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KJLC® 937B Series Wide-Range Combination Gauges
These controllers combine the technologies of the cold cathode, standard Pirani, convection Pirani, thermocouple, and capacitance manometer sensors to measure from ultrahigh vacuum to overatmospheric pressure.
Features
- Control up to five sensors simultaneously
- Configured to the user's specifications regarding sensor, line voltage and frequency, units of measure, and communication choice
- May contain a cold cathode board, and can be configured with two more gauge boards to accommodate up to four additional gauges
- Can also be configured with two additional cold cathode boards, enabling the simultaneous operation of three high vacuum gauges
- Dual or single gauge boards for the standard Pirani, convection Pirani, thermocouple, and capacitance manometer sensors
Along with analog outputs, the 937B can input and output digital data for direct computer communication. A slot is available in the controller for an optional board that supports RS-232, RS-485, or Profibus DPV1 communications. The 937B can communicate with a host computer with either of these ports.
Specifications Table
| Measurement Range | 1 x 10-11 to 1 x 1,500 Torr (1.33 x 10-11 to 2,000 mbar) |
| Communications Interface | RS-232, RS-485, Profibus |
| Power Requirements | 100,120, 220, or 240 VAC, 50 or 60 Hz (35W) |
| Temperature (operating) | 5-40° C |
| Display | Digital LCD (5 separate pressure displays) |
| Set-Point Range | 5 (pressure dependent) |
| Set-Point Relays | 5 SPDT Relays, 2A @ 230 VAC |
| Analog Outputs | 1. Buffered analog outputs for each gauge 2. Logarithmic outputs for each gauge (0.6V/decade) 3. Combination output combining cold cathode with auxiliary |
| Response Time | < 1.0 sec |
| Leak Test | Relative logarithmic bar graph display & variable rate audio signal |
| Compatible Sensors (gauges) | Cold Cathode, Standard Pirani, Convection Pirani, Thermocouple, Capacitance Manometers |