Analog Setpoint Relay; Diaphragm Zero Calibration - HELIX GRANVILLE-PHILLIPS Convectron ATM Instruction Manual

Chapter 3
Table 3-1 Front panel features
Feature
CONVECTRON ATM
ADJUST potentiometer
CONVECTRON VAC
ADJUST potentiometer
DIAPHRAGM ATM
ZERO adjust
potentiometer
SP1 ADJ potentiometer
SP2 ADJ potentiometer
Test points
Setpoint indicators
Power ON indicator
16
Description
Enables Convectron gauge calibration at
atmospheric pressure
Enables Convectron gauge calibration at
vacuum chamber pressure
Enables calibration of differential pressure
sensor zero
Enables setting of vacuum pressure at which
relay 1 activates and deactivates
Enables setting of differential pressure at which
relay 2 activates and deactivates
Enable checking of values for:
• Setpoint 1 voltage
• Setpoint 2 voltage
• Convectron gauge calibration at
atmospheric pressure
• Convectron gauge calibration at vacuum
chamber pressure
• Differential pressure sensor zero calibration
• SETPOINT1 is green when relay 1 is
activated
• SETPOINT2 is green when relay 2 is
activated
Is green when module power supply is ON
Before putting the module into operation, you must perform the following
procedures:
1. Install the module in accordance with the instructions on pages 5-13.
2. Develop a logic diagram of the process control function.
3. Use Table 3-2 to record the proposed setpoint in volts, corresponding
pressure setting in Torr, and activation direction for each relay.
Measure at:
CONVECTRON
ANALOG and
COMMON test points
CONVECTRON
ANALOG and
COMMON test points
DIAPHRAGM ZERO and
COMMON test points
SETPOINT1 and
COMMON test points
SETPOINT2 and
COMMON test points
See cells above in this
column
Not applicable (used for
monitoring relays)
Not applicable (used for
monitoring module
power supply)
®
Convectron ATM Vacuum Gauge Module Instruction Manual
Set to:
5.534 V at
760 Torr of N
2
0.375 V at
–4
1 x 10 Torr
of N
2
4.000 V
Application
specific
Application
specific
Application
specific
Not applicable
Not applicable