15
937A Multi-Sensor System
Analog Outputs
Buffered and Logarithmic (0.6 V/dec)
outputs for each channel
Two wide-range combination
logarithmic outputs.
Zout=100 ohms
Number of Channels
5
Front Panel Controls
Power on-off switch, 7-position
rotary switch for function selection,
5-position rotary switch for
sensor selection, 2 push-button
switches for adjustments & control
Display
All active channels displayed at
same time; LCD with 2 significant
digits (1 leading) and 1½-digit signed
exponent; 0.36"-high, 7-segment
digits; ±60° viewing angle; status
and error messages
Pressure Units
Torr, mbar, Pascal or microns
Update Rate
50 msec per sensor or 250 msec per
full set of sensors in
Pressure and
Leak Test modes, 100 msec per
sensor in all other modes
Leak Test
26-segment bar graph with a
variable rate audio signal
Sensor Module Slots
3 (1 for a cold cathode only, 2 for
any combination of cold cathode,
Pirani, capacitance manometer,
thermocouple, and convection
Pirani sensor modules)
Sensor Modules
channels/module*
Cold Cathode
single
Pirani
dual or single
Convection Pirani
dual or single
Capacitance Manometer
dual or single
Thermocouple
dual or single
*Single channel module allows one sensor to have two independent adjustable
set point relays in Slots A and B.
