Teledyne API T640 PM Mass Monitor

The Teledyne API T640 is a real-time particulate matter (PM) mass monitor that uses broadband spectroscopy with a 90° white-light scattering method. It measures PM₁₀, PM₂.₅, and PM₁₀–₂.₅ simultaneously with a resolution of 0.1 µg/m³ over a range of 0.1–10,000 µg/m³. The system includes a 5.0 lpm sample flow, optional 11.67 lpm bypass, and is US EPA FEM approved. It features a touchscreen interface with NumaView software and supports remote access via Ethernet.

The T640x model is also available, featuring an optional 11.67 LPM bypass flow for expanded regulatory compliance, including US EPA FEM approval for PM10 and PM10-2.5.

Product Info Product Options Related Products

Measurement Principle	Broadband spectroscopy using 90° white-light scattering with Polychromatic LED
Particle size resolution	256 sizes over 0.18 – 20µm range, combined to 64 channels for mass calculation
PM Mass Measurements	PM10, PM2.5, and PM10-2.5 simultaneously
PM Mass Resolution Measurement Range	0.1 - 10,000 µg/m³
Mass Measurement & Display Resolution	0.1 µg/m³
Precision	±0.5 ug/m³ (1-hr average)
Lower Detectable Limit	<0.1 ug/m³ (1-hr average)
Data Rate	10s to 48hr (user selectable)
Flow Rate	5.0-lpm sample flow (Standard model); 11.67-lpm optional bypass flow (with option 640x)
Flow Accuracy	Within ±1%; (Typically within ±0.5%)
Operating Temperature	0 – 50°C, non-condensing
Ambient Temperature	-40 – 60°C
Ambient Relative Humidity	0 - 100%
Sample Humidity Control	24VDC, 90W (max) heater controlled to 35% RH