Digital pressure testers

Abstract

The invention discloses a digital pressure calibrator, which comprises a watch case, and a pressure introduction sealing joint is arranged at the lower part of the watch case, and one end of the pressure introduction sealing joint in the watch case is connected with a pressure sensor, and the power supply end of the pressure sensor is connected with an excitation Power supply, the output end of the pressure sensor is connected to a signal measurement unit, and the output end of the signal measurement unit is connected to a microcontroller; the microcontroller is connected to the excitation power supply, which controls the output excitation signal of the excitation power supply; the watch case There is also a pressure switch signal input terminal and an electrical signal input terminal, the pressure switch signal input terminal is directly connected to the microcontroller, and the electrical signal input terminal is connected to the signal measurement unit. The present invention is equipped with electric signal input terminals, pressure switch signal input terminals and 24V power output terminals, which enriches and improves the calibration detection function, and can be used for calibration detection of on-site pressure instruments, pressure transmitters, pressure switches and pressure controllers.

Description

technical field [0001] The invention relates to the field of instruments and meters, in particular to a pressure calibration and detection function and an electric signal detection function, which can not only calibrate and detect pressure instruments, pressure transmitters and pressure sensors, but also calibrate and detect pressure switches, pressure Digital pressure calibrator for the controller. Background technique [0002] At present, in the field of pressure testing technology in various industries, on-site pressure testing instruments are divided into pointer precision pressure gauges, digital precision pressure gauges, digital pressure gauges and digital pressure calibrators. [0003] The pointer type precision pressure gauge has the characteristics of cheap, intuitive reading, and no power supply, and is mostly used for calibrating and testing working pressure gauges. However, there are problems such as poor anti-vibration performance, difficult to read when vibra...

AI Technical Summary

Problems solved by technology

However, it lacks the electrical signal measurement function, so it cannot be used exclusively as a digital pressure calibrator

At present, there is no micro-power digital pressure calibrator, which not only has the function of pressure calibration and detection, but also has the function of electrical signal detection. It can not only calibrate and detect pressure instruments, pressure transmitters and pressure sensors, but also calibrate and detect pressure switches, pressure controller

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