Dienmern Gas Analyzers pm2.5 detector Laser Sensor alarm gas detector
-Product function :
1. Support PM2.5 / PM1.0 / PM10
2. HCHO formaldehyde test concentration
range: 0 ~ 1.999mg / m³
3. TVOC test concentration range:
0 ~ 9.999mg /m³
4. Sound alarm
5. Large screen color LCD display
6. Temperature and Humidity test
7. Low battery alarm
8. Date and Time display
9. Built-in high-capacity lithium battery
10. Screen: If the device has not been operated
for 5 minutes,it will enter the black screen
protection automatically , if there is no
operation within two hours, it will close
-What are included :
DM106A Main Unit*1
1 Q: the test value has been 0, spray
perfume will rise?
Please re-calibrate outdoors. avoid
spices, perfume, paint, cigarettes, air fresheners,
alcohol and other chemical pollutants when
testing, so as not to damage the sensor.
2 Q: Why do I need to calibrate?
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.
3.Q: Why PM2.5 readings with the
published value on the site is
not the same?
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.
4 Q: Why is the PM2.5 test value
PM2.5 data are changing all the 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.
5 Q: Why is the product sounding
As 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.
6 Q: How much range of detection
of formaldehyde concentration
detector,how many square
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.
7 Q: the test value has been 0,
spray perfume will rise?
Please re-calibrate outdoors. Detection of
8 Q: What is the standard for
A : ≤ 0.10mg / m3 ("indoor air quality
standards" GB / T18883-2002)
9 Q: What is the standard for total
volatile organic compounds
A: ≤ 0.6mg / m3 (GB / T 18883-2002 and
GB 50325-2001 Class II civil construction)
10 Q: What is the standard for fine
particulate matter (PM2.5)?