The pressure transmitter uses a piezoresistive sensor with a stainless steel isolation diaphragm as the signal measurement element, and is automatically tested by a computer, and the zero point and sensitivity temperature compensation over a wide temperature range is performed using a laser resistance adjustment process. The amplifier circuit is located in the stainless steel housing and converts the sensor signal into a standard output signal.
The entire product has undergone rigorous testing and aging of components, semi-finished products and finished products. The product is widely used in on-site pressure measurement and control in industrial processes such as petroleum, chemical, metallurgy, electric power, and hydrology for its excellent reliability, wide adaptability, product flexibility and diversity
Working Principle
The pressure ofthe mediumto be measured acts directly on the diaphragm ofthe sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure, causing the resistance value ofthe sensor to change, and the electronic circuit detects this change and converts and outputs a standard measurement signal corresponding to this pressure.
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Sensor |
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Pressure Transmitter Schematic Diagram |
Product Features
Application Field
Pressure transmitters are generally used for pressure measurement in pipelines, boilers, and some sealed reactors, such as constant pressure water supply, water pumping stations, water supply and drainage treatment, circulating water monitoring, fire water monitoring, wastewater treatment, municipal sewage treatment, deep well water level, water tank water level, high-rise pool, geothermal well, mine, industrial pool, oil pool, reservoir and river water level monitoring, etc.
Technical Specification
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Measuring Range |
-0.1- 0~100MPa |
Accuracy |
≤±0.25%FS |
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Long-Term stability |
≤0.2% / year |
Over Load |
200%FS |
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Power Supply |
24V±20% |
Electrical Connection |
Hirschman / Aviation |
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Ingress Protection |
IP65 |
Thread Size |
M20*1.5 |
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Ambient Temperature |
-10℃~80℃ |
Temp Coefficient |
±0.02%FS/℃ |
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Storage Temperature |
-40℃~85℃ |
Humidly |
0~80% |
External dimensions diagram (reference)
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High-Temp Type |
Digital Display Type |
Standard Thread Type |
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Straight Outlet Type |
Waterproof Outlet(IP68) |
All stainless steel explosion-proof type |
Product Installation
It can bedirectly installed on the hydraulic pipeline through the pressure pipe joint (DIN3582 external thread M20*1.5) (other size joints can be specified when ordering). In critical applications (such as severe vibration or impact), the pressure pipe joint can be mechanically decoupled through a micro hose.
Wiring Guide
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Two-wire connection method(Hissmann connector type): Red wire: 24VDC |
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Three-wire connection method(Hissmann connector type): Red wire: 24VDC |
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RS485 output wiring (Hissman connector type): 1：Power Supply＋ |
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Two-wire current output (aviation type): Red wire: 24VDC positive Green wire: current output
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Line voltage output (aviation line type): Red wire: 24VDC positive |
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Two-wire connection (fully stainless steel explosion-proof type): Pin 1 ：24VDC
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Three-wire voltage output wiring diagram (all stainless steel explosion-proof type): Pin 1: 24VDC |
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