Manual

Technical Reference
Field Calibration, Appendix
WATLOW Series 1500 User's Manual 79
10. Repeat Steps 5-8 until all the readings are correct with no further adjustments
necessary.
11. Turn power OFF. Set DIP Switch #7 ON (deg. C). Move DVM (+) plus lead to
Signal conditioner connector terminal 11 (terminal 4 for CH-2). Turn power back
ON.
12. Set mV Source as follows, and adjust "Deg. C Lo Pot" for the corresponding
DVM reading. Actual should read the value shown.
Type mV Source DVM Reading Actual Reading
J -0.885mV, (0°F) -0.028VDC ± 0.003 - 18°C ± 3
K -0.692mV, (0°F) -0.028VDC ± 0.003 - 18°C ± 3
R 2.282mV, (550°F) +0.448VDC ± 0.003 287°C ± 3
13. Set mV Source as follows, and adjust "Deg. C Hi Pot" for the corresponding
DVM reading. Actual should read the value shown.
Type mV Source DVM Reading Actual Reading
J 39.40mV, (1300°F) 1.100VDC ± 0.003 704°C 3
K 52.93mV, (2400°F) 2.055VDC ± 0.003 1315°C ± 3
R 20.28mV, (3100°F) 2.662VDC ± 0.003 1704°C ± 3
14. Set mV Source as follows. DVM and Actual Readings should be as shown.
Type mV Source DVM Reading Actual Reading
J 17.19mV, (600°F) 0.4922VDC ± 0.003 315°C ± 3
K 26.97mV, (1200°F) 1.014VDC ± 0.003 649°C ± 3
R 10.27mV, (1800°F) 1.534VDC ± 0.003 982°C ± 3
15. Repeat Steps 12-14 until all the readings are correct with no further adjustments
necessary.
16. If calibrating one channel at a time, power-down the Series 1500 and mV Source.
Move the C/J Compensator from the CH-1 connector terminals to the CH-2
terminals, and move the shorting wiring to the CH-1 terminals. Then perform
Steps 6-14 for CH-2.
Steps 10-14 only
required if the deg.
C Analog Output
is used.
NOTE
Field Calibration