Manual Arahan Manometer Digital Dwyer 475-1-FM

1. Pengenalan

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. Maklumat Keselamatan

2.1 Operasi yang Selamat Secara Intrinsik

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 Langkah berjaga-jaga Am

• Ensure the manometer is in good working condition before each use.
• Elakkan daripada menjatuhkan atau menyebabkan peranti ini mengalami hentaman yang teruk.
• 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. Kandungan Pakej

Sahkan bahawa semua item yang disenaraikan di bawah terdapat dalam pakej anda:

• Manometer Digital Genggam Dwyer 475-1-FM
• Rubber Latex Tubing (3/16 inch ID, 9 foot length)
• pergelangan tangan lanyard
• Bateri Beralkali 9V
• Arahan Pengendalian (manual ini)

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. Persediaan

4.1 Pemasangan Bateri

1. Locate the battery compartment cover on the back of the manometer.
2. Tanggalkan penutup.
3. Insert the supplied 9V alkaline battery, ensuring correct polarity.
4. Gantikan penutup petak bateri dengan selamat.

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. Arahan Operasi

5.1 Menghidupkan/Mematikan

• Tekan ke HIDUP/MATI butang untuk menghidupkan peranti.
• Tekan ke HIDUP/MATI button again to power off the device.

5.2 Fungsi Auto Sifar

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. Tekan ke SIFAR 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.

• Tekan ke UNIT button to cycle through available pressure units (e.g., in. w.c., kPa).
• Pilih unit yang dikehendaki untuk ukuran anda.

5.4 Mengambil Ukuran

1. Laksanakan fungsi Auto Sifar seperti yang diterangkan dalam Bahagian 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. Penyelenggaraan

6.1 Pembersihan

Lap bahagian luar manometer dengan lembut, damp kain. Jangan gunakan pembersih atau pelarut yang kasar, kerana ini boleh merosakkanasing atau paparan.

6.2 Penggantian Bateri

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 Penyimpanan

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. Penyelesaian masalah

8. Spesifikasi

• Julat Dwi: 0-20.00" w.c. (4.982 kPa)
• Ketepatan:
  • ±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% Skala Penuh
• Had Suhu: 0 hingga 140°F (-17.8 hingga 60°C)
• Had Suhu Dikompensasi: 32 hingga 104°F (0 hingga 40°C)
• Had Suhu Penyimpanan: -4 hingga 176°F (-20 hingga 80°C)
• paparan: LCD 4-digit 0.42" (10.6 mm)
• Keperluan Kuasa: 9V alkaline battery (user replaceable)
• Berat: 10.8 oz. (306 g)
• Sambungan Proses: Dua sambungan berduri untuk tiub ID 1/8" (3.18 mm) atau 3/16" (4.76 mm)
• Perkhidmatan: Udara dan gas mudah terbakar yang serasi
• Kelulusan Agensi: CE, FM (Intrinsically Safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations)
• Dimensi: 6.5 x 3.5 x 0.75 inci
• Bahan: Latex, Rubber (for tubing)

9. Waranti & Sokongan

9.1 Maklumat Waranti

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 webtapak atau hubungi sokongan pelanggan.

9.2 Sokongan Teknikal

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 webtapak atau pada pembungkusan produk.