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Hot Cathode Ionization Vacuum Gauge
.ZJ-27 and JZ-10 hot cathode ionization gauge is now a commonly used wide-range high vacuum ionization gauge;
ZJ-27 hot cathode ionization gauge is now a commonly used wide-range high vacuum ionization gauge, having the merits of wide measuring range, good stability, anti-oxidation, etc.. Its cover employs DM-305 glass, porcelain-metal (naked gauge) for sealing.
Major Technical Specifications:
1. Measuring Range: 1.0*1002*10-5Pa
2. Above Earth Potential of Accelerating Electrode: 225 V
3. Above Earth Potential of Cathode: 25 V
4. Above Earth Potential of Collecting Electrode: 0 V
5. Emission Current: 100μa (10010-1Pa), 1 mA (10-210-5Pa)
6. Gauge Constant: 0.15+-15% Pa-1.
Cautions for Operation:
1. Check the vacuum degree to be no less than 5*10-2Pa before unsealing.
2. Avoid long time operation under low vacuum.
3. Install as vertical as it can.
4. Vacuum degree should be no less than 5*10-3Pa in case of gauge exhaust.
5. Keep in vacuum condition for long time unuse.
ZJ-10B (DL-5) ionization vacuum gauge has the merits of anti-oxidation, low filament working temperature, good linearity, etc. and is a kind of middle-vacuum gauge suitable for operation under high pressure. Its cover employs DM-305 glass, porcelain-metal (naked gauge) for sealing.
Major Technical Specifications:
1. Measuring Range: 6.5*101 2*10-4 Pa
2. Above Earth Potential of Accelerating Electrode: 165 V
3. Above Earth Potential of Cathode: 50 V
4. Above Earth Potential of Collecting Electrode: 0V
5. Emission Current: 50μA (65 - 10-2 Pa), 500μA (10-3 - 10-4 Pa)
6. Gauge Constant: 0.15 +- 15% Pa-1.
Cautions for Operation:
1. Check the vacuum degree to be no less than 5*10-2Pa before unsealing.
2. Install as vertical as it can.
3. Vacuum degree should be no less than 5*10-3Pa in case of gauge exhaust.
4. If the naked gauge is not used for a long time, keep in vacuum condition.