The CEM DT-857 is an advanced "Hot Wire" anemometer designed to provide highly accurate measurements of air velocity and airflow. With its extendable telescopic probe, the device is the ideal choice for inspecting HVAC ducts and small, hard-to-reach openings that traditional devices cannot access.
Key Features:
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Hot Wire Technology: Offers exceptional accuracy in measuring very low air velocities that fan-type anemometers cannot detect.
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Telescopic Probe: A slim, extendable probe that facilitates measurements inside ducts and high ventilation openings.
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Comprehensive Measurements: Simultaneously measures air velocity, air volume flow (CFM/CMM), and air temperature.
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Dual LCD Display: A large, backlit display allows for clear reading of both air velocity and temperature.
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Smart Functions: Includes MAX/MIN recording, average calculation (AVG), and data hold.
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Multiple Measurement Units: Supports conversion between (m/s, km/h, ft/min, MPH, Knots).
Technical Specifications (Model DT-857):
| Air Velocity Range |
0.1 ~ 20.0 m/s |
| Air Flow Range |
0 ~ 999,900 CFM / CMM |
| Temperature Range |
0.0 ~ 50.0 °C (32 ~ 122 °F) |
| Resolution |
0.01 m/s for air velocity | 0.1° for temperature |
| Sensor Type |
Glass thermistor and highly sensitive hot wire |
| Power Source |
9V battery or 5V USB cable |
Ideal Applications:
- Balancing and inspecting airflow in central HVAC systems.
- Measuring the efficiency of filters and fans in laboratories and research rooms.
- Testing air velocity in biological safety cabinets and industrial ventilation openings.
- Routine maintenance of heating and ventilation systems in large buildings.
