User`s manual

30 WATLOW Series 965 User's Manual Appendix
Calibration
Figure 28 -
Calibration
Parameters
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Before attempting to calibrate,
make sure you have the proper
equipment called for in each procedure.
The Series 965 is calibrated and tested
before leaving the factory.
YES to calibrate, No skips to display test.
Restoring Factory Calibration
The rSt parameter restores the factory calibration values to the Series 965. If
you calibrate your control incorrectly, you have the option to default to the
original values. Once you leave the CAL menu, the values are entered.
1. Press the Up-arrow/Down-arrow keys simultaneously for three seconds.
The LOC parameter appears in the lower display. Continue holding the Up-
arrow/Down-arrow keys until the lower display reads CAL.
2. Press the Up-arrow key until YES appears in the upper display.
3. MODE through the calibration menu until rSt appears in the lower display.
4. Press the Up-arrow key until YES appears in the upper display.
5. Press the MODE key and the 965 advances to test the displays.
This procedure is used only to restore calibration, it is not meant to clear values.
Calibration Menu
Input 0.00mV for low input.
Input 50.00mV for high input.
Connect a Type "J" ambient compensator with inputs shorted.
Set the low resistance to 44.01Ω.
Set the high resistance to 255.42Ω.
Set the voltage source to 0.000 volts.
Set the voltage source to 5.000 volts.
Set the current source to 4.00mA.
Set the current source to 20.00mA.
Enter 4-20mA output calibration value for 4mA.
Enter 4-20mA output calibration value for 20mA.
Restores factory calibration values.
Factory use only.
Select US (rate, reset, proportional band in degrees or units, °F) or
SI (integral, derivative, proportional band in % of span, °C)
Factory use only.
CAL
0.00
50.0
tC
440
255
0.00
5.00
4.00
20.0
rSt
dSP
dFL
4A0
2A0
MEM
( )
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( )
( )
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( )
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No
Yes