UNI-T UT60S Digital Multimeter User Manual

Features

• True RMS measurement for accurate readings on non-sinusoidal waveforms.
• Large, backlit LCD display for clear visibility.
• Auto-ranging for user convenience.
• Built-in LED flashlight for working in dark environments.
• Non-contact voltage (NCV) detection.
• Diode and continuity testing with buzzer.
• Durable design with protective holster.
• Low battery indication.
• Auto power off to conserve battery life.

Safety Instruction

⚠️ Please read this manual carefully before operating the multimeter. Failure to follow safety precautions may result in electric shock, fire, or personal injury.

• This multimeter is designed for use in environments with pollution degree 2.
• It complies with IEC/EN61010-1 and CAT II 1000V / CAT III 600V safety standards.
• Ensure the test leads are in good condition and properly connected.
• Do not measure voltage higher than the rated limit.
• Always discharge capacitors before measuring resistance or capacitance.
• Avoid measuring in high humidity, flammable, explosive, or strong magnetic field environments.
• Do not use the meter if it is damaged or if the battery is low.

Compliance: CE, RoHS, WEEE

Electrical Symbols

Operating Instructions

1. AC/DC Voltage Measurement (Figure 2)

Instructions:

1. Turn the dial to the desired AC (V~) or DC (V) voltage range.
2. Insert the red test lead into the "VΩHz" terminal and the black test lead into the "COM" terminal.
3. Connect the test leads to the circuit under test in parallel.
4. Read the measurement result from the LCD.

⚠️ Warning: Do not measure voltage over 1000V or if any damage to the multimeter is apparent.

Figure 2 Description: The diagram shows the UNI-T UT60S multimeter connected in parallel to a power source (e.g., battery or outlet) to measure AC or DC voltage. The red probe is in the VΩHz jack, and the black probe is in the COM jack. The LCD displays the voltage reading.

2. Resistance Measurement (Figure 3)

Instructions:

1. Turn the dial to the desired resistance (Ω) range.
2. Insert the red test lead into the "VΩHz" terminal and the black test lead into the "COM" terminal.
3. Connect the test leads across the component to be measured. Ensure the circuit is powered off and discharged.
4. Read the measurement result from the LCD.

⚠️ Warning: Before measuring resistance, switch off the power supply of the circuit and discharge all capacitors. If measuring high resistance, it is normal for the reading to be unstable for a few seconds.

Figure 3 Description: The diagram shows the UNI-T UT60S multimeter connected in parallel across a resistor to measure its resistance. The red probe is in the VΩHz jack, and the black probe is in the COM jack. The LCD displays the resistance reading.

3. Continuity Test (Figure 3)

Instructions:

1. Turn the dial to the continuity (⏚) range.
2. Insert the red test lead into the "VΩHz" terminal and the black test lead into the "COM" terminal.
3. Connect the test leads to the component to be tested.
4. If the resistance is less than approximately 50Ω, the buzzer will sound ?, and the LED will light up green. If the resistance is between 50Ω and 1000Ω, the LED will light up yellow. If the resistance is above 1000Ω, the LED will light up red, and the buzzer will not sound.

⚠️ Warning: Ensure the circuit is powered off and discharged before performing a continuity test.

4. Capacitance Measurement (Figure 3)

Instructions:

1. Turn the dial to the capacitance (⏀) range.
2. Insert the red test lead into the "VΩHz" terminal and the black test lead into the "COM" terminal.
3. Connect the test leads across the capacitor to be measured. Observe polarity for electrolytic capacitors.
4. Read the measurement result from the LCD.

⚠️ Warning: Ensure the capacitor is discharged before measurement. For capacitance values ≤100nF, it is recommended to use the REL (Relative) mode for better accuracy.

5. Temperature Measurement (Figure 3)

Instructions:

1. Turn the dial to the temperature (°C/°F) range.
2. Insert the K-type thermocouple's positive (+) probe into the "VΩHz" jack and the negative (-) probe into the "COM" jack.
3. Place the thermocouple probe tip on the object whose temperature you want to measure.
4. Read the temperature from the LCD.

