SGT User’s Manual
Product Overview
SGT is a portable single gas detector designed to detect the presence of oxygen, toxic and
combustible gases in the ambient environment. When activated, SGT continuously monitors
ambient air for the presence of a specific gas and alerts the user to potentially unsafe exposure
with LED, vibrating, and audible alarms in the event that gas concentration exceeds alarm set
points. And the alarm set point, calibration range, and display configuration can be changed via
SENKO-IR Link (Optional).
WARNING
Any unauthorized attempt to repair or modify the product, or any other cause of damage beyond the
range of the intended use, including damage by fire, lightening, or other hazard, voids liability of the
manufacturer.
Activate this product only if sensor, visual, detection, and audible cover are clear from contaminants
such as dirt and debris that could block the area where gas is to be detected.
Do not clean and rub the LCD screen of the products with a dry cloth or hands in hazardous
environment to prevent the static electricity.
Perform cleaning and maintenance of the products in fresh air that is free of hazardous gases
Test the response of a sensor regularly by the gas concentration exceeding alarm set point.
Test LED, audio and vibration manually.
Gas concentration measurements by the sensor can vary based on the environment (temperature,
pressure and humidity). Therefore, calibration of SGT should be performed in the same (or similar)
environment of the device’s actual use.
If the temperature changes sharply during use of the device (e.g., indoors vs outdoors), the value of
the measured gas concentration can suddenly change. Please use the SGT after the gas
concentration value has stabilized.
Severe vibration or shock to the device may cause a sudden reading change. Please use SGT after
the value of gas concentration has stabilized. Excessive shock to SGT can cause the device and/or
sensor to malfunction.
All alarm value is set based on the alarm standard that is required by international standard.
Therefore, alarm values should be changed only under the responsibility and approval of the
administration of the work site where the instrument is used.
Use IR communications in the safety zone which is free of hazardous gases.
Do not attempt to replace the battery and sensor as SGT is designed to be disposable. Changing the
battery and sensor may impair intrinsic safety and the attempt will void warranty.
CAUTION
Before operating this device, please read the manual carefully.
This device is not a measurement device, but a gas detector.
If calibration and self-test fails continuously, please do not use the device.
For the O2 detector, perform calibration every 30 days in the fresh air environment.
Before use, please check the activation date, and if the activation date is past, please do not use the
device.
Clean detectors with a soft cloth and do not use chemical substances for cleaning.
To maintain 24 months life time, avoid the below activities except the necessary cases to check
events(Max/Min), lifetime/concentration, and alarm set points. Otherwise, the frequent use of the
button will deplete the battery lifetime less than 24 months.
1. Push the button frequently without valid reasons.
2. Frequent alarm operation or alarms are remained for a long time. *Normal Alarm Use: 1 time
and 2 minutes per day.
3. Connect with the SGT IR Link frequently except the bump testing.
View a serial number on the label at the back side of the device. (ex, 20170101)
1. The serial number indicates below.
ex) SG 01 01 001 2017(Year) 01(Months) 01(Day) 001(Manufacture Order)
