Emerson Process Management IB106-340 Power UP, Start UP Oxymitter 4000 Calibration

Instruction Manual

IB-106-340 Rev. 2.4 April, 2001

Oxymitter 4000

3.CALIBRATION FAILED. One contact per probe from an SPS 4000 or IMPS 4000 to the control room for notification that the calibration procedure failed. Grouped with this alarm is an output from a pressure switch which indicates when the calibration gas bottles are empty.

4.4-20 mA SIGNAL DURING CALI- BRATION. The 4-20 mA signal can be configured to respond normally during any calibration, or can be configured to hold the last O2 value upon the initiation of calibration. Factory default is for the 4-20 mA signal to operate normally throughout calibration. Holding the last O2 value may be useful if several probes are being averaged for the pur- pose of automatic control. Unless sev- eral probes are being averaged, always place any control loops using the O2 signal into manual prior to calibrating.

3-4 POWER UP

a. Startup Display

When power is applied to the probe, the cell

heater turns on. It takes approximately one

c.Error

If there is an error condition at startup, one of the diagnostics LEDs will be blinking. Refer to Section 7, TROUBLESHOOTING, to determine the cause of the error. Clear the error, cycle power, and the operating display should return.

d.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 3-4).

3-5 START UP OXYMITTER 4000 CALIBRATION

Refer to Section 6, MAINTENANCE AND SERVICE, for calibration instructions.

3-6 IMPS 4000 CONNECTIONS

See the IMPS 4000 Intelligent Multiprobe Test Gas Sequencer Instruction Bulletin for wiring and pneumatic connections.

DIAGNOSTIC

LEDS

MEMBRANE

half hour for the cell to heat to operating

KEYS

HEATER T/C

temperature. This condition is indicated by

the top four LEDs (DIAGNOSTIC ALARMS)

on the membrane keypad (Figure 3-3).

Starting with the CALIBRATION LED, the

LEDs light in ascending order until all four

LEDs are on. At this point, all four turn off

and the cycle starts again. This ramp cycle

continues until the cell is up to operating

temperature.

b. Operating Display

The ramp cycle turns into a cycle where the

diagnostic LEDs light in sequence from the

top to the bottom, one at a time. After the

bottom LED turns on, the sequence starts

again at the top with the HEATER T/C LED

(Figure 3-3).

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

Figure 3-4. Calibration Keys

3-6 Startup Rosemount Analytical Inc. A Division of Emerson Process Management