Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

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

1.To access TP5 and TP6 next to the LOI (Figure 4-2), power down the Oxymitter 4000 and remove the LOI module. Attach alligator leads from a multimeter across TP5 and TP6. Install the LOI module and power up the Oxymitter 4000. Allow time for the cell to reach operating temperature. The calibration and process gases can now

be monitored. 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 VDC

0.4% O2 = 0.4 VDC

2.HART/AMS.

3.Model 751. The loop-driven LCD display.

4-20 mA

IS INTERNALLY

POWERED (DEFAULT)

4-20 mA REQUIRES EXTERNAL POWER

HART: O2 RANGE SET BY HART/AMS (FROM 0 TO 40% O2)

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, CURRENT OUTPUT GOES TO THIS VALUE

 

OFF

 

 

ON

 

 

 

 

 

 

 

 

 

LOCAL

HART

 

 

 

 

 

 

 

 

 

 

0 TO 25% O2

0 TO 10% O2

 

 

 

 

3.5 mA

 

 

 

 

21.6 mA

 

 

 

 

220 V

 

 

 

 

115 V

 

 

 

 

 

 

 

 

 

 

 

DEFAULT

POSITION

(EX-FACTORY)

SW2

1

2

3

4

TP1

J1

 

TP2

 

TP3

 

TP4

RED YEL GRN ORG

 

NOTE:

THE 115 V OPTION AT SWITCH SW2 POSITION 4 IS ACTIVE ONLY WHEN THE HEATER VOLTAGE OPTION IS SET TO MANUAL IN THE SOFTWARE.

TP5

TP6

37260012

Figure 4-2. Defaults – Oxymitter 4000 with LOI

Rosemount Analytical Inc. A Division of Emerson Process Management

Configuration with LOI 4-3