Omron GRT1 - 11-2007 Operation Manual page 241

Temperature Input Units
GRT1-TS2P/TS2PK
Adjustment Procedure
Flow
Connecting the Devices
Required for Adjustment
220
Prepare the devices required for adjustment.
Connect the device for adjustment.
To make the upper/lower limit adjustment, connect
a six-dial resistance box to the Temperature Input
Unit that is being adjusted.
Turn ON the power to the associated system devices.
Wait at least 30 minutes for the internal temperature
to stabilize.
Set the input's lower limit adjustment value.
Set the input's upper limit adjustment value.
Yes
Adjust the other input?
No
Test display accuracy after adjustment.
Note Only sensors that operate while the power supply is ON can be ad-
justed. When adjusting for a sensor that is not presently in use,
change the input type setting and perform the adjustment proce-
dure from the beginning of the flowchart.
This section explain how to connect the devices that must be connected to
make a user adjustment. Wire the following devices properly before making
an adjustment.
■
Six-dial Resistance Box and Precision Digital Multimeter
These are used to make adjustments at the upper limit and lower limit. Pre-
pare devices that can provide accurate resistance values for measurement.
Use a precision digital multimeter that can measure the resistance values and
indicate when the six-dial resistance box is not producing an accurate resis-
tance.
End
Section 6-4