1. Prodotto finitoview
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. Contenuto della confezione
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)
- Batteria 1 x 9V
- 1 x piccolo cacciavite
- 1 x Manuale di istruzioni
- 1 x Carrying Storage Case

Figure 2: Contents of the BTMETER BT-846A package.
3. Impostazione
3.1 Installazione della batteria
- Individuare il coperchio del vano batterie sul retro dell'unità principale.
- Use the provided small screwdriver to unscrew the two screws securing the battery cover.
- Rimuovere il coperchio della batteria.
- 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.

Figura 3: Posteriore 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.
- Garantire una connessione sicura.

Figure 4: Connecting the vane sensor to the main unit via the USB cable.
4. Istruzioni per l'uso
4.1 Accensione/spegnimento
Premere e tenere premuto il tasto ENERGIA 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
- Ensure the vane sensor is connected.
- 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 UNITÀ pulsante.
- To switch temperature units between Celsius (°C) and Fahrenheit (°F), press the ° C / ° F pulsante.

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.
- Premere il tasto VEL/FLUSSO button to enter CFM/CMM mode.
- Premere il tasto UNITÀ button to select between FT² (for CFM) or M² (for CMM).
- Premere il tasto SAMPLE AREA button to input the cross-sectional area. Use the arrow keys to adjust the value and OPZIONE INVIO per confermare.
- 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
- Premere il tasto PRESA pulsante per congelare la lettura corrente sul display. Premere di nuovo per rilasciare.
- Premere il tasto Massimo/minimo button to cycle through Maximum, Minimum, and Average wind velocity/flow readings.
4.5 Retroilluminazione
Premere il tasto LEGGERO 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 Data Recording and PC Connection
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).
- Premere RICORDA to start/stop data recording.
- Premere LEGGERE A view dati registrati.
- Connect the main unit to your PC using the USB cable. Install the provided software to access recorded data and real-time measurements.
5. Manutenzione
- Pulizia: Pulire il dispositivo con un panno morbido e asciutto. Non utilizzare detergenti abrasivi o solventi.
- Magazzinaggio: 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.
- Sostituzione del sensore: 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. Risoluzione Dei Problemi
- Il dispositivo non si accende: Controllare che la batteria da 9 V sia installata correttamente e abbia una carica sufficiente. Sostituirla se necessario.
- Letture imprecise: 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.
- Problemi di visualizzazione: If the display is blank or shows erratic readings, try replacing the battery. Ensure the sensor cable is securely connected.
- La retroilluminazione si spegne troppo velocemente: This is a design feature to conserve battery. Press the LIGHT button to reactivate the backlight.
- Problemi di connessione al PC: Ensure the USB cable is properly connected to both the anemometer and the computer. Verify that the software is correctly installed.
7. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Marca | BTMETRO |
| Numero di modello | Modello BT-846A |
| Intervallo di velocità del vento | 0.001~100 mph (0.3~45 m/s) |
| Wind Velocity Accuracy | ±3% ±0.2 reading |
| Wind Velocity Resolution | 0.001 metri al secondo |
| Wind Flow Range (CFM) | 0-999900 piedi³/min |
| Wind Flow Range (CMM) | 0-999900 m³ / min |
| Area del flusso d'aria | 0.001-9999 piedi quadrati |
| Intervallo di temperatura | 32.0-113.0 °F (0-45 °C) |
| Precisione della temperatura | ±1 °C (±1.8 °F) |
| Risoluzione della temperatura | 0.1°C/°F |
| Capacità di registrazione dei dati | 600 gruppi |
| Fonte di alimentazione | 1 batteria da 9 V (inclusa) |
| Spegnimento automatico | Dopo 5 minuti di inattività |
| Dimensioni (L x P x A) | 3.4 x 1.5 x 6.5 pollici |
| Peso dell'articolo | 1.65 libbre |
| Materiale | Acrilonitrile Butadiene Stirene (ABS) |
8. Garanzia e supporto
The BTMETER BT-846A Anemometer comes with a Garanzia di 12 mesi for any quality problems. For technical support, warranty claims, or replacement parts, please contact BTMETER customer service through their official websito o rivenditore presso cui è stato acquistato il prodotto.