Emerson B-106-300NH instruction manual Fully Automatic Calibration

Instruction Manual

IB-106-300NH Rev. 4.2 July 2002

World Class 3000

				REFERENCE AIR
CALIBRATE
				CONNECTION
IN PLACE
CONNECTION			CHECK		CALIBRATION
			VALVE		GAS HOSE
					CONNECTS
					TO CHECK
					VALVE
			PUSHBUTTON
			REGULATOR
		WITH CONTENTS		0.4	8.0
		GAGE - SET 5 SCFH
				%	%
				O2	O2
NOTE: PROBE CALIBRATION GAS
	FITTING HAS A SEAL CAP
	WHICH MUST BE IN PLACE
	EXCEPT DURING CALIBRATION.				27270005

Figure 4-3. Typical Portable Calibration Setup

d.Manual (Semiautomatic) Calibration Procedure

The following procedure relates to an op- erator initiated calibration selected at the IFT by pressing the CAL key. The calibra- tion is manually performed by the operator upon data queues from the IFT. Any system without an MPS 3000 Multiprobe Calibration Gas Sequencer must follow these steps.

1.Press SETUP to display the SETUP menu. Select PROBE CALIBRATION sub-menu. Ensure that Auto Cal is dis- abled. Set the cursor on Auto Cal. Press ENTER. Set Auto Cal to NO if not already done.

2.Press the CAL key. Select PERFORM CALIBRATION sub-menu. "Press EN- TER to start Manual Calibration" will appear on the LCD display. Press

ENTER to start. Follow the data queues. Refer to Table 5-4,CALI- BRATE O2 Sub-menu.

e.Fully Automatic Calibration

1.Calibration Gases For Fully Automatic Calibration. For fully automatic calibra- tion, an MPS 3000 Multiprobe Calibra- tion Gas Sequencer is required as well as the two types of calibration gas.

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.

Two tanks of precision calibration gas mixtures. Recommended calibration gases are nominally 0.4% and 8.0% oxygen in nitrogen set calibration gas pressure at 20 psi (138 kPa).

A typical automatic calibration system is shown in Figure 4-4.

4-6 Calibration Rosemount Analytical Inc. A Division of Emerson Process Management