Manual de instrucións do manómetro dixital Dwyer 475-1-FM

1. Introdución

The Dwyer 475-1-FM Handheld Digital Manometer is designed for fast, accurate positive, negative, and differential pressure measurements. This device is suitable for use with air and compatible combustible gases. Its robust design and intrinsic safety features make it ideal for various industrial and scientific applications, including HVAC system monitoring, clean rooms, fume hoods, and isolation cabinets.

2. Información de seguridade

2.1 Funcionamento intrínsecamente seguro

The Dwyer 475 Series Manometer is FM-approved intrinsically safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations. Adhere to all local and national safety regulations when operating in such environments.

2.2 Gas Compatibility

This manometer is compatible with air and compatible combustible gases. Do not use with incompatible or corrosive gases, as this may damage the instrument and pose a safety risk. Always verify gas compatibility before connecting the manometer.

2.3 Precaucións xerais

• Ensure the manometer is in good working condition before each use.
• Evite deixar caer o dispositivo nin someterlo a impactos fortes.
• Do not attempt to open or repair the unit yourself, as this may void the warranty and compromise intrinsic safety.
• Keep the device away from extreme temperatures and moisture.

3. Contido do paquete

Verifique que todos os elementos que se indican a continuación estean presentes no seu paquete:

• Dwyer 475-1-FM Handheld Digital Manometer
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• pulseira de seguridade
• Batería alcalina 9V
• Instrucións de funcionamento (este manual)

Image: The Dwyer 475-1-FM Digital Manometer shown alongside the included rubber latex tubing. The manometer features a digital display and control buttons for ON/OFF, ZERO, and UNITS.

4. Configuración

4.1 Instalación da batería

1. Locate the battery compartment cover on the back of the manometer.
2. Retire a tapa.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Coloque a tapa do compartimento da batería de forma segura.

4.2 Conexión de tubaxes

The manometer features two barbed connections for tubing. These connections accept 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing.

1. For positive pressure, connect the tubing from the pressure source to the positive (+) port.
2. For negative pressure (vacuum), connect the tubing from the vacuum source to the negative (-) port.
3. For differential pressure, connect the higher pressure source to the positive (+) port and the lower pressure source to the negative (-) port.
4. Ensure tubing connections are snug to prevent leaks.

5. Instrucións de funcionamento

5.1 Acendido/Apagado

• Preme o ON/OFF botón para acender o dispositivo.
• Preme o ON/OFF button again to power off the device.

5.2 Auto Zero Function

Before taking a measurement, it is crucial to zero the instrument for accuracy.

1. Ensure both pressure ports are open to atmospheric pressure (disconnected from any pressure source).
2. Preme o CERO button. The display will show '0.00' or a similar indication, confirming the zeroing process.

5.3 Pressure Unit Selection

The manometer allows selection between U.S. and metric pressure units.

• Preme o UNIDADES button to cycle through available pressure units (e.g., in. w.c., kPa).
• Select the desired unit for your measurement.

5.4 Toma de medicións

1. Perform the Auto Zero function as described in Section 5.2.
2. Connect the tubing to the appropriate pressure source(s) as described in Section 4.2.
3. The large LCD will display the pressure reading in the selected units.
4. The manometer can display positive, negative, or differential pressures.

6. Mantemento

6.1 Limpeza

Wipe the exterior of the manometer with a soft, damp pano. Non empregue produtos de limpeza abrasivos nin disolventes, xa que poden danar o casing ou pantalla.

6.2 Substitución da batería

When the battery indicator appears on the display, replace the 9V alkaline battery following the steps in Section 4.1. A fresh battery provides up to 100 hours of operation.

6.3 Almacenamento

Store the manometer in a dry, cool place, away from direct sunlight and extreme temperatures. Disconnect tubing and remove the battery if storing for extended periods to prevent leakage.

7 Solución de problemas

8. Especificacións

• Rango dual: 0-20.00" w.c. (4.982 kPa)
• Precisión:
  • ±0.5% Full Scale, 60 to 78°F (15.6 to 25.6°C)
  • ±1.5% Full Scale, 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C)
• Histéresis de presión: ±0.1% da escala completa
• Límites de temperatura: De -0 a 140 °C (17.8 a 60 °F)
• Límites de temperatura compensados: De 32 a 104 °C (0 a 40 °F)
• Límites de temperatura de almacenamento: -4 a 176 °F (-20 a 80 °C)
• Visualización: 0.42" (10.6 mm) 4-digit LCD
• Requisitos de enerxía: 9V alkaline battery (user replaceable)
• Peso: 10.8 oz. (306 g)
• Conexións de proceso: Two barbed connections for 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing
• Servizo: Air and compatible combustible gases
• Aprobacións da axencia: CE, FM (Intrinsically Safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations)
• Dimensións: 6.5 x 3.5 x 0.75 polgadas
• Material: Latex, Rubber (for tubing)

9. Garantía e soporte

9.1 Información da garantía

Dwyer Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of one year from the date of purchase. For full warranty details and conditions, please refer to the official Dwyer Instruments websitio ou póñase en contacto co servizo de atención ao cliente.

9.2 Soporte técnico

For technical assistance, troubleshooting beyond this manual, or to inquire about repairs, please contact Dwyer Instruments customer service. Contact information can typically be found on the manufacturer's official websitio web ou na embalaxe do produto.