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IAQ sensor 5-in-1 measurement of PM1.0, PM2.5, PM10, TVOC, HCHO, Particle number, support data storage and export
Instructions for Use:
- When you use the BR-A air quality monitor, please shut it down regularly.
- If the TF memory card is full, please replace it with a new card in time. Otherwise, there may be a sudden automatic shutdown of the machine.
Fault description:
The machine suddenly shut down by itself, or plug it in and it won't charge, try the following steps to rectify the fault:
- Take out the TF memory card on the back of the machine
- After power off, connect the charger to charge for more than 6 hours and then turn it on without the TF memory card to see if it can work.
- If you need data logging, you can try to replace a new TF memory card into the machine to see if it works properly.
6-channel Particle Number
6-channel particle high precision laser sensor, 3-wire fan speed feedback, laser software compensation
- PM0.3
- PM0.5
- PM1.0
- PM2.5
- PM5.0
- PM10
Data Storage and Data Export
Standard 128M data memory card that storage 100K+ data records
- Data storage frequency: once a minute
- Connect the computer via Card Reader
- Data records can be exported in TXT file, users can convert it to EXCEL file
- PM1.0, PM2.5, PM10, CO2, TVOC, HCHO, Particle number 0.3 0.5 1.0 2.5 5.0 10 can be recorded
Drawing 1hour , 12hours, 24hours air quality change curve, can intuitively distinguish the trend of air change
- 3 display modes: numerical display / Data curve display / particle number display
- History can be directly queried on the machine
Active air interaction system
- 3-way circular air convection
- increases contact area with the sensor
- mute fan with low noise
12-bit AD signal amplifier chip
- Accurately distinguish tiny current signals
- convert the NA-level current amplification acquisition into a digital signal
- accurately measure air pollutant concentration
48MHZ high frequency processing speed
- More sensitive measurement
- Faster algorithm response
- High frequency data processing speed
M. Machado
Reviewed in the United States on September 3, 2024
The BRWISSEN Air Quality Monitor, with its quiet operation, compact design, and reasonable user interface, measures PM, TVOC, HCHO, and CO2. Priced at $150, it would be a good deal if these measurements were consistent and reliable. However, the measurements are so inconsistent that they contradict themselves, casting doubt on the monitor's reliability.For particulate matter (PM), the monitor measures PM1.0, PM2.5, PM10, and particle counters for >0.3, >0.5, >1.0, >2.5, >5.0, and >10 micrometers. PM[X], where X is a number, measures the total mass of all particles in the air whose diameters are less than or equal to X micrometers; the unit is microgram per cubic meter. A particle counter >X, where X is a number, counts the number of particles whose diameters are greater than X micrometers per liter of air. Therefore, the following statements should always be true:1. If the particle counter >1.0 is zero, PM1.0, PM2.5, and PM10 must be equal because only particles less than or equal to 1 micrometer are being measured. Notice that the particle counters >2.5, >5.0, and >10 must be zero when the particle counter >1.0 is zero.2. From the definition of PM[X], the measurement of PM10 must be greater than or equal to the measurement of PM2.5, and the measurement of PM2.5 must be greater than or equal to the measurement of PM1.0.The first picture I have included shows the monitor violating the first constraint. While this violation only sometimes occurs, it is easy to spot. The second picture starkly shows a violation of both constraints. This second violation is hard to spot.The contradictions are not limited to the PM measurements. HCHO measures the concentration of formaldehyde in the air, and TVOC measures the concentration of all volatile organic compounds in the air. Both these measurements have the same unit, namely, milligrams per cubic meter. Since formaldehyde is a volatile organic compound, TVOC must be greater than or equal to HCHO. The third picture shows the HCHO measurement being more than 20 times higher than the measurement of TVOC.Finally, my third picture also shows that the CO2 measurement of the BRWISSEN Air Quality Monitor significantly diverges from the measurements of two other monitors: Aranet4 Home and Autopilot CO2 monitor. BRWISSEN measured 400 ppm, whereas Aranet4 553 ppm and Autopilot 532 ppm. The measurements of Aranet4 and Autopilot are within the tolerance of ±(30 ppm + 3% of reading) of the Aranet4.
Kuginuki
Reviewed in the United States on July 16, 2024
I've been fortunate enough to try out a few different air quality monitors recently and I can confidently say this is my favorite one.The particle counting sensor appears to responsive, and actually reasonably accurate. I've have a few sensors from other brands that play pretend at monitoring particulate in the air, but this one actually responds predictably to changes in the environment.Having data logging built in is also awesome. You can access some quick graphs from the monitor itself, or data is saved once a minute to a text file on the included micro SD card if you really want to geek out and analyze data yourself.The CO2 sensor doesn't seem to get confused by other compounds in the air. All of the readings this has given me have lined up closely with other trusted sensors.Battery life is okay, but not great. I'd treat it more as a way to keep it powered for short periods while you move it between outlets. If you're hoping to take this on the road with days in between charges you're going to be disappointed.I also couldn't help myself and took a peak inside. Solder joints all look solid, components are thoughtfully laid out, and I absolutely love that the battery is easy to access so I can safely dispose of this down the line when the device reaches the end of it's life cycle. This is a quality product that performs exceedingly well. Highly recommended!
Ace
Reviewed in the United States on December 5, 2024
The manufacturer has given instructions on what to do if the monitor shuts off with a memory card, but mine shuts off constantly without a memory card. What’s the use of a memory card if this device won’t stay on? It also doesn’t stay charged very long. I’d give it 4 or 5 hours. If you’re busy or not home, you’re out of luck. I then kept it on the charging cord permanently and it started to shut off about 10 times a day. Even the most hellbent will find this impossible. Great concept, manufacturer needs to rework the item. I didnt ask for a refund, the manufacturer sent me a message offering it to me. That’s exceptional customer service.
Patti A. Herbert
Reviewed in the United States on October 13, 2024
Monitors 3 sizes of dust particles (laser illumination) and CO2. Reports micrograms per cubic meter, has history function. Charges on USB. Small - palm sized.
Customer
Reviewed in the United States on October 12, 2024
this device comes without a charger, so I connect about 5 different chargers with different capacities. they charge my phones and other devices well. this device is charging very slowly (I also connected a super charger). it consumes a lot of energy, so just on a battery without a charger, its stay is generally about 2-3 hours. the device turns off periodically. After we noticed that the device was turned off, we turned it on, after the device began to calibrate itself for about 6 hours. I also tried to keep the charger plugged in at all times. but the device just turned off after a while. then I turned it on and it started autocalibration again and so on in a circle, charging - calibration. I can't use it normally. either it doesn't have enough power, or it's auto-calibrating. this is actually the most expensive of this type of device, and I paid for the quality and got the worst of them.
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