Irfora T58B Digital Multimeter User Manual

1. ບົດແນະນຳ

Thank you for choosing the Irfora T58B Digital Multimeter. This instrument is a handheld, true RMS digital multimeter designed for accurate measurement of AC/DC voltage, AC/DC current, frequency, resistance, capacitance, and diodes. It is a versatile tool for solving industrial and household electrical problems, suitable for both DIY enthusiasts and professionals.

Please read this manual thoroughly before use to ensure safe and proper operation. Keep this manual for future reference.

2. ຂໍ້ມູນຄວາມປອດໄພ

ຄຳເຕືອນ: To avoid electric shock or personal injury, and to prevent damage to the meter or the equipment under test, observe the following safety rules:

• ໃຫ້ແນ່ໃຈວ່າມິເຕີຢູ່ໃນໜ້າທີ່ ແລະ ລະດັບທີ່ຖືກຕ້ອງສຳລັບການວັດແທກສະເໝີ.
• ຫ້າມໃຊ້ຫຼາຍກ່ວາ voltage, ຕາມທີ່ໝາຍໄວ້ເທິງເຄື່ອງວັດແທກ, ລະຫວ່າງ terminals ຫຼືລະຫວ່າງ terminal ແລະດິນແຜ່ນດິນໂລກ.
• ໃຊ້ຄວາມລະມັດລະວັງໃນເວລາທີ່ເຮັດວຽກກັບ voltagສູງກວ່າ 30V AC RMS, 42V ຈຸດສູງສຸດ, ຫຼື 60V DC. ລະດັບສຽງດັ່ງກ່າວtages ເຮັດໃຫ້ເກີດອັນຕະລາຍຊ໊ອກ.
• ກ່ອນການວັດແທກກະແສໄຟຟ້າ, ໃຫ້ແນ່ໃຈວ່າຟິວຂອງມິເຕີຍັງຄົງຢູ່ ແລະ ສາຍທົດສອບໄດ້ເຊື່ອມຕໍ່ກັບຊ່ອງສຽບຂາເຂົ້າທີ່ຖືກຕ້ອງ.
• Disconnect the test leads from the circuit before changing functions or ranges.
• ຢ່າໃຊ້ມິເຕີຖ້າມັນເບິ່ງຄືວ່າເສຍຫາຍ ຫຼື ຖ້າຊັ້ນກັນຄວາມຮ້ອນຂອງສາຍທົດສອບຖືກທຳລາຍ.
• ປ່ຽນແບດເຕີຣີທັນທີທີ່ຕົວຊີ້ວັດຫມໍ້ໄຟຕ່ໍາປະກົດຂຶ້ນເພື່ອຫຼີກເວັ້ນການອ່ານທີ່ບໍ່ຖືກຕ້ອງ.
• ປະຕິບັດຕາມລະຫັດຄວາມປອດໄພທ້ອງຖິ່ນ ແລະແຫ່ງຊາດ.

3. ຜະລິດຕະພັນເກີນview

The Irfora T58B Digital Multimeter features a robust design and a clear LCD display for easy readings.

ຮູບທີ 3.1: ດ້ານໜ້າ view of the Irfora T58B Digital Multimeter with labeled components. Key features include the LED Display, NCV and Buzzer Indicator Light, Gear Rotary Switch, Input Sockets, and various function buttons.

ຮູບທີ 3.2: Dimensions of the Irfora T58B Digital Multimeter. The device measures approximately 187mm (7.36in) in height, 95mm (3.74in) in width, and 55mm (2.16in) in depth.

ຮູບທີ 3.3: ຫລັງ view of the multimeter showing the 90-degree adjustable support stand and integrated storage slots for test leads, designed for convenience and protection.

ຮູບທີ 3.4: ເກີນview of the Irfora T58B Digital Multimeter's capabilities, including 9999 counts display, and measurement of current, resistance, capacitance, temperature, and frequency.

