Ecotech A Series User Manual

CHAPTER 3, CALIBRATION
98307600 Rev. C-1 3-3
3. From the primary screen start the zero calibration sequence by pressing either
the Up or Down arrow ( or ) until the display prompts START MANUAL
CALIBRATION? ZERO. Confirm that the display reads ZERO and press <Enter>
(↵). A backlit cursor will be displayed on the CO Concentration display.
4. Use the <Select> key to move the position of the backlit cursor, and the Up
and Down arrow keys to increment and decrement the value of the backlit
digit until the zero gas concentration value is displayed (e.g. 0.00 PPM).
When the desired concentration is displayed, press <Enter>. Press <Exit> to
return to the primary screen.
3.2 Multipoint Calibration Procedure
Before beginning a multipoint calibration of the instrument, a qualified service
technician must perform the periodic maintenance procedures in the EC9830
Service Manual, especially checking the particulate filter. The INSTRUMENT
STATUS and SYSTEM TEMPERATURE screens in the EC9830 Service Manual give
the ranges for correct operation of the instrument.
Note
Calibration should only be performed when the
instrument is stable and has been powered up for at
least three hours.
3.2.1 Procedure Using Cylinder Gas Dilution Method
3.2.1.1 Principle
A certified standard cylinder of CO, diluted as necessary with zero air, is used to
obtain the various calibration concentrations needed.
3.2.1.2 Apparatus
The major components and typical configurations of the calibration systems for
the two calibration methods are shown in Figure 3-1 and Figure 3-2 below.

Ecotech A Series Specifications

General

Brand	Ecotech
Model	A Series
Category	Measuring Instruments
Language	English