Temtop PMS 31 High Precision Remote Particle Counter for High-Purity Monitoring
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Shipping within 24 hours.
Free Standard Shipping: 3-5 Days for delivery.
Next Day Shipping Service Available in US: Orders placed before 12:00pm PST will be shipped on the same day!
Fast Worldwide DHL Shipping.
Free & Fast Returns
1 year warranty & 30 Days easy & fast return.
* Customers outside the USA need to pay taxes on their own.
The PMS 31 is a high-precision remote particle counter designed for professional cleanroom and industrial air quality monitoring. Built for reliability and accuracy, it features a 7-channel particle size detection system and a powerful built-in 28.3 L/min vacuum pump for high-volume sampling.
Engineered with industrial-grade components, the PMS 31 delivers stable, long-term operation in demanding environments such as semiconductor, pharmaceutical, and precision manufacturing facilities. Its metal housing ensures durability and strong anti-interference performance.
All instruments are ISO 21501 and JJF 1190-2008 compliant, ensuring measurement traceability and consistency with global standards.
Key Features
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Seven-channel monitoring: 0.3 μm, 0.5 μm, 0.7 μm, 1.0 μm, 2.5 μm, 5.0 μm, 10 μm
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High flow rate: 28.3 L/min (±5%) for fast and accurate particle sampling
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Long-life laser source: 50 mW / 780 nm, up to 20,000 hours of continuous operation
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Industrial-grade RS485 (Modbus RTU) communication for seamless integration
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5-inch TFT display for intuitive data visualization
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Adjustable sampling time: ≥ 10 seconds
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Built-in air pump — compact design, easy installation, and maintenance-free
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Wide operating range: 0–50 °C; DC 24 V supply
Specifications
| Parameter | PMS 31 |
|---|---|
| Measured Particle Size | 0.3 μm, 0.5 μm, 0.7 μm, 1.0 μm, 2.5 μm, 5.0 μm, 10 μm |
| Counting Efficiency | 0.3 μm: 50%; ≥ 0.5 μm: 100% |
| Resolution | 1 P/L |
| Flow Rate | 28.3 L/min (Error ±5%) |
| Vacuum Source | Built-in air pump |
| Measurement Principle | Light scattering method |
| Laser Source | 50 mW / 780 nm long-life laser |
| Alarm | Indicator light |
| Sampling Time | Adjustable (≥10 s) |
| Communication | RS485 (Modbus RTU) |
| Operating Temperature | 0–50 °C |
| Storage Temperature | -20–60 °C |
| Operating Voltage | DC 24 V |
| Operating Current | 3500 mA (average) |
| Display | 5-inch TFT screen |
| Dimensions | 120 × 180 × 80 mm |
Why Choose PMS 31
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Meets ISO 21501 and JJF 1190-2008 standards
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Designed for continuous operation (24/7 use)
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Compatible with industrial monitoring networks
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Reliable, efficient, and built for high-purity applications
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.
Return Shipping Address:
Elitech Technology, Inc.
2528 Qume Drive #2, San Jose,
CA 95131, United States
Tel: (+1)4088444070
SHIPPING
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.
United States: Shipping within 24 hours.
Free Standard Shipping in US: 3-5 Days for delivery.
Next Day Shipping Service Available in US: Orders placed before 12:00pm PST will be shipped on the same day!
Worldwide: Fast Worldwide DHL Shipping.
