VOLTCRAFT VC131 Handheld Multimeter User Manual

1. Pengenalan

The VOLTCRAFT VC131 is a robust and versatile handheld digital multimeter designed for a wide range of electrical measurement tasks. It serves as an excellent entry-level device, replacing previous models like the VC-130 and VC-135. This multimeter features an automatic measuring range selection function, making it user-friendly for both alternating (AC) and direct (DC) current measurements, though current measurement is limited to DC. Its razor-sharp EBTN display ensures clear readability in various lighting conditions, with a 2.2-inch diagonal screen for large, easy-to-read numbers and symbols. The device is built with a durable two-component housing, integrated soft rubber protection, and slightly raised edges to safeguard the display, rotary switch, and buttons, ensuring longevity and a secure grip even in demanding environments.

Key features include tilt protection for stability, a non-slip design, a built-in torch function for illuminating dark work areas, and a non-contact voltage (NCV) sensor for safely detecting live cables without direct contact. The measuring tips are equipped with removable protective caps for enhanced safety and versatility.

2. Maklumat Keselamatan

Always adhere to safety precautions when operating electrical testing equipment. Failure to do so may result in injury or damage to the device.

• Baca Arahan Operasi: Before using the device, thoroughly read and understand this manual.
• Penilaian Kategori: This device is rated CAT III 600 V. Do not use it for measurements exceeding this category or voltage.
• Periksa Sebelum Penggunaan: Always inspect the multimeter and test leads for any damage before each use. Do not use if damaged.
• Sambungan yang betul: Connect the test leads correctly to the circuit and the multimeter terminals.
• Voltage Pengesanan: Use the Non-Contact Voltage (NCV) function to safely check for live wires before making contact.
• Keselamatan Bateri: Ensure correct battery polarity during installation. Replace batteries when the low battery indicator appears.
• Penggantian fius: Only replace fuses with the specified type and rating.
• Keadaan Persekitaran: Use the device within its specified environmental limits (temperature, humidity).
• Elakkan Kelembapan: Do not expose the multimeter to moisture or operate it in wet conditions.

Rajah 2.1: Belakang view of the VC131 Multimeter, highlighting the battery compartment and printed safety warnings, including the instruction to "Read the operating instructions!" and battery type (9V 1604 6F22).

3. Produk Lebihview

The VOLTCRAFT VC131 is designed for ease of use and durability. Below is an overview daripada komponen dan ciri-ciri utamanya.

Rajah 3.1: Depan view of the VOLTCRAFT VC131 Handheld Multimeter, showing the large EBTN display, rotary function switch, and input jacks.

3.1 Ciri-ciri Utama

• CAT III 600 V Rating: Suitable for measurements in distribution boards, circuit breakers, wiring, and cables.
• Paparan 2000 Kiraan: Provides precise readings with a maximum display value of 1999.
• Automatic Range Selection: Simplifies operation by automatically selecting the appropriate measurement range.
• Fungsi Obor: LED bersepadu lamp for illuminating dark work areas.
• Pencahayaan Paparan: Backlit display for clear visibility in low-light conditions.
• Vol. Bukan KenalantagUjian e (NCV): Mengesan AC voltage tanpa sentuhan fizikal, meningkatkan keselamatan.
• Reka Bentuk Teguh: Two-component housing with soft rubber protection for durability and a secure grip.
• EBTN Display: Razor-sharp, easy-to-read display in both bright and dark environments.
• Tilt Protection & Non-Slip: Ensures stability when placed on surfaces, with or without the kickstand.
• Removable Protective Caps: Test lead tips are protected and can be uncovered for specific applications.

