1. Introducció
The Extech UV505 is a compact, portable UV-AB light meter designed for measuring ultraviolet radiation from both natural and artificial light sources. This device is suitable for various applications including outdoor UV exposure assessment, medical testing, laboratory research, industrial quality control, educational purposes, electronics, and forensic investigations. It features a backlit display, a cosine-corrected sensor for accurate readings, two selectable measurement ranges, a zero adjustment function, data hold, and an automatic power-off feature to conserve battery life.
2. Característiques del producte
- Disseny compacte i portàtil: Easily fits in a hand or pocket for convenient on-the-go monitoring in various environments.
- UVA and UVB Measurement: Dual-sensor technology enables simultaneous and accurate tracking of both UVA and UVB light intensity.
- Data Capture Functions: Includes Peak Hold, Min/Max, and real-time readings to analyze fluctuations and critical UV peaks.
- Pantalla LCD retroiluminada: Large, easy-to-read screen with backlight for clear visibility in diverse lighting conditions.
- Construcció duradora: Rugged design ensures reliable performance in field and laboratory settings.
- Apagat automàtic: Automatically shuts off to preserve battery life during extended use.
- Cosine Corrected Sensor: Provides accurate measurements regardless of the angle of incidence of the UV light.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents i en bon estat:
- Extech UV505 Pocket UV-AB Light Meter
- Two AAA batteries (pre-installed or included separately)
- Bossa protectora
4. Identificació de components

Figura 1: Frontal view of the Extech UV505 Pocket UV-AB Light Meter, showing the UV sensor, LCD display, and control buttons.

Figure 2: The Extech UV505 meter being held in a hand, demonstrating its portable size and outdoor usability.
The Extech UV505 features a UV sensor at the top, a large LCD display in the center, and several control buttons below the display. The main power button is typically orange and centrally located. Other buttons include ZERO, UNIT, and a backlight button (often indicated by a light bulb icon) and a HOLD button (indicated by 'H'). The battery compartment is located on the rear of the device.
5. Configuració
5.1 Instal·lació de la bateria
- Localitzeu el compartiment de la bateria a la part posterior del mesurador.
- Press the release button (if present) and slide open the battery cover.
- Introduïu dues piles AAA, assegurant-vos de la polaritat correcta (+ i -).
- Replace the battery cover and ensure it clicks securely into place.
6. Instruccions de funcionament
6.1 Encès/Apagat
- To power on the meter, press the orange power button.
- To power off the meter, press and hold the orange power button until the display turns off. The meter also features an auto power-off function after a period of inactivity.
6.2 Prendre una mesura
- Enceneu el comptador.
- Point the UV sensor directly towards the UV light source you wish to measure.
- Read the UV intensity value displayed on the LCD screen.
6.3 Zero Function
- To ensure accurate readings, especially in low UV environments, use the ZERO function.
- Cover the UV sensor completely to block all light.
- Press the 'ZERO' button. The display should show '0' or a very small value.
6.4 Selecció d'unitats
- Press the 'UNIT' button to cycle through available measurement units, typically µW/cm² (microwatts per square centimeter) and mW/cm² (milliwatts per square centimeter).
6.5 Retenció de dades
- Press the 'HOLD' button (often marked 'H') to freeze the current reading on the display.
- Press 'HOLD' again to release the reading and return to live measurement.
6.6 Min/Max Function
- While measuring, press the 'MIN/MAX' button (or similar, depending on model) to display the minimum or maximum UV intensity recorded since the function was activated.
- Cycle through Min, Max, and current readings by pressing the button repeatedly.
- To clear Min/Max memory, typically press and hold the 'MIN/MAX' button, or power cycle the device.
6.7 Llum de fons
- Press the backlight button (light bulb icon) to illuminate the LCD display for better visibility in low-light conditions.
- Press it again to turn off the backlight.
7. Manteniment
7.1 Neteja
- Netegeu la c del comptadorasing amb un suau, damp tela. No utilitzeu netejadors abrasius ni dissolvents.
- Keep the UV sensor clean and free from dust or debris to ensure accurate readings. Use a soft brush or compressed air if necessary.
7.2 Emmagatzematge
- Quan no les feu servir durant períodes prolongats, traieu les piles per evitar fuites.
- Store the meter in its protective pouch in a cool, dry place, away from direct sunlight and extreme temperatures.
7.3 Substitució de la bateria
- Quan aparegui l'indicador de bateria baixa a la pantalla, substituïu les piles tal com es descriu a la secció 5.1.
8. Solució De Problemes
- El mesurador no s'encén: Comproveu la instal·lació de les piles i assegureu-vos que les piles siguin noves.
- Lectures inexactes: Ensure the sensor is clean and unobstructed. Perform a ZERO calibration. Verify correct unit selection.
- La pantalla és tènue o parpelleja: Substituïu les piles.
9. Especificacions
| Especificació | Detall |
|---|---|
| Fabricant | Extech |
| Número de part | UV505 |
| Pes de l'article | 3.2 unces |
| Dimensions del producte | 1.9 x 1 x 5.2 polzades |
| Número de model de l'article | UV505 |
| Bateries | Necessites 2 piles AAA (incloses) |
| Tipus de pila de bateria | Alcalí |
| Sistema de mesura | mètrica |
| Components inclosos | Meter, two AAA batteries, and a pouch |
| Data de primera disponibilitat | 12 de juny de 2018 |
10. Garantia i Suport
For warranty information or technical support, please refer to the official Extech weblloc web o poseu-vos en contacte amb el seu departament d'atenció al client. Conserveu el rebut de compra com a comprovant de compra per a qualsevol reclamació de garantia.





