- Reliable operation.
- Long service life.
- High-contact switch power.
- Gives rational operation control.
- Safety monitoring in pressure processes.
Your Expert Electric Contact Pressure Gauge Supplier in China
BCST electric contact pressure gauge is designed to measure the pressure of fluid medium with an electrical contact. The index contact is achieved by touching between a pointer and a set pointer.
BCST electric contact pressure gauge is widely used in petrochemical, chemical, metallurgical electric power field, etc. It gives rational operation control and safety monitoring in pressure processes.
BCST electric contact pressure gauge is an important tool in an industrial environment. Measuring the pressure level is very important to ensure a safety check for any leaks and product consistency.
Welcome to know more about our electric contact pressure gauge.
Your One-Stop Electric Contact Pressure Gauge Solution in China
Why Use BCST Electric Contact Pressure Gauge for Your Project
At BCST you can get a customized electric contact pressure gauge, you can add or remove features and create custom units when the application requires.
BCST offers various types of electric contact pressure gauges at affordable prices. With over 20 years of experience in manufacturing and trading, BCST is indeed your best partner in instrumentation and control.
If you have any questions, you are welcome to send us an inquiry.
Other Related Pressure Gage
Electric Contact Pressure Gauge
1. What’s the electric contact pressure gauge？
The electric contact pressure gauge can measure the pressure of various fluid media without the risk of explosion. It is widely used in petroleum, chemical, metallurgical, electric power, machinery, and other industrial sectors or mechanical and electrical equipment supporting. The electric contact pressure gauge is with the corresponding electrical devices (such as relays, frequency converters, etc.) supporting the use. That can be measured (control) pressure system to achieve automatic control and send a letter (alarm).
2. What’s the structural principle of an electric contact pressure gauge？
Electric contact pressure gauge by the measurement system, indication system, magnetic contact device, shell, adjustment device, junction box (plug seat), and other components. A general electric contact pressure gauge measures the positive and negative pressure of gas and liquid media that do not corrode copper and copper alloy. Stainless steel electric contact pressure gauge is applied to detect the gas and fluid medium positive and negative pressure without eroding the stainless steel. And when the pressure reaches a predefined value, a signal is issued to connect the control circuit to achieve the goal of automatic alarm control.
The electric contact pressure gauge is dependent on the pressure of the measured medium by the spring pipe in the measuring system, forcing the end of the spring pipe to produce a corresponding elastic deformation and produce a displacement. It is driven and amplified by the gear transmission mechanism with the help of a pull rod, and the measured value is indicated on the dial by the indication (together with the contacts) on the fixed gear. At the same time, when the connection (upper or lower limit) on the set pointer comes into contact (dynamic brake or dynamic close), the circuit in the control system is broken or switched on to achieve the purpose of automatic control sending letters and alarms.
3. What’s the electrical principle of an electric contact pressure gauge？
Take control of the compressor motor as an example: the pressure of the storage tank reaches the lower limit. So it automatically turns on, gets the upper limit, and stops automatically.
The control process is as follows: when the pressure reaches (or turns on with) the lower limit, the active contact of the electric contact pressure gauge (common end of the power supply) is connected to the lower limit contact, relay J1 operates and locks itself. Its ordinarily open communication closes to drive J3, and the motor is powered to run. When the pressure reaches the upper limit, the active connection is switched on with the upper contact, and relay J2 operates. Its normally closed contact breaks, cutting off the power supply to J1. Its ordinarily open contact breaks, J3 is released, and the motor stops. So on and so forth, to achieve the purpose of automatic control.
4. What are the types of electric contact pressure gauges？
Due to the different media to be measured, an electric contact pressure gauge can be divided into shock-resistant, corrosion-resistant, and explosion-proof electric contact pressure gauges, etc.
Specific measurement requirements are as follows：
Standard electric contact pressure gauge has no corrosion of copper alloy and irons to measure the pressure of gases and liquids.
Corrosion-resistant electric contact pressure gauge: the primary pressure measuring components and instrument housing is designed with stainless steel materials, suitable for measuring the pressure of more corrosive gases and liquids.
Anti-corrosion and vibration-resistant electric contact pressure gauge: by filling the gauge body with oil, the use of liquid damping to ensure vibration-free display. Suitable for measuring media with strong pulsation and environmental vibration.
The explosion-proof electric contact pressure gauge is suitable for hazardous places with explosive mixtures in the environment.
5. What are the technical parameters of an electric contact pressure gauge？
Dial scale range, accuracy class
|Scale Range (MPa)
|Accuracy class (%)
Note: The accuracy grades in parentheses are for special orders only.
6. What are the electrical parameters of the contact points for the electric contact pressure gauge？
Electric contact pressure gauge using working temperature:-25℃~55℃
The upper limit of operating pressure: not exceeding 2/3 of the maximum limit of the indicator.
