Klein Tools MM720 Instruction Manual
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Klein Tools MM720 Instruction Manual

Auto-ranging digital multimeter
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1.800.544.2843
ENGLISH
INSTRUCTION MANUAL
Auto-Ranging
Digital Multimeter
True RMS
Measurement
Technology
• HIGH VISIBILITY
DISPLAY
• DATA HOLD
• LOW IMPEDANCE
• AUDIBLE CONTINUITY
• MIN / MAX / RELATIVE
• TEMPERATURE
• DIODE TEST
• CAPACITANCE &
FREQUENCY
1000V
10A
60M
2 m
IP42
www.calcert.com
15
10
20
5
25
0
30
MM720
5000573
CAT IV
CAT III
600V
1000V
sales@calcert.com

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  • Page 1 MM720 ENGLISH INSTRUCTION MANUAL Auto-Ranging Digital Multimeter True RMS Measurement Technology • HIGH VISIBILITY DISPLAY • DATA HOLD • LOW IMPEDANCE • AUDIBLE CONTINUITY • MIN / MAX / RELATIVE • TEMPERATURE • DIODE TEST • CAPACITANCE & FREQUENCY 1000V...

  • Page 2: General Specifications

    ENGLISH GENERAL SPECIFICATIONS Klein Tools MM720 is an automatically ranging true root mean square (TRMS) digital multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, test diodes and continuity. It features a high visibility, reverse contrast LCD display with an optical sensor to automatically optimize viewability in dark or bright ambient lighting.
  • Page 3 ELECTRICAL SPECIFICATIONS VOLTAGE (AUTO-RANGING) Function Range Resolution Accuracy (50–60 Hz) 6.000V 60.00V 10mV ±(1.0% + 3 digits) AC Voltage 600.0V 100mV (V AC) 1000V ±(1.2% + 5 digits) 600.0mV 0.1mV 6.000V ±(0.5% + 5 digits) DC Voltage 60.00V 10mV (V DC) 600.0V 100mV ±(0.8% + 3 digits)

  • Page 4: Electrical Specifications

    ENGLISH ELECTRICAL SPECIFICATIONS CAPACITANCE (AUTO-RANGING) Range Resolution Accuracy 60.00nF 10pF ±(3.5% + 10 digits) 600.0nF 0.1nF 6.000 F ±(3.0% + 5 digits) 60.00 F 10nF 600.0 F 100nF 6000 F ±(3.5% + 5 digits) Maximum Input: 600V DC or 600V AC RMS FREQUENCY (AUTO-RANGING) 9.999Hz 0.001Hz...
  • Page 5 ELECTRICAL SPECIFICATIONS OTHER MEASUREMENT APPLICATIONS Maximum Input: 1000V RMS in Voltage setting, 600V DC or 600V AC RMS in all other settings • Diode Test: 1.5 mA max, open circuit voltage 3.2V DC • Continuity Check: Audible signal when resistance <50Ω •...

  • Page 6: Symbols On Meter

    ENGLISH SYMBOLS ON METER AC/DC Voltage or Current Resistance (in Ohms) Audible Continuity Diode Capacitance Frequency Duty-cycle Double Insulated Class II °F/°C Temperature (Fahrenheit / Celsius) Ground Voltage Apmerage (Amps) Backlight Microamps Select Low Impedence Fuse (with rating below symbol) Warning or Caution Read Instructions To ensure safe operation and service of this meter, follow all warnings...

  • Page 7: Feature Details

    FEATURE DETAILS NOTE: There are no user-serviceable parts inside meter. 6000 count Reverse Contrast Display "RANGE" button Function selector switch "REL" (Relative) button "10A" jack "MAX/MIN" button "COM" jack "HOLD"/Backlight button "V " jack "SEL" (Select) button "mA/µA" jack Optical Sensor 1.800.544.2843 www.calcert.com sales@calcert.com...

