Emerson Process Management IM-106-340 instruction manual Keys, Cal

Instruction Manual

IM-106-340, Rev. 4.0 May 2006

Oxymitter 4000

Figure 5-2. Calibration Keys

Diagnostic

LEDs

Membrane

Keys

HEATER T/C

DIAGNOSTIC HEATER

ALARMS 02 CELL

CALIBRATION

CALIBRATION RECOMMENDED

	02 CELL mV +
TEST	02 CELL mv -
POINTS	HEATER T/C +
	HEATER T/C -

INC	INC			CAL
HIGH	LOW
GAS	GAS
			TEST GAS +
DEC	DEC
			PROCESS -
		% 02

Membrane

Key

Membrane

Keys

22220023

Keys

INC and DEC. The INC and DEC keys are used to set the values of the calibration gases. Attach a multimeter across TP5 and TP6. The calibration and process gases can now be monitored. Pressing the INC or DEC once will cause the output to switch from the process gas to the calibration gas. Pressing INC or DEC a second time will increase or decrease the calibration gas parameter. If the keys have been inactive for one minute, the output reverts to the process gas. When a calibration has been initiated, the value at TP5 and TP6 is the % O2 seen by the cell.

Oxygen levels, as seen on the multimeter, are:

8.0% O2 = 8.0 volts DC

0.4% O2 = 0.4 volts DC

CAL

The CAL key can:

•Initiate a calibration.

•Sequence through calibration.

•Abort the calibration.

NOTE

Refer Section 9: Maintenance and Service, for calibration instructions.

Model 751 Remote Powered Loop LCD Display (Optional)

Refer to Remote Powered Loop LCD manual for calibration and operation.

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