In industrial production, Industrial pressure gauges are essential measuring instruments widely used across various industries such as mining, oil, chemical, power, and metallurgy. Selecting the appropriate industrial pressure gauge not only ensures the safety and efficiency of production but also extends the service life of equipment. This article will provide a detailed guide on how to select industrial pressure gauges, address common questions, and briefly introduce several related products from XRT Instruments. The aim is to assist you in making the best choices during the purchasing and usage process.
Fundamental Principles of Industrial Pressure Gauges
Industrial pressure gauge operate by sensing and displaying the pressure of fluids (liquids or gases). According to their working principles, pressure gauges are mainly categorized into mechanical pressure gauges and electronic pressure gauges.
Mechanical pressure gauges are instruments that directly convert the pressure of the measured medium into a pointer deflection through mechanical components to display the pressure value. Their basic working principle typically relies on the deformation of sensitive elements such as Bourdon tubes, diaphragm boxes, or membranes, which then indicate the corresponding pressure readings.
Electronic pressure gauges, on the other hand, utilize sensor technology to transform the physical quantity (i.e., pressure) into an electrical signal, which is then processed and displayed in digital form. These gauges are capable of providing precise measurements and can easily integrate with automated systems for real-time monitoring and control.
Industrial Pressure Gauge Selection Guide
When selecting industrial pressure gauge, several factors need to be considered comprehensively:
Measurement Range
Select the appropriate measuring range according to the actual application scenario. Normally, it is recommended that the long-term normal working pressure of the system does not exceed 2/3 of the upper limit of the range of the pressure gauge, in order to avoid the damage to the pressure gauge caused by prolonged high pressure. For example, if the working pressure of the equipment is 6.3MPa, it is advisable to use a pressure gauge with a range of 0-10MPa.
Accuracy Class
The accuracy class determines the measurement accuracy of the pressure gauge. For general measurement purposes, pressure gauges, aneroid gauges, and diaphragm gauges should typically be selected with an accuracy class of 1.6 or 2.5. For precision measurement and calibration, mechanical pressure gauges should be selected with an accuracy class of 0.4, 0.25, or 0.16.
Connection Type
The connection types of different equipment may vary, and attention should be paid to the compatibility of the connections when selecting pressure gauges. Common connection types include threaded connections, flange connections, quick connectors, etc. Confirm the connection type and size of the equipment to ensure that the selected pressure gauge can be installed correctly.
Operating Environment
The operating environment of a pressure gauge has a significant impact on its performance and lifespan. In special environments such as high temperatures, low temperatures, and corrosive media, pressure gauges that are resistant to high temperatures, low temperatures, and corrosion should be selected accordingly. Special requirements such as vibration resistance, explosion-proof, and protection should also be noted.
Special Features
Based on specific requirements, select Industrial pressure gauges with special features such as electrical signal output, alarm functions, remote transmission capabilities, etc. These features can enhance the level of intelligence in pressure measurement, facilitating remote monitoring and data management.
XRT Related Product Series
Y Series General Pressure Gauge
It is suitable for measuring the pressure of liquid, gas or steam medium which is non-corrosive to the pressure sensing element, the medium pulse and the environment vibration is not big, and the environment is not corrosive gas place.Click here to learn more about the product.
YN Series Vibration-Resistant Pressure Gauge
It is widely used in industrial processes with high requirements for corrosion resistance, vibration resistance, or appearance to measure the pressure of liquids, gases, or steam media that are non-corrosive to the pressure-sensing element. The vibration-resistant case is filled with silicone oil or glycerin as the damping fluid.Click here to learn more about the product.
Y-BF Series All Stainless Steel Pressure Gauge
Widely used for measuring the pressure of liquid, gas or vapor media that are non-corrosive to the sensing element in processes that require high corrosion resistance, vibration resistance or appearance. The vibration-resistant type is filled with silicone oil or glycerin as damping fluid.Click here to learn more about the product.
YTP Type Diaphragm-Sealed Corrosion-Resistant Pressure Gauge
Using an indirect measurement structure, it is suitable for measuring the pressure of viscous, easily crystallizing, highly corrosive liquids, gases, and other media with high temperatures. The instrument features an all-stainless steel construction, and the isolating diaphragm is available in various materials.
Specialized Pressure Gauge
Our company can manufacture specialized pressure gauges according to users’ actual needs, suitable for measuring special gas media or environments such as oxygen, hydrogen, ammonia, etc., ensuring safe and reliable use.
