Manuale di istruzioni del manometro digitale Dwyer 475-1-FM

1. Introduzione

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. Informazioni sulla sicurezza

2.1 Funzionamento intrinsecamente sicuro

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 Precauzioni generali

• Ensure the manometer is in good working condition before each use.
• Evitare di far cadere o di sottoporre il dispositivo a urti violenti.
• Do not attempt to open or repair the unit yourself, as this may void the warranty and compromise intrinsic safety.
• Tenere il dispositivo lontano da temperature estreme e umidità.

3. Contenuto della confezione

Verifica che tutti gli articoli elencati di seguito siano presenti nel tuo pacco:

• Dwyer 475-1-FM Handheld Digital Manometer
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• da polso Lanyard
• Batteria alcalina da 9 V
• Istruzioni per l'uso (questo manuale)

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. Impostazione

4.1 Installazione della batteria

1. Locate the battery compartment cover on the back of the manometer.
2. Togliere il coperchio.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Riposizionare saldamente il coperchio del vano batteria.

4.2 Collegamento dei tubi

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. Istruzioni per l'uso

5.1 Accensione/Spegnimento

• Premere il tasto ACCESO/SPENTO pulsante per accendere il dispositivo.
• Premere il tasto ACCESO/SPENTO button again to power off the device.

5.2 Auto Zero Function

Prima di effettuare una misurazione, è fondamentale azzerare lo strumento per garantire la precisione.

1. Ensure both pressure ports are open to atmospheric pressure (disconnected from any pressure source).
2. Premere il tasto 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.

• Premere il tasto UNITÀ button to cycle through available pressure units (e.g., in. w.c., kPa).
• Seleziona l'unità di misura desiderata.

5.4 Esecuzione delle misurazioni

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. Manutenzione

6.1 Pulizia

Wipe the exterior of the manometer with a soft, damp panno. Non utilizzare detergenti abrasivi o solventi, poiché potrebbero danneggiare il casing o display.

6.2 Sostituzione della batteria

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 Conservazione

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. Risoluzione Dei Problemi

8. Specifiche

• Doppia gamma: 0-20.00" w.c. (4.982 kPa)
• Precisione:
  • ±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)
• Isteresi di pressione: ±0.1% della scala completa
• Limiti di temperatura: da 0 a 140 °F (da -17.8 a 60 °C)
• Limiti di temperatura compensati: da 32 a 104 °F (da 0 a 40 °C)
• Limiti della temperatura di conservazione: da -4 a 176°F (da -20 a 80°C)
• Display: 0.42" (10.6 mm) 4-digit LCD
• Requisiti di alimentazione: 9V alkaline battery (user replaceable)
• Peso: 10.8 once (306 g)
• Connessioni di processo: Two barbed connections for 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing
• Servizio: Air and compatible combustible gases
• Approvazioni dell'agenzia: CE, FM (Intrinsically Safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations)
• Dimensioni: 6.5 x 3.5 x 0.75 pollici
• Materiale: Latex, Rubber (for tubing)

9. Garanzia e supporto

9.1 Informazioni sulla garanzia

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 websito o contattare l'assistenza clienti.

9.2 Supporto tecnico

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 websito o sulla confezione del prodotto.