Description
Overview
GAOTek Gas Detector with Electrochemical CO (Wide Data Function) is designed to detect the concentration of carbon monoxide gas and can be measured in the range from 0 ppm to 1000 ppm.The device has a voice and light alarm indicatorr and a huge LCD display, making sure that it can detect harmful gas and inform people of precautions under unfavourable conditions. The gas detector is widely used in textile, telecommunication, food, petroleum, fire-fighting, municipal administration, metallurgy, chemistry, papermaking, coal mine and other industries.
Key Features
- Carbon monoxide concentration of 0 ppm-1000 ppm can be displayed on the large LCD screen.
- Automatically shut off if it is not operated for 10 minutes, to extend battery service life.
- Large-screen digital and character display, instant value and maximum value display.
- Low maintenance cost.
- Convenient to replace battery.
- Safety indication: regular light flashing and voice indication. When carbon monoxide concentration increases, buzzing voice frequency would also be increased.
- Excellent audible alarm.
- Bright back-light lightening; it can clearly indicate carbon monoxide detector under dark environment.
- Three-year service life for sensor and 100 hour alkaline battery service life (typical value).
- Solid shell and robust electric characters.
- Special sensor for stable electronic chemistry carbon monoxide.
- Support carbon monoxide detection.
Technical Specifications
| Measuring Range | 0 ppm ~ 1000 ppm |
| The Basic Error | ﾱ 5% (F.S), ﾱ 10 ppm |
| Resolution | 1 ppm |
| Minimum Reading | 1 ppm |
| Response Time | 60 seconds |
| Check the highest and lowest concentration of carbon monoxide | Yes |
| Maximum, Average and Data Retention | Yes |
| LCD Backlight Display | Yes |
| Setting the highest and lowest concentration of carbon monoxide | Yes |
| Auto Power off Function | Yes |
| Buzzer Alarm Limit Settings | Yes |
| Low Power Indicator | Yes |
| Detection of Gas | Air, Carbon monoxide |
| Sensor Type | Electrochemical CO sensor |
| Power | 2×1.5 V AAA battery |
| Preservation of the Environment | -14 ﾰF ~ 176 ﾰF(-10 ? ~ 80 ?)
10 ~ 75% RH |
| Dimensions | 2.19 in � 1.17 in � 5.33 in (55.7 mm � 29.9 mm � 135.5 mm) |
| Weight | 0.22 lbs (104 g) |
| Working Environment | 32 ﾰF ~ 122 ﾰF (0 ?~50 ?)
10 ~ 90% RH |
Additional Information
LCD display
- Detection in process
- Maximum value
- Average value
- Data hold
- Backlight
- Battery electric quantity
- Gas concentration reading
- Gas concentration unit
- Temperature reading
- Temperature unit
Name and function of each component
- Air hole
- LCD display
- Inspection
- Power switch
- Setting
Operation Instructions
- Startup
- Press the power switch
to startup. - Carbon monoxide concentration value indication
- After startup, LCD panel will display in the full screen, and display carbon monoxide concentration value and temperature value under current environment after counting backwards for 10 seconds.
- Long press “SCAN” to switch temperature unit between centigrade and Fahrenheit, and in case that carbon monoxide concentration value is 0 as displayed on the screen, it indicates that there is no carbon monoxide under the current environment.
- Buzzing
- In case carbon monoxide concentration is between 50 ppm and 100 ppm, buzzing will not be on continuously; in case the carbon monoxide concentration is above 100 ppm, buzzing will be on continuously. It can change buzzing alarm limit by setting maximum and minimum concentration value.
- Check the maximum and minimum carbon monoxide concentration value
- Press ﾓSET”, the screen displays “HI.”, and the default maximum carbon monoxide concentration value is 100 ppm, press the ﾓSET” again, the screen displaysﾓ Lo”, and the default minimum carbon monoxide concentration value is 50 Press down “SET”, the instrument will display the maximum and minimum carbon monoxide concentration values repeatedly.
