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Temtop PMD 331 Innovative Handheld Particle Counter for Air Quality Measurement

29 reviews
5 Stars
69% (20)
4 Stars
24% (7)
3 Stars
7% (2)
2 Stars
0% (0)
1 Star
0% (0)

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Temtop PMD 331 is an innovative device can measure the 7 mass range simultaneously 0.3μm/ 0.5μm/ 0.7μm/ 1μm/ 2.5μm 5μm/ 10μm. With a TFT LCD large screen and seven front panel buttons making the d...
$1,998.00 $999.00

Temtop PMD 331 is an innovative device can measure the 7 mass range simultaneously 0.3μm/ 0.5μm/ 0.7μm/ 1μm/ 2.5μm 5μm/ 10μm. With a TFT LCD large screen and seven front panel buttons making the device very easy to read and operate. The PMD 331 can record up to 2,000.000 readings and operate 8 hours in full charge. The unit has its own calibration mode and export function via USB or RS232.

It also has a wide range of applications such as cleaning rooms. filter testing, IQA investigation, air quality monitoring, etc...

This particle counter is composed of a Laser emitter, Silicon Photocell, Opto-mechanical Structure, Optic, Cutter, Air Pump, Filter Device, and Electronic Circuit. 

Technical Specifications
Dimensions:  6.69*4.33*1.97 Inches
Working Principle:  Laser Mie-scattering Principle
Working Temperature Range: 0~50℃
Storage Temperature Range:  -20℃~60℃
Measuring Range:   0~3,000,000 particles/ft³
Accuracy: ±10%
Traffic:  2.83L/min
Laser Emitter: 50mW, 780nm
Sampling Rate:  3~60s
Data Storage: 2,000,000 points
Communication Mode: RS232/USB
Weight:  1.8 lb.
User manual:  Download 
CE Certificate:  Download 
Calibration Certificate: Download

Key Feature
  • Measures 7 mass range simultaneous: 0.3μm 0.5μm 0.7μm 1μm 2.5μm 5μm 10μm in one minute from startup.
  • Easy to Read and Operate: 4" TFT LCD large display for viewing particle data, seven front-panel buttons for controlling a user-friendly, menu-driven platform for easy configuration.
  • Versatile Data Output Options: Stores up to 2,000,000 records and export data via USB port, RS-232 communication mode.
  • Large battery capacity: Continuous 8 hours operation after fully charged.
  • Wide Application: Trusted in HVAC, dust-free workshop, surgical rooms, filter testing, IAQ investigation, air quality monitoring and etc.

What is included
  • Particle Counter x 1
  • Filter Tube x 1
  • USB Flash Drive x 1
  • RS-232 Serial Converter Cable x 1
  • Battery Charger / Adapter x 1
  • AC Power Cord x 2
  • Operation Manual x 1
  • Carrying Case x1

Customer Reviews

4.6 / 5

Based on 29 reviews

5 Stars
69% (20)
4 Stars
24% (7)
3 Stars
7% (2)
2 Stars
0% (0)
1 Star
0% (0)

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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Note: ISO 17025 certified version data loggers are PRE-SALE only. Lead time: 2 weeks.

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