Watlow Series 365 - Manual (Page 12)

12
WATLOW Series 365 User’s Manual
RTD Calibration
The Series 365 is calibrated and tested before leaving the factory.
RTD Calibration
365X-X1XX-X000
Equipment required:
• 1K
Ω
Decade Box
Setup:
1.
Wire your control for the correct line voltage. See power wiring on
Page 6, Figure 6.
2. Connect the decade box to the S1 and S2 terminals on the Series 365
(Terminals 2 and 3). See Page 7, Figure 9.
3. Make sure the heat/cool switch is in the correct position for your application.
See Page 6, Figure 5. Apply power.
4. Refer to Table 2 below for values that apply to your unit’s range code.
Procedure:
1.
Set the decade box to ______ , the Low
Ohms value. Turn the setpot fully CCW.
Adjust the Low pot until the unit just fully
de-energizes.
2. Set thedecade box to ______, the High
Ohms value. Turn the setpot fully CW.
Adjust the High pot until the unit just fully
de-energizes.
3. Repeat Steps 1 and 2 as necessary until
no further adjustment is needed.
Range Ohms
Code Low/High RTD Low High
Curve Ohms Ohms
101 -328 to 1112°F DIN 18.49 313.59
102 -328 to 1112°F JIS 17.14 317.28
Bottom View
High
Potentiometer
Low
Potentiometer
Table 2 -
RTD Input
Calibration Values