Instructions:
1. Pressure gauge should be properly kept, keep clean often.
2. When useing and handling, and shall not be vibrated and collided fiercely, in order to avoid damage of the gauge. 3. When measuring the pressure, so as to use 3/4 of the upper limit value of the pressure; Measuring fluctuation pressure, shall not be more than two-thirds of the upper limit value of the pressure.
4. Usage environmental temperature range: -5 ~ 55 ° , relative humidity is 80%.
5. In order to ensure the accuracy of the gauge, should be regularly inspected and verified.