Honeywell DR4500A - Calibration Procedure

Input Calibration - Calibration Procedure
Release M DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual 191
April 2017
7.6 Calibration Procedure
Introduction
Apply power and allow the recorder to warm up for one hour before you calibrate.
 Please read “Set Up Wiring” before beginning the procedure.
 Make sure “LOCKOUT” is set to “NONE” (see Section 3 – Configuration).
 The calibration procedure for inputs #1 and #2 are identical. The displays indicate the input number.
CAUTION
For milliampere inputs, be sure the current source is at zero before switching on the calibrator.
Do not switch the calibrator on/off while it is connected to the recorder’s input.
ATTENTION
For linear inputs, avoid step changes in input signal. Vary calibration source signal smoothly
from initial value to final 100% value.
Calibration procedure sequence
The calibration procedure sequence for all inputs is listed in Table 7-13.
Table 7-13 Calibration procedure sequence
Step
Operation
Press
Action/Result
1
Enter Calibration Mode
SET
UP
Until you see:
Upper Display: CALIB
Lower Display: INPUT n n = 1 or 2
FUNC
You will see:
Upper Display: DISABL
Lower Display: CAL INn n = 1 or 2
▲
The calibration sequence is enabled and you will see:
Upper Display: BEGIN
Lower Display: CAL INn
2
Calibrate 0%
FUNC
You will see:
Upper Display: APPLY
Lower Display: INn ZERO n = 1 or 2
 Adjust your calibration device to an output signal
equal to the 0% range value for your particular input
sensor, see Table 7-2 for Voltage or Resistance
equivalents.
 Wait 30 seconds, then go to step 3.