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Met One- ES-405 Simultaneous Particulate Profiler

The Met One ES-405 is an air quality monitor designed to measure different sizes of dust particles in real time for environmental and workplace monitoring.

  • Measures PM1.0, PM2.5, PM4.0, and PM10 simultaneously
  • Uses laser light-scattering technology for accurate readings
  • Suitable for continuous outdoor and indoor monitoring
  • Widely used in environmental, industrial, and smart city applications

Description

The Met One Instruments ES-405 Simultaneous Particulate Profiler is a high-performance ambient dust monitoring instrument designed for real-time, multi-channel particulate measurement. Using right-angle laser light scatter technology with a high-power 785 nm diode laser, the ES-405 simultaneously measures PM1.0, PM2.5, PM4.0, and PM10 concentrations with excellent resolution down to 0.1 µg/m³. Active volumetric flow control, combined with a stable brushless diaphragm pump and controlled sheath air system, ensures accurate and repeatable data even in challenging environmental conditions. With wide measurement ranges and user-selectable logging intervals, the ES-405 delivers reliable particulate profiling for both short-term events and long-term monitoring programs.

Built for continuous outdoor and industrial operation, the ES-405 features automatic humidity control via an inlet heater, a rugged enclosure, and multiple communication options including RS-232, RS-485, and USB for seamless integration with data loggers, SCADA systems, or remote networks. The intuitive OLED display and menu-driven keypad simplify configuration and on-site operation, while alarm relay outputs enhance safety and compliance monitoring. Certified to MCERTs, CE, and ISO 9001 standards, the ES-405 is ideally suited for applications such as ambient air quality monitoring, industrial hygiene, mining operations, smart city deployments, tunnel and fenceline monitoring, emergency response, and occupational dust assessment, where dependable, real-time particulate data is critical.

Features

  • Measures PM1.0, PM2.5, PM4.0, and PM10 simultaneously
  • Uses laser light-scattering technology for accurate readings
  • Suitable for continuous outdoor and indoor monitoring
  • Widely used in environmental, industrial, and smart city applications

Specification

PARAMETER SPECIFICATION
Measurement Principles: Right angle light scatter detection, using a laser diode as light source.
Number of Mass Channels: 4 (PM1.0, PM2.5, PM4.0, PM10)
Sample Air Flow Rate: 1.0 LPM
Sheath Air Flow Rate: 1.0 LPM
Flow Control: Active Volumetric Flow Control
Measurement Range: PM10: 10,000µg/m3, PM4.0: 4,000µg/m3, PM2.5: 2,000µg/m3, PM1.0: 300µg/m3
Data Storage Resolution: 0.1 µg/m3
Data Storage Intervals: User-Selectable 1, 5, 10, 15, 30, or 60 minutes.
Laser Type: Diode Laser, 100 mW, 785 nm.
Pump Type: Brushless diaphragm pump.
Power Supply: Universal 100-240 VAC input, 50/60Hz. Optional 12VDC.
Power Consumption: 1.0 amp @ 12 VDC (12 Watts) average continuous draw with inlet heater running.

0.63 amps (8 Watts) running with inlet heater off.

Approvals: MCERTs, CE, ISO 9001.
Operating Temperature: 0 to +50°C
Storage Temperature: -20º to +60º C
Ambient Humidity Range 0 to 95% RH, non-condensing.
Humidity Control Automatic 10 Watt inlet heater module controlled to sample RH, with set point.
User Interface: Menu-driven interface with 4×20 character OLED display and dynamic keypad.
 

 

Serial Interface:

RS-232, full duplex serial port for PC or datalogger communications. RS-485, half duplex for modem communications.

RS-485, half duplex for sensor communications.

USB port for PC communications.

 

Serial Settings:

Baud = 115200, 8 data bits, no parity, and 1 stop bit. (factory Default) 115200, 57600, 38400, 19200, 9600, 4800, 2400 (selectable).
Alarm Contact Closure: Normally closed contact closure relay output. Contact rating 1.0A @ 30V DC max.
Compatible Software: Comet™, terminal programs such as HyperTerminal®
Factory Service Interval: 24 Months typical, under continuous use in normal ambient air.
Mounting Options: Pole or wall mount bracket standard. Optional EX-905 tripod recommended.
Unit Weight 11.2 lbs
Unit Dimensions Height: 24″ Width: 12″ Depth: 6.75″

Applications

Data Sheet

Met One- ES-405 Simultaneous Particulate Profiler

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