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(1) product model specifications Product name: gas differential pressure gauge Product model: P-M040BL-501P Head diameter: 115mm Pressure range: 0~500Pa Installation mode: axial Joint specification: 1/8 pipe joint Accuracy grade: 2.5 level  (ii) product description: Gas differential pressure gauge, also known as differential pressure differential gauge, or differential pressure meter, mainly used for the measurement of small pressure and differential pressure (only for gas), often used for differential pressure monitoring of air or gas. The gas differential pressure gauge produced by our company adopts imported diaphragm and other components, with good performance and high accuracy. There are many kinds of ranges for you to choose from, and it is sure that it will suit your needs. Simple, friction-free magnetic spiral motion, which can quickly indicate the pressure of low-pressure air or non-corrosive gases, whether positive pressure, negative pressure or differential pressure. This design can prevent vibration, shaking and overpressure. The instrument panel is equipped with a zero setting device. You only need a simple rotating regulator to allow the meter to get accurate pressure readings at any environment or altitude. There is no need to fill the table with liquid, and there will be no vaporization, freezing or odor and water conditioning, and the price is not expensive. Can be used for bellows tiny pressure gauges cannot be measured, such as micro pressure under 1 kpa, is bellows pressure gauge pressure force measurement reach effective supplement range, a place for some special request can also be used to replace bellows pressure gauge. Instrument has high pressure low interfaces, and interface can meet high and low voltage respectively when measuring the differential interface, only positive pressure measurement can only meet high voltage side, can only when measuring the negative pressure to low pressure side, flexible application way to let you use rise very convenient.  (3) characteristics of PIONEER gas differential pressure gauge: 1. Measurable positive pressure, negative pressure or differential pressure; 2. A large number of measuring range, which can be better adapted to customer needs, minimum 0-60pa, maximum 0-10kpa; 3. The magnetic spiral vortex bar mechanism eliminates the friction caused by gear transmission. 4. The magnetic spiral motion of the instrument is safe and reliable. 5. The instrument panel has a zero adjusting device; 6. No liquid filling is needed in the table; 7. Non-inertia non-drift indicator movement; There is no lag in nature; 9. Excellent anti-vibration anti-jitter performance; 10.2 group pressure interface (side back) +3 installation modes = free and flexible application; 11. Wide use of space, capable of vibration, shaking and overpressure; 12. Flexible installation mode for easy removal; 13. A bright look makes the use of equipment more valuable; 14. There will not be a problem of evaporation, freezing or odour and the issue of regulating water; 15. Good precision, superior quality, reasonable price.  (iv) scope of application: The gas differential pressure gauge is used to measure the small pressure and differential pressure of dry and clean non-corrosive gases. It is used in the air compressor and the step machine.