2 span calibration – Yokogawa IR200 User Manual

Page 68

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IM 11G02M01-01E

3. Wait until the indication is stabilized in the

state where the calibration gas is supplied.
After the indication has been stabilized,
press the

ENT

key. Span calibration of

Range selected by the cursor is performed.

6.9.2 Span calibration

It is used to perform a span point adjustment. Supply calibration gas with concentration set to the
span value to perform the span calibration. For the span calibration gas for the NO, SO

2

, CO

2

,

CO, CH

4

masurement, use the standard gas with a concentration of 90% or more of the range

value.
For the calibration gas for the O

2

measurement,

use the standard gas of 1 to 2 vol%.

When Range Interlock from “Calibration
Range” of the Calibration Setting mode is
set, span calibration is performed together
with 2 Ranges.

Caution

To close the " Span Calibration " or cancel
this mode midway, press the key.
A previous screen will return.

To close Span Calibration

ESC

1. Press the

SPAN

key on the Measurement

screen to display the Manual Span Calibra-
tion screen.

2. Press the

or

key to select CH (com-

ponent) to be calibrated. After selection,

press the

ENT

key, and the span calibration

contact output on corresponding to CH is
turned ON. And supply span gas.

To Measurement screen after

executing Manual Span Calibration

ENT

SPAN

(

)

ENT

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