Domestic high-precision differential pressure transmitter

A high-precision differential pressure transmitter is a precision instrument used for measuring and monitoring fluid pressure differences. It measures the pressure difference between two different points and converts the difference into a standard electrical signal (such as 420mA, 05V, etc.) for subsequent measurement, control, and analysis. Its working principle depends on the differential pressure generated by the double-sided pressure tube.

A high-precision differential pressure transmitter is a precision instrument used for measuring and monitoring fluid pressure differences. It measures the pressure difference between two different points and converts the difference into a standard electrical signal (such as 420mA, 05V, etc.) for subsequent measurement, control, and analysis. Its working principle depends on the differential pressure generated by the double-sided pressure tube. This differential pressure directly acts on the double-sided isolation diaphragm on the transmitter sensor and is transmitted to the measuring element through the sealing liquid inside the diaphragm. The measuring element is responsible for converting the perceived differential pressure signal into a corresponding electrical signal, which is then transmitted to the converter. After amplification and other processing, the converter converts this electrical signal into a standard electrical signal output.

The structural characteristics of high-precision differential pressure transmitter:

High precision and stability: With high measurement accuracy and stability, it can provide accurate pressure difference measurement results and meet various precision measurement and control needs.

Wide measurement range: It can adapt to various pressure difference ranges and meet the needs of different applications.

Advanced sensor technology: Some high-precision differential pressure transmitters use monocrystalline silicon resonant sensors or piezoresistive sensor technology to improve measurement accuracy and reliability.

Intelligence and miniaturization: With the development of technology, high-precision differential pressure transmitters are moving towards intelligence and miniaturization, with stronger data processing capabilities and smaller volumes.

Widely used in the field of industrial automation, such as petrochemicals, power, pharmaceuticals, etc., it is used to measure fluid pressure, flow rate, liquid level and other parameters to ensure the stability and efficiency of the production process. In addition, it is widely used in environmental monitoring, air conditioning and ventilation systems, aerospace and other fields.

Selection and installation of high-precision differential pressure transmitters:

Selection: When selecting, it is necessary to comprehensively consider factors such as actual measurement requirements, medium characteristics, environmental temperature, etc., and choose suitable models and specifications.

Installation: When installing high-precision differential pressure transmitters, it is necessary to ensure that the installation position is correct, firmly fixed, and avoid being affected by mechanical shock and vibration. At the same time, it is necessary to follow the manufacturer's instructions for wiring and debugging to ensure the accuracy of the measurement results.

Performance parameters of high-precision differential pressure transmitter:

Range ratio: 10:1 or 100:1

Power supply impact:<0.005% output range/V

Load impact: When the power supply is stable, there is no load impact.

Measurement accuracy: ± 0.1%, ± 0.2% of the calibration range (standard accuracy is ± 0.2%, if other accuracies are selected, please indicate them when ordering and selecting.)

Damping: usually adjustable between 0.1 and 16 seconds.

Start time:<2 seconds, no preheating required

Working environment: ambient temperature -29~93 ℃ (analog amplifier)

-29~75 ℃ (digital/smart amplifier)

-29-65 ℃ (with display header)

Environmental humidity: 0-95%

Protection feature: IP65 protection capability

Explosion proof type: Explosion proof Exd II BT4-6

Intrinsically safe Exia II CT5

Static pressure influence: Zero position error: ± 0.5% range limit, calibrated by zeroing for 32MPa under pipeline pressure.

Electromagnetic radiation impact: 0.05% range value, accepted radiation frequency of 27-500MHz, test field strength of 3V/m.

Indicator (%): LCD digital display accuracy ± 0.2%

Vibration effect: ± 0.05%/g when vibrating at 200Hz in any direction.

Installation position: The diaphragm is not installed vertically, which may result in a zero point error of less than 0.24KPa, but it can be corrected by adjusting the zero point.

Weight: 3.9Kg (excluding accessories)