6 Operations and Functions
6-4. Other functions
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SD-1DGH-AS
CAUTION
A reading under zero is suppressed with the 10% FS suppression.
A reading that is 10% FS or more under zero is displayed as "-0.0", which prevents an accurate gas
detection and needs the zero adjustment and span adjustment.
6-4. Other functions
<Suppression Function>
The sensors used with the detector are influenced by environmental changes (temperature, humidity, and
other characteristics) or interference gases (interference characteristics) in no small measure, which affects
the reading. Therefore, the reading might be fluctuated around zero even in a normal environment.
This function obscures influences by environmental changes and interference gases around zero that have
no meaning for your management rules of gas alarm. This function is used to hide (suppress) the fluctuation
of the reading under the setting value, indicating zero.
NOTE
The suppression function is factory-set. The standard setting value is 10% FS.
In the maintenance mode, this function is disabled and the fluctuation of the reading under the setting
value is displayed.
<<Example>>
Suppression Disabled
A fluctuation around zero is displayed as the reading.
Suppression Enabled
A fluctuation under the setting value is hidden with zero.
(Zero suppression)
Summary of Contents for PT2-169
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Page 62: ...10 Product Specifications 10 1 List of specifications SD 1DGH AS 62 Outline Drawings...
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