Main Technical Specifications
1.Display Accuracy
- Class 1.0 (special); Class 1.6; Class 2.5
2.Operating Temperature Range:
- Regular Products: Medium Temperature: -20°C to 70°C; Ambient Temperature: -25°C to 55°C (special high-temperature models need to be customized)
- Military and Other Special Products: Medium Temperature: -41°C to 70°C; Ambient Temperature: -41°C to 60°C
3.Resistance to Environmental Vibration:
- Regular Type: V.H.3 Class
- Vibration-Resistant Type: V.H.4 Class (compliant with relevant provisions of GB/T17214.3)
4.Materials for Pressure-Sensing System:
Pressure-Sensing Element: Tin Bronze QSn4-0.3 or Stainless Steel 316L
- Connector: Copper Alloy or Stainless Steel 304
- Flange: Stainless Steel 304 or Specified Material
- Isolating Diaphragm: Stainless Steel 316L or Specified Material
5.Materials for Case:
- Regular Type: Carbon Steel with Chromium Plating
- All-Stainless Steel Type: 1Cr18Ni9Ti or 0Cr18Ni9
6.Common Measurement Ranges:
- Vacuum and Pressure-Vacuum Ranges:-0.1-0；-0.1-0.15、3、0.5、0.9、1.5、2.4
- Pressure Ranges:0-0.1、16、0.25、0.4、0.6、1、1.6、2.5、4、6、10、16、25、40、60
Frequently Asked Questions About Industrial pressure gauge
Common Faults and Troubleshooting Methods for Pressure Gauges
Fault Phenomena | Influencing Factors | Troubleshooting Methods |
Pressure gauge shows no indication | 1)The root valve on the impulse piping is not opened; 2)The impulse piping is blocked. | 1)Open the root valve; 2)Remove the impulse piping, clear it with a steel wire, and then clean it thoroughly using compressed air or steam.
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The pointer vibrates excessively | 1)The pressure of the measured medium fluctuates greatly; 2)The installation location of the pressure gauge experiences significant vibration. | 1)Reduce the valve opening; 2)Secure the pressure gauge or, if permitted, move it to a location with less vibration. Alternatively, install a shock absorber.
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The pointer of the pressure gauge exhibits jumping or sluggish movement | The pointer is rubbing against the surface glass or the dial plate, causing collision. | Replace the pressure gauge. |
| The pointer fails to return to zero after pressure is removed | The bourdon tube is deformed and fails to function properly. | Replace the pressure gauge. |
Installation, Maintenance, and Servicing of Industrial pressure gauge
To ensure the long-term stable operation of pressure gauges, regular maintenance and servicing should be performed:
User Guide
1.Selection of Instrument:
Selection of Instrument: When measuring stable pressure, use within the range of 1/3-2/3 of its maximum allowable pressure value and upper scale limit. When measuring alternating pressure, use within the range of not more than 3/4 of the maximum allowable pressure and upper scale limit.
2.Installation Environment:
The instrument should be used under the conditions specified in its general technical performance to ensure that environments with vibration or sharp pulsations do not affect installation and reading. When the medium temperature is too high (exceeding 70°C), a heat dissipation tube must be used, and the medium should be cooled to the normal operating temperature before being introduced into the instrument. When pressure pulsations and environmental vibrations are excessive, corresponding damping devices (the medium should be relatively clean) and oil-filled vibration-resistant products should be selected to eliminate adverse effects, stabilize readings, and extend service life.
3.Installation Method:
The instrument should be fixedly installed through the instrument panel or reliably supported using a pressure-leading pipe. Before installation, read the instruction manual, verify the model and specifications, and check whether the pointer is at the zero position.
Maintenance and Care
1.Regular Verification:
Depending on the frequency of use and accuracy requirements, regular verification is necessary, preferably once every six months.
2.Prevention of Mechanical Damage:
Avoid exposing the pressure gauge to intense vibration and impact.
3.Keeping Clean:
Regularly clean the surface of the pressure gauge to prevent the accumulation of dust and dirt.
4.Corrosion Prevention:
When used in corrosive environments, pay attention to selecting corrosion-resistant materials and conduct regular inspections.
5.Fault Handling:
In case of faults (such as pressure-sensing element leakage or rupture leading to pressure relief, pointer detachment, loosening, and damping oil leakage), the use must be stopped and repairs must be carried out. The pressure gauge can only be used again after passing the inspection by an inspection agency with corresponding qualification.
Conclusion
Based on the above selection guide and FAQs, we hope to have assisted you in better understanding and utilizing industrial pressure gauges. If you encounter any additional questions during the selection and usage process, please feel free to leave a message for consultation, and we will be delighted to provide you with answers.
