Watlow Series F4S/D - Manual (Page 108)

9 . 2 ■ C a l i b r a t i o n Wa t l o w S e r i e s F 4 S / D
Thermocouple Input Procedure
Equipment
• Type J reference compensator with reference
junction at 32°F (0°C), or type J thermocouple
calibrator to 32°F (0°C).
• Precision millivolt source, 0 to 50mV minimum
range, 0.002mV resolution.
Input x (1 to 3) Setup and Calibration
1. Connect the correct power supply to terminals
1, 2 and 3 (see the Wiring Chapter and the
Appendix).
2. Connect the millivolt source to Input 1 termi-
nals 62 (-) and 61 (+), Input 2 terminals 58 (-)
and 57 (+), or Input 3 terminals 56 (-) and 55
(+), with copper wire.
3. Enter 50.000mV from the millivolt source. Al-
low at least 10 seconds to stabilize. Press the
Right Key . once at the Calibrate Input x (1
to 3) prompt (Factory Page). At the 50.00mV
prompt press . once and to store 50.00mV
press the Up Key > once.
4. Enter 0.000mV from the millivolt source. Allow
at least 10 seconds to stabilize. At the 0.00mV
prompt press . once and to store 0.00mV
press > once.
5. Disconnect the millivolt source and connect the
reference compensator or thermocouple calibra-
tor to Input 1 terminals 62 (-) and 61 (+) or In-
put 2 or 3 terminals 58 (-) and 57 (+). W ith type
J thermocouple wire, if using a compensator,
turn it on and short the input wires. When us-
ing a type J calibrator, set it to simulate 32°F
(0°C). Allow 10 seconds for the controller to sta-
bilize. Press . once at the Calibrate Input x (1
or 2) prompt (Factory Page). At the 32°F Type J
prompt press . once and to store type J ther-
mocouple calibration press > once.
6. Rewire for operation and verify calibration.
RTD Input Procedure
Equipment
• 1k
Ω decade box with 0.01 Ω resolution.
Input x (1 to 3) Setup and Calibration
1. Connect the correct power supply to terminals
1, 2 and 3 (see the Wiring Chapter and the
Appendix).
2. Short Input 1 terminals 60, 61 and 62; Input 2
terminals 54, 57 and 58; or Input 3 terminals
52, 55 and 56 together with less than 0.1 Ω .
Press the Right Key . once at the Calibrate
Input x (1 to 3) prompt. At the Ground prompt
press . once and to store ground input press
the Up Key > once.
3. Short Input 1 terminals 60 and 61; Input 2 ter-
minals 54 and 57; or Input 3 terminals 52 and
55 together with less than 0.5 Ω . Press . once
at the Calibrate Input x (1 to 3) prompt. At the
Lead prompt press . once and to store lead
resistance press > once.
4. Connect the decade box to Input 1 terminals 60
(S2), 61 (S1) and 62 (S3); Input 2 terminals 54
(S2), 57 (S1) and 58 (S3); or Input 3 terminals
52 (S2), 55 (S1) and 56 (S3), with 20- to 24-
gauge wire.
5. For 100 Ω RTD, enter 15.00 Ω . For 500 Ω or 1k Ω
RTD, enter 240.00 Ω . Allow at least 10 seconds
to stabilize. Press . once at the Calibrate In-
put x (1 to 3) prompt (Factory Page). At the
15.00 Ω or 240.00 Ω * prompt press . once and
to store the 15.00 Ω or 240.00 Ω input press > once.
6. For 100 Ω RTD, enter 380.00 Ω . For 500 Ω or 1k Ω
RTD, enter 6080.00 Ω . Allow at least 10 seconds
to stabilize. Press . once at the Calibrate In-
put x (1 to 3) prompt. At the 380.0 Ω or
6080.00 Ω * prompt press . once and to store
the 380.00 Ω or 6080.00 Ω input press > once.
7. Rewire for operation and verify calibration.
Calibrating the Series F4
✔ NOTE:
You need the equipment listed and technical skills. Con-
trollers come calibrated from the factory. Recalibrate only
for other agency requirements or if temperatures aren’t ac-
curate as verified by another calibrated instrument.
*The tenth character of your model number determines
what prompts appear and what input resistance values to
use for the RTD calibration.
F4_ _-_ _ _ _-_(1 to 4) RG : 15.00 and 380.00
Ω
F4_ _-_ _ _ _-_(5 to 8) RG : 240.00 and 6080.00
Ω