Manual de instrucțiuni pentru manometrul digital Dwyer 475-1-FM

1. Introducere

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. Informații de siguranță

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 Precauții generale

• Ensure the manometer is in good working condition before each use.
• Evitați să scăpați dispozitivul sau să îl supuneți la impacturi puternice.
• Do not attempt to open or repair the unit yourself, as this may void the warranty and compromise intrinsic safety.
• Păstrați dispozitivul departe de temperaturi extreme și umiditate.

3. Conținutul pachetului

Verificați dacă toate articolele enumerate mai jos sunt prezente în colet:

• Dwyer 475-1-FM Handheld Digital Manometer
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• încheietura Lanyard
• Baterie alcalina 9V
• Instrucțiuni de operare (acest 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. Configurare

4.1 Instalarea bateriei

1. Locate the battery compartment cover on the back of the manometer.
2. Scoateți capacul.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Puneți bine capacul compartimentului bateriei.

4.2 Conectarea tuburilor

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. Instrucțiuni de utilizare

5.1 Pornire/Oprire

• Apăsați tasta ON/OFF buton pentru a porni dispozitivul.
• Apăsați tasta 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. Apăsați tasta 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.

• Apăsați tasta UNITATE button to cycle through available pressure units (e.g., in. w.c., kPa).
• Selectați unitatea de măsură dorită.

5.4 Preluarea măsurătorilor

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. Întreținere

6.1 Curățare

Wipe the exterior of the manometer with a soft, damp lavetă. Nu folosiți produse de curățare abrazive sau solvenți, deoarece acestea pot deteriora casing sau afișaj.

6.2 Înlocuirea bateriei

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 Depozitare

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. Depanare

8. Specificații

• Interval dublu: 0-20.00" w.c. (4.982 kPa)
• Precizie:
  • ±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)
• Histerezis de presiune: ±0.1% din scara maximă
• Limite de temperatură: 0 până la 140 °F (-17.8 până la 60 °C)
• Limite de temperatură compensate: 32 până la 104 °F (0 până la 40 °C)
• Limite de temperatură de depozitare: -4 până la 176°F (-20 până la 80°C)
• Afişa: 0.42" (10.6 mm) 4-digit LCD
• Cerințe de alimentare: 9V alkaline battery (user replaceable)
• Greutate: 10.8 oz. (306 g)
• Conexiuni la proces: Two barbed connections for 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing
• Serviciu: Air and compatible combustible gases
• Aprobări ale agenției: CE, FM (Intrinsically Safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations)
• Dimensiuni: 6.5 x 3.5 x 0.75 inci
• Material: Latex, Rubber (for tubing)

9. Garanție și asistență

9.1 Informații despre garanție

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 website-ul sau contactați asistența pentru clienți.

9.2 Suport tehnic

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 website-ul sau pe ambalajul produsului.