ZJ-51 adopts platinum wire as heater strip,Ni and Cr-constantan as thermo wire,having simple structure and moderate price,using at the low vacuum measurement system of vacuum degree. Parameter of ZJ-51 Measuring range of vacuum degree:6.5×101-1×10-1(Pa) Heater current:90-130mA Heater cold-resistance:7±1.7Ω(at the room temperature) Heater temperature:40-150℃ Vacuum attended mode:φ15.5±0.5 DM-305 vacuum glass Baking temperature:80℃
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