参考安装尺寸及与设备连接螺纹 Electric contact pressure gauge reference installation size and connection thread with equipment
In view of the fact that this series of meters not only have the characteristics of novel design, reliable structure, complete variety and specifications, good motion stability, and strong adaptability, but also have the advantages of measurement and control, simple installation, and small maintenance, so it is generally no instructions , No switching difference adjustment and nothing
The pressure measuring and controlling instrument unparalleled by the pressure controller of the setting device.
In order to meet the differences of the tested objects (there are requirements for shock resistance or corrosion resistance and explosion-proof), you can choose to meet the requirements of shock-resistant electrical contact pressure gauges or corrosion-resistant electrical contact pressure gauges and explosion-proof electrical contact pressure gauges.
The general type is suitable for measuring the pressure of gases and liquids that do not corrode copper alloys and iron.
The anti-corrosion type main pressure measuring element and the instrument shell are made of stainless steel, which is suitable for measuring the pressure of highly corrosive gases and liquids.
The shock-resistant type is filled with oil in the watch body and uses liquid damping to ensure a vibration-free display. It is suitable for places with strong pulsation of the medium and large environmental vibrations.
Explosion-proof type is suitable for dangerous places with explosive mixtures in the environment
的原理及应用 Principle and Application of Electric Contact Pressure Gauge
The electric contact pressure gauge is suitable for measuring the pressure of various liquids, gases and other mediums which have no corrosion, no explosion hazard, and are non-crystalline to copper alloys. The instrument can be used with the corresponding electrical components to achieve the double position of the maximum or minimum pressure value preset for the measured pressure system.
Purpose of automatic control and signaling (alarm).
It consists of a measurement system, an indicating device, a magnetically assisted electrical contact device, a housing, an adjustment device, and a junction box. When the measured pressure acts on the spring tube, the corresponding end of the spring tube produces a corresponding elastic deformation—displacement, which is amplified by the transmission mechanism and then indicated by the indicating device on the dial.
At the same time, when the pointer drives the movable contact of the electrical contact device to contact the contact (upper or lower limit) on the set pointer, the control system turns on or off the circuit to achieve the purpose of automatic control and signal alarm.
装置的电接触信号针上，装有可调节的永久磁钢，可以增加接点吸力，加快接触动作，从而使触点接触可靠，消除电弧，能有效地避免仪表由于工作环境振动或介质压力脉动造成触点的 The electric contact signal pin of the electric contact device is equipped with an adjustable permanent magnetic steel, which can increase the contact suction and speed up the contact action, thereby making the contact reliable, eliminating the arc, and effectively avoiding the instrument due to the working environment vibration or medium. Pressure pulsations cause contact
Frequent shutdown. Therefore, the meter has the advantages of reliable operation, long service life, and large contact switch power.
Electrical parameters and control form of contact device
Contact power maximum working voltage maximum working current control form
30VA (resistive load)
220VD or 380VA.C1A upper and lower limits, double upper limit, double lower limit