1. Introdución
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. Características do produto
- Deseño compacto e portátil: 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.
- Construción duradeira: Rugged design ensures reliable performance in field and laboratory settings.
- Apagado automático: 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. Contido do paquete
Verificar que todos os elementos estean presentes e en bo estado:
- Extech UV505 Pocket UV-AB Light Meter
- Two AAA batteries (pre-installed or included separately)
- Bolsa protectora
4. Identificación de compoñentes

Figura 1: Fronte 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. Configuración
5.1 Instalación da batería
- Localice o compartimento das baterías na parte traseira do medidor.
- Press the release button (if present) and slide open the battery cover.
- Introduza dúas pilas AAA, asegurándose de manter a polaridade correcta (+ e -).
- Replace the battery cover and ensure it clicks securely into place.
6. Instrucións de funcionamento
6.1 Encendido/apagado
- 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 Tomar unha medida
- Encender o contador.
- 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 Función cero
- 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 Selección da unidade
- 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 Retención de datos
- Press the 'HOLD' button (often marked 'H') to freeze the current reading on the display.
- Prema "HOLD" de novo para liberar a lectura e volver á medición en directo.
Función 6.6 Mín/Máx
- 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 Retroiluminación
- Press the backlight button (light bulb icon) to illuminate the LCD display for better visibility in low-light conditions.
- Prémao de novo para apagar a retroiluminación.
7. Mantemento
7.1 Limpeza
- Limpar a superficie c do medidorasing cun suave, damp pano. Non use produtos de limpeza ou disolventes abrasivos.
- 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 Almacenamento
- Cando non as use durante períodos prolongados, retire as pilas para evitar fugas.
- Store the meter in its protective pouch in a cool, dry place, away from direct sunlight and extreme temperatures.
7.3 Substitución da batería
- When the low battery indicator appears on the display, replace the batteries as described in Section 5.1.
8 Solución de problemas
- O medidor non se acende: Comprobe a instalación das baterías e asegúrese de que as baterías estean novas.
- Lecturas inexactas: Ensure the sensor is clean and unobstructed. Perform a ZERO calibration. Verify correct unit selection.
- A pantalla é tenue ou parpadea: Substitúe as pilas.
9. Especificacións
| Especificación | Detalle |
|---|---|
| Fabricante | Extech |
| Número de peza | UV505 |
| Peso do elemento | 3.2 onzas |
| Dimensións do produto | 1.9 x 1 x 5.2 polgadas |
| Número de modelo do artigo | UV505 |
| Baterías | 2 pilas AAA necesarias (incluídas) |
| Tipo de pila de batería | Alcalino |
| Sistema de Medición | Métrica |
| Compoñentes incluídos | Meter, two AAA batteries, and a pouch |
| Data de primeira dispoñibilidade | 12 de xuño de 2018 |
10. Garantía e soporte
For warranty information or technical support, please refer to the official Extech websitio web ou póñase en contacto co seu departamento de atención ao cliente. Garde o recibo de compra como proba de compra para calquera reclamación de garantía.





