Dust Monitor ES-642 (MET-ONE)

Dust Monitor ES-642 (MET-ONE) is a precise and efficient instrument widely used in air quality monitoring.

Capable of measuring various types of particulate matter, from PM1 and PM2.5 to PM10, the ES-642 helps you accurately understand air pollution levels, protecting health and the living environment.

Introduction to the Dust Monitor ES-642 Device

In the era of industrialization and urbanization, air pollution is becoming increasingly serious, directly impacting human health. To address this issue, measuring and monitoring air quality has become crucial.

Dust Monitor ES-642 (MET-ONE) emerges as an effective solution, helping you accurately assess air pollution levels in various areas.

The ES-642 Remote Dust Monitoring Device from Met One Instruments (USA) is an industrial air quality sensor designed to provide real-time particulate matter concentration measurements in both indoor and outdoor environments.

Our ES-642 measures particulate matter concentration using a highly sensitive forward-scatter laser nephelometer, with a measurement range from 0 to 100 mg/m³ (0 to 100,000 μg/m³). As supplied, the ES-642 provides TSP particulate monitoring capabilities, with optional sharp-cut cyclones available for PM1, PM2.5, or PM10.

Operating Principle of the ES-642

Air is drawn into the measurement chamber through a TSP sample inlet installed on top of the device or an SCC (Sharp Cut Cyclone) module corresponding to each type of particulate matter: PM1, PM2.5, and PM10 (if used). The sample is drawn and passed through the measurement chamber, where a sample heater stabilizes and maintains humidity below 50% to prevent measurement errors caused by sample moisture.

When the laser beam passes through the sample, if particulate matter is present, it causes optical phenomena such as refraction and reflection. The scattered light is collected by a photodiode, and the received signal is linearly proportional to the amount of particulate matter present in the sample.

Key Features of the Dust Monitoring Device

The ES-642 Dust Monitoring Device operates based on the laser scattering principle, allowing for accurate measurement of particulate matter concentration in the air. It boasts several outstanding features:

• The device's outer casing is made from durable materials that can withstand harsh weather conditions such as rain, sun, and dust. This allows the device to operate stably and continuously outdoors for extended periods without damage.
• Air filtration system prevents dust and dirt from entering the optical components, ensuring accurate measurements even in adverse environments.
• Automatic zero calibration reduces measurement drift over time by automatically adjusting the zero value every hour.
• Controlled sample heating maintains sample humidity to minimize measurement errors.
• A front-panel LCD provides information on particulate matter concentrations, flow rate, and device status.

Applications of the ES-642 Dust Monitoring Device

The ES-642 Dust Monitoring Device is widely used in various fields, including: