The contact's power of shockproof electric contact pressure gauge is small, and filling oil can extend its measuring system's life, but the contact's contact resistance increased because of the oil. The contact is easy to suffer losses. It is not fit for low voltage (high current) open busy.
       Protect relay can effectively solve by the aforementioned defects. It adjoins the gauge and process control circuit when working. It provides 0.2mA working current for the contact. The contact's open and close make the protect relay working. The protect relay's switch enlarge circuit can solve the effect of contact resistance, makes the contact trustworthy, protects the contact completely, and increases the contact's electric life. The output of import relay can take very high load. It is satisfied to the gauge's working demand (low voltage, high current).

Specification：

Equivalent output:

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