ຄຸນ​ນະ​ສົມ​ບັດ​ທີ່​ສໍາ​ຄັນ​:

• 9999 Counts LCD Digital Display with Backlight
• ການວັດແທກ RMS ທີ່ແທ້ຈິງ
• Vol-Non-Contacttage (NCV) ການກວດຫາ
• ປິດເຄື່ອງອັດຕະໂນມັດ
• Data Hold and Relative Value Measurement
• Flashlight Function for low-light conditions
• ມາດຕະການ AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, and Temperature
• ການທົດສອບ Diode ແລະຄວາມຕໍ່ເນື່ອງ

4. ຕັ້ງຄ່າ

4.1. ການຕິດຕັ້ງຫມໍ້ໄຟ

The Irfora T58B Multimeter requires 3 x 1.5V AAA batteries (not included). To install or replace batteries:

1. ໃຫ້ແນ່ໃຈວ່າມັນຕິມີເຕີປິດຢູ່ ແລະ ຖອດສາຍທົດສອບທັງໝົດອອກຈາກຂົ້ວຕໍ່ຂາເຂົ້າ.
2. ຊອກຫາຝາປິດຊ່ອງໃສ່ຫມໍ້ໄຟຢູ່ດ້ານຫຼັງຂອງເຄື່ອງວັດແທກ.
3. ໃຊ້ໄຂຄວງເພື່ອຄາຍສະກູທີ່ຍຶດຝາປິດແບັດເຕີຣີອອກ.
4. Remove the cover and insert the 3 AAA batteries, observing the correct polarity (+ and -).
5. ໃສ່ຝາປິດແບັດເຕີຣີຄືນ ແລະ ຂັນສະກູໃຫ້ແໜ້ນ.

ໝາຍເຫດ: Remove batteries if the meter is not used for an extended period to prevent leakage.

4.2. ການເຊື່ອມຕໍ່ນໍາການທົດສອບ

Always connect the black test lead to the "COM" (Common) input jack. Connect the red test lead to the appropriate input jack based on the measurement type:

• ສໍາລັບ Voltage, Resistance, Capacitance, Frequency, Diode, and Temperature measurements: Connect the red lead to the "VΩHz°C" jack.
• For Current measurements (up to 600mA): Connect the red lead to the "µA mA" jack.
• For High Current measurements (up to 10A): Connect the red lead to the "10A" jack.

Ensure test leads are fully inserted into the jacks before use.

5. ຄໍາແນະນໍາການດໍາເນີນງານ

To operate the multimeter, turn the Gear Rotary Switch to the desired function. The meter will automatically select the appropriate range in most modes (AUTO function).

5.1. AC/DC Voltage ການວັດແທກ

1. Turn the rotary switch to the "V~" (AC Voltage) ຫຼື "V-" (DC Voltage) ຕໍາແໜ່ງ.
2. Connect the black test lead to the "COM" jack and the red test lead to the "VΩHz°C" jack.
3. ແຕະທີ່ probes ການທົດສອບກັບຈຸດວົງຈອນທີ່ voltage ແມ່ນຈະໄດ້ຮັບການວັດແທກ.
4. ອ່ານ voltage ມູນຄ່າຢູ່ໃນຈໍສະແດງຜົນ LCD.

5.2. ການວັດແທກກະແສໄຟຟ້າ AC/DC

ຂໍ້ຄວນລະວັງ: ຢ່າເຊື່ອມຕໍ່ເຄື່ອງວັດແທກຂະຫນານກັບ voltagແຫຼ່ງໄຟຟ້າເມື່ອວັດແທກກະແສໄຟຟ້າ. ສິ່ງນີ້ສາມາດເຮັດໃຫ້ຟິວຂາດ ຫຼື ເຮັດໃຫ້ແມັດເສຍຫາຍໄດ້.

1. Turn the rotary switch to the "µA mA" or "A" position for AC or DC current. Use the "FUNC" button to switch between AC and DC if necessary.
2. Connect the black test lead to the "COM" jack. Connect the red test lead to the "µA mA" jack for currents up to 600mA, or to the "10A" jack for currents up to 10A.
3. ເປີດວົງຈອນບ່ອນທີ່ຈະວັດແທກກະແສໄຟຟ້າ ແລະ ເຊື່ອມຕໍ່ມິເຕີຕາມລໍາດັບກັບໂຫຼດ.
4. ອ່ານຄ່າປັດຈຸບັນຢູ່ໃນຈໍສະແດງຜົນ LCD.

