1. Introducción
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 del producto
- Diseño compacto y 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.
- Construcción duradera: 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. Contenido del paquete
Verifique que todos los artículos estén presentes y en buen estado:
- Extech UV505 Pocket UV-AB Light Meter
- Two AAA batteries (pre-installed or included separately)
- Bolsa protectora
4. Identificación de componentes

Figura 1: Frente 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 de la batería
- Localice el compartimiento de la batería en la parte posterior del medidor.
- Press the release button (if present) and slide open the battery cover.
- Inserte dos pilas AAA, asegurándose de la polaridad correcta (+ y -).
- Replace the battery cover and ensure it clicks securely into place.
6. Instrucciones de funcionamiento
6.1 Encendido y 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 Realización de una medición
- Encienda el medidor.
- 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 selección de unidad
- 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.
- Presione 'HOLD' nuevamente para liberar la lectura y regresar a la medición en vivo.
6.6 Función 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 Luz de fondo
- Press the backlight button (light bulb icon) to illuminate the LCD display for better visibility in low-light conditions.
- Presiónelo nuevamente para apagar la luz de fondo.
7. Mantenimiento
7.1 Limpieza
- Limpie el medidor casing con un suave, damp Paño. No utilice limpiadores abrasivos ni disolventes.
- 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 Almacenamiento
- Cuando no se utilice durante períodos prolongados, retire las 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 Reemplazo de batería
- Cuando aparezca el indicador de batería baja en la pantalla, reemplace las baterías como se describe en la Sección 5.1.
8. Solución de problemas
- El medidor no se enciende: Verifique la instalación de la batería y asegúrese de que las baterías estén nuevas.
- Lecturas inexactas: Ensure the sensor is clean and unobstructed. Perform a ZERO calibration. Verify correct unit selection.
- La pantalla está oscura o parpadea: Reemplace las baterías.
9. Especificaciones
| Especificación | Detalle |
|---|---|
| Fabricante | Extec |
| Número de pieza | UV505 |
| Peso del artículo | 3.2 onzas |
| Dimensiones del producto | 1.9 x 1 x 5.2 pulgadas |
| Número de modelo del artículo | UV505 |
| Baterías | Se requieren 2 pilas AAA (incluidas) |
| Tipo de celda de la batería | Alcalino |
| Sistema de medición | Métrico |
| Componentes incluidos | Meter, two AAA batteries, and a pouch |
| Fecha de primera disponibilidad | 12 de junio de 2018 |
10. Garantía y soporte
For warranty information or technical support, please refer to the official Extech webSitio web o contacte con el departamento de atención al cliente. Conserve su recibo de compra como comprobante para cualquier reclamación de garantía.





