Dwyer Instruments 8904 | Integral vane thermo-anemometer
Genuine Dwyer Instruments 8904 integral vane thermo-anemometer in stock at General Tech Services LLC, Saudi Arabia, with free Saudi Arabia shipping. The Dwyer 8904 measures air velocity and temperature together in a compact handheld unit, with data hold, min/max/average functions and RS-232 PC data export. Request a quote in under a minute – call +966 569 289 544.
Product Overview
The Dwyer 8904 is a compact integral vane thermo-anemometer designed for quick air velocity and temperature measurements at grilles, diffusers, fan outlets and other HVAC air-moving points. Its 2-7/8-inch integral vane is built directly into the instrument, eliminating the need to carry a separate probe or cable.
The meter measures air velocity from 80 to 5900 ft/min (0.4-30 m/s) with ±2% accuracy. It simultaneously measures air temperature from -10 to 50°C (14 to 122°F), providing two key readings for HVAC testing and balancing in one handheld instrument.
The Dwyer 8904 includes data hold for freezing a displayed measurement, along with minimum, maximum and average functions for monitoring changing airflow. A two-hour averaging function helps provide a more representative measurement when airflow fluctuates over an extended observation period.
Velocity response is approximately 1 second, while temperature response is approximately 60 seconds. The 34 x 40 mm display provides a clear view of measurements, and selectable velocity units include mph, km/h, knots, ft/min and m/s.
For documentation and reporting, the 8904 provides an RS-232 serial interface operating at 2400 bps for PC data export. The meter operates from a 9 V alkaline battery with approximately 100 hours of battery life. Weighing only 150 g, it is designed for portable field use and is supplied with a carrying case and manual.
Key Benefits
- Integral 2-7/8-inch vane eliminates the need for a separate probe
- Air velocity measurement from 0.4-30 m/s (80-5900 ft/min)
- ±2% air velocity accuracy
- Simultaneous air temperature measurement from -10 to 50°C
- Data hold, minimum, maximum and average functions
- Two-hour data averaging for longer airflow observations
- RS-232 serial interface for PC data export
- Selectable velocity units: mph, km/h, knots, ft/min and m/s
- Approximately 100 hours of operation from a 9 V alkaline battery
- Lightweight 150 g handheld design
- Carrying case and manual included
- Genuine Dwyer stock with free Saudi Arabia shipping
Who This Product Is Best For
- HVAC technicians checking airflow at grilles, diffusers and fan outlets
- Balancing engineers requiring a compact handheld meter for airflow verification
- Energy auditors recording airflow and temperature during field assessments
- Facility teams checking fan, filter and air distribution performance
- Contractors who need a portable anemometer with PC data export
How to Use / How It Works
- Switch on the Dwyer 8904 and select the required air velocity unit.
- Hold the integral vane square to the airflow at the grille, diffuser or outlet being tested.
- Use data hold, minimum/maximum/average or two-hour averaging according to the measurement requirement.
- Record the results locally or export data to a PC through the RS-232 serial interface for documentation.
Frequently Asked Questions
What is the air velocity range of the Dwyer 8904?
The Dwyer 8904 measures air velocity from 80 to 5900 ft/min (0.4-30 m/s) with ±2% accuracy.
Does the Dwyer 8904 measure temperature?
Yes. It measures air temperature from -10 to 50°C (14 to 122°F) simultaneously with air velocity.
Does it use a detachable probe?
No. The 8904 uses an integral 2-7/8-inch vane built into the handheld meter.
What data functions are available?
The meter provides data hold, minimum, maximum and average readings, plus two-hour data averaging.
Can readings be exported to a computer?
Yes. The Dwyer 8904 includes an RS-232 serial interface operating at 2400 bps for PC data export.
How long does the battery last?
The 9 V alkaline battery provides approximately 100 hours of operation.
Which air velocity units can be selected?
Velocity can be displayed in mph, km/h, knots, ft/min or m/s.
What is included with the meter?
The Dwyer 8904 is supplied with a carrying case and manual.
Request a Quote Today
Get the genuine Dwyer 8904 integral vane thermo-anemometer with free shipping anywhere in Saudi Arabia.
General Tech Services LLC — Genuine Dwyer Products, KSA
Call +966 569 289 544 | www.generaltechshop.sa
