Emerson Process Management IM-106-340 instruction manual Read O2 Concentration, Off

Oxymitter 4000

Instruction Manual

IM-106-340, Rev. 4.0 May 2006

Figure 3-2. Defaults - Oxymitter 4000 with Membrane Keypad

4-20 mA is internally

HART: O2 Range set by HART/AMS (From 0 to 40% O2)

OFF ON

powered (Default)

4-20 mA requires

external power

Local: O2 Range set by Pos 2

0 to 10% O2 /

0 to 25% O2: O2 Range

3.5mA/21.6 mA: When alarm exists, or on power- up, output current goes to this value

HART 0 to 10% O2

3.5 mA

220 V

Default position (Ex-factory)

Local

0 to 25% O2

21.6mA

115 V

HEATER T/C

DIAGNOSTIC HEATER

ALARMS O2 CELL CALIBRATION

CALIBRATION RECOMMENDED

SW2

ON 1

2

3

4

Note:

The 115 V option at switch SW2 position 4 is active only when the heater voltage option is set to manual in the

TEST

POINTS

INC INC

HIGH LOW GAS GAS

DEC DEC

O2 CELL mV +

O2 CELL mV - HEATER T/C + HEATER T/C -

CAL

TEST GAS + PROCESS - % O2

TP1	J1
TP2
TP3
TP4	RED YEL GRN ORG

TP5

TP6

software

(auto tune = no).

37260010

Read O2 Concentration

Once the cell is up to operating temperature, the O2 percentage can be read:

1.Access TP5 and TP6 next to the membrane keypad. 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. If the keys have been inactive for one minute, the output reverts to the process gas.

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