TE-6070VZ-2.5 PM2.5 Hi-Vol Air Sampler, VFC, Mechanical Timer, Brush Motor, 110V/50Hz

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The TE-6070VZ-2.5 is a high volume air sampler configured for PM2.5 fine particulate matter collection in environmental monitoring applications. Designed for measurement of particles with an aerodynamic diameter less than or equal to 2.5 micrometers (µm), this sampler provides reliable performance for non-regulatory studies and institutional research programs.

Volumetric Flow Control Technology

The VFC (Volumetric Flow Controlled) system uses a critical orifice with a predetermined hole diameter to control the flow rate. The critical orifice is drilled and calibrated to let only the predetermined flow rate pass through the filter, while the motor operates wide open to maintain constant flow. The critical orifice is calibrated in a NIST traceable lab to determine the volumetric flow rate, ensuring the motor runs at a predetermined flow rate as air passes through the critical orifice.

Key Specifications

Power Configuration: 110V, 50Hz
Flow Rate: 40 CFM (cubic feet per minute)
Filter Size: 8" × 10" quartz fiber
Motor Type: Brush-style with carbon brushes
Timer: 7-day mechanical timer with on/off trippers

Sampling Process

As particulates travel through the PM2.5 size selective inlet, larger particulates are trapped inside the inlet while smaller PM2.5 particulates continue through and are collected on the 8" × 10" quartz filter paper. The quartz filter is weighed before and after sampling to determine the mass of particulates smaller than 2.5 microns.

System Components

PM2.5 size-selective inlet
VFC critical orifice flow controller
7-day mechanical timer with bright yellow dial and on/off trippers
Brush-style motor using carbon motor brushes for current conduction (low cost, requires routine brush changes)
Anodized aluminum outdoor shelter
8" × 10" filter holder assembly
Elapsed time indicator
Pressure recording capability

Applications

This sampler is suitable for ambient air quality monitoring in compliance with EPA reference method requirements specified in 40 CFR Part 50, Appendix L. Applications include:

Environmental research and monitoring
Non-regulatory PM2.5 studies
Institutional air quality programs
Source assessment monitoring
Baseline ambient air monitoring

Maintenance Requirements

The brush-style motor requires routine motor brush changes, making this an economical choice for basic sampling applications. The mechanical timer provides simple, dependable start and stop control without requiring advanced programming or digital interfaces.