MH16 Digital Multimeter Megohmmeter User Manual

1. Introduktion

The TOOLTOP MH16 Digital Multimeter Megohmmeter is a battery-powered insulation resistance tester designed for professional use. This versatile instrument can accurately measure DC voltage, AC voltage, resistance, and insulation resistance. It offers three selectable test voltages for insulation resistance: 500V, 1000V, and 2500V, making it suitable for a wide range of applications.

Key features include automatic discharge, automatic shutdown, a clear backlight display, data saving capabilities, and a low battery warning, ensuring ease of use and reliable performance. Its robust design and precision make it an essential tool for electrical testing and maintenance.

Figure 1: The MH16 Digital Multimeter Megohmmeter with its test leads, highlighting its primary function as a resistance tester.

2. Sikkerhedsoplysninger

ADVARSEL: Always read and understand all safety information and operating instructions before using this instrument. Failure to do so may result in serious injury or death.

• This instrument is designed for measuring high voltages. Always exercise extreme caution when working with electrical circuits.
• Bær altid passende personligt beskyttelsesudstyr (PPE), including high-voltage insulating gloves, safety glasses, and protective clothing, when performing insulation resistance tests or working with high voltage.
• Ensure the circuit under test is completely de-energized and isolated before connecting the tester, especially for insulation resistance measurements.
• Do not use the instrument if it appears damaged or if the test leads are frayed or broken.
• Do not operate the instrument in wet environments or explosive atmospheres.
• Frakobl altid testledningerne fra kredsløbet, før du ændrer funktioner eller områder.
• The instrument features automatic discharge. However, always verify that the circuit is fully discharged before touching any components after a high-voltage test.
• Refer to the specifications for maximum input ratings for each function. Do not exceed these ratings.

Figure 2: Performing an insulation resistance test. Note the critical safety reminder: "Before testing, make sure that the circuit under test has no electrical presence, and the tester must wear a pair of high-voltage insulating gloves."

3. Produktet er slutview og komponenter

Familiarize yourself with the various parts and controls of your MH16 Digital Multimeter Megohmmeter for optimal operation.

Figure 3: Detailed diagram of the MH16's components and their functions.

1. Line Terminal L: Input terminal for measurements.
2. Shielded Terminal G/AC Voltage Measurement Ground Terminal: Common ground for AC voltage målinger.
3. AC og DC Voltage Measurement V Terminal: Input terminal for AC and DC voltage målinger.
4. Ground Terminal E: Earth ground terminal for insulation resistance tests.
5. External Power Jack: For connecting an external power supply.
6. Baggrundsbelyst digitalt display: Viser måleaflæsninger og indikatorer.
7. Instrument Strap Hole: For attaching a shoulder strap for hands-free operation.
8. TEST knap: Høj voltage start button for insulation resistance tests.
9. HOLD knap: Data hold button to freeze the current reading on the display.
10. BLCTR Button: Backlight control button.
11. Høj voltage Indikator: Illuminates when high voltage er til stede.
12. Afbryderen: Turns the instrument ON/OFF.
13. Funktionsknapper: Drejeknap til valg af målefunktioner.
14. 2500V Insulation Resistance: Selects 2500V test voltage for insulation resistance.
15. 1000V Insulation Resistance: Selects 1000V test voltage for insulation resistance.
16. 500V Insulation Resistance: Selects 500V test voltage for insulation resistance.
17. ACV AC Voltage: Vælger AC voltage målefunktion.
18. DCV DC Voltage: Selects DC voltage målefunktion.

Figure 4: The MH16 features a durable silicone sheath, providing anti-drop protection and safeguarding the internal hardware from damage.

4. Opsætning

4.1. Batteriinstallation

The MH16 is powered by 6 x 1.5V AA batteries. To install or replace batteries:

1. Sørg for, at instrumentet er slukket.
2. Find batterirummet på bagsiden af ​​enheden.
3. Åbn batterirummets dæksel.
4. Isæt 6 AA-batterier, og overhold den korrekte polaritet (+/-) som angivet inde i batterirummet.
5. Luk batterirummets dæksel forsvarligt.

4.2. Tilslutning af testledninger

Connect the provided test leads to the appropriate input terminals on the MH16 based on the measurement you intend to perform. Always ensure a secure connection.

Figure 5: The MH16 comes with essential accessories including test leads, a user manual, and a protective carrying case.

5. Betjeningsvejledning

Before any measurement, ensure the instrument is powered on by rotating the Power Switch (12) to the ON position.

