Dwyer Instruments 8904 | Integral vane thermo-anemometer
A compact vane anemometer measuring air velocity and temperature simultaneously, with min/max/average logging and two-hour data averaging for HVAC balancing, energy audits, and general air flow inspections. Free UAE shipping.
Request a quote in under a minute - call +971 6 5436933.
Part No. 8904 | Air Velocity Range: 80-5900 ft/min (0.4-30 m/s), ±2%
The Dwyer Model 8904 provides technicians with fast air velocity and temperature measurements in a compact handheld instrument, without the need to manage a detachable probe. Its integral 2-7/8" vane measures air velocity from 80 to 5900 ft/min (0.4-30 m/s) with ±2% of reading accuracy and a 1-second response time.
A built-in temperature sensor measures external temperature from 14-122°F (-10 to 50°C). The 1.3" display supports selectable air velocity units including mph, km/hr, knots, ft/min, and m/sec.
Data-hold, minimum, maximum, and average functions help technicians capture stable measurements in turbulent duct airflow. The 8904 can also store and average data over a two-hour period, making it suitable for longer HVAC balancing and energy-audit sessions.
An RS-232 interface allows measurement results to be exported to a PC. The unit operates for approximately 100 hours on the included 9V battery and comes with a carrying case and instruction manual.
Ready to order the Dwyer 8904? Speak to our team. Call +971 6 5436933.
Key Benefits
- Integral 2-7/8" vane measures air velocity and temperature simultaneously
- 80-5900 ft/min (0.4-30 m/s) air velocity range with ±2% accuracy
- 1-second response time for quick air velocity measurements
- Data-hold plus minimum, maximum, and average functions
- Two-hour data averaging for extended HVAC balancing and energy audits
- RS-232 interface for PC data export
- Approximately 100-hour battery life
- Carrying case and instruction manual included
Who This Product Is Best For
- HVAC technicians performing air balancing and ventilation inspections
- Energy auditors conducting building and air flow assessments
- Maintenance teams checking duct air velocity and temperature
- Contractors who prefer an integral-vane anemometer without a separate probe
How to Use
- Power on the Dwyer 8904 and select the required air velocity unit.
- Position the integral vane in the air stream being measured.
- Use the data-hold function to capture a stable reading when airflow is turbulent.
- Use minimum, maximum, average, or two-hour averaging functions for extended surveys.
- Export stored measurement results to a PC through the RS-232 interface when the survey is complete.
Frequently Asked Questions
What is the air velocity range of the Dwyer 8904?
The 8904 measures air velocity from 80 to 5900 ft/min (0.4 to 30 m/s) with ±2% of reading accuracy.
Does the 8904 measure temperature too?
Yes. It measures external temperature from 14-122°F (-10 to 50°C) alongside air velocity.
What size is the integral vane?
The 8904 has a 2-7/8" integral vane.
How long does the battery last?
The included 9V alkaline battery provides approximately 100 hours of operation.
Can the 8904 average data over time?
Yes. The instrument can store and average data over a two-hour period.
Can readings be exported to a computer?
Yes. The 8904 includes an RS-232 interface for transferring results to a PC.
What's included with the 8904?
The supplied package includes the meter, a 9V battery, carrying case, and instruction manual.
Does GeneralTech Shop deliver the 8904 across the UAE?
Yes. Call +971 6 5436933 and our team will confirm delivery availability and timelines for your emirate.
Is a calibration certificate available for the 8904?
Calibration and certification availability should be confirmed with the GeneralTech Shop team when placing your order.
For pricing or to place an order, contact GeneralTech Shop. Call +971 6 5436933.
