Particulate Monitor
Technical principle
E-EM-07PM is based on atmospheric particulate enrichment technology and β-ray absorption method for gas monitoring. The instrument will automatically accumulate particles with a particle size less than 2.5 (10) microns on the roll. Using low-emission C14 as a radiation source, the radiated beta rays are received by the detector after passing through the filter that enriches the contaminants. The detector consists of a photomultiplier tube, a plastic scintillator, and a counter. According to the β-ray energy received by the detector, the thickness of the enrichment can be quantitatively analyzed, and the PM2.5 (10) concentration in the air can be deduced.
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Method |
the beta decay method |
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Monitoring objects |
PM10 / PM2.5 |
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Range |
0 ~ 10mg/m3 (customizable) |
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Detection limit |
5μg/m3 |
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Linearity |
correlation coefficient > 0.99 |
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Sample Flow |
16.7 L/min |
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Sampling Time |
5mins~1000 mins can be set |
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Flow Error |
≤±1% F.S. |
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Membrane Filter Replacement |
2 months |
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Working Temperature |
0 ~ 40 ℃ |
Feature
1. Function of pre-calibration, automatic zero calibration and automatic fault diagnosis function, greatly reduce the maintenance work required
2. PM10 and PM2.5 cutter is selective to realize the monitoring of different diameter particles
3. Communication ways such as RS232/485, USB, GPRS, Ethernet to achieve real-time remote monitoring and data transmission
4. The built-in LCD touch control, convenient to operate on mobile platforms such as the vehicle monitoring station
5. 60 μCi of sealed radiation sources, no need to worry about radiation safety
