A. Product Overview

Temtop PMS11 is an embedded and remote particle counter specially designed for online monitoring of atmospheric environments. It is widely used in filter testing, dust monitoring, and other air monitoring systems.

The device supports RS485 communication and operates as an embedded module for integration into monitoring systems. It measures particle concentration across multiple particle sizes and is designed for continuous or intermittent operation.

B. Working Principle

The PMS11 operates based on the MIE scattering principle to monitor particle concentration.

When air passes through the light collection chamber, particles scatter light from the beam. The photoelectric collection unit converts the scattered light into voltage pulse signals. These signals are then processed through pre-amplification and analog-to-digital conversion to produce digital output.

• The number of pulses corresponds to the number of particles
• The amplitude of pulses represents particle size

After calibration using standard substances, the device determines the particle concentration in the environment.

C. Why It Is Used

The PMS11 is used for monitoring particle concentration in atmospheric environments where online and real-time measurement is required.

It is applied in:

• Filter testing systems
• Dust monitoring systems
• Air monitoring systems

It supports continuous and intermittent measurement modes, allowing flexible monitoring based on application requirements.

D. Suitable Buyers

Based on the applications and design described in the document, PMS11 is suitable for:

• Manufacturers developing air monitoring systems
• System integrators working on filter testing equipment
• Users requiring dust monitoring and air monitoring solutions

E. FAQ (SEO-Optimized, PDF-Based)

1. What does the PMS11 measure?

The PMS11 measures particle concentration across multiple particle sizes including 0.3μm, 0.5μm, 0.7μm, 1.0μm, 2.5μm, and 5.0μm.

2. What is the working principle of PMS11?

It operates based on the MIE scattering principle, where particles scatter light and the signals are converted into digital data to determine particle concentration.

3. What is the communication interface of PMS11?

The device uses RS485 communication with Modbus RTU protocol.

4. What is the sampling period of the device?

The sampling period is 6 seconds.

5. What is the flow rate of PMS11?

The flow rate is 1.1 L/min with ±5% accuracy.

6. What are the operating conditions?

• Operating temperature: 5°C to 45°C
• Operating humidity: less than 90% RH

7. What power supply is required?

The device operates on a 12V DC power supply.

8. What measurement modes are available?

The PMS11 supports:

• Continuous measurement mode
• Intermittent measurement mode

9. What is the resolution of the particle counter?

The resolution of the device is 1 particle (P).

10. How should the sensor be installed?

The air inlet should be connected to an external probe with a hose length within 30 cm to ensure accurate sampling.