Using 24-bit AD conversion Design Liquid Crystal Display Bilingual 6v Battery Powered Electronic Chemical Sensor, precision 0.01 ppm This product can be customised to the customer ' s requirements, or can be designed to be modified to the relevant product. The formaldehyde detector's instructions, Shanghai Eagle Electronics. Note: This product is a high-precision formaldehyde detector, sensitive to chemical gases, with a sensitivity of one-hundred thousandths, when used, avoiding chemical gas interference, away from perfume, not smoking. The detector does not...
Adopts 24-bit AD conversion design
LCD display
Chinese and English bilingual switching
6v battery powered
Electronic chemical sensors, 0.01 ppm precision
The product can be customized to meet client requirements or designed to be relevant.
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Formaldehyde detector instruction manual
Shanghai Yinglong Electronics
Note that this product is a high-precision formaldehyde detector, which is very sensitive to chemical gases and is one in 200,000. It is used in a way that avoids chemical gas interference, is far from perfume, and is not allowed to smoke. The detector does not blow at the time of test, and the body breathes at least 1 metre away from the detector when looking at the data. The different concentrations of formaldehyde gas in the house show different data, so it is impossible that a room has been the same data. The instrument keyboard and monitor surface have a thin patch that can be removed by itself.
Text Switch: Hold on until you turn on, then hold on OK, there's a language selection interface, two buttons are released, you choose to enter the English interface, and you enter the Chinese interface. This feature is available only in version 4.0.
When the detector is available, the battery box lid in the back is opened and battery No. 7 is loaded with 4 knots and the data is displayed on the screen.
Strength indicates concentration normal indicates normal serious means serious exceed means over-standard adjust means start-up is automatically adjusting. Temp indicates temperature.
Taking the detector inside the new furniture and placing it for about five minutes will show the current formaldehyde concentration.
The first line, ppm, refers to international standards, while the second line, mg/m3, refers to Chinese standards and the corresponding relationships are:
International standard datappm*1.34 = national standard mg/m3. Internationally prescribed formaldehyde content above 0.08 ppm represents excess, i.e. more than 0.08 of a million gaseous molecules. That is to say, 100 million gaseous molecules contain only 8 formaldehyde molecules, exceeding the standard. Thus, the product is abnormally sensitive to gases and normally shows less than 0.04 ppm. This note must be read carefully before using this product, and any irregular use can lead to unrealistic data.
If formaldehyde levels in the room are to be detected, because the formaldehyde released when opening windows is normally removed from the air, it must be closed for at least half an hour, and the data shown by the detector is correct.
In general, the monitor will be placed in the new three-board furniture and the data will soon rise.
Keyboard has four arrow keys and one k key. Each of these keys is used to switch temperature and system functions. If you press, enter the system function settings. The interface is as follows:
The cursor stays in the last row. And, respectively, is used to move the cursor. Reset is the default setting for restoring the machine. That is, after the user has performed the correction, no correction was successful, leading to a deviation in the internal sensor's zero-point data. In order to avoid displaying data deviations, it is possible to restore the plant setting, which indicates a response to the internal parameter. Off means shut down the machine.
However, because of the properties of internal electrochemical sensors, there is a risk of zero changes later, and because the background environment for gas contamination varies from one city to another, direct use of plant data leads to data deviations. Therefore, the user correction function is provided, which adjusts the starting zero of the system. Users must take the formaldehyde detector to the outside environment and then correct it. To read the correct calibration data, the condition is that there is no air pollution in the outside environment and no car tail gas. There is a possibility that gas contamination from the external environment is higher than indoors (e.g. near the chemical plant, as is the case with the Shanghai Gold Hills petrochemical annex), so that the correct data is inaccurate and, in this context, the detection data from the room is obtained less.
The human breath is far removed from the sensor on the formaldehyde detector, the round hole in the middle. And there is no wind to the hole, nor can the hole be exposed to the rain. The calibration will last 120 seconds, and once the calibration is over, the data will be stored in the interior, and it will not be corrected later. Of course, it is best every few days.
Turns off: The user can choose off. If you want to turn on the engine, just press the OK button. If you do not turn off the battery, the battery works for two days.
The formaldehyde will automatically switch to the temperature display in the last row after the back light has been extinguished and can be pressed again if system settings are needed
and .
Backlights are automatically closed for about 30 seconds without keys, and if backlights are to occur, you can press the OK button.
