Langder Technology Co., Ltd. focuses on indoor and outdoor environment detection and treatment, home intelligent product development and production. We has strong independent research and development team, efficient production capacity, manufacturers direct supply, one hand source, product one year warranty service,We accept OEM , we can your own LOGO, mold, and unique design on the product .
PM2.5 Sensor technolology
PM2.5 ( 0-999 ug/m³ )
PRODUCTION LINE :
Gas analyzer Formaldehyde(HCHO) Monitor Indoor Air Quality Logger Detector Accurate Testing Data with TVOC/HCHO/TEMP/HUM/AQI
Handheld design,very smart,black color,Variety of interface style switching.
Accurate detection for Formaldehyde HCHO ,TVOC including benzene,AQI,TEMP,HUM
It can be used in office, indoor and fitment pollution detection,24 hours real time monitoring.
Built in Li-battery 1000mAh,including Usb charging cable,user manual.1 year warranty.
The formaldehyde detector meter is adopted Electrochemistry Sensor Technology ,
Strong anti-interference, with usual calibration,detect more accurate.
it analyze air quality and detect HCHO,TVOC ,AQI,TEMP ,HUM display.
The formaldehyde detector meter is suitable for new furniture & decoration, living room, for the new car etc.
24 hours real time monitoring
TFT Big electronic screen, clear display, convenient for your reading.
What are included :
Main Unit 1pc
User manual 1pc
USB Charging cable 1 pc
Q: Why do I need to calibrate? A: Our products work in the form of outdoor formaldehyde-free air sampling as a benchmark, and then get indoor air formaldehyde content as a comparison, so the new machine products for a long time not used, the detection of environmental temperature changes need to change First calibrated and then tested, the value of this calibration for the subsequent detection of the accuracy of a great relevance. Calibration environment must avoid spices, perfumes, paint, cigarettes, air fresheners, alcohol and other chemical pollutants, so as not to damage the sensor.
Q: the test value has been 0, spray perfume will rise? A: Please re-calibrate outdoors. Detection of spices, perfume, paint, cigarettes, air fresheners, alcohol and other chemical pollutants, so as not to damage the sensor.
Q: How much range of detection of formaldehyde concentration detector,how many square meters? A: 1. The principle is less than 50m3 ,the room should be set 1 to 3 points;50 ~ 100m3 Set 3 to 5 points;More than100m3 at least 5 points. On a diagonal or plum blossom evenly distributed. 2.Sampling points should avoid the ventilation, from the wall distance greater than 0.5m. 3.The height of the sampling point: in principle, consistent with the human breathing.Relative height of 0.5m ~ 1.5m between.
Q: Why PM2.5 readings with the published value on the site is not the same? A: Because the location and conditions of the test is difficult to reconcile with the weather station, the weather station in the city there are several sampling points, each sampling point measured data are also very different, the sampling point of the location is strictly required; height 3 to 30 meters, air circulation, can not be close to the chimney, furnace and other obvious sources of pollution. And there are no high-rise buildings, trees or other obstructions that can impede the flow of ambient air around the instrument.
Q: Why is the PM2.5 test value changing? A: PM2.5 data are changing at all times, with the air, wind, humidity and other environmental factors change, in the room smoking, cooking fumes, car exhaust emissions, coal, chimney, furnace Such as pollution sources will change the PM2.5 value of this area, resulting in differences in the detection data.
Q: Why is the product sounding when working? A: PM2.5 detection need to collect a lot of mobile air, in order to ensure accurate detection of the fan needs strong operation, so a little sound is normal.
Q: What is the standard for formaldehyde (HCHO)? A: ≤ 0.10mg / m3 ("indoor air quality standards" GB / T18883-2002)
Q: What is the standard for total volatile organic compounds (TVOC)? A: ≤ 0.6mg / m3 (GB / T 18883-2002 and GB 50325-2001 Class II civil construction)