HONGQI INSTRUMENT (CHANGXING) CO.,LTD CHINA

Pressure gauge industry experts, the biggest pressure gauge manufacturers in China

Home > NEWS > Content
Digital Pressure Gauge Test Requirements
- Jun 30, 2017 -

Pressure gauge in fact, Digital Pressure Gauge regardless of hydraulic or pressure, that is, hydraulic pressure gauge, can also be used in air pressure test. Digital Pressure Gauge The pressure gauge on the hydraulic station can also be used in steel drums. The most important thing is that the pressure gauge pressure range to meet the test requirements.

In order to be reasonable, the economic use of the pressure gauge, the pressure gauge range can not be selected too much, but in order to ensure the measurement accuracy, Digital Pressure Gauge the measured pressure is not less than the minimum pressure gauge full scale of 1/3 is appropriate. At the same time in order to extend the life of the elastic components to avoid elastic components due to long-term force is too large and permanent deformation, the upper limit of the pressure gauge should be higher than the maximum measured (range of 1/2 to 1/3), leaving margin.

For example, the standard pressure of the drum airtight test is 30kPa, then the range of the pressure gauge for the airtight test should be 60kPa ~ 90kPa. Another example, Digital Pressure Gauge the steel drum hydraulic test standard pressure value of 250kPa, Digital Pressure Gauge then the hydraulic pressure gauge for the range should be selected 500kPa ~ 750kPa appropriate.

According to the national standard of the People's Republic of China GB / T 17344-1998 "packaging and packaging containers airtight test method" provides that the drum airtight test should be selected range of 0 ~ 100kPa kPa table. According to the national standard of the People's Republic of China GB / T 21279-2007 "dangerous chemicals packaging hydraulic test method" provides that the steel drum hydraulic test should be selected range of 0 ~ 800kPa kPa table.

The accuracy of the pressure gauge is determined by the maximum measurement error allowed by the test. Can not be considered the choice of the pressure gauge the higher the better, should meet the test requirements under the premise, as far as possible the use of low precision, cheap and durable instrument.

According to the national standard of the People's Republic of China GB / T 17344-1998 "packaging and packaging containers airtight test method" provides that the drum airtight test should be selected for the accuracy of two kaopo table. Steel drum hydraulic test can choose the accuracy of 1.6 or 2 level of the table

Digital pressure gauge in all aspects of the characteristics are better than the pointer pressure gauge, digital pressure gauge as the latest generation of pressure gauge to overcome the low voltage, low power consumption under the sensor performance, Digital Pressure Gauge successfully solved the sensor temperature drift and battery voltage fluctuations , Has become the best alternative to pointer pressure gauge. We can of course choose, Digital Pressure Gauge but the price of digital pressure gauge more expensive.

Automatic recording or alarm; the nature of the measured medium (such as the temperature of the measured medium, viscosity size, corrosive, dirty degree, whether flammable and explosive, etc.) whether the special requirements of the instrument, the site environmental conditions (such as humidity, Digital Pressure Gauge Temperature, magnetic field strength, vibration, etc.) on the type of instrument requirements. Digital Pressure Gauge Therefore, according to the technical requirements of the correct selection of instrument type is to ensure the normal work of the instrument and an important prerequisite for safe production.