Chapter 1 – Introduction
Thank you for purchasing the extractive COSMOS Gas Detector Model PS-7.
This Gas Detector is designed to detect the leakage of toxic and combustible gases. It is designed to display
the concentration level of detected gases on the main unit and output that information externally as an
analog signal. When a preset warning level of gas is detected, the warning lamp (ALARM lamp) on the main
unit starts to blink, the external contact output is activated, and the amount of leaking gas is monitored.
The sensor unit and sampling unit used in the Gas Detector can be replaced without the use of tools. Regular
replacement of these components eliminates the need to perform calibration on-site. To ensure correct
operation, read this manual carefully before attempting to install or operate the Gas Detector.
1.1 Explanation of Symbols
This manual uses the following symbols. Their meanings must be understood and observed to ensure safe
operation of the unit.
Indicates a potentially hazardous situation that, if not avoided, could result in minor
injury or physical damage.
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