Manwal ta' Istruzzjoni tal-Manometru Diġitali Dwyer 475-1-FM

1. Introduzzjoni

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. Informazzjoni dwar is-Sigurtà

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 Prekawzjonijiet Ġenerali

• Ensure the manometer is in good working condition before each use.
• Evita li twaqqa' l-apparat jew li tissottomettih għal impatt qawwi.
• 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. Kontenut tal-Pakkett

Iċċekkja li l-oġġetti kollha elenkati hawn taħt huma preżenti fil-pakkett tiegħek:

• Dwyer 475-1-FM Handheld Digital Manometer
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• polz Lanyard
• Batterija alkalina 9V
• Istruzzjonijiet Operattivi (dan il-manwal)

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. Setup

4.1 Installazzjoni tal-batterija

1. Locate the battery compartment cover on the back of the manometer.
2. Neħħi l-għatu.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Ibdel l-għatu tal-kompartiment tal-batterija b'mod sikur.

4.2 Konnessjoni tat-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. Istruzzjonijiet Operattivi

5.1 Tixgħel/Jitfi

• Agħfas il- ON/OFF buttuna biex tixgħel l-apparat.
• Agħfas il- ON/OFF button again to power off the device.

5.2 Funzjoni ta' Żero Awtomatiku

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. Agħfas il- ŻERO 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.

• Agħfas il- UNITÀ button to cycle through available pressure units (e.g., in. w.c., kPa).
• Agħżel l-unità mixtieqa għall-kejl tiegħek.

5.4 Teħid tal-Kejl

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. Manutenzjoni

6.1 Tindif

Imsaħ il-barra tal-manometru b'ċarruta ratba u damp drapp. Tużax prodotti tat-tindif jew solventi li joborxu, għax dawn jistgħu jagħmlu ħsara lis-casing jew wiri.

6.2 Sostituzzjoni tal-batterija

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 Ħażna

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 Issolvi l-problemi

8. Speċifikazzjonijiet

• Medda Doppju: 0-20.00" w.c. (4.982 kPa)
• Eżattezza:
  • ±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 tal-Pressjoni: ±0.1% tal-Iskala Sħiħa
• Limiti tat-temperatura: 0 sa 140 ° F (-17.8 sa 60 ° C)
• Limiti tat-Temperatura kkumpensati: 32 sa 104 ° F (0 sa 40 ° C)
• Limiti tat-Temperatura tal-Ħażna: -4 sa 176 ° F (-20 sa 80 ° C)
• Wiri: 0.42" (10.6 mm) 4-digit LCD
• Rekwiżiti tal-Enerġija: 9V alkaline battery (user replaceable)
• Piż: 10.8 oz. (306 g)
• Konnessjonijiet tal-Proċess: Two barbed connections for 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing
• Servizz: Arja u gassijiet kombustibbli kompatibbli
• Approvazzjonijiet tal-Aġenzija: CE, FM (Intrinsikament Sikur għal postijiet perikolużi tal-Klassi 1, Div. 1, Grupp A, B, C, D, T4)
• Dimensjonijiet: 6.5 x 3.5 x 0.75 pulzieri
• Materjal: Latex, Rubber (for tubing)

9. Garanzija u Appoġġ

9.1 Informazzjoni dwar Garanzija

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 websit jew ikkuntattja l-appoġġ tal-klijent.

9.2 Appoġġ Tekniku

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 webis-sit jew fuq l-imballaġġ tal-prodott.