Dwyer 475-1-FM Digital Manometer Instruction Manual

1. Introducció

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. Informació de seguretat

2.1 Intrinsically Safe Operation

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 Precaucions generals

• Ensure the manometer is in good working condition before each use.
• Eviteu deixar caure el dispositiu ni sotmetre'l a impactes forts.
• 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. Contingut del paquet

Verifiqueu que tots els elements que s'enumeren a continuació siguin presents al vostre paquet:

• Dwyer 475-1-FM Handheld Digital Manometer
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• canell corretja de coll
• Bateria alcalina de 9V
• Instruccions de funcionament (aquest 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. Configuració

4.1 Instal·lació de la bateria

1. Locate the battery compartment cover on the back of the manometer.
2. Traieu la coberta.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Col·loqueu la coberta del compartiment de la bateria amb seguretat.

4.2 Tubing Connection

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. Instruccions de funcionament

5.1 Engegada/apagada

• Premeu el botó ON/OFF botó per encendre el dispositiu.
• Premeu el botó ON/OFF el botó de nou per apagar el dispositiu.

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. Premeu el botó ZERO 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.

• Premeu el botó UNITATS button to cycle through available pressure units (e.g., in. w.c., kPa).
• Seleccioneu la unitat de mesura desitjada.

5.4 Prendre mesures

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. Manteniment

6.1 Neteja

Wipe the exterior of the manometer with a soft, damp drap. No utilitzeu netejadors abrasius ni dissolvents, ja que poden danyar el casing o pantalla.

6.2 Substitució de la bateria

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 Emmagatzematge

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. Solució De Problemes

8. Especificacions

• Doble rang: 0-20.00" w.c. (4.982 kPa)
• Precisió:
  • ±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)
• Histèresi de pressió: ±0.1% de l'escala completa
• Límits de temperatura: De 0 a 140 °F (-17.8 a 60 °C)
• Límits de temperatura compensats: De 32 a 104 °C (0 a 40 °F)
• Límits de temperatura d'emmagatzematge: -4 a 176 °F (-20 a 80 °C)
• Visualització: 0.42" (10.6 mm) 4-digit LCD
• Requisits d'alimentació: 9V alkaline battery (user replaceable)
• Pes: 10.8 oz. (306 g)
• Connexions de procés: Two barbed connections for 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing
• Servei: Air and compatible combustible gases
• Aprovacions de l'agència: CE, FM (Intrinsically Safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations)
• Dimensions: 6.5 x 3.5 x 0.75 polzades
• Material: Latex, Rubber (for tubing)

9. Garantia i assistència

9.1 Informació de la garantia

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 weblloc o contacteu amb el servei d'atenció al client.

9.2 Suport tècnic

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 weblloc web o a l'embalatge del producte.