Honeywell DR4300 manual Selecting Factory or Field Calibration Values Introduction, Present value

DR4300 Circular Chart Recorder

4.5.2.5 Selecting Factory or Field Calibration Values

Introduction

Recorders are calibrated at the factory. The calibration values for each pen channel are stored on the printed circuit assembly associated with the pen. In addition, provision is made for the storage of field calibration values. The procedure for calibrating an input is provided in Section 5 – Input and Output Calibration for Recorder with Display. Entering field calibration values does not affect the stored factory calibration.

The “LD CAL” parameter in the input set up group for each pen channel permits you to specify whether factory or field calibration values are to be used by the recorder.

Procedure

Follow the procedure in Table 4-32to select factory or field calibration values.

ATTENTION

If you change the type of input used by the recorder, you must change the setting of the “IN TYP” parameter in the input set up group (see Subsection 4.3.7). Changing the input type also requires changing the settings of hardware switches at SW6 (see Subsection 4.3.5.2).

Table 4-32 Procedure for Selecting Factory or Field Calibration Values

Step	Press				Action
1		Select the desired input (indicator INP 1 or INP 2).
	FUNC
2		Until you see:
	SET
			Upper Display
	UP
			SET
			Lower Display
			INPUT
3		Until you see:
	FUNC
			Upper
				Present value
			Lower	(FAC or FLD)
			LD CAL
4		Select FAC (factory) or FLD (field).
	or
			ATTENTION	Until field calibration has been done,
		FLD uses the same calibration values as FAC. When field calibration is
		performed, the value of LD CAL is automatically set to FLD at the completion
		of the field calibration operation.
5		Be sure the correct sensor is connected to the input terminals and resume
		normal operation.

136 DR4300 Circular Chart Recorder Product Manual 12/03