Constant current constant voltage excitation, constant current 0.4mA, constant voltage 2.5VDC.
ADC input amplitude is ± 5mV ~± 80mV, providing 24-bit core resolution, useful bits up to 18 bits, the circuit board built-in magnification is 12-200 times, support the sensor signal automatic polarity conversion.
Suitable for diffusion silicon pressure sensor, ceramic pressure sensor.
Provide the main variable zeroing, active and passive migration function, 19 kinds of unit conversion, 6 kinds of display mode, display resolution adjustment, restore factory data and other functions, suitable for the special needs of all kinds of customers.
2~5 point nonlinear correction function, eliminate the sensor's nonlinear error.
Full digital calibration, without any movable potentiometer, lower temperature drift.
Enhanced anti-interference design, suitable for a variety of electromagnetic environment harsh industrial environment.
Main parameters and indicators
Power supply voltage: 12~30VDC, recommended 24VDC.Power supply changes have no impact.
Signal range: the circuit board is ± 5mV ~± 80mV, corresponding to 1.5mA diffused silicon sensor output up to 320mV.
Constant current excitation: 0.4mA, suitable for constant current power supply sensor (3~ 8K ω).
Constant voltage excitation: 2.5VDC/0.5mA, suitable for ceramic piezoresistive sensors.
Working environment: temperature -30~80ºC, humidity <85%, dry no rot environment.
Dimensions: 53*53*23.
load resistance :(vcc-12)/20mA
Current output resolution: about 1uA
Temperature drift coefficient: <35ppm/ºC
Display range: -19999~99999




Kaifeng Chentong Automation Technology Company is a high-tech enterprise specialising in Research & Development, Design, Manufacture and the Marketing of flow meters. It is located in the beautiful demonstration area of FTA in Kaifeng City, Henan Province, covering an area of 6600 square meters, with more than 80 employees. The core team is a vigorous team among the millennials, Since its establishment, The Company believes in continuous innovation and has a strong focus on design and development with a view towards producing ′state of art′ products using modern machinery and a world class test rig.
Our company never forgets its industrial responsibility and social responsibility. Every year, we carry out cash poverty alleviation and goods donations to society, poor families, schools, medical care, etc. On a regular basis, which has been widely recognized by the society.
Kaifeng HENGMAN flow meters are calibrated to 0.2 class electromagnetic liquid standard device standard and 0.2 class static mass method water flow standard and gas nozzles using KROHNE - Germany MASTER meters. Adhering to the principle of people-oriented and rejuvenating the country through science and technology, the company has always put product improvement, development, accurate calibration, and after-sales service first, With excellent quality, our products are widely used in many industries such as petroleum, chemical industry, metallurgy, textile, machinery, heating, power supply, water supply, scientific research and environmental engineering.
Since its establishment, it has independently developed and produced 15 kinds of flow products, and successfully developed a variety of complete sets of automatic instruments and flow verification devices. It has obtained a variety of patents and industry certificates and won the national high-tech enterprise. SRDI enterprise (Specialized, Refinement, Differential, Innovation). More than 60 certificates, including "Enterprise Certificate Of Honoring Contract And Keeping Promise". "Kaifeng civilized and honest enterprise", "Flowmeter Form Approval Certificate", "Explosion-Proof Certificate", "SIL3 Certificate", "Quality Management System", "Software Copyright", "Product Patent", "CE Certificate", "Charity Enterprise", "Famous Brand", "Provincial And National Measurement Institute Device Identification Certificate"