  • Page 8: Function Buttons

    ENGLISH FUNCTION BUTTONS ON/OFF To Power ON the meter rotate the Function Selector switch from the OFF setting to any measurement setting. To Power OFF the meter rotate the Function Selector switch to the OFF setting. By default the meter will automatically Power OFF after 5 minutes of inactivity. Reactivate meter by pressing any button.

  • Page 9: "Max/Min" Button

    FUNCTION BUTTONS "REL" (RELATIVE) BUTTON Relative measurements are available for Voltage, Current, Resistance, Temperature, Capacitance and LoZ. 1. Perform first measurement. 2. With test leads connected, press REL to set frame of reference. 3. Perform second measurement. The value displayed is the difference between first and second measurements.
  • Page 10 ENGLISH OPERATING INSTRUCTIONS CONNECTING TEST LEADS Do not test if leads are improperly seated. Results could cause intermittent display readings. To ensure proper connection, firmly press leads into the input jack completely. INCORRECT CORRECT TESTING IN CAT III / CAT IV MEASUREMENT LOCATIONS Ensure the test lead shield is pressed firmly in place.
  • Page 11 OPERATING INSTRUCTIONS AC/DC VOLTAGE (LESS THAN 1000V) 1. Insert RED test lead into V jack , and BLACK test lead into COM jack , and rotate function selector switch to the V setting. NOTE: The meter defaults to AC measurement. To measure DC, press the "SEL"...
  • Page 12 ENGLISH OPERATING INSTRUCTIONS AC/DC CURRENT NOTE: The meter defaults to AC measurement. To measure DC, press the "SEL" button to toggle between AC and DC modes. The AC or DC icon on the LCD indicates which mode is selected. 1. Attach test leads to the appropriate jacks and rotate function selector switch to the appropriate setting as follows: •...

  • Page 13: Resistance Measurements

    OPERATING INSTRUCTIONS 2. To measure current: Remove power from circuit, open circuit at measurement point, connect meter in-series in the circuit using the test leads, and apply power to circuit.The meter will auto- range to display the measurement in the most appropriate range. Do not attempt to measure more than 10A.

  • Page 14: Diode Test

    ENGLISH OPERATING INSTRUCTIONS Black lead Red lead NOTE: When in a Resistance setting and the test leads are open (not connected across a resistor), or when a failed resistor is under test, the display will indicate O.L. This is normal. DO NOT attempt to measure resistance on a live circuit.

  • Page 15: Frequency / Duty-Cycle

    OPERATING INSTRUCTIONS CAPACITANCE 1. Insert RED test lead into V jack , and BLACK test lead into COM jack , and rotate function selector switch to the Continuity/Resistance/Diode/Capacitance setting. NOTE: The meter defaults to Continuity testing in this mode. To enter Capacitance testing mode, press the "SEL"...
  • Page 16 ENGLISH OPERATING INSTRUCTIONS TEMPERATURE 1. Insert K-type thermocouple with adapter into the V and COM jacks (observe polarity markings on thermocouple and meter), and rotate function selector switch to the Temperature setting. NOTE: The meter defaults to Fahrenheit scale in this mode. To enter Celsius scale, press the "SEL"...

  • Page 17: Maintenance

    MAINTENANCE BATTERY REPLACEMENT When the indicator is displayed, the batteries must be replaced. 1. Remove screw from battery/fuse door. 2. Replace 2 x AAA batteries (note proper polarity). 3. Replace battery/fuse door and fasten securely with screw. FUSE REPLACEMENT A fuse may blow if more than 800mA is applied to the A/mA jack or more than 10A is applied to the 10A jack .

  • Page 18: Warranty

    ENGLISH ESPAÑOL CLEANING Be sure meter is turned off and wipe with a clean, dry lint-free cloth. Do not use abrasive cleaners or solvents. STORAGE Remove the batteries when meter is not in use for a prolonged period of time. Do not expose to high temperatures or humidity.

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