CEM DT-9881M 6-Channel Air Quality Monitor
A professional air quality monitor for measuring particulate matter (aerosols), formaldehyde, and carbon monoxide (carbon monoxide gas).
A convenient and compact air quality monitor suitable for businesses that need to periodically measure air quality to assess indoor air quality, the performance of ventilation systems, or the concentration of particulate matter and aerosols in the air resulting from work processes. An easy-to-use and easy-to-learn air quality meter.
The DT-9881M particulate matter monitor is designed for professional air quality measurement, featuring a 6-channel particulate matter monitor and sensors for formaldehyde and carbon monoxide.
The DT-9881M simultaneously measures 6 different (fine) dust particles: 0.3 µm, 0.5 µm, 1.0 µm, 2.5 µm, 5.0 µm, and 10.0 µm, or PM2.5 and PM10 in milligrams per cubic meter (mg/m³).
In addition to measuring particulate matter, formaldehyde, and carbon monoxide, the device also displays temperature, humidity, dew point, and the cooling limit.
The device is equipped with a camera that allows you to take pictures of the measurement site; the image displays the measured values so you can verify the clarity, measurement results, and location.
Programmable functions allow the device to take multiple measurements over an adjustable time period (up to three and a half hours), making it possible to visualize changes in air quality in the room.
A single device can measure various air pollution indicators (carbon monoxide, formaldehyde, fine particulate matter, ultrafine particulate matter). The device is accurate and reliable. Record a video or take a photo—the measurement data displayed in the image can be downloaded to a computer for sharing or analysis. The location where the measurement was taken can be easily identified from the photo.
Features of the CEM DT-9881M 6-Channel Air Quality Monitor
- 2.8″ TFT color screen
- Camera and video camera
- microSD slot
- Measure 6 different particle sizes simultaneously
- HCHO (formaldehyde) sensor
- CO (carbon monoxide) sensor
- Air Temperature and Humidity
- Dew point and cooling temperature limit
- Recording of maximum, minimum, average, and differential values
- Adjustable on/off function with a timer, allowing for multiple measurements over a specific period of time.
TECHNICAL SPECIFICATIONS
| Display | Color LCD 320 × 240 |
| Data Storage | Supports 8 GB microSD cards |
| Storage Capacity | Up to 5,000 samples |
| Measurement Options | (Fine) dust particles, HCHO, CO |
| Measurement Efficiency | 50% at 0.3 µm, 100% of particles at> 0.45 µm |
| Measurement Methods | Cumulative, difference, concentration |
| Air flow | 2.83 liters per minute |
| Number of solid particle channels | 6 |
| Channels | 0.3 µm, 0.5 µm, 1.0 µm, 2.5 µm, 5.0 µm, 10.0 µm, |
| Measurement accuracy | 5% of 2,000,000 per cubic foot |
| Formaldehyde measurement range | 0.01–5.00 ppm |
| Formaldehyde Concentration | 0.01 PPM |
| Formaldehyde Measurement Accuracy | ± 5% FS |
| Carbon monoxide measurement range | 10–1,000 PPM |
| Carbon Monoxide Separation | 1 PPM |
| Accuracy of carbon monoxide measurement | ± 5% FS |




