than 50K Ω

Medium temperature: -20~85 ℃

Environmental temperature: -20~85 ℃

Storage temperature: -40~90 ℃

Relative humidity: 0-95% RH

Sealing grade: IP65

Overload capacity: 150% FS

Response time: ≤ 10mS

Stability: ≤± 0.15% FS/year

Vibration impact: ≤± 0.15% FS/year (mechanical vibration frequency 20Hz~1000Hz)

Electrical connection: direct lead output; Standard wiring 1 meter

Pressure connection: M10X1 front end is equipped with a Φ 6 or Φ 8 tower shaped air pressure joint

Connecting thread material: aluminum alloy or stainless steel