Introducción
The Voltcraft SL-451 is a digital sound level meter designed for precise noise measurement and data logging. This device complies with IEC 61672-1 Class 2 standards, making it suitable for various professional applications. It features a robust housing with injected rubber protection, ensuring durability in challenging environments. The integrated data logger can store up to 32,000 measurements, which can be transferred to a PC via a USB interface for detailed analysis using the included software. An extendable microphone cable allows for flexible measurement in hard-to-reach areas.
Instrucciones de seguridad
Please read these safety instructions carefully before operating the device to ensure safe and proper use.
- No exponga el dispositivo a temperaturas extremas, luz solar directa o humedad alta.
- Avoid strong vibrations or mechanical shocks.
- Do not open the device housing; refer servicing to qualified personnel.
- Utilice únicamente la fuente de alimentación y los accesorios especificados.
- Mantenga el dispositivo fuera del alcance de los niños.
- Ensure the microphone is clean and free from obstructions for accurate readings.
Contenido del paquete
Verifique que todos los artículos estén presentes al desembalar:
- Voltcraft SL-451 Digital Sound Level Meter
- Microphone extension cable (3 meters)
- Cable USB
- CD de software para PC
- Adaptador de corriente
- Estuche de transporte
- Manual de usuario

Dispositivo terminadoview
Familiarize yourself with the main components of the SL-451.

- Micrófono: For sound detection.
- Pantalla LCD: Shows measurement values, settings, and status indicators.
- Botones de control: For power, mode selection, data hold, and other functions.
- Puerto USB: Para conexión a PC y transferencia de datos.
- Entrada de energía: Para fuente de alimentación externa.
- Compartimento de la batería: For battery installation.
Configuración
1. Encender el dispositivo
The SL-451 can be powered by batteries or an external power adapter.
Instalación de la batería:
- Abra la tapa del compartimento de la batería en la parte posterior del dispositivo.
- Inserte las pilas necesarias, respetando la polaridad correcta.
- Cierre bien la tapa del compartimento de la batería.
Potencia externa:
Connect the provided power adapter to the device's power input and then to a suitable power outlet.
2. Conexión del micrófono
The device comes with a detachable microphone and an extension cable.
- For direct use, ensure the microphone is securely attached to the main unit.
- For remote measurements, connect the microphone to one end of the 3-meter extension cable and the other end of the cable to the device's microphone input.
- Always use the foam windscreen on the microphone to minimize wind noise interference.
3. Instalación del software (para el registro de datos)
To utilize the data logging and analysis features, install the provided PC software.
- Inserte el CD del software en la unidad de CD/DVD de su computadora.
- Siga las instrucciones en pantalla para instalar el software.
- After installation, connect the SL-451 to your computer using the supplied USB cable.
- The software should automatically detect the device. If not, refer to the software's help documentation for troubleshooting connection issues.
Instrucciones de funcionamiento
1. Medición básica
- Presione el FUERZA para encender el dispositivo.
- The display will show the current sound level in decibels (dB).
- Weighting (A/C): Utilice el C.A button to switch between A-weighting (for general noise measurement, mimicking human ear response) and C-weighting (for measuring peak sound pressure levels).
- Response Time (FAST/SLOW): Utilice el RÁPIDO LENTO button to select the desired response time. Fast response is suitable for rapidly changing noise, while slow response is for more stable noise levels.
- Selección de rango: The device features an automatic range selection from 30 to 130 dB. Manual range adjustment may also be available depending on the model's specific firmware.
- Mantener MÁX/MÍN: Presione el MÁXIMO/MÍNIMO button to display the maximum or minimum sound level recorded during a measurement session. Press again to cycle through modes or exit.
- Retención de datos: Presione el SOSTENER Botón para congelar la lectura actual en la pantalla. Presione nuevamente para liberar.
2. Registro de datos
The SL-451 can record up to 32,000 measurements.
- Asegúrese de que el dispositivo esté encendido.
- Presione el REC button to start data logging. The "REC" indicator will appear on the display.
- Presione el REC de nuevo para detener el registro.
- To retrieve logged data, connect the device to a PC using the USB cable and open the installed software.
- Follow the software instructions to download, view, and analyze the recorded measurements. The software supports analysis according to standards like DIN 15905-5.
3. Calibración
For accurate measurements, periodic calibration is recommended. The device is calibratable.
- Use a standard sound calibrator (e.g., Voltcraft SLC-100, if available) to perform calibration.
- Refer to the specific instructions provided with your calibrator and the SL-451's detailed manual for the calibration procedure.
- Incorrect calibration can lead to inaccurate readings.
Mantenimiento
Limpieza:
- Limpie el dispositivo con un paño suave y seco.
- No utilice limpiadores abrasivos ni disolventes.
- Keep the microphone clean and free of dust or debris.
Almacenamiento:
- Cuando no se utilice durante períodos prolongados, retire las pilas para evitar fugas.
- Store the device in its carrying case in a cool, dry place.
Reemplazo de batería:
Replace batteries when the low battery indicator appears on the display to ensure continuous operation and accurate readings.
Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| El dispositivo no se enciende. | Low or dead batteries; incorrect battery polarity; power adapter not connected. | Reemplace las baterías; verifique la polaridad de las baterías; asegúrese de que el adaptador de corriente esté conectado de forma segura. |
| Lecturas inexactas. | Microphone obstructed; device not calibrated; incorrect weighting/response time. | Clean microphone; perform calibration; check A/C weighting and FAST/SLOW settings. |
| No se puede conectar a la PC. | USB cable faulty; software not installed correctly; driver issues. | Try a different USB cable; reinstall software; check device manager for driver conflicts. |
| El registro de datos no funciona. | Memory full; REC button not pressed correctly. | Download data to PC and clear device memory; ensure REC button is pressed until indicator appears. |
Presupuesto
| Modelo: | SL-451 |
| Rango de medición: | 30 to 130 dB (A/C) |
| Exactitud: | ± 1.4 dB |
| Rango de frecuencia: | De 31.5 Hz a 8 kHz |
| Ponderación: | A y C |
| Tiempo de respuesta: | Rápido lento |
| Data Logger Capacity: | Hasta 32,000 mediciones |
| Interfaz: | USB |
| Cumplimiento: | IEC 61672-1 Clase 2 |
| Dimensiones (L x An x Al): | 5 x 7.6 x 27.8 cm (1.97 x 2.99 x 10.94 pulgadas) |
| Peso: | 350 gramos (0.77 lbs) |
| Material: | Rubber (exterior protection) |
| Características especiales: | Bargraph, Calibratable, Battery/Power supply operation, Min/Max memory, Backlight, Analog output. |
Garantía y soporte
Voltcraft products are designed for reliability and performance. This device comes with a standard warranty as per local regulations. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official Voltcraft websitio.
Disponibilidad de repuestos: Las piezas de repuesto están disponibles durante 1 año a partir de la fecha de compra.
For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact Voltcraft customer service or your authorized dealer. Contact information can typically be found on the manufacturer's websitio o en el embalaje de su producto.