Model 3081FG

Instruction Manual

IB-106-3081 Rev. 1.5

September 2002

1

1-3 SPECIFICATIONS

Net O2 Range

0 to 25% O2

Fully Field Selectable via the HART Interface

 

Lowest Limit

0.05% O2

Highest Limit

25.00% O2

Accuracy

±1.5% of reading or 0.05% O2, whichever is greater

System Response to Calibration Check Gas

Initial response in less than 3 seconds

PROBE

T90 in less than 10 seconds

 

Lengths

20 in. (508 mm)

 

26 in. (660 mm)

Temperature Limits

34.625 in. (880 mm)

 

Process Temperature Limits

550° to 1400°C (1022° to 2552°F)

 

Operation to 1600°C (2912°F) with reduced cell life.

Ambient

-40° to 149°C (-40° to 300°F) Ambient

Mounting and Mounting Position

Vertical or Horizontal

Materials of Construction

 

Process Wetted Parts

 

Inner Probe

Zirconia

Outer Protection Tube

Alumina [1600°C (2912°F) limit]

 

Inconel 600 [1000°C (1832°F) limit]

Probe Junction Box

Cast aluminum

Speed of Installation/Withdrawal

1 in. (25.4 mm) per minute

Hazardous Area Certification

Intrinsically safe per EN50 014 (1977), clause 1.3(1)

Reference Air Requirement

100 ml per minute (0.2 scfh) of clean, dry instrument

 

air; 1/4 in. tube fittings

Calibration Check Gas Fittings

1/4 in. tube fittings

Cabling

Two twisted pairs, shielded

(1)Thermocouple and O2 probe cell are both unpowered, developing a millivolt emf, and are considered a “simple apparatus” by certifying agencies.

Rosemount Analytical Inc. A Division of Emerson Process Management

Description and Specifications 1-7

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Emerson 3081FG instruction manual Specifications, Probe