Fire Extinguisher Pressure Gauge, comprising a casing part, measurement system, and indication part. The utility model is characterized in spiral sensing element spring tube which is provided with the spring piece, improving the strength and the elasticity. Spring tube and a spring piece formed by a two gap cavity can make the sensing element has good ventilation property. It improves the instrument sensitivity and display accuracy.
The utility model is suitable to measure the alloy of copper and tin lead solder without corrosion of various media ( including gas, liquid, solid state pressure fire extinguishing agent ). It can worked in a short period of blazing fire and environment of the normal work. This is the measurement of the pressure storage fire extinguisher ideal instrument.