Analog Test Point For Relay 2 - HELIX GRANVILLE-PHILLIPS Convectron ATM Instruction Manual

Chapter 3
Figure 3-13 Test points and potentiometer for setpoint relay 2
SP2 ADJ potentiometer
32
2. Use a high-precision, high-input impedance (Z
measure the setpoint voltage across the SETPOINT2 and COMMON
test points on the module front panel. Figure 3-13 illustrates
SETPOINT2 and COMMON test points.
3. Use a flat-head instrument screwdriver to adjust the SETPOINT2
potentiometer for the desired setpoint voltage at which relay 2 will
activate and deactivate. (See Figure 3-13.)
A built-in 8 Torr hysteresis prevents oscillation around the setpoint.
SETPOINT2 test point
Convectron
COMMON test point
®
ATM Vacuum Gauge Module Instruction Manual
> 1 MΩ) DVM to
in