⚠️ Warning: The K-type thermocouple is only applicable for temperature measurements below 250°C/482°F. Ensure the circuit is powered off and discharged before connecting the thermocouple.

Figure 3 Description (continued for Temp): The diagram shows the UNI-T UT60S multimeter with a K-type thermocouple connected. The red probe is in the VΩHz jack, and the black probe is in the COM jack. The thermocouple tip is placed on an object to measure its temperature.

6. AC Current Measurement (Figure 4a, 4b)

Instructions:

1. Turn the dial to the desired AC current (A~) range.
2. Insert the red test lead into the "mA" or "A" terminal (depending on the expected current range) and the black test lead into the "COM" terminal.
3. Connect the test leads in series with the circuit where the current is to be measured.
4. Read the measurement result from the LCD.

⚠️ Warning: Ensure the circuit is powered off before connecting the meter in series. Do not connect the test leads in parallel for current measurement, as this can damage the meter or the circuit.

Figure 4a/4b Description: The diagrams show the UNI-T UT60S multimeter connected in series with a load to measure AC current. The red probe is inserted into the appropriate current input jack (mA or A), and the black probe is in the COM jack. The LCD displays the AC current reading.

7. DC Current Measurement (Figure 5)

Instructions:

1. Turn the dial to the desired DC current (A) range.
2. Insert the red test lead into the "A" terminal and the black test lead into the "COM" terminal.
3. Connect the test leads in series with the circuit where the current is to be measured.
4. Read the measurement result from the LCD.

⚠️ Warning: Ensure the circuit is powered off before connecting the meter in series. Do not connect the test leads in parallel for current measurement, as this can damage the meter or the circuit.

Figure 5 Description: The diagram illustrates the UNI-T UT60S multimeter connected in series with a load to measure DC current. The red probe is in the 'A' jack, and the black probe is in the 'COM' jack. The LCD displays the DC current reading.

8. Frequency Measurement (Figure 6)

Instructions:

1. When measuring AC voltage/current, press the 'Hz/%' button to enter frequency or duty cycle measurement mode.
2. Insert the red test lead into the "VΩHz" terminal, black test lead into the "COM" terminal, and connect the test leads to both ends of the signal source in parallel.
3. Read the test result from the LCD.

⚠️ Warning: The output signal of the measurement should be less than 30V, otherwise the measurement accuracy will be affected.

Figure 6 Description: The diagram shows the UNI-T UT60S multimeter connected in parallel to a signal source to measure its frequency. The red probe is in the VΩHz jack, and the black probe is in the COM jack. The LCD displays the frequency reading.

9. Non-Contact Voltage (NCV) Sensing (Figure 7)

Instructions:

1. To sense whether there is AC voltage or electric field in the space, short press the NCV button.
2. When the top-left end of the meter gets close to a charged object (about 100V), the LCD will display segments to indicate the intensity of the electric field. Simultaneously, the buzzer will beep ? and the LED will flash ?. The intensity is indicated by the number of segments displayed: "-" (low), "--" (medium), "---" (high), "----" (very high). As the intensity increases, the frequency of the buzzer beeping and LED flashing also increases.

Figure 7 Description: The diagram shows the UNI-T UT60S multimeter being used for NCV detection. The top-left end of the meter is held near a wire or object. The LCD shows segments indicating the strength of the detected electric field, and the buzzer and LED are activated.

10. Others

• Auto Power Off: The meter automatically shuts down after 15 minutes of inactivity to save power. Press and hold the power button to wake it up. To disable auto-off, press and hold the power button while turning on the meter until "POFF" is displayed.
• Button Press: The buzzer beeps once for each valid button press.
• Buzzer Alarm: The buzzer sounds continuously when input voltage ≥990.0V or input current >9.900A, indicating a range limit. The alarm also sounds at ≥10A for AC current.
• Auto Power Off Reminder: The buzzer makes three consecutive beeps about 1 minute before auto power off, and one long beep when the meter shuts down.
• Low Battery Detection:
  • When battery voltage < 3.6V, the "+" symbol is displayed, and the meter still works.
  • When battery voltage < 3.0V, the "+" symbol is displayed after power-on, and the meter cannot work.

