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Brief Introduction
Model SG-3 and Model SG-3A, consisting of a thermocouple gauge of low vacuum and an ion gauge of high vacuum, are a kind of direct reading vacuum measuring instruments. They can be widely used to measure the vacuum of the air system in laboratories or in factories.
Model SG-3A is the improved type of Model SG-3. In comparison with Model SG-3, it has the advantages of little zero drift, low temperature-rising, reliable function and so on.
These two models are installed in standard meter cabinets, universal in use and easy to be used on rack or bench.
Main Technical Specification
| 1 | Input Power Supply: | 220V 50~60Hz AC |
| 2 | Measurement Ranges: | 1×10-3~1×10-7 Torr |
| Thermocouple: | 1×10-1~1×10-3 Torr | |
| Ionization Gauge: | 1×10-3~1×10-7 Torr | |
| 3 | Gauge Used: | |
| Thermocouple: | DL-3 Type | |
| Ionization Gauge: | DL-2 Type | |
| Emission Current: | 5 mA | |
| Accelerator voltage (referring to the filament): | +200V DC | |
| Collector voltage (refering to the filament): | -25V DC | |
| Sensitivity of the Gauge: | 20 Torr-1 | |
| 4 | Power Consumption | 35W approx. 55W (in air-exhausting condition) |
| 5 | Weight: | SG-3: 8kg; SG-3A: 10kg |
| 6 | Overall Dimensions: | SG-3: 350x250x165mm SG-3A: 140x440x280mm |