ZOYI ZT-5BQ Digital Clamp Multimeter User Manual

Introduction

This product is a battery-powered, true-rms, auto ranging digital clamp multimeter with a 6000 counts LCD display and a backlight.

Safety Information

To avoid possible electrical shock, fire, or personal injury, please read all safety information before you use the product.

• Do NOT exceed the "maximum value" indicated in the Specification.
• Examine the connection of the test leads and the insulation of the product before measuring voltage higher than 36V DC or 25V AC.
• Disconnect the test leads from the circuit before changing the mode.
• Misuse of mode or range can lead to hazards, be cautious. "OL" will be shown on the display when the input is out of range.
• Safety symbols: Hazardous Voltage [!] Double Insulated [?️] Risk of Danger. Check the User Manual. [ⓘ] Low Battery [?] N/ L Wire Judgement [⚡]

Specifications

Electrical Specifications

General Specifications

Front Panel

The front panel features the following components:

1. Jaw: For clamping around a conductor to measure current.
2. Flashlight: For illuminating the measurement area.
3. Jaw release: Lever to open the clamp jaws.
4. Hold / Inrush Current / Peak Hold button: Press once for HOLD [⏸️], twice for INRUSH [?], or twice after connecting leads for Peak Hold [?].
5. Power / Select button: Press for >2 seconds to turn on/off. Short press to switch functions.
6. Frequency / NCV button: Press >2 seconds to enter NCV [⚡] mode.
7. LCD display: Shows measurement readings and status.
8. COM: Common terminal for test leads.
9. Input terminal: For voltage [V], resistance [Ω], capacitance [?️], temperature [?️], frequency [Hz], continuity [?], diode [?], and N/L wire measurements.
10. Wire to be measured: Position for accurate current measurement.
11. Marked position: Guides for optimal wire placement within the jaws.

Instructions

Measure AC/DC Voltage

1. Minimum voltage measurable is 0.8V.
2. Connect the black test lead to COM and the red test lead to the input terminal [input terminal].
3. The meter automatically selects AC or DC voltage.
4. Touch probes to test points.
5. Read the voltage on the display.

Caution: Do not measure voltage exceeding MAX Value or touch high voltage circuits during measurement.

Measure AC Current Only

1. Ensure probes are not in jacks; turn power on.
2. Push jaw release, center wire within clamp jaws at the marked position for accuracy.
3. Read current on the display.

Caution: Do not measure current exceeding MAX Value. Measure one wire at a time.

Measure Resistance

1. Connect black test lead to COM and red test lead to the input terminal [input terminal].
2. Resistance is auto-ranging.
3. Touch probes to test points.
4. Read resistance on the display.

Caution: Disconnect power and discharge capacitors before testing resistance. Do not input voltage in Resistance Mode.

Measure Continuity / Diode

1. Connect black test lead to COM and red test lead to the input terminal [input terminal].
2. Press SEL/Power once to toggle to Continuity/Diode Mode.
3. Touch probes to test points.
4. A beep [?] indicates resistance below 50Ω, and an indicator light will be on.
5. For diode measurement: Connect red probe to anode and black probe to cathode.
6. Read forward biased voltage [?]. "OL" indicates reversed polarity or a broken diode.

Caution: Do not input voltage in Continuity/Diode Mode.

Measure Capacitance

1. Discharge all capacitors before testing.
2. Connect black test lead to COM and red lead to the input terminal [input terminal].
3. Press Power button twice to enter Capacitance Mode [?️].
4. Connect red probe to anode and black probe to cathode of the capacitor.
5. Read measured capacitance.

Measure Frequency

1. Connect black test lead to COM and red test lead to the input terminal [input terminal].
2. Press Hz/NCV button once for AC current frequency [Hz] (without leads connected).
3. Press Hz/NCV button once to enter Frequency Mode for DC voltage frequency [Hz] (with leads connected).
4. Touch probes to test points.
5. Read measured frequency.

Measure NCV (Non-Contact Voltage)

1. Press Hz/NCV for over 2 seconds to toggle to NCV [⚡] Mode.
2. Move the product near AC voltage sources; the beeper sounds when voltage is detected. Faster beeps indicate stronger voltage.
3. To judge Live (L) and Neutral (N) lines: Insert red probe into terminal, touch Live/Neutral lines with black probe. Stronger beeps indicate the Live line.

Measure Temperature

1. Connect black thermocouple probe to COM and red thermocouple probe to the input terminal [input terminal].
2. Press SEL/POWER once to toggle to Temperature Mode [?️]. Display shows room temperature. Press SEL/POWER again to switch between °C/°F.
3. Touch probes to test points.
4. Read measured temperature.

Caution: Do not input voltage in Temperature Mode.

Measure Inrush Current

1. Turn power on, pull out probes, press HOLD [⏸️] twice to toggle to Inrush Current Mode (display shows "INRUSH" [?]).
2. Push jaw release, center wire within clamp jaws at the marked position.
3. Turn on engine/motor; the product captures max current within 100ms during startup.
4. Read measured current.

Peak Hold

1. Turn power on, and press HOLD [⏸️] once (after connecting leads) to toggle to Peak Hold Mode (display shows "PEAK HOLD" [?]).
2. Touch probes to test points.
3. Read measured voltage.

Auto Power Off

1. The product powers off automatically after 15 minutes of inactivity.
2. A beeper sounds 5 times 1 minute before power off.
3. Press SELECT to restart.
4. To disable Auto Power Off [?]: Hold Hz/NCV while turning on the product; five beeps confirm disabling.

General Maintenance

Do not attempt repairs unless qualified. Follow calibration and service instructions.

1. Avoid operating in hot, wet, flammable, explosive, or magnetic environments.
2. Clean with a damp cloth and mild detergent; avoid abrasives or solvents.
3. Remove input signals before cleaning.
4. Remove batteries if not using for a long time.
5. When the low battery symbol [?] is shown, replace batteries: Loosen screw, remove cover, replace with new batteries, replace cover and screw.
6. Replace fuses with the same type as original ones.

Link to Bluetooth App

1. Turn on the power.
2. Short press "Power" and "Hz" simultaneously; screen shows "> " symbol.
3. Open "e-Bull" mobile app and search for "Bluetooth DMM" to link.
4. Refer to the Bluetooth App for detailed explanations.

Troubleshooting

If the product does not function normally, try these steps. Contact your dealer if the problem persists.

Limited Warranty and Limitation of Liability

Customers receive a one-year warranty from the date of purchase. This warranty excludes fuses, disposable batteries, and damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions. Specifications are subject to change without notice.