Benetech GM8905 Digital Laser Tachometer User Manual

Introducció

This manual provides instructions for the safe and effective operation of the Benetech GM8905 Digital Laser Tachometer. This device is designed for non-contact measurement of rotational speed (RPM) using a laser, offering precise readings for various industrial and mechanical applications.

Descripció de la imatge: Un front view of the Benetech GM8905 Digital Laser Tachometer, showing its black casing, LCD display with "9999.9 RPM" shown, and orange control buttons for MEM, Power, and Light. A yellow laser warning symbol is visible at the top.

Informació de seguretat

Please read all safety warnings and instructions carefully before using this product. Failure to follow these instructions may result in injury or damage to the device.

• Seguretat làser: Do not look directly into the laser beam. Laser radiation can cause eye damage. Do not point the laser at people or animals.
• Ús adequat: Use the device only as described in this manual. Any unauthorized modifications or repairs will void the warranty and may pose safety risks.
• Condicions ambientals: Keep the device away from water, high humidity, and extreme temperatures. Do not operate in explosive atmospheres.
• Manipulació de la bateria: Desfeu-vos de les piles correctament d'acord amb la normativa local. No barregeu piles velles i noves ni piles de diferents tipus.

Producte acabatview

The Benetech GM8905 is a portable, non-contact digital tachometer designed for accurate RPM measurements. It features a large LCD display, memory function, and a precise laser pointer for easy targeting.

Image description: The Benetech GM8905 Tachometer laid out with its instruction manual, two AAA batteries, reflective tape, and product packaging.

Components

• Emissor làser: Projects the laser beam onto the target surface.
• Photoelectric Receiver: Detects the reflected laser light to calculate RPM.
• Pantalla LCD: Shows measurement readings, units, and status indicators.
• Botó MEM: Cycles through Maximum, Minimum, Average, and Last measurement values.
• Botó d'encesa: Encén o apaga el dispositiu.
• Botó de llum: Activa o desactiva la retroiluminació de la pantalla.
• Compartiment de la bateria: Located at the rear, holds two 1.5V AAA batteries.

Configuració

1. Instal·lació de la bateria

1. Localitzeu la tapa del compartiment de la bateria a la part posterior del dispositiu.
2. Feu lliscar la coberta oberta.
3. Insert two 1.5V AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
4. Tanqueu bé la tapa del compartiment de la bateria.

Image description: The Benetech GM8905 Tachometer inside its packaging, alongside its instruction manual and two AAA batteries, indicating the items included for setup.

2. Applying Reflective Tape

For accurate non-contact measurements, a piece of reflective tape must be applied to the rotating object.

• Cut a small piece of the provided reflective tape (approximately 10-30mm long).
• Attach it to the rotating shaft, disk, or wheel where you intend to measure RPM. Ensure the tape is flat, smooth, and securely adhered to prevent detachment during rotation.
• The reflective tape provides a distinct target for the laser beam, allowing the tachometer to count rotations.

Instruccions de funcionament

1. Encès / apagat

Premeu el botó Poder botó () to turn the tachometer on. The LCD display will illuminate. To turn it off, press and hold the Poder button for approximately 2 seconds. The device also features an automatic shutdown function, turning off after 60 seconds of inactivity to conserve battery life.

2. Prendre una mesura

1. Ensure the reflective tape is properly applied to the rotating object.
2. Hold the tachometer firmly and point the laser beam towards the reflective tape on the rotating object. The laser emitter is located at the top front of the device.
3. Maintain a measuring distance between 50mm and 500mm (approximately 2 to 20 inches) for optimal accuracy.
4. The current RPM reading will be displayed on the LCD screen. Ensure the laser spot consistently hits the reflective tape for stable readings.

Image description: A side view of the Benetech GM8905 Tachometer, highlighting the laser emitter at the front, which projects the beam for RPM measurement.

3. Using Memory Functions (MAX/MIN/AVG/LAST)

During or after a measurement session, press the MEM botó () repeatedly to cycle through the stored measurement values:

• MÀXIM: Displays the maximum RPM recorded during the current measurement session.
• MIN: Displays the minimum RPM recorded during the current measurement session.
• AVG: Displays the average RPM calculated from the measurements taken.
• ÚLTIM: Displays the last measured RPM value before entering memory mode.

4. Llum de fons

Premeu el botó Llum botó () to turn the LCD backlight on or off. This feature improves visibility of the display in low-light conditions.

Manteniment

Neteja

Wipe the device with a soft, dry cloth. Do not use abrasive cleaners, solvents, or corrosive chemicals, as these can damage the casing or display. Keep the laser emitter and photoelectric receiver lenses clean and free of dust or debris to ensure accurate readings.

Canvi de bateria

When the low battery indicator appears on the display, replace the batteries promptly to ensure continued accurate readings. Refer to the "Battery Installation" section for detailed instructions.

Emmagatzematge

If the device will not be used for an extended period, remove the batteries to prevent leakage and potential damage. Store the tachometer in a cool, dry place, away from direct sunlight, extreme temperatures, and high humidity.

Resolució de problemes

Especificacions

The following table outlines the technical specifications of the Benetech GM8905 Digital Laser Tachometer.

Image description: A detailed table listing the technical specifications of the Benetech GM8905 Tachometer, including LCD display type, unit, range, resolution, precision, laser power, sampling ratio, measurement distance, time base, automatic shutdown, operation environment, storage environment, power supply, dimension, and weight.

Garantia i Suport

For warranty information or technical support regarding your Benetech GM8905 Digital Laser Tachometer, please refer to the documentation provided with your purchase or contact the retailer directly. Keep your purchase receipt as proof of purchase for any warranty claims.