5.3. ການວັດແທກຄວາມຕ້ານທານ

1. ໝຸນສະວິດໝຸນໄປທີ່ຕຳແໜ່ງ "Ω".
2. Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
3. ໃຫ້ແນ່ໃຈວ່າວົງຈອນຖືກຕັດພະລັງງານກ່ອນທີ່ຈະວັດແທກຄວາມຕ້ານທານ.
4. Touch the test probes across the component or circuit where resistance is to be measured.
5. ອ່ານຄ່າຄວາມຕ້ານທານໃນຈໍສະແດງຜົນ LCD.

5.4. ການວັດແທກຄວາມອາດສາມາດ

1. Turn the rotary switch to the "Capacitance" position (often shared with other functions, use FUNC button if needed).
2. Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
3. Discharge the capacitor completely before measurement to avoid damage to the meter.
4. ແຕະທີ່ເຄື່ອງທົດສອບໃນທົ່ວປ້ຳຂອງຕົວເກັບປະຈຸ.
5. ອ່ານຄ່າ capacitance ໃນຈໍສະແດງຜົນ LCD.

5.5. ການວັດແທກຄວາມຖີ່

1. ໝຸນສະວິດໝຸນໄປທີ່ຕຳແໜ່ງ "Hz".
2. Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
3. Touch the test probes across the circuit where frequency is to be measured.
4. ອ່ານຄ່າຄວາມຖີ່ໃນຈໍສະແດງຜົນ LCD.

5.6. Diode Test and Continuity

1. Turn the rotary switch to the "Diode/Continuity" position. Use the "FUNC" button to toggle between diode test and continuity.
2. Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
3. For Diode Test: Place the red probe on the anode and the black probe on the cathode. The display will show the forward voltagປ່ອຍ e. ປີ້ນໂພຣບ; ຈໍສະແດງຜົນຄວນສະແດງ "OL" (ວົງວຽນເປີດ) ສຳລັບໄດໂອດທີ່ດີ.
4. For Continuity Test: Touch the probes to the circuit points. If resistance is below approximately 50Ω, the buzzer will sound, indicating continuity.

5.7. ເຄື່ອງວັດອຸນຫະພູມ

1. Turn the rotary switch to the "°C/°F" position.
2. Connect the thermocouple (included) to the "VΩHz°C" and "COM" jacks, observing polarity.
3. Place the thermocouple tip on the object or area where temperature is to be measured.
4. Read the temperature value on the LCD display. Use the "FUNC" button to switch between Celsius and Fahrenheit.

5.8. ບໍ່ຕິດຕໍ່ Voltage (NCV) ການກວດຫາ

ຮູບທີ 5.1: Demonstrating NCV (Non-Contact Voltage) detection. The meter's top is placed near an AC voltage source, and the signal strength indicator lights up, accompanied by an audible alarm.

1. ໝຸນສະວິດໝຸນໄປທີ່ຕຳແໜ່ງ "NCV".
2. Place the top of the meter (NCV sensing area) close to the conductor or outlet you suspect has AC voltage.
3. ຖ້າ AC voltage is detected, the corresponding signal strength indicator (low-yellow, high-red) will light up, and the buzzer will emit different frequency alarms based on signal strength.

5.9. ໄຟໜ້າຈໍ ແລະ ໄຟສາຍ

ຮູບທີ 5.2: The multimeter's backlit screen and integrated flashlight illuminate the display and work area, enhancing visibility in dark environments.

Press the "Lighting/Backlight" button (often marked with a light bulb icon) to turn on the display backlight. Press and hold the same button to activate the flashlight located at the top of the meter. Press again to turn off.

5.10. ປິດເຄື່ອງອັດຕະໂນມັດ

ຮູບທີ 5.3: The multimeter features an automatic shutdown function, turning off after approximately 15 minutes of inactivity to conserve battery life.

The multimeter will automatically power off after approximately 15 minutes of inactivity to conserve battery life. An audible voice prompt will sound before shutdown. To restart the meter, press any button or turn the rotary switch.

