The 937B Digital Combination Vacuum Gauge Controller operates up to six vacuum pressure sensors simultaneously. This highly flexible vacuum gauge controller supports a wide range of sensor technologies, including cold cathode, hot cathode, standard Pirani, convection Pirani, Baratron® capacitance manometers and absolute Piezo sensors for a measurement range from ultra-high vacuum to above atmospheric pressure.
Simultaneous readout & control of up to 6 sensors and gauges
Wide measurement range from 10-11 to 20,000 Torr
Operate hot/cold cathodes, manometers, and Piezo/Pirani sensors concurrently
Modular design can be upgraded or reconfigured in the field
Leak test function with bar graph display and audio alarm
Computer Interface: RS232, RS485 (built in) and Profibus (optional)
Additional drawings are not available for this product.
Specifications
Measurement Range
1 x 10-11 to 20,000 Torr 1 x 10-11 to 2.7 x 104 mbar 1 x 10-9 to 2.7 x 106 Pascal 1 x 10-8 to 1 x 107 microns
Display
320x240 color QVGA TFT LCD with back lighting
Front Panel Controls
Power on-off switch, setup and operational commands can be accessed via the keypad
Power Requirements
100 to 240 VAC, 50/60 Hz, 150 watts (maximum)
Analog Output
Buffered, log linear & linear output for each channel & channel combinations
Set Point Contact Rating
2 amps @ 30 VAC
Set Point Configuration
Twelve pressure dependent SPDT relay set points
Operating Temperature
5-40° C (41-104°F)
Storage Temperature
-10 to 55°C (14-131°F)
Leak Test
Relative logarithmic bar graph display and variable rate audio signal
Weight
8 lbs (3.6 kg)
Compliance
CE
Features
The 937B controller is designed for versatility, reliability and economy. The large, easy to read, liquid crystal display provides readout for up to six sensors simultaneously. The back lit LCD display, intuitive menus and simple push button front panel, allows for ease in setup of the 937B.
The 937B, enables the use of any sensor card in each of the sensor card slots. The 937B can be configured with up to three hot or cold cathode type gauges, or three dual sensor cards for a maximum of six gauge connections.
Set Points: Twelve independently adjustable set points are standard. This allows for the automation of process related functions. The set point values are nonvolatile and remain unchanged after power down or power failure. They are easily viewed and configured in the channel set up screen. The 937B also includes an adjustable control set point that turns the cold cathode or hot cathode gauges power off or on, at the desired pressures, extending the sensor’s life.
Leak Test: The leak test mode includes a bar graph and variable audible alert to assist in locating leaks within a system. The function operates with the cold cathode, hot cathode, Pirani, and convection sensors. By taking advantage of differences in tracer gas sensitivity, this provides an excellent tool for helping locate coarse system leaks.
Analog Output Signals: The controller provides analog output signals accessible on the rear panel connector. Three types of analog signals are available. Unprocessed analog signals are used to provide the fastest response times. The logarithmic output voltages are scaled so that 0.6 Volts equals one decade of pressure. Combination output can be created by combining up to three sensors with a combined range from 10-11 to 20,000 Torr.
Digital Signals: In addition to analog outputs, the 937B communicates digitally for direct computer communication with built in connections for RS232 or RS485. A communication slot in the 937B chassis accepts an optional Profibus DPV1 board. The 937B can communicate with a host computer using either of these ports. Remote control of set points and cold cathode high voltage disable are some of the many features available with communications options.
The Series 937B controller includes a power cable, accessory connector kit, instruction manual, and space for up to three vacuum sensor cards shown below.
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100015132Vacuum Sensor Card, Dual Convection Pirani, Series 937B and 946 Controllers
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