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ARIPY

Time : 2020-03-02 17:08 Pageviews : 27

 

Digital pressure gauges are widely used in metrological verification and are widely used in every manufacturing industry.
The use of pressure gauges should be based on metrological verification regulations. Under the precondition of considering the production process regulations, the accuracy level, measurement range, type and model specifications should be fully considered in all directions in accordance with economical and applicable standards.
First, the selection of the accuracy level of the digital pressure gauge
The accuracy grade of the general pressure gauge is: 1.0 /0.4 /0.2 /0.1 can be selected
High-precision digital pressure gauge, that is, the accuracy level of high-precision digital pressure gauge reaches 0.02
Second, the selection of the measurement range of the digital pressure gauge
When choosing a digital pressure gauge, it is necessary to establish the working pressure of the measurement as: air pressure/compound type, micro pressure, basic, high pressure, the measured working pressure is not the same, the price will also be different.
What must be noted here is:
1. Accurate measurement of stable working pressure, the larger pressure should not exceed 2/3 of the measurement range.
2. When accurately measuring the pulsating working pressure, the larger pressure should not exceed 1/2 of the measuring range
3. When measuring high pressure accurately, the larger pressure should not exceed 3/5 of the measuring range
4. To ensure measurement accuracy, the minimum pressure should be no less than 1/3 of the measurement range.
According to the above standards, after calculating a standard value based on the measured larger working pressure, select the standard value slightly exceeding this value from the series of pressure gauge range products to select the measurement range.
Three, measurement medium selection
Accurate measurement of different media and application natural environment should use different pressure gauges
1. Water, gas, oil and liquid can be considered for corrosion-resistant media of stainless steel. Digital pressure gauges can all be considered
2. For special media, you can communicate with the manufacturer at the time of purchase. According to the use of different cores, different material casings and other customized solutions
4. Is it necessary to bring output or remote control data signal?
1. When there is a control or output requirement, a digital display pressure controller or pressure controller, a digital display electric contact pressure gauge, etc. can be used.
2. When there is a remote transmission requirement, a remote transmission type digital pressure gauge can be used. The remote transmission data signal has 4-20 mA or RS485.
3. If you want to store data information, you can choose a record-type digital pressure gauge (the record-type digital pressure gauge can generally store 200,000 data and information, connect to a computer through a USB interface, and export the data in real time).
4. In the end, it is necessary to establish the working voltage of the power supply system, the external thread socket, whether it must be explosion-proof type, the case size of the general digital pressure gauge, which can be purchased according to the specific requirements.
How to choose an affordable product that matches working conditions firmly believes that it is the first problem that every customer must fully consider. Based on the above, choosing a suitable digital pressure gauge must take into account the maximum overload and accuracy of the working pressure , Measuring medium, measuring range, external thread, power supply system (general intelligent digital pressure gauge is a rechargeable battery power supply system)
To learn more about digital pressure gauges, Aripy Instrument (Beijing) Co., Ltd. will help you deal with it. This company is an industrial production instrument manufacturing enterprise integrating technical professional product research and development, manufacturing, marketing, and after-sales service. , Specializing in the development of precision digital pressure gauges, intelligent digital pressure calibrators, high-precision pressure transmitters, pressure recorders and other products