Emerson Process Management IM-106-340 Operation, Overview, Calibration Recommended LED, Cal Led

Oxymitter 4000

Instruction Manual

IM-106-340, Rev. 4.0 May 2006

	Error
	If there is an error condition at startup, one of the diagnostics LEDs will be
	blinking. Refer to Section 8: Troubleshooting, to determine the cause of the
	error. Clear the error, cycle power, and the operating display should return.
	Keypad
	The five membrane keys on the membrane keypad are only used during
	calibration to adjust the high and low gas and to initiate the calibration
	sequence (Figure 5-2).
	Reference Air
	Ensure reference air, if used, is set to 0.25 l/min (0.5 scfh)
OPERATION
Overview	Ensure the Oxymitter 4000 is at normal operation. The diagnostic LEDs will
	display the operating cycle. All other LEDs should be off (Figure 5-1).
	DIAGNOSTIC ALARM LEDs
	If there is an error in the system, one of these LEDs will flash various blink
	codes (Section 8: Troubleshooting). In the case of multiple errors, only one
	will be displayed based on a priority system. Correct the problem and cycle
	power. The operating display will return or the next error will be displayed. The
	alarms are:
	HEATER T/C
	HEATER
	O2 CELL
	CALIBRATION
	CALIBRATION RECOMMENDED LED
	Turns on when the system determines that a calibration is recommended.
	Further information is available in Section 9: Maintenance and Service.
	TEST POINTS
	Test points 1 through 6 will allow you to monitor with a multimeter: the heater
	thermocouple, O2 cell millivolt, and the process O2.
	1. TP1 and TP2 monitor the oxygen cell millivolt output which equates to
	the percentage of oxygen present.
	2. TP3 and TP4 monitor the heater thermocouple.
	3. TP5 and TP6 monitor the process gas or the calibration gas parameter.
	CAL LED
	The CAL LED is on steady or flashing during calibration. Further information
	is available in Section 9: Maintenance and Service.

5-2