Working environment vibration frequency: not more than 25Hz, amplitude: not more than 0.5mm
7. What’s the liquid connection material of the electric contact pressure gauge？
Available in copper alloy, 304 stainless steel, or 316 stainless steel for electric contact pressure gauges.
8. What are the advantages of the electric contact pressure gauge？
☆Straightforward and innovative design
☆Precise measurement and control to ensure safe and stable performance
☆Can reduce the work pressure and cost, to relieve the pressure burden of daily work.
☆A very long service life
☆Reliable structure, a complete range of specifications
☆Good operational stability
☆With measurement and control
9. What installation options and steps are available for the electric contact pressure gauge?
1) Radial direct mounting
2)Axial direct mounting
3)Radial direct mounting with the front edge
4)Axial direct mounting with the front edge
1) Close the shut-off valve at the front of the pressure guide tube
2) Turn off the power supply
3) the electric contact pressure gauge will be wrapped around the raw tape and connected to the pressure guide tube
4) Wiring of the electric contact pressure gauge
5) open the shut-off valve and adjust the high burst point and low burst point according to the corresponding requirements
10. What is the purpose of an electric contact pressure gauge pointer?
The upper pointer is the upper limit. The pointer below is the lower limit. The black color in the middle is the actual pressure value.
When the actual pressure is above the upper limit, it is connected to and disconnected from the lower limit.
When the actual pressure is between the upper and lower limits, the common terminal is disconnected from both the upper and lower limits.
The common terminal is connected to the lower limit and disconnected from the upper limit when the actual pressure is below the lower limit.
The electric contact pressure gauge controls the upper and lower pressure limits.
11. What does the electrical contact pressure gauge wiring diagram look like?
Electric contact pressure gauge 220V wiring diagram
Contact power:10VA;30VA(magnetic assisted)
Measure the pressure or negative pressure of liquid, gas, or steam that does not corrode copper and steel and their alloys, and send a signal or turn on the control circuit when the pressure reaches a predetermined value. When the environment vibration is significant, one can choose the magnetic-assisted electric contact pressure gauge.
12. How to calibrate an electric contact pressure gauge?
The electric contact pressure gauge is a pressure gauge manipulation circuit switch, only the standard pressure gauge on an additional electric contact signal device. Therefore, the pressure part of the calibration and calibration of the normal pressure gauge is the same, only the pressure part of the calibration after passing, but also need to increase the electric contact signal device calibration.
1)Pressure gauge installed in the calibrator
2)Use the needle pointer to set the two signal contact pointer to the upper and lower limits respectively
3)then carry out the value test.
After passing the value test, the upper and lower limits of the signal contact pointer are set at more than three different calibration points, slowly increase or reduce the pressure, until the signal is issued instantaneously, at which time the standard pressure table reading and signal pointer deviation between the indicated value, shall not exceed the absolute value of the allowable basic error.
13. What are the applications of electric contact pressure gauges?
The electric contact pressure gauge is suitable for measuring the pressure of various liquids, gases, and other media that are non-corrosive to copper alloy, non-explosive hazard, and non-crystalline. Electric contact pressure gauge with the corresponding electrical devices can be used to achieve the maximum or minimum pressure value of the measured pressure system to achieve pre-set double-position automatic control and send a letter (alarm) for purposes.
Electric contact pressure gauge with measurement and control functions can be arbitrarily set up, down control pressure value, stable and reliable action. It is widely used in petroleum, chemical, power station, metallurgy, and other industrial enterprises and electromechanical equipment.
14. What are the common problems with electric contact pressure gauges and how to deal with them?
1) The signal occurs too early or too late in the electric contact pressure gauge.
Cause and solution：
- The contact position is not correct.
The solution is: the contact will be corrected vertical to the proper occurrence of the signal.
- Contact metal rod is loose.
The solution is: should try to fix firmly, the more minor, using appropriate amplification of the swimmer, increase the swimmer’s counter-torque, also have an effect.
2) electric contact device does not occur signal.
Causes and solutions：
- contact too dirty contact poor.
The solution is sandpaper to remove the dirt.
- signal device insulation layer moisture.
The solution is: blow dry with hot air.
- the circuit is not working.
The method is: the circuit is not working, should find a break and be repaired.
3) No indication of pressure gauge
Causes and solutions：
①The cut-off valve on the pressure guide tube is not open.
The solution is: open the cut-off valve
②The pressure guide tube is blocked.
The solution is: remove the pressure guide tube, use the steel wire to unclog it, and use compressed air or steam to blow and clean it.
4) after the pressure gauge is removed, the pointer can not return to zero
Causes： Maybe the spring tube deformation failure.
The solution is: replace the pressure gauge.
4)Pressure gauge pointer has jumping or dull phenomenon
Causes: It may be that the pointer and surface glass or dial touch friction.
Solution: Replace the pressure gauge.