EG AIR EGVOC-100 Bedienungsanleitung
Multifunctional Air Detector
User Manual
Be sure to carefully read this user manual regarding use and keep it for
future reference.
I. Introduction
This product is a multifunctional air detector that detects Formaldehyde
(HCHO), Total Volatile Organic Compounds (TVOC), and Particulate Matter
<2.5 micron-sized particles (PM2.5) with clock and air quality record chart.
As a professional and scientific air detection device, it combines
advanced sensor technology with a built-in fan to allow real-time
monitoring of formaldehyde (HCHO), total volatile organic compounds
(TVOC), and PM2.5 on its digital LCD display.
Features:
2.8" color liquid crystal display (LCD)
User adjustable alarm threshold to alert of hazardous conditions
Green/yellow/red indicator corresponding to three air quality levels:
Fresh, Unqualified (i.e. borderline fresh but not qualified as fresh),
and Polluted.
Large 2200 mAh capacity Lithium battery
5V 800mA Micro USB charging
Low battery warning
Why measure TVOC and Formaldehyde? TVOCs are carbon-containing
compounds produced by synthetic processes, materials, and organisms.
Formaldehyde has suspected links to nasal cancer and lung cancer and
emitted from many household materials. Most known carcinogens are
synthetic organic compounds as they can interact with DNA to cause
mutations/cancer. A combined measure can give a picture of relative
indoor pollution levels and synthetic gas accumulation.
DIRECTIONS TO MEASURE AIR QUALITY
1. Charge device on receipt until battery level is at least half full
before initial use. Power on device to determine battery level.
Place device in a well ventilated area for 20-60 minutes.
2. Power on device. Detector will begin initiation process for 3 minutes
allowing sensors to preheat and fan to draw in fresh ambient air.
This is necessary for accurate results. LED screen will display the
countdown number from 180 to 0 seconds.
3. To measure air quality, place device in any location for at least 5
minutes for most accurate and stable readings of formaldehyde
(HCHO), TVOC, and PM2.5.
4. After detection, turn device off and store in a cool, dry area.
5. If item is newly purchased or has not been used for long periods, it
may accumulate gases from packaging that can affect detection
results. In this case, place the device before use in fresh well-
ventilated air for at least 20 minutes, leaving it unused during this
period. Should results appear inaccurate despite ventilation,
consider calibration by referring to CALIBRATION procedure.
CALIBRATION
Like all scientific instruments, you can calibrate it initially or after long
storage for greatest reproducibility and accuracy of results.
Calibration procedure is for formaldehyde and TVOC sensor. PM2.5
particular matter sensor does not require calibration. This procedure is
best done OUTDOORS where formaldehyde and TVOC levels are
generally negligible.
Video of procedure for calibration:
https://www.youtube.com/watch?v=Y9ZdjQy2qAg
1. Turn on unit by sliding left sided button upwards.
2. Allow device to fully start up by allowing TVOC counter to count to 0.
3. Place device in a CLEAN OUTDOOR AIR environment for 5+ minutes
where there is no formaldehyde or TVOC. Putting the device outside for
at least 5 minutes allows full circulation of outside air into the device.
Putting the device outside longer may be even better. Place the device
outside before proceeding further.
*Generally outdoors is a clean environment with negligible
formaldehyde and TVOC. Do this procedure away from traffic or
combustion sources.
4. Push center button once to enter Menu and 2 additional times to
highlight "Sensor Calibration" in red.
5. Push the left < button to select "OK"
6. Push the left < button to select "Calibrate"
7. Push the left < button twice to select "OK" and confirm while outside.
8. Push the right > button twice to select "Back" and exit to the main
screen. You will see that device has set the HCHO and TVOC readings
as 0.000 mg/m3.
You can confirm device has been calibrated after exiting to the
main screen and seeing device reads 0.000 mg/m3for HCHO
and TVOC. Calibration means device has set 0.000 mg/m3as
corresponding to clean outdoor air which generally has
negligible or near zero HCHO and TVOC. One can think of
calibration as zeroing a weight scale. HCHO and TVOC are most
commonly emitted by synthetic materials and accumulate
indoors and degrade outdoors. DO NOT CALIBRATE unless you
have access to clean air free from formaldehyde and TVOC (organic
compounds). Avoid calibrating indoors where HCHO and TVOC are
usually higher. If you try calibrating your device indoors (NOT
recommended), you will notice that the device will read 0.000 mg/m3
indoors and will show low and inaccurate numbers.
Why are there significant differences in HCHO and
TVOC readings at different times?
There can be large variations in formaldehyde (HCHO) and TVOC
readings within a house on different days and in different rooms.
The total volatile organic compound (TVOC) readings can vary by
magnitude of 10 or more on different days. Anything from cooking to
perfume to body odor near the device can cause large variations in the
TVOC readings. Think of the device as a very sensitive electronic nose.
Remember to calibrate ESPECIALLY if you are getting inaccurate
readings or after storage as most product boxes are made from a large
amount of synthetic materials that emit HCHO and TVOC's and can
cause inaccurate readings.
Why is the TVOC reading 9.999 mg/m3?
Make sure there are no fragrances, body odors, perfumes, smoke,
aromas, detergent or cooking smells near the device as these all are
benign sources of total volatile organic compounds (TVOCs). They will
lead to higher TVOC concentrations and an elevated or 9.999 mg/m3
reading as the device is sensitive and the human nose is often exposed
to TVOC concentrations far greater than 10 mg/m3. Do not be alarmed
if TVOCs are elevated as TVOCs include any organic or biologic odors
dispersed in the air, the majority benign. If you take the device
outside, the TVOC reading should be near 0.000; if not, please be sure
to calibrate the device.
AIR LEVEL QUALITY AND GRADE
1. When formaldehyde (HCHO) concentration is less than 0.080
mg/m3 and PM2.5 is less than 55, LCD screen displays Level as
Fresh in green and air quality is fresh.
2. When formaldehyde (HCHO) concentration is between 0.080 to
0.300 mg/m3or PM2.5 is between 55 to 250 mcg/m3,LCD
screen displays Level as Unqualified in yellow, meaning air is in a
borderline condition not qualified as Fresh but not meeting criteria
for hazardous pollution.
3. When formaldehyde (HCHO) density is greater than 0.300 mg/m
3
or PM2.5 is greater than 250 mcg/m3, LCD screen displays the
Level as Polluted or Hazardous in red, meaning air quality is
considered polluted and not safe for prolonged exposure. Corrective
action including ventilation of the area should be taken.
Formaldehyde Level Interpretation
The World Health Organization guideline for indoor air formaldehyde
concentration is 0.10 mg/m3(0.08 ppm). The California Air Resources
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