Honeywell DCP552 Mark II User Manual

This chapter covers the field calibrations procedures for the inputs, outputs and various functions of the 

mark II controller after shipment from the factory.  When calibration is made in the field, the original factory data

is erased, and so the specified input/output accuracies of the controller cannot be assured.  This manual is for users

who are conversant with 

mark II use and operation.

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Apply power and allow the controller to warm up for 2 hours before you calibrate

the 

mark II.  Confirm that the test equipment needed for calibration has

stabilized.

Factory calibration has been made at a stable temperature of 23.0

°C (±2°C).

Calibrate the 

mark II in this range, and where there are no significant

fluctuations in air temperature.

You must write newly calibrated data to EEPROM before exiting from calibration

mode, otherwise all new data will be lost.

If calibration equipment of a lower grade than specified below is used, calibration

results may be unsatisfactory.

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(1) Standard input source with ±0.02% accuracy (having more than 5 effective

digits and capable of generating both voltage and current outputs)

(2) Decade resistance box with ±0.02% accuracy (having a range of 10 to 300W

with a resolution of more than 0.01W)

(3) Digital ammeter with ±0.02% accuracy (measurable in the range of 4 to 20mA

with assured resolution of more than 0.01mA)

(4) Thermometer with ±0.1

°C accuracy (resolution of more than 0.1°C)