Precautions for use
(1) Batteries should preferably be removed after testing, and new batteries generally work for two consecutive days.
(2) The data shown by the detector are correct only after 30 minutes after the windows, doors, and doors have been closed, prior to the detection of spaces such as bedrooms, living rooms, clothing rooms, etc. The average reading of multiple points is the average of the levels of formaldehyde in the air of the room.
(3) The product is sampled in the form of a free circulation of air, with a certain response time when the product moves from room A to room B for testing. After a steady reading of about three minutes, the detected value is the value of formaldehyde at the detection point.
(4) The internal electrochemical sensors, in addition to being sensitive to formaldehyde gases, also reflect organic gases such as alcohol. Therefore, when using this product for testing, avoid exposure to alcohols such as alcohol, perfumes and high concentrations of HS, CO, SO, H, smoke.
(5) The product is based on a proliferation sampling method of free circulation of air, indoor air is in circulation at all times, air entering the sensor ' s sampling window at different points of time, and formaldehyde content in air may vary, so it is normal to monitor a small amount of floating up or down.
(6) Please do not breathe directly into the sensor or block the sensor window, which would interfere with the normal work of the product.
(7) Do not place this product in a high concentration of formaldehyde that is beyond the scope of the survey, otherwise the product may be damaged.
The World Health Organization has specified that the level of formaldehyde should not exceed 0.08 ppm in the United States of America: 0.10 ppm; Germany: 0.10 ppm; Belgium: 0.12 ppm; Finland: 0.10 ppm; Italy: 0.12 ppm; Netherlands: 0.10 ppm; Norway: 0.13 ppm; Austria: 0.10 ppm; Sweden: 0.13 ppm; Spain: 0.15 ppm. The maximum permitted concentration of formaldehyde in indoor air should not exceed 0.08 mg/m3 (approximately 0.06 ppm).
Precautions for use
(1) The screening of windows, doors, and so forth is done 10 minutes before the screening of spaces such as bedrooms, living rooms, and cloakrooms.
(3) The product is sampled in the form of a free circulation of air, with a certain response time when the product moves from room A to room B for testing. After a steady reading of about three minutes, the detected value is the value of formaldehyde at the detection point.
(4) Any sensor works with a certain amount of external substance, so when using this product for testing, avoid exposure to alcohol substances such as alcohol, perfume and high concentrations of HS, CO, SO, H, fumes, etc.
(5) The product is based on a proliferation sampling method of free circulation of air, indoor air is in circulation at all times, air entering the sensor ' s sampling window at different points of time, and formaldehyde content in air may vary, so it is normal to monitor a small amount of floating up or down.
(6) Please do not breathe directly into the sensor or block the sensor window, which would interfere with the normal work of the product.
(7) Do not place this product in a high concentration of formaldehyde that is beyond the scope of the survey, otherwise the product may be damaged.
2. Product technical parameters
Name: Portable formaldehyde monitor
Display mode: LCD
Measurement method: electrochemical sensing technology
Monitoring method: automatic
Power source: 6V, regular 7 alkaline batteries, 4 knots
Working current: 10mA
Host weight: 180g
Outer size: 81 mm x 31 mm x 165 mm
Usage environment
Temperature range: -10-50°C - 4-122°F
Humidity range: 20-90%RH
Atmospheric pressure: 86-106KP
Measurement indicators and scope
Measurement range: 0-10ppm
Maximum concentration: 20ppm
Zero point drift: +-0.02ppm
Resolution: 0.01 ppm
Accuracy: +-5%
Storage temperature: 0-20 degrees
Response time: <50S
Recovery time: <90S
Automatic shutdown voltage: <=2.7V
Do not place formaldehyde detectors in places where chemicals are present for long periods of time. For example, kitchens, new renovations have high odour levels. Otherwise, electrochemical sensors are subject to long-term chemical reactions, causing the sensor to fail early.
If the user does not want to be tested in accordance with the present note, he/she will have access to the local Quality Testing Centre to commission the test to a professional.
Note: Too low battery voltage will lead to darkening liquid crystal displays, darkening, abnormality, and at this point the battery will be replaced.
Warranty Terms:
1 Users may not dismantle machines themselves, otherwise they are disqualified from warranty.
The replacement of electrochemical sensors is subject to a separate fee.
3 Instruments are maintained for six months at the expense of the families themselves.
4 LCD is not covered by warranties, such as repairs due to LCD problems, and maintenance fees are charged.