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Industry Information
When the electric contact pressure gauge pointer reaches the upper or lower limit, both send and receive signals
2012-3-3 10:10:24

适用于测量对铜合金无腐蚀、无爆炸危险、非结晶的各种液体、气体等介质压力。 The electric contact pressure gauge is suitable for measuring the pressure of various liquids, gases and other mediums that do not corrode, non-explosive, and non-crystallize copper alloys. The instrument can be used with the corresponding electrical components to achieve the two-position automatic control and signal (alarm) for the maximum or minimum pressure value set in advance for the pressure system under test. The instrument has a measurement control function, which can set the upper and lower limit values arbitrarily. The operation is stable and reliable. It is widely used in industrial enterprises such as petroleum, chemical industry, power stations, metallurgy and mechanical and electrical equipment. The instrument 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 and displacement. After being enlarged by the transmission mechanism, it is 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. 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 frequent contact closures. Therefore, the meter has the advantages of reliable operation, long service life, and large contact switch power. Electric contact pressure gauges are widely used in petroleum, chemical, metallurgical, power station and other industrial sectors or in supporting mechanical and electrical equipment to measure the pressure of various fluid media without explosion danger. Generally, the electric contact pressure gauge is used with corresponding electrical devices (such as relays and contactors) to achieve the purpose of automatic control and signalling (alarm) for the pressure system under test (control).

为能适应被测对象的各种需求,江苏旭东仪表厂生产的系列电接点压力表在原有普通型和专用型的基础上,又相继研制了抗振型、耐蚀型、耐蚀抗振型以及带有隔离装置等多种类型共10多种型号的产品。 In order to meet the various needs of the measured object, the series of electrical contact pressure gauges produced by Jiangsu Xudong Instrument Factory have developed anti-vibration, corrosion-resistant, Corrosion-resistant and anti-vibration type and a variety of types with isolation devices and a total of more than 10 types of products. In view of the fact that this series of electrical contact pressure gauges not only have the characteristics of novel design, reliable structure, complete varieties and specifications, good motion stability, and strong adaptability, but also have the advantages of measurement and control, simple installation, and low maintenance. The pressure gauge is an unparalleled pressure measurement and control instrument with a general pressure controller without instructions, no switching difference adjustment and no external setting device. Structure principle of magnetically assisted electric contact pressure gauge: The instrument consists of a measurement system, an indicating device, a magnetically assisted electric contact device, a housing, an adjustment device, and a junction box. When the measured pressure acts on the spring tube, the end of the spring tube is deformed correspondingly to cause displacement. After being enlarged by the transmission mechanism, it is indicated on the dial by the indicating device. 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 alarm.

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 frequent contact closures. Therefore, the meter has the advantages of reliable operation, long service life, and large contact switch power.
接触形式 Electric contact pressure gauge contact form
1. The upper and lower limits are normally open. When the pointer of the electrical contact pressure gauge reaches the upper or lower limit, it will send the signal;
2, upper limit normally open or normally closed, when the pressure gauge pointer reaches the upper limit, both on or off communication;
3. The lower and lower limit is normally open or normally closed. When the pointer of the electric contact pressure gauge reaches the lower limit, the communication is turned on or off;
Main technical parameter accuracy: Class 1.5 Measurement range: -0.1-0-0.1-60MPa
Environmental conditions: temperature -40- + 70 ℃; humidity is not more than 80%; (with isolation diaphragm device can increase the use temperature.)
Temperature influence: When the ambient temperature deviates from 20 ± 5 ℃, the indication error is 0.4% / 10 ℃.