Fluke 28IIEX/ETL Intrinsically Safe True-RMS Digital Multimeter User Manual

1. Pengenalan

This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of the Fluke 28IIEX/ETL Intrinsically Safe True-RMS Digital Multimeter. This device is engineered for precise electrical measurements in potentially hazardous environments, offering robust performance and advanced safety features.

2. Maklumat Keselamatan

WARNING: Read and understand all safety information before using this product. Failure to do so may result in serious injury or death.

2.1 Garis Panduan Keselamatan Am

• Always use the multimeter with the specified test leads and accessories.
• Jangan gunakan multimeter jika ia kelihatan rosak atau beroperasi secara tidak normal.
• Patuhi semua kod keselamatan tempatan dan kebangsaan.
• Pastikan fungsi dan julat yang betul dipilih sebelum membuat pengukuran.
• Avoid working alone in hazardous environments.

2.2 Operasi yang Selamat Secara Intrinsik

The Fluke 28IIEX/ETL is designed for use in hazardous locations classified as:

• ATEX: II 2 G Ex ia IIC T4 Gb, II 2 D Ex ia IIIC T130°C Db, I M1 Ex ia I Ma
• NEC-500: Class I, Div 1, Groups A-D, 130 °C
• IEXEx: Ex ia IIC T4 Gb, Ex ia IIIC T130°C Db, Ex ia I Ma

These ratings ensure the device will not ignite explosive atmospheres under normal or fault conditions. Always ensure the device is used within its specified environmental and electrical limits for intrinsically safe operation.

2.3 Electrical Safety Ratings

The multimeter meets International Electrotechnical Commission (IEC) safety standard 61010 and is certified for:

• Category III 1000V: For measurements on building circuit installations (e.g., service panel parts, branch circuits, fixed installations).
• Category IV 600V: For measurements at the origin of the installation (e.g., electricity meters, primary over-current protection equipment).
• Pencemaran Darjah 2: Untuk kegunaan dalaman.

2.4 Perlindungan Alam Sekitar

The device is Ingress Protection (IP) certified IP67, meaning it is waterproof, dust-proof, and drop-proof, suitable for harsh industrial environments.

3. Produk Lebihview

The Fluke 28IIEX/ETL is a robust digital multimeter designed for reliability and accuracy. It features a large LCD display with a two-level bright white backlight for visibility in various lighting conditions.

Rajah 1: Depan view of the Fluke 28IIEX/ETL Digital Multimeter. The image displays the device with its red protective holster, gray body, LCD screen showing '28.20 V AC', and the rotary dial for function selection. Below the dial are the input jacks for current, voltage, and common connections, along with safety warnings and certifications.

3.1 Ciri-ciri Utama

• True-RMS measurements for accurate readings on linear and non-linear loads.
• Auto- and manual-ranging capabilities.
• Langkah-langkah voltage, current, resistance, capacitance, frequency, temperature, conductance, and duty cycle.
• Performs continuity and diode tests.
• Low-pass filter for accurate voltage and frequency measurements on variable-speed motor drives.
• MIN/MAX/AVG and Peak Capture functions to record transients and measurement variations.
• Relative mode to remove test lead interference.
• Backlit keypad buttons and display for low-light conditions.
• Audible alarm for incorrect test lead connection.

4. Persediaan

4.1 Pemasangan Bateri

The Fluke 28IIEX/ETL requires four (4) AA alkaline batteries for operation. To install or replace batteries:

1. Pastikan multimeter dimatikan.
2. Tanggalkan sarung getah pelindung.
3. Locate and open the battery compartment cover on the rear of the device.
4. Insert four new AA alkaline batteries, observing the correct polarity markings.
5. Securely close the battery compartment cover and reattach the holster.

4.2 Menghubungkan Petunjuk Ujian

Always connect test leads to the appropriate input jacks for the measurement being performed. The multimeter will sound an alarm if leads are connected incorrectly for the selected function.

• COM Jack: Connect the black test lead to the common (COM) jack for all measurements.
• Jek VΩHz: Sambungkan wayar ujian merah ke bicu ini untuk volumtage, resistance, frequency, capacitance, and diode tests.
• mAµA Jack: Connect the red test lead to this jack for current measurements up to 400mA. This input is fused.
• 10A Max Fused Jack: Sambungkan wayar ujian merah ke bicu ini untuk pengukuran arus sehingga 10A. Input ini difius.

