ZJ-51 and M007 series long filament thermal couple (TC) is a kind of low vacuum gauge used in the earliest time at home, having the merits of simple in structure and convenient for operation. Its cover employs DM-305 glass, aluminum alloy, stainless steel, etc..
Major Technical Specifications:
1. Measuring Range: 6.65*101 1.33*10-1 Pa.
2. Filament Current: 90 - 130 mA.
3. Within the range of 13Pa1Pa, relative deviation between the standard curve and the standard characteristic curve is less than +-15%.
4. Vacuum degree within the glass gauge is not less than 5*10-2 Pa before unsealing.
Cautions for Operation:
1. Calibrate the heating current before unsealing.
2. The labeled heating current of the metal gauge can be used as reference for operation.
3. Better install the gauge vertically.
ZJ-53 and ZJ-54 (M713, M714) series short filament thermal couple gauge have the advantages of rapid response, anti-oxidation and stable performance, etc. Its cover adopts DM-305 glass, aluminum alloy, stainless steel, porcelain, etc.
Major Technical Specifications:
1. Measuring Range: 3*1021*10-1 Pa.
2. Heating Current: 27.5+-1.5 mA
3. Response Time: < 3s
4. Within the range of 150Pa, relative deviation between the calibration curve and the standard characteristic curve is less than +-15%.
5. Vacuum degree within the glass gauge is not less than 5*10-2 Pa before unsealing.
Cautions for Operation:
1. Measuring heating current value before unsealing.
2. The labeled heating current of the metal gauge can be referenced for operation.
3. Better use the gauge under vertical installation;
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