Teledyne M300EM operation manual ∙Leaks ∙Correct flow

Teledyne API – Technical Manual - Model 300E Family CO Analyzers EPA Calibration Protocol

SAMPLE	A1:CONC1=50 PPM	CO = XXXX
< TST TST > CAL		SETUP
SAMPLE	CO STB=XXXX PPB	CO=XXXX
< TST TST > CAL		SETUP

ACTION:

Allow calibration gas diluted to proper concentration for

Midpoint N to enter the sample port

Set the Display to show the

COSTB test function.

This function calculates the

stability of the CO

measurement.

Wait until

STABIL falls

below 0.2 PPM

(for M300E). This may take several minutes.

SAMPLE	COSTB=XXXX PPB	CO=XXXX
< TST TST > CAL CALZ CALS		SETUP
			Record the CO
			reading as
SPAN CAL M	A1:CONC1=50 PPM	CO = XXXX	displayed on the
< TST TST > ZERO SPAN CONC		EXIT	instrument’s front
			panel.

Press EXIT to

Return to the

Main SAMPLE

Display.

ACTION:

Allow Calibration Gas diluted to

proper concentration for

Midpoint N+1 to enter the sample

port.

Plot the analyzer responses versus the corresponding calculated concentrations to obtain a calibration relationship. Determine the best-fit straight line (y = mx + b) determined by the method of least squares.

After the best-fit line has been drawn, determine whether the analyzer response is linear. To be considered linear, no calibration point should differ from the best-fit line by more than ±2% of full scale.

If carried out carefully, the checks described in this section will provide reasonable confidence that the M300E is operating properly. Checks should be carried out at least every 3 months as the possibility of malfunction is always present.

If the linearity error is excessive and cannot be attributed to outside causes, check the M300E system for:

∙Sample pressure higher than ambient – pressurized sample gas

∙Leaks

∙Correct flow

∙Miscalibrated span gas tanks or bad zero gas

∙Miscalibrated sample pressure transducer

∙Failed IR detector, GFC Wheel or Sync/Demod Board

∙Contaminated optical bench or sample lines

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