1. Virtually eliminating the friction generated by the rotation gear. 2. The inner table without filling liquid. No inertia, no drift pointer movement. 3. Excellent resistance to pressure overload, measurable, positive, negative or differential pressure. 4. Instruments must be mounted vertically, and strive to maintain the same level between the position of the measuring point. 5. In the measurement of corrosive media should be added to the isolation means and buffer means. 6. Meter storage environment ambient air can not contain harmful impurities, and the relative humidity is not too high. 7. The rectangular diaphragm pressure gauge is suitable for the measurement of the micro pressure and negative pressure of the gas, which can not be used for the corrosion of copper alloys, such as the ventilation equipment of the boiler. Note 1.Details page pictures is only for reference, part of a difference does not affect the user experience, please know it. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Please forgive it. Brand:ELECALL Model: YE-60 Optional Range: 0-10KPA Working Environment Temperature: -25 ~55 C Material: Phosphor Bronze Accuracy: 2.5(2.5%) Dial diameter: 60mm Connection: threaded connection Working Position: instrument vertical installation Package Size: 107*107*85 mm Package Weight: 205g The Relative Humidity: 80%, and the surrounding air does not contain the harmful gases of the corrosion meter Temperature Effect: the use of temperature deviation from 20 5 C, the temperature of the additional error is not greater than 0.4%/10