Electronic digital type multifunctional refrigerant pressure meter set

Abstract

The invention discloses an electronic digital type multifunctional refrigerant pressure meter set. A housing mainly internally comprises a display, a high / low-voltage temperature inductor, a control switch, a high / low-voltage supply and convey tube and a refrigerant conveying tube, wherein side tubes are fixed at the two sides of the housing; a detachable hanger is arranged on the back surface of the housing; the high / low-voltage temperature inductor of the display of the refrigerant pressure meter set is connected with the control switch; the control switch can be used for controlling refrigerant input amount of the high / low-voltage supply and convey tube; the control switch is connected with the refrigerant conveying tube; the refrigerant pressure meter set circuit comprises a micro processor, an operational amplifier and a multiplexing analog digital converters; a high / low-voltage temperature induction connecting head and a vacuum sensing joint are input to the micro processor after passing through the operational amplifier and the multiplexing analog digital converters; the refrigerant pressure meter set is further provided with the vacuum sensing joint and the high / low-voltage temperature induction connecting head. Operation staff can precisely obtain a refrigerant filling state, so that the refrigerant filling achieves precise value control, and the refrigerant filling amount is precisely controlled.

Description

technical field [0001] The invention relates to an instrument device, in particular to an electronic digital multifunctional refrigerant pressure gauge set. Background technique [0002] In the existing refrigerant filling process, in order to control the refrigerant filling amount, most of them are judged by the value displayed on the detection meter, which is used as the control of the refrigerant filling amount, and the refrigerant measuring meter is an analog pointer type, which can sense a single The pressure number will not only be misjudged due to visual errors, but also the pointer refrigerant measuring gauge cannot sense the temperature data, and the construction personnel rely on their own experience to judge during the measurement process, which cannot be precisely monitored and the filling amount will cause large errors . Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art a...

AI Technical Summary

Problems solved by technology

[0002] In the existing refrigerant filling process, in order to control the refrigerant filling amount, most of them are judged by the value displayed on the detection meter, which is used as the control of the refrigerant filling amount, and the refrigerant measuring meter is an analog pointer type, which can sense a single The pressure number will not only be misjudged due to visual errors, but also the pointer refrigerant measuring gauge cannot sense the temperature data, and the construction personnel rely on their own experience to judge during the measurement process, which cannot be precisely monitored and the filling amount will cause large errors

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