TE-WILBUR Low Volume PM2.5 and PM10  FRM Sampler

Low Volume FRM Sampler
FRM low volume ambient particulate sampler

The Tisch Environmental TE-Wilbur is the most advanced low volume air sampler system in the industry. The TE-Wilbur can be configured for TSP, PM10, PM2.5, PM1 as well as any other particulate separation device with a flow rate between 1-25 SLPM. Featuring modern, industrially hardened components paired with innovative design and state of the art manufacturing practices, the TE-Wilbur is the future of particulate collection. The TE-Wilbur is ideal for Environmental Monitoring, Fence Line Monitoring and Industrial Monitoring. The TE-Wilbur is designed to operate in any environment and is set up for quick and easy deployment. The TE-Wilbur exceeds all performance specifications set forth by the USEPA for low-volume particulate collection.

The TE-Wilbur low volume air samplers user interface is a full-color 5.7″ touchscreen which utilizes intuitive control.  The touchscreen was developed specifically to satisfy the recommendations of instrumentation operators. The TE-Wilbur features easy to access menus, step by step calibration and on screen status alerts. The TE-Wilbur control is provided by our industrialized programmable logic controller (PLC) whose programming is USB downloadable and MODBUS compatible. Volumetric flow is controlled through an integrated mass flow meter and on-board ambient temperature and pressure sensors. Filter set-up and exchange is achieved through the Tisch-designed filter exchange mechanism which allows easy one handed operation.  In addition, the filter exchange mechanism does not require continual adjustment to seal your filter against leaks. Data can be retrieved through any MODBUS compatible data acquisition system or can be easily downloaded and transported with your filter on a USB drive.

Why choose the TE-WILBUR?

Designed and manufactured in our ISO 9001:2008 registered facility, the TE-WILBUR is built using strict manufacturing guidelines to ensure repeatability and to eliminate manufacturing defects.
The TE-WILBUR utilizes a full color LCD touch screen user interface, a powerful PLC micro controller, a proprietary zero-adjust filter exchange mechanism, multi-lingual capability (English, Spanish, Chinese), MODBUS communications and remote control over Ethernet using any compatible browser.
With over 50 years of industry experience and a dedicated and highly trained support staff, Tisch Environmental is here to answer all of your questions and concerns.
With over 50 years of industry experience the TE-WILBUR was designed, developed produced and named to honor Mr. Wilbur P. Tisch our patriarch and the father to the founders of Tisch Environmental.


System Specifications

Particulate Size: TSP, PM10, PM2.5 PMc

Flow Range: 1-25 slpm

US EPA FRM Designation: RFPS-0714-216 PM10, RFPS-1014-219 PM2.5, RFPS1014-220 PMc

Sampling Interval: Preprogrammed USEPA 1 in 3, 1 in 6, 1 in 12, 24hr sampling

Operating Temperature: -25°C to 50°C

Ambient Temp Sensor: PT100RTD, Accuracy +/-0.15°C, Resolution 0.01°C

Filter Temp Sensor: PT100RTD, Accuracy +/-0.15°C, Resolution 0.01°C

Barometric Pressure Sensor: Range 450 mmHg to 1238 mmHg, Accuracy +/- 10 mmHg

Motor: 24 volt dc Brushless Motor

Range: 0-25 Liters per Minute

Accuracy: +/- 3% of full scale

Repeatability: +/-1% of full scale

Resolution: .01 LPM

Power Requirements: 120/240VAC, 50/60Hz

Power Consumption: 40 watt (peak)

Optional: Solar

MODBUS: for gathering data into an acquisition system

USB: for data download of run time data and history data

RJ45 Ethernet: full Ethernet remote control

Optional Anemometer

Turning radius: 6”
Vane threshold: 1.2 mph
Transducer type: Magnetic reed switch, 20k ohm potentiometer
Measurement range: 0-99 mph
Accuracy: 0.5 mph or +/- 3%
Size: 12.5” H x 8” W
Mounting: 1” OD pipe
Weight: 3lbs.
Azimuth accuracy: +/- 3 degrees
Measurement range: 0–360-degree mechanical
Resolution: < 1 degrees
Operating temperature: -40 to 60 degrees C, 0-100% RH


  • Intuitive user interface cuts down on setup time.
  • Brushless motor reduces maintenance time.
  • Easy to follow step by step calibration procedure.
  • Programmable timer allows for flexible sampling schedules.
  • Zero-adjust filter exchange mechanism makes filter changes quick and easy.

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