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Various pressure gauges are suitable for measuring the pressure of liquids, vapors and gases without the risk of explosion, no crystallization, no solidification, and no corrosion to steel alloys. Stainless steel diaphragm pressure gauge price use working temperature: -40 °C ~ 70 °C, relative humidity is not greater than 85%
Instrument implementation standard: GB/T1226-2001
Structural principle: The measuring system of the instrument consists of a joint, a spring and a transmission mechanism. The meter reading is indicated by a pointer.
The correct selection of pressure detection instrument mainly includes determining the pressure type of the instrument (such as measuring the gauge pressure or differential pressure or negative pressure or absolute pressure), measuring range, measuring pressure unit, resolution, accuracy and sensitivity, and external dimensions And whether it needs remote transmission and has other functions such as indication, recording, adjustment, alarm, etc.
The main basis for selection:
1. Process production process requirements for measurement, including range and accuracy. In case of static test (or slow change), the maximum value of the measured pressure shall be set to two-thirds of the full-scale value of the pressure gauge; in the case of pulsation (fluctuation) pressure, the maximum value of the measured pressure shall be selected. One-half of the full-scale value.
The commonly used pressure detection instruments have an accuracy level of 0.25, 0.4, 1.0, 1.5, 2.5 and 5, etc., and should be selected from the requirements of the production process accuracy and the most economical point of view. The maximum allowable error of the instrument is the product of the range and accuracy percentage of the instrument. If the error value exceeds the accuracy of the process requirements, the pressure instrument with a higher level of accuracy must be replaced.
2. The properties of the measured medium, such as state (gas, liquid), temperature, viscosity, corrosion, degree of contamination, flammability, and explosiveness. Such as oxygen table, acetylene table, with "oil ban" signs, dedicated to special media corrosion pressure gauges, high temperature pressure gauges, diaphragm pressure gauges.
3. On-site environmental conditions such as ambient temperature, corrosion, vibration, and moisture levels. For instance, stainless shock pressure gauges for shockproof pressure gauges that are used in vibrating environmental conditions must be resistant to corrosion by all stainless steel pressure gauges.
4. Suitable for staff observations. According to the location of the instrument and lighting conditions, use the meter with different diameter (dimensions). For some special workplaces such as boilers and some reactors, 200mm diameter or larger is generally used.
5. Suitable for staff installation. According to the measuring instrument installation position and interface specification, the instrument with different installation method and interface is selected. If the pipeline is generally selected radial installation type, to facilitate the installation and reading, in the control panel of the equipment generally choose the axial front or axial bracket installation type, as for the ridge lines are required to make reservations interface, generally can When purchasing pressure gauges, manufacturers are required to make them according to requirements. If they cannot be customized, they can be realized with adjustable diameter or adapters. Under normal circumstances, they do not affect the use of the instrument and measurement accuracy.
Nominal diameter: Φ70Φ110Φ160Φ250mm
Accuracy grade: 0.4, 1.0, 1.6, 2.5
Range: 0~16Kpa, 0~2500Kpa
Installation type: radial axial protection rating: IP68
Case material: 304SS, 316SS, carbon steel, aluminum measuring element Material: 1, precision 0.4 copper alloy, 50CrV; 2, precision 1.0 ~ 2.5 copper alloy, 1Cr, 316SS, etc. Table Meng: safety glass pressure interface: radial Or axial G1/2, M20*1.5 or specified special requirements Working pressure: static load to 3/4 times the upper limit of measurement, exchange load to 2/3 times of the upper limit of measurement, short-term pressure To measure the upper limit.
Working conditions: The temperature of the environment and working medium should not exceed -40 to 70°C (accuracy 0.4) or -50 to 160°C (accuracy 1.0 to 2.5); relative humidity ≤80% Technical knowledge
Instrument implementation standard: GB/T1226-2001
Structural principle: The measuring system of the instrument consists of a joint, a spring and a transmission mechanism. The meter reading is indicated by a pointer.
The correct selection of pressure detection instrument mainly includes determining the pressure type of the instrument (such as measuring the gauge pressure or differential pressure or negative pressure or absolute pressure), measuring range, measuring pressure unit, resolution, accuracy and sensitivity, and external dimensions And whether it needs remote transmission and has other functions such as indication, recording, adjustment, alarm, etc.
The main basis for selection:
1. Process production process requirements for measurement, including range and accuracy. In case of static test (or slow change), the maximum value of the measured pressure shall be set to two-thirds of the full-scale value of the pressure gauge; in the case of pulsation (fluctuation) pressure, the maximum value of the measured pressure shall be selected. One-half of the full-scale value.
The commonly used pressure detection instruments have an accuracy level of 0.25, 0.4, 1.0, 1.5, 2.5 and 5, etc., and should be selected from the requirements of the production process accuracy and the most economical point of view. The maximum allowable error of the instrument is the product of the range and accuracy percentage of the instrument. If the error value exceeds the accuracy of the process requirements, the pressure instrument with a higher level of accuracy must be replaced.
2. The properties of the measured medium, such as state (gas, liquid), temperature, viscosity, corrosion, degree of contamination, flammability, and explosiveness. Such as oxygen table, acetylene table, with "oil ban" signs, dedicated to special media corrosion pressure gauges, high temperature pressure gauges, diaphragm pressure gauges.
3. On-site environmental conditions such as ambient temperature, corrosion, vibration, and moisture levels. For instance, stainless shock pressure gauges for shockproof pressure gauges that are used in vibrating environmental conditions must be resistant to corrosion by all stainless steel pressure gauges.
4. Suitable for staff observations. According to the location of the instrument and lighting conditions, use the meter with different diameter (dimensions). For some special workplaces such as boilers and some reactors, 200mm diameter or larger is generally used.
5. Suitable for staff installation. According to the measuring instrument installation position and interface specification, the instrument with different installation method and interface is selected. If the pipeline is generally selected radial installation type, to facilitate the installation and reading, in the control panel of the equipment generally choose the axial front or axial bracket installation type, as for the ridge lines are required to make reservations interface, generally can When purchasing pressure gauges, manufacturers are required to make them according to requirements. If they cannot be customized, they can be realized with adjustable diameter or adapters. Under normal circumstances, they do not affect the use of the instrument and measurement accuracy.
Nominal diameter: Φ70Φ110Φ160Φ250mm
Accuracy grade: 0.4, 1.0, 1.6, 2.5
Range: 0~16Kpa, 0~2500Kpa
Installation type: radial axial protection rating: IP68
Case material: 304SS, 316SS, carbon steel, aluminum measuring element Material: 1, precision 0.4 copper alloy, 50CrV; 2, precision 1.0 ~ 2.5 copper alloy, 1Cr, 316SS, etc. Table Meng: safety glass pressure interface: radial Or axial G1/2, M20*1.5 or specified special requirements Working pressure: static load to 3/4 times the upper limit of measurement, exchange load to 2/3 times of the upper limit of measurement, short-term pressure To measure the upper limit.
Working conditions: The temperature of the environment and working medium should not exceed -40 to 70°C (accuracy 0.4) or -50 to 160°C (accuracy 1.0 to 2.5); relative humidity ≤80% Technical knowledge
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