DCP200 Profile Controller & Recorder - Product Manual

14 Calibration

WARNING:

CALIBRATION IS ONLY REQUIRED FOR INSTRUMENTS IN WHICH CALIBRATION ERRORS HAVE BEEN ENCOUNTERED. REFER TO CALIBRATION CHECK BELOW.

CAUTION:

Calibration must be performed by personnel who are technically competent and authorised to do so.

Calibration Reminder

Calibration of each input type is carried out during manufacture. This can be verified from Product Information Mode. Recorder versions can provide the user with a calibration reminder if the application requires regular checks – see Input Configuration for details. For most applications, re-calibration is not required during the lifetime of the instrument.

Equipment Required For Checking or Calibrating The Universal Input

A suitable calibration signal source is required for each input type. To verify the accuracy of the instrument or carry out recalibration, the listed input sources are required. These must have better than ±0.05% of the reading accuracy:

1.DC linear inputs: 0 to 50mV, 0 to 10VDC and 0 to 20mADC.

2.Thermocouple inputs - complete with 0ºC reference facility, appropriate thermocouple functions and compensating leads (or equivalent).

3.RTD inputs: decade resistance box with connections for three-wire input (or equivalent).

Calibration Check

1.Set the instrument to the required input type.

2.Power up the instrument and connect the correct input leads.

Leave powered up for at least five minutes for RTD and DC linear inputs, and at least 30 minutes for thermocouple inputs.

3.After the appropriate delay for stabilisation, check the calibration by connecting the appropriate input source and checking a number of cardinal points.

The observed readings should be within the tolerances stated in the Specification (see Appendix 2)

4.Repeat the test for all required input types.

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Calibration

51-52-25-150, Issue 1 – April 2009

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Honeywell DCP200 manual Calibration Reminder, Calibration Check

DCP200 specifications

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