11 Definition of Terms
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11
Definition of Terms
Galvanic cell type
This is a principle of the sensor installed in the detector head.
See "10-2. Detection principle" for details.
vol%
A unit used to express the percentage of a specific substance (or gas) in a volume of
solution.
Atmosphere
An atmosphere with a temperature within the range of -10 to +40°C and a humidity of
95% RH or less at one atmospheric pressure (1013 hPa).
Initial clear
Output from the detector head fluctuates for a while after turning on the power.
This is a function to prevent triggering alarm during that time.
Full scale
Maximum value of the detection range.
Calibration
Adjusts the readings to the calibration gas concentration value by using the calibration
gas.
Zero suppression
A function to cut off the specific drifting that the sensor has.
Alarm delay time
A function which temporarily suspends activation to prevent a false alarm caused by
noise from its outside.
INHIBIT
The gas detection function is temporarily suspended during maintenance etc. of the
detector.
This is also called "point skip", which has the same function.
HART
communication
DC4-20mA signal digitals signalling is superimposed, and is methods that transmit
multiple signals.
Summary of Contents for SD-1DOX-AS
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Page 61: ...10 Product Specifications 10 1 List of specifications 59 Outline Drawings Adapter A NPT1 2...
Page 65: ...10 Product Specifications 10 1 List of specifications 63 Outline Drawings Cable gland G3 4...
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