Dwyer 475-1-FM Digital Manometer Instruction Manual

1. Bubuka

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. Émbaran Kasalametan

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 Pancegahan Umum

• Ensure the manometer is in good working condition before each use.
• Hindarkeun ragrag atanapi ngagentoskeun alat kana dampak anu parah.
• Do not attempt to open or repair the unit yourself, as this may void the warranty and compromise intrinsic safety.
• Jauhkeun alat tina suhu sareng kalembaban anu ekstrim.

3. Eusi Paket

Pastikeun yén sadaya item anu didaptarkeun di handap aya dina pakét anjeun:

• Dwyer 475-1-FM Handheld Digital Manometer
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• pigeulang Lanyard
• Batré Alkali 9V
• Petunjuk Operasi (manual ieu)

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. Setélan

4.1 Pamasangan batré

1. Teang panutup kompartemen batré dina tonggong manometer.
2. Cabut panutup.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Ganti panutup kompartemen batré aman.

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. Parentah Operasi

5.1 Powering on / Pareum

• Pencét éta ON/OFF tombol pikeun kakuatan dina alat.
• Pencét éta 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. Pencét éta NOL 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.

• Pencét éta UNIT button to cycle through available pressure units (e.g., in. w.c., kPa).
• Pilih unit anu dipikahoyong pikeun pangukuran anjeun.

5.4 Nyokot Pangukuran

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. Pangropéa

6.1 beberesih

Wipe the exterior of the manometer with a soft, damp lawon. Ulah make cleaners abrasive atawa pangleyur, sabab ieu bisa ngaruksak casing atawa tampilan.

6.2 Ngagantian batré

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 Panyimpenan

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. Cara ngungkulan

8. Spésifikasi

• rentang ganda: 0-20.00" w.c. (4.982 kPa)
• Akurasi:
  • ±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)
• Histeresis tekanan: ± 0.1% tina Skala Pinuh
• Wates Suhu: 0 nepi ka 140 ° F (-17.8 nepi ka 60 ° C)
• Wates Suhu anu dikompensasi: 32 nepi ka 104 ° F (0 nepi ka 40 ° C)
• Wates Suhu Panyimpenan: -4 nepi ka 176 ° F (-20 nepi ka 80 ° C)
• tampilan: 0.42" (10.6 mm) 4-digit LCD
• Syarat Daya: 9V alkaline battery (user replaceable)
• beurat: 10.8 oz. (306 g)
• Sambungan prosés: Two barbed connections for 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing
• jasa: Air and compatible combustible gases
• Persetujuan Badan: CE, FM (Intrinsically Safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations)
• ukuran: 6.5 x 3.5 x 0.75 inci
• Bahan: Latex, Rubber (for tubing)

9. Jaminan & Dukungan

9.1 Émbaran jaminan

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 websitus atanapi ngahubungan rojongan customer.

9.2 Rojongan Téknis

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 websitus atanapi dina bungkusan produk.