5. Arahan Operasi

Turn the rotary switch to the desired function. The multimeter defaults to auto-ranging mode, automatically selecting the correct measurement range. Press the 'RANGE' button to switch to manual ranging.

5.1 Mengukur Voltage (AC/DC)

1. Connect the black lead to COM and the red lead to VΩHz.
2. Turn the rotary switch to V~ (AC Voltage) atau V- (Vol DCtagdan).
3. Sambungkan petunjuk ujian merentasi litar atau komponen yang akan diukur.

5.2 Measuring Current (mA/A/µA)

WARNING: Never attempt to measure current by connecting the multimeter in parallel with a voltagsumber e. Ini boleh merosakkan meter dan menyebabkan kecederaan.

1. Connect the black lead to COM. Connect the red lead to mAµA for small currents or 10A Max Fused for larger currents.
2. Turn the rotary switch to mA/A~ (AC Current) or mA/A- (DC Current).
3. Open the circuit and connect the multimeter in series with the load.

5.3 Mengukur Rintangan (Ω)

1. Connect the black lead to COM and the red lead to VΩHz.
2. Turn the rotary switch to Ω.
3. Pastikan litar dinyahdayakan. Sambungkan wayar ujian merentasi komponen.

5.4 Ujian Kesinambungan

1. Connect the black lead to COM and the red lead to VΩHz.
2. Turn the rotary switch to the continuity symbol (speaker icon).
3. Ensure the circuit is de-energized. Connect the test leads across the component. An audible tone indicates continuity.

5.5 Ujian Diod

1. Connect the black lead to COM and the red lead to VΩHz.
2. Turn the rotary switch to the diode symbol.
3. Ensure the circuit is de-energized. Connect the test leads across the diode. The display shows the forward voltage penurunan.

5.6 Mengukur Kapasitansi (F)

1. Connect the black lead to COM and the red lead to VΩHz.
2. Turn the rotary switch to the capacitance symbol.
3. Pastikan kapasitor dinyahcas sebelum menyambungkan petunjuk ujian.

5.7 Measuring Frequency (Hz) and Duty Cycle (%)

1. Connect the black lead to COM and the red lead to VΩHz.
2. Turn the rotary switch to Hz.
3. Connect the test leads across the signal source. Press the '%' button to view kitar tugas.

5.8 Measuring Temperature (°C/°F)

1. Connect the K-type thermocouple (included) to the VΩHz and COM jacks, observing polarity.
2. Turn the rotary switch to the temperature symbol.
3. Place the thermocouple tip on the object to be measured.

5.9 Fungsi Khas

• MIN MAX: Press to record minimum, maximum, and average readings over time.
• PEAK MIN MAX: Captures fast transients.
• REL Δ (Relative Mode): Subtracts the stored reading from subsequent readings, useful for nulling out test lead resistance.
• DIBERI: Membekukan bacaan paparan semasa.

6. Penyelenggaraan

6.1 Pembersihan

Lap kes dengan iklanamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the device is dry before use.

6.2 Penggantian Bateri

Refer to Section 4.1 for battery replacement instructions. Replace batteries when the low battery indicator appears on the display.

6.3 Penggantian Fius

WARNING: To prevent injury or damage to the multimeter, use only specified replacement fuses with the correct amperage, jilidtage, dan mengganggu penilaian.

The Fluke 28IIEX/ETL has two internal fuses:

• 10A Max Fused: For the 10A current input.
• 400mA Fused: For the mA/µA current input.

Fuse replacement should only be performed by qualified personnel. Consult the full service manual or contact Fluke customer support for detailed instructions.

7. Penyelesaian masalah

If the multimeter is not functioning as expected, review isu-isu lazim berikut:

• Tiada paparan atau paparan samar: Periksa bateri dan ganti jika perlu.
• Bacaan yang salah: Ensure test leads are correctly connected, the function and range are appropriate for the measurement, and the circuit is de-energized for resistance/continuity/diode tests.
• Pengukuran semasa tidak berfungsi: Check the fuses for the respective current input (10A or 400mA). Replace if blown.
• Multimeter does not respond: Turn the unit off and then on again. If the issue persists, remove batteries for a few minutes and reinsert.

For persistent issues or complex problems, contact Fluke customer support.

8. Spesifikasi

9. Waranti dan Sokongan

Fluke Corporation products are designed for reliability and performance. For warranty information, technical support, or service, please visit the official Fluke website or contact your local Fluke representative.

Official Fluke Webtapak: www.fluke.com