![]() The included WolfSense® PC software enables simple download, analysis, graphing and simple report generation. Reports are proficiently generated from information in the field. Attach extensive audio notes with the built-in voice recorder. ![]() Notes are easily attached to data files on-site for efficient, reliable documentation. The meter also provides powerful annotation capabilities. The Zephyr III displays and data-logs readings, logging over time at user-selectable intervals or as instantaneous “snap-shot” logs. Measuring temperature and %RH with an optional plug-in probe (direct connect or with handle and 1m cable).05 to 300m/s, 10 to 6000fpm), low-range airflow measurements. Alternatively connect a telescoping, articulating hotwire anemometer for exceptionally accurate (+/-2% of reading from. ![]() Measuring static pressure, air velocity and volumetric airflow with a pitot static tube.Determining pressure drop across coils, diffusers, registers, fans, orifice plates.negative pressure over time for adjacent zones such as classroom/kitchen, childcare area/parking garage, general office/laboratory. Monitoring/logging positive pressure vs.Verifying positive pressure in occupied areas during local area construction.are not transported in unanticipated ways between spaces. Investigating pollutant pathways to confirm gasses, toxins, viruses, etc.Testing filter performance, the most reliable way to rate dirt loading on the filter or potential duct leakage (especially important as filters with higher MERV ratings are installed in response to COVID-19).This combination of unequaled low-end sensitivity, and wide-range measurement capability, makes the Zephyr III ideal for applications including: The Zephyr III does exactly this, auto-zeroing both sensors every 2 minutes. But for long-term monitoring, a meter must re-zero automatically for the readings to be reliable over time. Most low-range digital manometers rely on manual zeroing ahead of each reading. A further issue for low-end measurements, such as determining pollutant pathways, is that sensor drift at these minute pressures may be significant over a matter of only minutes. GrayWolf solves this by incorporating a 250.0 Pa (1.000“H2O) range sensor and a 10KPa (40.0“H2O) sensor on the same board, smoothly auto-ranging from one sensor to the other dependent on the detected pressures. For many Indoor Air Quality (IAQ), Heating Ventilation Air Conditioning (HVAC), Industrial Hygiene (IH) or other applications, extremely low-end ∆P resolution is critical, yet a wide measurement range is highly desirable. There is a trade-off between range and low-end resolution with commercially available ∆P sensors. Building on decades of experience with earlier Zephyr models, the Zephyr III achieves the best accuracy, widest range, and adds many new features compared to previous models. By combining auto-ranging and auto-zeroing technology, this handheld digital micromanometer offers superb low-end sensitivity, yet an exceptionally broad measurement range. GrayWolf Sensing Solutions introduces an extremely accurate new differential air pressure (∆P) meter.
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