4. Persediaan

4.1 Pemasangan Bateri

The VOLTCRAFT VC131 requires a 9V (1604, 6F22) battery for operation. To install or replace the battery:

1. Pastikan multimeter dimatikan dan putuskan sambungan semua wayar ujian daripada peranti dan sebarang litar.
2. Cari petak bateri di belakang multimeter.
3. Using a screwdriver, loosen the screw securing the battery compartment cover.
4. Tanggalkan penutup.
5. Insert the 9V battery, observing the correct polarity (+ and -).
6. Pasang semula penutup petak bateri dan ketatkan skru dengan kukuh.

4.2 Menghubungkan Petunjuk Ujian

Sambungan petunjuk ujian yang betul adalah penting untuk pengukuran yang tepat dan selamat.

Figure 4.1: The VC131 Multimeter shown with its included red and black test leads, ready for connection.

1. Insert the black test lead into the "COM" (common) jack. This is the negative (-) input.
2. Bagi kebanyakan voltage, resistance, continuity, and diode measurements, insert the red test lead into the "VΩmA" jack. This is the positive (+) input.
3. For high DC current measurements (up to 10A), insert the red test lead into the "10A max" jack.
4. Ensure the test leads are fully inserted and securely connected.
5. If necessary, remove the protective caps from the test lead tips for specific measurement points.

5. Arahan Operasi

The VC131 features a rotary switch for selecting measurement functions and buttons for additional features.

5.1 Hidupkan/Mati Kuasa

• To turn on the multimeter, rotate the function switch from "OFF" to any desired measurement function.
• To turn off the multimeter, rotate the function switch to the "OFF" position.

5.2 Fungsi Pengukuran

Select the desired function using the central rotary switch.

• DC Voltage (V–): For measuring direct current voltage. Connect leads in parallel to the circuit.
• Vol. ACtage (V~): For measuring alternating current voltage. Connect leads in parallel to the circuit.
• Rintangan (Ω): For measuring electrical resistance. Ensure the circuit is de-energized before measuring.
• Continuity (•))): For checking circuit continuity. An audible beep indicates continuity.
• Diode Test (•|•): Untuk menguji diod.
• DC Current (A–, mA–, µA–): For measuring direct current. Connect leads in series with the circuit. Note: AC current measurement is not supported by this model.

5.3 Fungsi Khas

• Butang TAHAN: Tekan untuk membekukan bacaan semasa pada paparan. Tekan sekali lagi untuk melepaskan.
• Fungsi Obor: The built-in LED light can be activated to illuminate the work area. Refer to the device for the specific button or switch to activate the torch.
• Vol. Bukan Kenalantage (NCV):
  

  Figure 5.1: The VC131 Multimeter demonstrating the Non-Contact Voltage (NCV) function, with the NCV sensor illuminated, indicating detection of an electromagnetic field.

  To use the NCV function, rotate the switch to the NCV position. Place the front of the multimeter near the suspected live wire. The NCV sensor will detect the electromagnetic field, providing an audible and/or visual indication of voltage presence. This is useful for locating live cables through insulation or checking for voltage tanpa sentuhan langsung.

6. Penyelenggaraan

6.1 Pembersihan

Untuk mengekalkan prestasi dan penampilan peranti:

• Lap casing dengan iklanamp kain dan detergen yang lembut. Jangan gunakan pembersih atau pelarut yang kasar.
• Pastikan tiada kelembapan memasuki peranti.

6.2 Penggantian Bateri

Replace the 9V battery when the low battery indicator appears on the display. Refer to Section 4.1 for detailed instructions.

6.3 Penggantian Fius

If the current measurement function stops working, the fuse may need replacement. This procedure should only be performed by qualified personnel.

• Pastikan multimeter dimatikan dan semua kabel ujian diputuskan sambungannya.
• Open the back casing of the multimeter (this may require removing more screws than just the battery cover).
• Locate the fuse(s).
• Replace the blown fuse with a fuse of the exact same type and rating (e.g., 10A max FUSED, 200mA max FUSED). Refer to the markings near the input jacks for fuse specifications.
• Securely close the casing.

7. Penyelesaian masalah

8. Spesifikasi