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Measures velocity, temperature, relative humidity / calculates flow, wet bulb and dew point temperature with an articulated, telescopic probe / data logging.

The Apex2 Pro version offers the highest level of monitoring with flows to 5L/min. Featuring all the capabilities of the Standard and Plus models, the Apex2 Pro adds datalogging of flow, pressure and motion, aswell as programmable on and off timers. Remotely monitor and...

Ammonia (NH3) Module for TSI OmniTrak™ Solution.This product is only available in the US, Canada, United Kingdom, European Union, Switzerland, Norway and Australia. 

VOC-PID (ppb) Module for TSI OmniTrak™ Solution.This product is only available in the US, Canada, United Kingdom, European Union, Switzerland, Norway and Australia. 

The 7545 IAQ Meter simultaneously measures and data logs multiple parameters, including CO, CO2, temperature, humidity; and calculations are dew point, wet bulb temperature, and percent of outside air.

The Environmental Enclosure 8535 is a portable, weatherproof enclosure custom built to house DustTrak™ Aerosol Monitor units outdoors or in harsh industrial environments.

Quest™ SoundPro™ SE-DL Series Sound Level Meters come in a variety of models to meet your sound measurement needs. Several models feature octave band analysis, giving you the ability to conduct environmental noise monitoring and noise control evaluation.