Teledyne 300M Performance Testing, Manual Zero/Span Check, Zero Check, span gas into the analyzer

Models: 300M

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3 PERFORMANCE TESTING

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

3 PERFORMANCE TESTING

Zero/span checking and calibration of the Teledyne API CO Analyzer is divided into two sections. Chapter 3 discusses the different methods by which the analyzer's zero and span settings may be checked and adjusted. The emphasis in Chapter 3 is on the operation of the buttons and the internal adjustments they make in the instrument.

3.1 Manual Zero/Span Check

NOTE

Zero or span checks can be performed in any order.

NOTE

Span gas concentration may trigger gas alarms unless the analyzer is

in the calibration mode. Press CAL button prior to introducing

span gas into the analyzer.

Operators can manually check the zero and span set-points of the analyzer while in sample mode by allowing the instrument to sample calibration gas and pressing the CAL button. This is also referred to as a multi-point calibration.

3.1.1 Zero Check

Allow the analyzer to sample zero air through the sample port. Press CAL button. After a few minutes the CO reading should go to zero. If it doesn't, the operator may press the ZERO button followed by ENTR. This will force the CO reading to go to zero and modify the internal formulas used to compute the CO reading. If the ZERO button is not displayed, this means that the zero reading is too far out of adjustment to do a reliable calibration. The reason for this must be determined before the analyzer can be calibrated. See Section 10.5 for troubleshooting calibration problems. Pressing EXIT will bring you back to the sample menu or leave the instrument in CAL mode if you are also going to make a span check.

3-1

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Teledyne 300M instruction manual Performance Testing, Manual Zero/Span Check, Zero Check, span gas into the analyzer