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Watlow Controls 981 Series Calibration Manual

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Calibrating Watlow
Process Controls
(Applies to Series 981, 982, 983, 984, 986, 987, 988, 989)
Calibration Manual
Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507
W988-CM10-9345
$5.00
November, 1993
Made in the U.S.A.
Printed on Recycled Paper

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Summary of Contents for Watlow Controls 981 Series

  • Page 1 Calibrating Watlow Process Controls (Applies to Series 981, 982, 983, 984, 986, 987, 988, 989) Calibration Manual Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507 W988-CM10-9345 $5.00 November, 1993 Made in the U.S.A.

  • Page 2: Table Of Contents

    Contents Page Description Calibrating Your Watlow Process Control The Factory (Fcty) Menus Entering the Fcty Prompt Diagnostics Menu Calibration Menu Calibration Restore Prompt The dFL Prompt Input Calibration Output Calibration Calibration Procedures Low Gain Thermocouple Input High Gain Thermocouple Input RTD Input mA Process Input VDC Process Input...

  • Page 3: Calibrating Your Watlow Process Control

    Menus/Prompts Calibrating Your Watlow Process Control This manual is a supplement to the Series 981/982 and 988/989 User’s Manual. The calibration procedures within this manual pertain to the following controls: Series 981 Series 986 Series 982 Series 987 Series 983 Series 988 Series 984 Series 989...

  • Page 4: Diagnostics Menu

    Diagnostics Diagnostics Menu The Diagnostics menu (diAg) contains specific information for each control. This menu is for factory use only, but can be accessed for viewing or technical assis- tance. • At the Fcty prompt, press the Up or Down key to advance the upper display to the diAg prompt.
  • Page 5 When contacting the factory for technical assistance, make sure you have the informa- Diagnostics tion documented from the following prompts. All prompts in this menu are read only. Date: This prompt represents the date the final control test was performed. The first DAtE two numbers are the week (01 through 52), and the last two numbers are the year.

  • Page 6: Calibration Menu

    CAL Menu Calibration Menu Enter the Factory menu again by pressing the Up and Down keys simultaneously for three seconds to enter the Setup menu, and an additional three seconds to enter the Factory menu. • At the Fcty prompt, press the Up or Down key to advance to the upper display to the CAL prompt.

  • Page 7: Calibration Restore Prompt

    rSt/dFL Prompts Calibration Restore Prompt If you make a mistake while calibrating your control, the rSt prompt near the end of the calibration menu restores the original factory calibration settings. At the rSt prompt, simply press the Up or Down key to change the upper display to read YES; press the Mode key.

  • Page 8: Low Gain Thermocouple Input

    Low Gain T/C Low Gain Thermocouple Input Procedure For all thermocouple inputs excluding Type R, S and B 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 minimum range, 0.01mV resolution Setup and Calibration 1.

  • Page 9: High Gain Thermocouple Input

    High Gain T/C High Gain Thermocouple Input Procedure Type R, S and B only 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 minimum range, 0.01mV resolution Setup and Calibration 1.

  • Page 10: Rtd Input

    RTD Input Procedure Equipment Required • 1K precision decade box with 0.01 resolution Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988. See Chapter 2 in the user's manual. 2.

  • Page 11: Ma Process Input

    mA Process Input mA Process Input Procedure 0 to 20mA and 4 to 20mA units Equipment Required • Precision current source, 0-20mA range with 0.01mA resolution Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988.

  • Page 12: Vdc Process Input

    VDC Process Input VDC Process Input Procedure 0 to 5VDC and 0 to 10VDC units Equipment Required • Precision Voltage source 0-10 volt minimum range with .001 volt resolution. Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988.

  • Page 13: Mvdc Process Input

    mVDC Process Input mVDC Process Input Procedure 0 to 50mVDC and 0 to 100mVDC units Equipment Required • Precision millivolt source, 0-100mV minimum range with 0.001mV resolution Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988.

  • Page 14: Slidewire Feedback Input

    Slidewire/Current Slidewire Feedback Input Procedure Equipment Required • 1K precision decade box with 0.01 resolution Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988. See Chapter 2 in the user's manual. 2.

  • Page 15: Ma Process Output 1 And

    mA Process Output mA Process Output 1 & 2 Procedure Equipment Required • 4 1/2 digit digital multimeter Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988. See Chapter 2 in the user's manual. 2.

  • Page 16: Vdc Process Output 1 And

    VDC Process Output VDC Process Output 1 & 2 Calibration Equipment Required • 4 1/2 digit Digital Multimeter Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988. See Chapter 2 in the user's manual. 2.

  • Page 17: Ma Retransmit Output

    Retransmit mA Retransmit Output 3 Procedure Equipment Required • 4 1/2 digit Digital Multimeter Setup and Calibration 1. Connect the AC voltage L1, L2 and ground to the proper terminals on the Series 988. See Chapter 2 in the user’s manual. 2.
  • Page 18 WATLOW Series 988 Calibration Manual...
  • Page 19 Watlow Process Controls Calibration Manual Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507...

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