1. Product overview:
The differential pressure transmitter adopts a piezoresistive pressure sensor chip, and uses the thin film resistance on the substrate to perform zero point correction, zero point temperature compensation and sensitivity compensation High-performance and stable chip package, the built-in processing circuit converts the sensor millivolt signal into standard voltage, The current signal, combined with unit instrument or DCS system, PLC, etc., constitutes an automatic control system, which is an ideal pressure measuring instrument in the field of industrial automation.
2. Product features:
1. Integrated chip, wide voltage power supply, cut-off frequency design, anti-interference, anti-lightning strike.
2. Exquisite structure, convenient installation, high cost performance and high stability.
3. Current limiting, voltage limiting, reverse polarity protection (current limiting output).
4. High precision, good stability and fast response
3. Typical applications:
It is widely used in air ducts, clean rooms, positive pressure air supply and other occasions, as well as process measurement and control of ventilation systems, fire prevention and exhaust systems, fan monitoring, and air conditioning filtration systems.
4. Technical parameters:
Measuring medium | gas |
Pressure range | -10kPa～0～10kPa |
pressure method | Differential pressure |
output signal | 4-20mA 0-10VDC 0-5VDC RS485 Customized |
Supply voltage | 9～30VDC conventional custom |
Accuracy class | 0.5%FS、1%FS |
working conditions | Medium temperature -40～85℃ Ambient temperature -40～85℃ |
Temperature compensation | -10～70℃ |
Seismic performance | 10g(20...2000Hz) |
response frequency | Analog signal output≤500Hz Digital signal output≤5Hz |
Stable performance | ±0.3% FS/year (range≥1kPa) ±0.5% FS/year (range＜1kPa) |
temperature drift | ±0.03%FS/℃ (within temperature compensation range) |
Protection class | IP65 |
Load characteristics | Current type load≤{(Us-7.5)÷0.02(Us=supply voltage)}Ω Voltage type load ≥100kΩ |
Electrical connections | lock wire |
5. Product pictures
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