6. ບໍາລຸງຮັກສາ

6.1. ທໍາຄວາມສະອາດ

ເຊັດແມັດດ້ວຍການໂຄສະນາamp ຜ້າແລະຢາຊັກຜ້າອ່ອນໆ. ຢ່າໃຊ້ສານຂັດຫຼືສານລະລາຍ. ຮັກສາຈຸດປ້ອນຂໍ້ມູນບໍ່ໃຫ້ມີຝຸ່ນ ແລະ ຄວາມຊຸ່ມຊື່ນ.

6.2. ການທົດແທນຫມໍ້ໄຟ

When the low battery indicator appears on the display, replace the batteries as described in Section 4.1. Prompt battery replacement ensures accurate readings.

6.3. ການທົດແທນ Fuse

If the meter fails to measure current, the fuse may be blown. To replace the fuse:

1. ໃຫ້ແນ່ໃຈວ່າມັນຕິມີເຕີປິດຢູ່ ແລະ ຖອດສາຍທົດສອບທັງໝົດອອກ.
2. Open the battery compartment cover as described in Section 4.1.
3. ເອົາຟິວເກົ່າອອກຢ່າງລະມັດລະວັງ.
4. Replace with a fuse of the same type and rating:
   • For µA mA input: F 600mA/250V
   • For 10A input: F 10A/250V
5. ໃສ່ຝາປິດແບັດເຕີຣີຄືນ ແລະ ຂັນສະກູໃຫ້ແໜ້ນ.

7. ການແກ້ໄຂບັນຫາ

ຖ້າບັນຫາຍັງຄົງຢູ່ຫຼັງຈາກພະຍາຍາມແກ້ໄຂເຫຼົ່ານີ້, ໃຫ້ຕິດຕໍ່ຝ່າຍຊ່ວຍເຫຼືອລູກຄ້າ.

8. ຂໍ້ມູນຈໍາເພາະ

The following specifications are for the Irfora T58B Digital Multimeter:

ຂໍ້ມູນຈໍາເພາະທົ່ວໄປ:

• Display: 9999 Counts LCD display
• Safety Rating: CAT III 600V, CAT II 1000V
• Pollution Grade: 2
• Working Height: Under 2000m
• Working Temperature: 0-40°C (<80%RH, not considered <10°C)
• Storage Temperature: -10~60°C (<80%RH, remove battery)
• Test/Calibration Ambient Temperature: 20°C ± 2°C
• ສູງສຸດ Voltage between Measurement End and Ground: 1000V DC or 750V AC
• ການປ້ອງກັນຟິວ:
  • For µA mA input: F 600mA/250V
  • For 10A input: F 10A/250V
• Conversion Rate: Approximately 3 readings/second
• Overload Display: "OL"
• Power Supply: 3 * 1.5V AAA batteries (Not included)
• Item Size: 187 * 95 * 55mm / 7.36 * 3.74 * 2.16in
• Item Weight: 331g / 11.67oz

ລະດັບການວັດແທກ:

• ຊິງຕັນດີຊີ Voltage: 100mV, 600mV, 1V, 60V, 600V, 1000V
• AC Voltage: 100mV, 600mV, 1V, 60V, 600V, 750V
• DC Current: 600µA, 6mA, 60mA, 600mA, 6A, 10A
• AC Current: 600µA, 6mA, 60mA, 600mA, 6A, 10A
• ຄວາມຕ້ານທານ: 600Ω, 6kΩ, 60kΩ, 600kΩ, 6MΩ, 60MΩ
• Capacitance: 6nF, 60nF, 600nF, 6µF, 60µF, 600µF, 6mF, 60mF
• Frequency: 100Hz, 1KHz, 10KHz, 100KHz, 1MHz, 10MHz, 25MHz
• Temperature: -50°C~1000°C / -58°F~1832°F
• ການທົດສອບ Diode: ແມ່ນແລ້ວ
• Buzzer (Continuity): Yes

9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ

For warranty information or technical support, please refer to the purchase platform or contact Irfora customer service directly. Keep your purchase receipt as proof of purchase.

ຂໍ້ມູນຕິດຕໍ່: Please refer to the seller's contact details on the platform where the product was purchased.