TE-10557TSP-BL VFC for TSP Hi-Vol Air Sampler, 110V Brushless SKU: TE-10557TSPBL

TE-10557TSP-BL VFC for TSP Hi-Vol Air Sampler, 110V Brushless

The TE-10557TSP-BL Volumetric Flow Controller (VFC) is specifically designed for TSP high volume air samplers operating with 110-volt brushless motor systems. This VFC controller uses a critical orifice with a predetermined hole diameter to maintain constant volumetric flow rates throughout the sampling period.

Technical Operation

The critical orifice is precision-drilled and calibrated to allow only the predetermined flow rate to pass through the filter, while the motor operates at full capacity with the orifice maintaining constant flow control. Each VFC orifice is calibrated in a NIST traceable laboratory to determine the exact volumetric flow rate. This flow controlling mechanism maintains constant air flow during the sampling period, providing greater air volume measurement accuracy than manual systems.

Key Specifications

• Voltage: 110V AC
• Compatible with brushless motor systems
• Includes VFC orifice and look-up table for flow rate determination
• NIST traceable calibration certification
• Operating flow range: 39-60 ft³/min for TSP collection

Compatibility

The TE-10557TSP-BL is designed specifically for TSP high volume air samplers equipped with 110-volt brushless motors. This controller is not compatible with brush-style motor systems — for those applications, use the standard TE-10557TSP. For 220-volt brushless systems, specify TE-10557TSPXBL. The VFC includes the calibrated orifice assembly and comprehensive look-up table for accurate flow rate calculations.

EPA Compliance

This VFC controller supports EPA compliance monitoring under the reference method for total suspended particulate matter determination specified in 40 CFR Part 50, Appendix B. The TSP reference method requires high-volume sampling at 40-60 cubic feet per minute with constant flow rate control throughout the 24-hour sampling period. The TE-10557TSP-BL provides the precise flow control necessary for 40 CFR Part 50, Appendix B compliance.

Installation and Maintenance

Installation requires proper integration with the sampler's flow measurement system and pressure recording equipment. The included look-up table provides flow rate values corresponding to measured pressure differentials across the orifice. Regular verification of orifice calibration is recommended following EPA guidelines for flow rate transfer standards. The VFC system can be paired with either 7-day mechanical timers or EPA-recommended digital timing systems.