Instruction Manual

IB-106-300NH Rev. 4.3 May 2005

World Class 3000

PROBE (END VIEW)

CALIBRATION

IN-PLACE

FITTING

CHECK

VALVE

FLOW METER

NOTE: PROBE CALIBRATION GAS FITTING HAS A SEAL CAP WHICH MUST BE IN PLACE AT ALL TIMES EXCEPT DURING CALIBRATION.

REFERENCE AIR

CONNECTION

2 SCFH

 

REFERENCE

 

AIR SET

 

INSTR.

LEAK TIGHT

AIR

IN

VALVES

 

0.4% O2

8.0% O2

37840014

 

 

Figure 4-1. Typical Calibration Setup

NOTE

Only set the calibration gas flowmeter upon initial installation and after changing the diffusion element. A slightly lower calibration gas flow rate may indicate a plugged diffusion element.

2Set the calibration gas pres- sure regulators and the flow meter for a flow of 5 SCFH at 20 psi (138 kPa) for both gases. The reference air should be flowing as in normal operation.

3Refer to paragraph 4-2d of this section for Manual (Semi- automatic) Calibration setup and procedure using the IFT.

4Calibration gases will be switched on and off using the shutoff valves.

Test Method "B" Oxygen Calibration Gas and Service Kit.

(a) Required Equipment

Do not use 100% nitrogen as a zero gas. It is suggested that gas for the zero be between 0.4% and 2.0% O2. Do not use gases with hydrocarbon con- centrations of more than 40 parts per million. Failure to use proper gases will result in erroneous readings.

NOTE

Ambient air is not recommended for use as high calibration gas. An 8% O2 balance in nitrogen is recommended for high calibration gas.

1Portable Oxygen Calibration Gas Kits (Figure 4-2), Rose- mount Analytical P/N 6296A27G01, containing 8% and 0.4% gases in a portable carrying case with regulator, built-in valve, hose and con- necting adapter to the calibra- tion gas connection.

4-4 Calibration

Rosemount Analytical Inc. A Division of Emerson Process Management

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Emerson 3000 instruction manual O

3000 specifications

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