Watlow Electric SERIES 980/985 Benutzerhandbuch

Appendix

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    Single set point, non-ramping.

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Single input, dual outputs.

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Control outputs: User selectable as: Heat, Heat/Heat, Heat/Cool, Cool,
Cool/Cool, Heat/Alarm, Cool/Alarm 

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Outputs independent, or related via  deadband for Heat/Cool.

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ON/OFF: 3°F or 1 .7°C switching hysteresis or 0.3°F or 0.l7°C for
0.10 Units 

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PID parameters:

Proportional band: 0 to 999°F/0 to 555°C(3 digit only)

0 to 999°F/0 to 555°C or 0 to 99.9°F/0 to 55.5°C (3 or 4 digit)

Reset: 0.00 to 9.99 repeats per minute.
Rate: 0.00 to 9.99 minutes.

Cycle time: 1 to 60 seconds.

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Deadband: ±99°F, ±99 units or ±55°C

±9.9°F, ±9.9 units or ±5.5°C for 0.1 decimal units)

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Membrane front panel.

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Three or four digit 0.3”  (8mm) LED diiplays.

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MODE, AUTO/MANUAL, UP, and DOWN keys.

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Dual digital displays.

Thermocouple, RTD, and electrical process input.
Automatic cold junction compensation for thermocouple.

RTD input 2 or 3 wire, platinum, 100 ohm  @ 0°C user selectable, calibrate

to JIS curve #3916 (0.003916(0.003916ohm/ohm/°C or DIN curve #3850(0.003850ohm/ohm°C 

 

Sensor break protection de-energizes control output to protect system or

selectable bumpless transfer to manual operation.

Grounded or ungrounded sensors.
°F/°C or process variable units are user selectable.
Operating ranges user selectable.

J t/c:

32 to 999°F or

0 to 750°C (3 Digit)

32 to 1382°F or 0 to 750°C (4 Digit)

K t/c: - 3 2 8   t o   2282°F or -200 to 1250°C

T t/c:

-328 to 662°F or -200 to 350°C

N t/c:

32 to 2282°F or

0   t o   1250°C

PT 2  (Platinel2) 32 to 2543°F or

0   t o   1395°C

1° RTD:

-328 to 1112°F or -200 to 600°C

0.1° RTD:

-99.9 to  392.0°F or -99.9 to  200.0°C

0-5VDC:

-500 to 3500 units

4-20mA:

-500 to 3500 units

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