1. Produktet er slutview
The BTMETER BT-846A is a professional HVAC anemometer designed for accurate measurement of wind velocity, air flow (CFM/CMM), and temperature. It features a separated, extendable wind sensor for flexible measurements and a large backlit LCD display for clear readings. This device is suitable for HVAC troubleshooting, air flow balancing, and various industrial or educational applications requiring precise air movement data.

Figure 1: BTMETER BT-846A Anemometer with its detachable vane sensor.
2. Pakkens indhold
Before use, please verify that all items are present and in good condition. If any items are missing or damaged, contact customer support.
- 1 x BTMETER BT-846A Anemometer Main Unit
- 1 x Detachable Vane Sensor
- 1 x USB Cable (for sensor connection)
- 1 x 9V batteri
- 1 x lille skruetrækker
- 1 x brugsanvisning
- 1 x Carrying Storage Case

Figure 2: Contents of the BTMETER BT-846A package.
3. Opsætning
3.1 Batteriinstallation
- Find batteridækslet på bagsiden af hovedenheden.
- Use the provided small screwdriver to unscrew the two screws securing the battery cover.
- Fjern batteridækslet.
- Connect the included 9V battery to the battery clips, ensuring correct polarity.
- Carefully place the battery into the compartment, ensuring the wires are not pinched.
- Replace the battery cover and secure it with the two screws.

Figur 3: Bagside view of the anemometer, showing the battery compartment and tripod mounting hole.
3.2 Connecting the Vane Sensor
- Locate the USB port on the side of the main unit, protected by a rubber cover.
- Carefully open the rubber cover.
- Connect the USB plug of the vane sensor cable into the USB port of the main unit.
- Sørg for en sikker forbindelse.

Figure 4: Connecting the vane sensor to the main unit via the USB cable.
4. Betjeningsvejledning
4.1 Tænd/sluk
Tryk og hold på MAGT button (labeled with a circle and vertical line) to turn the device on or off. The device will automatically power off after 5 minutes of inactivity to conserve battery life.
4.2 Measuring Wind Velocity and Temperature
- Sørg for, at vingesensoren er tilsluttet.
- Point the vane sensor into the air flow you wish to measure. The display will show real-time wind velocity and temperature readings.
- To change wind velocity units (m/s, km/h, ft/min, knots, mph), press the ENHED knap.
- To switch temperature units between Celsius (°C) and Fahrenheit (°F), press the ° C / ° F knap.

Figure 5: Measuring wind velocity and temperature with the anemometer.
4.3 Measuring Air Flow (CFM/CMM)
To measure air flow, you need to input the cross-sectional area of the duct or vent.
- Tryk på VEL/FLOW button to enter CFM/CMM mode.
- Tryk på ENHED button to select between FT² (for CFM) or M² (for CMM).
- Tryk på SAMPLE AREA button to input the cross-sectional area. Use the arrow keys to adjust the value and OPTION ENTER for at bekræfte.
- Once the area is set, the device will display the air volume in CFM or CMM.
Video 1: Demonstration of how to measure CFM on the BTMETER BT-846A.
4.4 Data Hold, Max/Min/Avg Readings
- Tryk på HOLDE knappen for at fryse den aktuelle aflæsning på displayet. Tryk igen for at slippe.
- Tryk på MAX/MIN button to cycle through Maximum, Minimum, and Average wind velocity/flow readings.
4.5 Baggrundslys
Tryk på LYS button to turn the display backlight on or off. The backlight will automatically turn off after a short period to save battery life.
4.6 Dataoptagelse og pc-tilslutning
The device can record up to 600 groups of wind data. To utilize this feature and connect to a PC for real-time measurement or data download, use the provided USB cable and software (available via CD or download link).
- Trykke REC to start/stop data recording.
- Trykke LÆSE til view registrerede data.
- Connect the main unit to your PC using the USB cable. Install the provided software to access recorded data and real-time measurements.
5. Vedligeholdelse
- Rensning: Tør enheden af med en blød, tør klud. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Opbevaring: Store the anemometer in its carrying case in a dry, cool environment when not in use for extended periods. Remove the battery if storing for a long time to prevent leakage.
- Udskiftning af sensor: The separated wind speed sensor can be replaced if it becomes damaged, extending the service life of the main unit. Contact customer support for replacement parts.
6. Fejlfinding
- Enheden tændes ikke: Kontroller, om 9V-batteriet er korrekt installeret og har tilstrækkelig opladning. Udskift om nødvendigt.
- Unøjagtige aflæsninger: Ensure the vane sensor is clean and free from obstructions. Verify that the correct measurement units and cross-sectional area (for CFM/CMM) are selected.
- Problemer med skærm: If the display is blank or shows erratic readings, try replacing the battery. Ensure the sensor cable is securely connected.
- Backlight turns off too quickly: This is a design feature to conserve battery. Press the LIGHT button to reactivate the backlight.
- Problemer med pc-forbindelse: Ensure the USB cable is properly connected to both the anemometer and the computer. Verify that the software is correctly installed.
7. Specifikationer
| Feature | Specifikation |
|---|---|
| Mærke | BTMETER |
| Modelnummer | BT-846A |
| Vindhastighedsområde | 0.001~100 mph (0.3~45 m/s) |
| Vindhastighedsnøjagtighed | ±3% ±0.2 aflæsning |
| Vindhastighedsopløsning | 0.001 m/s |
| Wind Flow Range (CFM) | 0-999900 ft³/min |
| Wind Flow Range (CMM) | 0-999900 m³/min |
| Luftstrømsområde | 0.001-9999 ft² |
| Temperaturområde | 32.0-113.0 °F (0-45 °C) |
| Temperatur nøjagtighed | ± 1 ° C (± 1.8 ° F) |
| Temperaturopløsning | 0.1 ° C / ° F |
| Data Record Capacity | 600 grupper |
| Strømkilde | 1 x 9V batteri (inkluderet) |
| Automatisk sluk | Efter 5 minutters inaktivitet |
| Dimensioner (L x B x H) | 3.4 x 1.5 x 6.5 tommer |
| Varens vægt | 1.65 pund |
| Materiale | Acrylonitril Butadien Styren (ABS) |
8. Garanti og support
The BTMETER BT-846A Anemometer comes with a 12 måneders garanti for any quality problems. For technical support, warranty claims, or replacement parts, please contact BTMETER customer service through their official webwebstedet eller forhandleren, hvor produktet blev købt.