Startup And Operation Of Oxymitter 4000 With Membrane Keypad; Power Up; General Operation; Figure 5-1. Startup And Normal Operation - Emerson Oxymitter 4000 Instruction Manual

Oxymitter 4000
OF OXYMITTER 4000 WITH MEMBRANE KEYPAD
5-1

POWER UP

a. Startup Display
When power is applied to the probe, the cell
heater turns on. It takes approximately one
half hour for the cell to heat to operating
temperature. This condition is indicated by
the top four LEDs (DIAGNOSTIC ALARMS)
on the membrane keypad (Figure 5-1).
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.
DIAGNOSTIC
ALARMS
CALIBRATION RECOMMENDED
TEST
POINTS
INC INC
HIGH LOW
GAS GAS
DEC DEC
Rosemount Analytical Inc. A Division of Emerson Process Management
SECTION 5
STARTUP AND OPERATION
HEATER T/C
HEATER
SW2
O2 CELL
CALIBRATION
J1
O2 CELL mV +
TP1
O2 CELL mv -
TP2
HEATER T/C +
TP3
HEATER T/C -
TP4
CAL
TEST GAS + TP5
PROCESS -
TP6
% O2

Figure 5-1. Startup and Normal Operation

c. Error
If there is an error condition at startup, one
of the diagnostics LEDs will be blinking.
Refer Section 7, TROUBLESHOOTING, to
determine the cause of the error. Clear the
error, cycle power, and the operating dis-
play 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 5-2).
5-2

GENERAL OPERATION

a. Overview
Ensure the Oxymitter 4000 is at normal op-
eration. The diagnostic LEDs will display the
operating cycle. All other LEDs should be
off.
HEATER T/C
HEATER
O CELL
2
CALIBRATION
1 2
LIGHTING SEQUENCE DURING WARM-UP
HEATER T/C
HEATER
O CELL
2
CALIBRATION
1 2
LIGHTING SEQUENCE DURING NORMAL OPERATION
(OPERATING DISPLAY)
Instruction Manual
IB-106-340 Rev. 3.0
December 2003
3 4 1 2 3
(STARTUP DISPLAY)
3 4 1 2 3
Startup and Operation with Keypad
4
4
22220056
5-1