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Pressure Transducer Basics

Please note that these terms are often interchanged without regard to the meaning below, and that the exact definitions may differ from source to source. These are general definitions. A pressure sensor is typically a millivolt output signal(converts a physical signal into an electrical signal), a transducer has an amplified voltage output(converts a signal from one physical form to a corresponding signal that having a different physical form), and a transmitter offers a 4-20mA output signal(carries the data and send out).     Read More: Pressure Sensor vs Transducer vs Transmitter

Long-term stability is normally associated with the change in zero offset due to aging of component and relaxation of the metallic diaphragm over a period of time. It normally causes the zero reading to go high or low over time. Independent tests carried out have shown this number to be <0.25% under the influence of temperature and pressure cycling for 1500hrs.

A: Gauge pressure is referenced to the barometric pressure conditions.  Changes in barometric pressure do not change the output signal of the sensor.  Absolute pressure sensors and transducers are referenced to a full vacuum; and the output signal of the sensor will change with changes in elevation and with changes in barometric pressure.  Differential pressure is the difference in pressure between two points; this is commonly used in filtration applications.Read More: Differential Pressure Transducers for Filtration

A compound pressure transducer is a gauge or sealed gauge sensor that is calibrated to emulate an absolute range.  The pressure transducer will measure a vacuum within its calibrated range.     Read More: Compound Pressure Transducer

Mechanical Interfaces

XIDIBEI offers various standard connections, typically threaded. Both standard configuration and custom configuration for OEM applications or purposes are available. Threaded connections are available in male and female connections and can be designed with tapered seal, O-ring, or metal to metal seals. Higher pressure ranges require the connection to be rated for the pressure as well.  Please contact us for more details if you need any customization.   Common Thread Types: NPT, SAE / UNF, G(BSP), Metric, DIN standard.

Electrical Interfaces

The electrical interface is dependent on the product selected.  Certain products, due to hazardous location services or IP ratings, require specific electrical connections.  XIDIBEI supply pressure transducers with integral connectors, in-line connectors, and cable options. Both standard and custom designs are available.  Common Types: Gland direct cable, Packard, M12-3Pin, M12-4Pin, M12-5Pin, integrated M12-3Pin, Hirschman DIN43650A, Hirschman DIN43650C, Direct plastic cable.

Output Signal Selection

Piezoresistive elements are connected in a Wheatstone Bridge configuration.  As the applied pressure varies, the bridge provides a varying differential voltage output to an electronic amplifier.     Selecting an output signal requires an understanding of the application, environment, supply voltage and its regulation, and system capabilities to read and process the signal.  XIDIBEI offers various analog and digital output signals for its pressure transducers, please contact us for more details.

Applications A

Yes, XIDIBEI’s sensing technology, application expertise, packaging, and electrical designs allow for our pressure transducers to be designed to various hydraulic application conditions. Please contact us to learn more.

Traditional HVAC systems used pressure and temperature sensors to control basic operations such as turning it on or off and opening or closing valves or vents. Since HVAC systems have evolved to be more efficient, sensing capabilities have advanced to include variable refrigerant flow, variable speed motors and blowers, electronic expansion valves, and many other control methodologies to finely tune the system and minimize the overall energy use. Please contact us to learn more.

1)Pressure range, bar, psi, kg or else, gauge pressure, absolute, seal pressure. 2)Output signal: 4-20mA, 0.5-4.5V, 0-5V, 1-5V, 0-10V, I2C, RS485, etc. 3)Power supply: 12-36V DC, 0-5V DC, 5-12V DC, etc. 4)Thread size: G(BSP), NPT, PT, M, etc. 5)Electrical connection: Gland direct cable, Packard, M12, Hirschman DIN, Direct plastic cable, etc. 6)The cable length you need, 0.3m, 0.5m, 1m, 3m, etc. 7)Your medium, water, gas, oil, liquid, etc. 8)The place you use the sensors. 9)Accuracy: 1%, 0.5%, 0.25%, etc.

It is a linear curve. For example, the pressure range is 0-1.2Mpa, and the output is 0.5-4.5V. Then the signal curve will output 0.5V at 0Mpa and 4.5V at 1.2Mpa.

Yes, just to make sure the wiring is correct.

Applications B

As for 4-20mA version:Red wire is for +supply, black wire is for +output. And there is a yellow shielded wire, which is optional to be connected. As for 0.5-4.5V version(or other within 0-5V), Red wire is for +supply, yellow wire is for +output, black wire is for GND.

In general, for ceramic sensors 4-20mA and 0-10V output is with an accuracy of 0.5% FS, others are 1%FS, while others such as, 0.2%FS, 0.1%FS is also available for customization.

Voltage output version will be affected. If need to extend the cable, please inform us before placing an order, and we will calibrate it before delivery.

Yes, it needs to be noted before placing an order. Attention: the sensor measuring normal pressure should not be used to measure vacuum, otherwise it will be damaged.

Yes, as long as the wiring connection is correct. Usually we use it to control water pump.

Applications C

Yes, but it usually has a MOQ. Please contact us if you have the requirement.

Yes, it is suitable for it. If SS304 is not enough for your requirement, SS316L is also available for customization.

Less than 5ms, usually within 4ms. .

Yes, under 3.3V input, output I2C. More detailed information is available.

Lead time

Below 10pcs, within 3-5 days; 10-50pcs, within 7 days