Owner's manual

4 ■ Calibration Watlow Series 96
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 1 Setup and Calibration
1. Connect the correct power supply to terminals 8 and 9 (see Series 96 User’s Manual).
2. Connect the millivolt source to terminals 6 (-) and 7 (+) with copper wire.
3. Enter 50.000mV from the millivolt source. Allow at least 10 seconds to stabilize. Set
Thermocouple Calibration, 50mV [tc50] (Calibration 1 Menu) to [`yES]. Press the
Advance Key ‰ to store 50.000mV input and move to the next prompt.
4. Enter 0.000mV from the millivolt source. Allow at least 10 seconds to stabilize. Set
Thermocouple Calibration, 0mV [tc00] (Calibration 1 Menu) to [`yES]. Press the
Advance Key ‰ to store 0.000mV input and move to the next prompt.
5. Disconnect the millivolt source and connect the reference compensator or thermocouple
calibrator to terminals 6 (-) and 7 (+). With type J thermocouple wire, if using a
compensator, turn it on and short the input wires. When using a type J calibrator, set it
to simulate 32°F/0°C. Allow 10 seconds for the controller to stabilize. Set Thermocouple
Calibration, 32° [tc32] (Calibration 1 Menu) to [`yES]. Press the Advance Key ‰ to
store type J thermocouple calibration and move to the next prompt.
6. Rewire for operation and verify calibration.
RTD Input Procedure
Equipment Required
•1kΩ decade box with 0.01Ω resolution.
Input 1 Setup and Calibration
1. Connect the correct power supply to terminals 8 and 9 (see Series 96 User’s Manual).
2. Short terminals 5, 6 and 7 together with less than 0.1Ω. Set Ground [`gnd]
(Calibration 1 Menu) to [`yES]. Press the Advance Key ‰ to store ground input and
move to the next prompt.
3. Short terminals 5 and 7 together with less than 0.5Ω. Set Lead Resistance Calibration
[LEAd] (Calibration 1 Menu) to [`yES]. Press the Advance Key ‰ to store the lead
resistance and move to the next prompt.
4. Connect the decade box to terminals 5 (S2), 6 (S3) and 7 (S1), with 20- to 24-gauge wire.
5. Enter 15.00Ω from the decade box. Allow at least 10 seconds to stabilize. Set RTD
Calibration, 15Ω [r`15] (Calibration 1 Menu) to [`yES]. Press the Advance Key ‰ to
store the 15.00Ω input and move to the next prompt.
6. Enter 380.00Ω from the decade box. Allow at least 10 seconds to stabilize. Set RTD
Calibration, 380Ω [r380] (Calibration 1 Menu) to [`yES]. Press the Advance Key ‰ to
store the 380.00Ω input and move to the next prompt.
7. Rewire for operation and verify calibration.