5.1. Measuring Insulation Resistance

This function is used to measure the insulation resistance of electrical equipment and wiring.

1. Sikkerhed først: Ensure the circuit under test is completely de-energized and isolated before connecting the tester. Wear high-voltage isolerende handsker.
2. Rotate the Function Knob (13) to the desired insulation resistance test voltage (500V, 1000V eller 2500V).
3. Tilslut testledningerne:
   • Connect the red test lead to the Line Terminal L (1).
   • Connect the black test lead to the Ground Terminal E (4).
4. Tryk og hold på PRØVE button (8) to initiate the high voltage output. The High Voltage Indicator (11) will illuminate.
5. Read the insulation resistance value on the Backlit Digital Display (6).
6. Slip PRØVE button to stop the high voltage output. The instrument will automatically discharge the circuit. Wait for the discharge to complete before disconnecting.

5.2. Måling af DC-volumentage (DCV)

Used for measuring direct current voltage.

1. Rotate the Function Knob (13) to the DCV position (18).
2. Connect the red test lead to the AC and DC Voltage Measurement V Terminal (3).
3. Connect the black test lead to the Shielded Terminal G/AC Voltage Measurement Ground Terminal (2).
4. Apply the test leads across the DC voltage kilde.
5. Læs DC voltage -værdi på displayet.

5.3. Måling af AC Voltage (ACV)

Used for measuring alternating current voltage.

1. Rotate the Function Knob (13) to the ACV position (17).
2. Connect the red test lead to the AC and DC Voltage Measurement V Terminal (3).
3. Connect the black test lead to the Shielded Terminal G/AC Voltage Measurement Ground Terminal (2).
4. Apply the test leads across the AC voltage kilde.
5. Læs AC voltage -værdi på displayet.

5.4. Datahold og baggrundsbelysning

• HOLD Button (9): Press this button to freeze the current reading on the display. Press it again to release the hold function.
• BLCTR Button (10): Press this button to turn the display backlight ON or OFF, improving visibility in low-light conditions.

5.5. Automatisk nedlukning

The MH16 features an automatic shutdown function to conserve battery life. If the instrument is idle for approximately 15 minutes, it will automatically power off. To resume operation, simply turn the Power Switch (12) OFF and then ON again.

6. Vedligeholdelse

6.1. Rensning

For at rengøre instrumentet skal du tørre kabinettet af med adamp en klud og et mildt rengøringsmiddel. Brug ikke slibemidler eller opløsningsmidler. Sørg for, at instrumentet er helt tørt før brug.

6.2. Udskiftning af batteri

When the low battery warning indicator appears on the display, replace all 6 AA batteries promptly to ensure accurate measurements and proper operation. Refer to section 4.1 for battery installation instructions.

6.3. Opbevaring

If the instrument is not to be used for an extended period, remove the batteries to prevent leakage and damage. Store the instrument in a cool, dry place, away from direct sunlight and extreme temperatures.

7. Fejlfinding

If you encounter issues with your MH16, refer to the following common problems and solutions:

8. Specifikationer

Detailed technical specifications for the MH16 Digital Multimeter Megohmmeter.

Figure 6: Comprehensive table detailing the functions, measurement ranges, and precision of the MH16, along with insulation resistance parameters.

Generelle specifikationer:

• Modelnummer: TT-Aneng-MH16
• Mærke: VÆRKTØJ TOP
• Strømkilde: 6 x 1.5 V AA-batterier
• Automatisk nedlukning: Cirka 15 minutters inaktivitet
• Dataopbevaring: Ja
• Baggrundsbelyst skærm: Ja
• Lav strømprompt: Ja
• Automatisk afladning: Ja
• Materiale: ABS/Silicone
• Varens vægt: 1 Kilogram (approx. 2.2 Pounds)
• Pakkedimensioner: 7.87 x 5.91 x 3.94 tommer
• Farve: Flerfarvet
• Specifikation opfyldt: CE, RoHS
• Oprindelsesland: Kina

Measurement Ranges and Precision:

Insulation Resistance Parameters:

Bemærk: Parametrene er kun til reference, og de faktiske målinger af det specifikke udstyr er gældende.

9. Garanti og support

9.1. Garantioplysninger

The TOOLTOP MH16 Digital Multimeter Megohmmeter comes with a 1-year EU spare part availability duration from the date of first availability (April 21, 2025). For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact the manufacturer directly.

9.2. Kundesupport

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact TOOLTOP Official customer support. Refer to your product packaging or the seller's information on the purchase platform for contact details.

Fabrikant: VÆRKTØJ TOP