Technical Specifications

Accuracy: ± (a% of reading + b digits), 1 year warranty

Ambient Temperature: 23°C±5°C (73.4°F±9°F)

Relative Humidity: ≤75%

⚠️ Warning: To ensure measurement accuracy, the operating temperature should be within 18°C~28°C and the fluctuation range should be within ±1°C.

Temperature Coefficient: 0.1 x (specified accuracy)/°C (for temperatures outside 18°C~28°C)

1. DC Voltage

Input Impedance: About 10MΩ. Unstable digits display when the circuit is open in mV range; digits stabilize (≤ ±3 digits) after connecting to the load.

Max Input Voltage: ±999.9V. "OL" is displayed at >1000V.

Overload Protection: 1000Vrms (DC/AC).

2. AC Voltage

Input Impedance: About 10MΩ.

Frequency Response: 40Hz~400Hz, sine wave RMS (mean response).

Max Input Voltage: AC 1000V. "OL" is displayed at >1010V.

Overload Protection: 1000Vrms (DC/AC).

3. Resistance

Note: Measurement result = displayed value - resistance of shorted test leads.

Overload Protection: 1000V.

4. Continuity and Diode

Overload Protection: 1000Vrms (DC/AC).

5. Capacitance

Note: For capacitance ≤100nF, it is recommended to use REL mode to ensure measurement accuracy.

Overload Protection: 1000Vrms (DC/AC).

6. Temperature

Note: K-type thermocouple is only applicable to the measurement of temperature below 250°C/482°F.

Overload Protection: 1000Vrms (DC/AC).

7. DC Current

Note: The alarm sounds at ≥10A. "OL" is displayed at >10.00A.

Overload Protection: 1000Vrms.

8. AC Current

Frequency response: 40Hz~400Hz.

Display: RMS.

Note: Accuracy: 5%~100% of the range, zeroing at short circuit. The alarm sounds at ≥9.9A, "OL" is displayed at >10A.

Overload Protection: 1000Vrms.

9. Frequency

Note: Voltage range (mV): 200mVrms ≤ input amplitude ≤ 30Vrms, the duty cycle is only applicable to the measurement of square wave at ≤1kHz, 1.0%-99.0%.

Voltage range (V): input amplitude ≥5Vrms, the duty cycle is only applicable to the measurement of square wave at ≤1kHz, 10%-90%.

Current range (A): 10% of the maximum input amplitude, the duty cycle is only applicable to the measurement of square wave at ≤1kHz, 10%-90%.

Frequency range of slave display: 40Hz~1KHz, the amplitude is same as main display.

Overload Protection: 1000Vrms (DC/AC).

Maintenance

⚠️ Warning: Switch off the power supply and remove the test leads before opening the rear cover.

1. General Maintenance

1. Clean the meter casing with a damp cloth and mild detergent. Do not use abrasives or solvents.
2. If there is any malfunction, stop using the meter and send it for maintenance.
3. The maintenance and service must be implemented by qualified professionals or designated departments.

2. Battery/Fuse Replacement (Figure 8)

1) Battery Replacement

1. Power off the meter, remove the test leads from the input terminals, and remove the protective cover.
2. Unscrew and remove the battery cover.
3. Replace with 3×1.5V AAA batteries, observing correct polarity.
4. Secure the battery cover and tighten the screw.

2) Fuse Replacement

1. Power off the meter, remove the test leads from the input terminals, and remove the protective cover.
2. Unscrew and remove the rear cover.
3. Replace the blown fuse (specifications: Fuse 10A/1000V $6.35×32mm ceramic tube).
4. Secure the rear cover and tighten the two screws.

Figure 8 Description: The diagram shows the rear of the UNI-T UT60S multimeter. It indicates the location of the screws for the rear cover, the battery cover, the battery compartment, and the fuse holder. The kickstand is also visible.