937B Controller Instruction Manual
pg. 8
Storage temperature range
-10° to 55°C (14° to 131°F)
Relative humidity
80% maximum for temperatures less than 31°C, decreasing
linearly to 50% maximum at 40°C
Altitude
2000 m (6561 ft) maximum
Insulation coordination
Installation (Over-voltage) Category II, Pollution Degree 2
Power requirement (nominal)
100 - 240 VAC, 50/60 Hz
Mains voltage
Fluctuations not to exceed ±10% of nominal
Power consumption
150 W maximum
Fuse rating, size
2X2A, 250V, Ø 5 mm x 20 mm
Process control relay
12 nonvolatile relays, (4 for each sensor module)
Relay rating
SPDT, 2 A @ 30 V resistive
Relay response
150 msec maximum
Analog outputs
5
One Buffered and one Logarithmic (
V = A × Lg(p) + B) or
Linear
(
V = A × p
) for each channel, up to two (2) wide-range
combination logarithmic outputs. Output impedance = 100 ohms
Number of channels
Up to 6
Front panel controls
Power ON-OFF switch, keypad for setup and operational
commands.
Display
320x240 color LCD with back lighting.
Pressure units
Torr, mbar, Pascal or microns
Update rate
LCD display is updated 3 times per second. The pressure
signals are updated every 50 msec.
Sensor module slots
3
Sensor modules
channels/module
Cold Cathode
single
Hot Cathode
single
Pirani/Convection Pirani
dual
Capacitance Manometer
dual
COM modules
Profibus (optional)
Computer interface
Serial
– RS-232 and RS-485 (standard); 9600, 19200, 38400,
57600,115200 baud rate selectable
Electronic casing
Aluminum
Dimensions (W x D x H)
9½" x 12¼" x 3½" (241 mm x 311 mm x 88 mm)
Size
½ rack, 2U high
5
Logarithmic/linear and combined logarithmic analog outputs can be customized using the system setup
menu.