Watlow Series 935A Manual de usuario descargar pdf (Pagina 37)

Watlow Series 935A User’s Manual 35

Thermocouple and Remote Set Point Input Field Calibration Procedure

Equipment Required:

• Type “J” Reference Compensator with reference junction at 32°F/0°C, or Type “J” Thermocouple Calibrator set at 32°F/0°C.

• Precision millivolt source, 0-50mV min. range, 0.01mV resolution.

Set Up:

1. Connect 100-240Å (ac), or 24-28V‡ (ac/dc) to Terminal 7 and Terminal 8.

2. Connect the millivolt source to Terminal 1 negative and Terminal 2 positive.

3. Connect voltage source to Terminal 3 negative and Terminal 4 positive.

4. Apply power to the unit and allow it to warm up for 15 minutes.

Move to the Calibration Menu:

1. Press . and , simultaneously for 3 seconds.

2. Press . or , until [CnFG] is displayed.

Press and hold ß – press . or , to select [`YES], then release ß.

3. Press . or , until [`TAG] is displayed.

Press and hold ß. Press . or ,8 times (display shall be blank).

Calibration: (Thermocouple)

1. Press and hold ß, ., and , simultaneously for 3 seconds until [TR50] is displayed.

2. Set the mV source to 50.00mVÎ (dc). Set the voltage source to 5.00VÎ (dc). Allow 10 seconds for sources to stabilize. Press and

hold ß. Press . or , until [`YES] appears. Release ß.

3. Press , - [Tc00] shall be displayed.

4. Set the mV source to 0.00 mVÎ (dc), set voltage source to 0.00VÎ (dc). Allow 10 seconds for sources to stabilize. Press and hold

ß. Press . or , until [`YES] appears. Release ß.

5. Press ,. [``Tc] shall be displayed.

6. Set the MV source to 0.00 mV (if using a temperature compensator). Set calibrator to 32°F/0°C.

Set voltage source to 0.00V. Allow 10 seconds for sources to stabilize.

Press and hold ß. Press . or , until [`YES] is displayed. Release ß.

Calibration: (RTD)

Equipment Required:

• Precision Resistance Box with 0.01Ω Resolution.

1. Remove thermocouple wires from Terminal 1 and Terminal 2.

2. Connect S2 to terminal 1. Connect S1 to Terminal 2.

3. Press ,. [R`15] shall be displayed.

4. Connect voltage source to Terminal 3 negative and Terminal 4 positive.

5. Set the Decade box to 15.00Ω, set the voltage source to 0.00V (Allow 10 seconds for sources to stabilize). Press and hold ß.

Press . or , until [`YES] appears. Release ß.

6. Press , - [R380] shall be displayed.

7. Set the decade box to 380.00Ω, set the voltage source to 5.00V. (Allow 10 seconds for sources to stabilize). Press and hold ß.

Press . or , until [`YES] appears. Release ß.

8. Press and hold . and , for 3 seconds to Exit calibration menu.

Calibrating the 935A and Remote Set Point Input

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 67 68

Sin comentarios

Watlow Series 935A Manual de usuario Pagina 37