- Set the maximum and minimum carbon monoxide concentration values
- Long press the ﾓSETﾔ, and ﾓHI.ﾔ or “Lo” will flash. Press “SET”, and the instrument will display “HI.” or “Lo” repeatedly. Long press “SCAN” or power switch to increase or decrease carbon monoxide concentration values and increase or decrease action can be rapidly obtained by long press the key. For example, during “H.” flashing, press “SCAN” for once, and 100 ppm will change into 101 ppm; press power switch again, and 101 ppm will change into 100 ppm, and so on. It will automatically exit the setting status if it is not operated for 10 seconds. Or long press “SET” again, “Hl.” or “Lo” will stop flashing, and it can also exit the setting status by pressing “SCAN”.
- Maximum value, average value and data hold
( 1)Press “SCAN”, and the screen will display MAX, and at this time the screen will display the maximum reading.
(2 )Press “SCAN” again, the screen will display AVG, and at this time the screen will display the average reading.
(3 )Press “SCAN” again, the screen will display HOLD, and the current data will be locked up.
(4 )Press “SCAN” again and the screen will display SCAN.
( 5)Press “SCAN”, and the instrument will display the recorded maximum average value reading and the current locked value.
( 6)LCD backlight
( 7)Press the power switch under starting status, the backlight will be on, and the backlight will be automatically off if the power switch ﾠis not pressed again for 10 seconds.
- Shutdown
- Manual shutdown; please long press power switch until “OFF” appears to shut down.
- Automatic shutdown: it is regarded as default that the machine will automatically shut down if it is not operated for 10 minutes.
- Battery replacement
- When the battery power is not sufficient, LCD would display
which means that the battery power is not sufficient and it is necessary to replace new battery. If the instrument has not been used for longtime, please take out the battery to prevent electricity leakage which may damage the instrument.
Safety Instructionﾠ
- Understand and know toxicity of carbon monoxide
| 0-1 PPM | Normal |
| 9 PPM | ASHRAE 62-1989 regulated standard living area |
| 50 PPM | Average for staying for eight hours in OSHA closed space |
| 100 PPM | OSHA exposure limit |
| 200 PPM | Light headache, tired, sick and dizzy |
| 800 PPM | Dizzy and sick and die in two or three hours |
US Department of Labor regulates in Article 24 of the 1917 OSHA that: carbon monoxide concentration in any closed space should not be higher than 50 PPM (0.005%). If carbon monoxide concentration exceeds 100 PPM (0.01%), it is necessary for workers to transfer their sites.
- Carbon monoxide and tools fault:
Typical problems of highly-concentrated carbon monoxide that may be generated is indicated in the following table
| Tool | Fuel | Typical Problem |
| Gas Stove
Indoor Heater |
Petrol
Natural gas Liquefied gas |
1. Damaged heat exchanger
2. The air is not sufficient to support normal burning of fuel. 3. Pipe damage or blocking 4. Fire stove imbalance 5. House is improperly pressed |
| Central Furnace | Coal
Kerosene |
1. Damaged heat exchanger
2. The air is not sufficient to support normal burning of fuel. 3. Fireplace damage |
| Indoor heater
Central heater |
Kerosene | 1. Adjustment error
2. Wrong fuel (not K-1) 3. Wrong lamp wick or lamp wick height 4. The air is not sufficient to support normal burning of fuel. 5. Abnormal system exhausting |
| Water Heater | Natural gas
Liquefied gas |
1. The air is not sufficient to support normal burning of fuel.
2. Pipe damage or blocking 3. Heating stove imbalance 4. House is improperly pressed |
| Wave Oven | Natural gas
Liquefied gas |
1. The air is not sufficient to support normal burning of fuel.
2. Heating stove imbalance 3. Wrongly used as indoor warm heater 4. Abnormal system exhausting |
| Stove
Fireplace |
Gas
Wood Coal |
1. The air is not sufficient to support normal burning of fuel.
2. Pipe damage or blocking 3. Green or processed rice material 4. Damaged heat exchanger 5. Damaged heating room |
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