Page 2 - International Safety Symbols; WARNING
EX612-en-GB_v2.9 4/15 2 Introduction Congratulations on your purchase of this Extech EX612 True RMS Clamp Meter. This meter measures AC Current, AC/DC Voltage, Resistance, Capacitance, Frequency, Diode Test, Duty Cycle and Continuity. Special features include Dual Input Thermocouple Temperature, and...
Page 3 - Function Maximum
EX612-en-GB_v2.9 4/15 3 SAFETY NOTES Do not exceed the maximum allowable input range of any function. Do not apply voltage to meter when resistance function is selected. Set the function switch OFF when the meter is not in use. Remove the battery if meter is to be stored for longer than 60 d...
Page 4 - Description; Meter Description
EX612-en-GB_v2.9 4/15 4 Description Meter Description 1. Current clamp 2. Clamp opening trigger 3. HOLD/BACKLIGHT button 4. MODE / ZERO button 5. Backlit LCD Display 6. Type K input jacks 7. Multimeter input jacks 8. Function switch 9. PEAK button 10. MAX/MIN button 11. Range button 12. Thermocouple...
Page 5 - Operation; NOTES; Input Shutter; NOTE
EX612-en-GB_v2.9 4/15 5 Operation NOTES : Read and understand all Warning and Caution statements in this operation manual prior to using this meter. Set the function select switch to the OFF position when the meter is not in use. Input Shutter The Input Shutter inhibits simultaneous connection to th...
Page 6 - AC Current Measurements; AC/DC Voltage Measurements; MODE
EX612-en-GB_v2.9 4/15 6 AC Current Measurements WARNING: Disconnect the test leads before making clamp measurements. 1. Rotate the Function switch to the 400A AC position 2. Press the trigger to open jaw. Fully enclose only one conductor. 3. Read the current value in the display. 4. If the value is ...
Page 7 - Resistance Measurements; COM; Continuity Test; Diode Test
EX612-en-GB_v2.9 4/15 7 Resistance Measurements Note: Remove power from the device under test before making resistance measurements 1. Slide the input shutter to the up position. 2. Set the function switch to the position. 3. Insert the black test lead banana plug into the negative COM jack. Inse...
Page 8 - Capacitance Measurements; Frequency and Duty Ratio Measurements
EX612-en-GB_v2.9 4/15 8 Capacitance Measurements WARNING: To avoid electric shock, discharge the capacitor before measuring. 1. Slide the input shutter to the up position. 2. Rotate the function switch to the capacitance position. 3. Insert the black test lead banana plug into the negative COM jac...
Page 9 - A DC/AC Current Measurements; Type K Temperature Measurements; TYPE K
EX612-en-GB_v2.9 4/15 9 A DC/AC Current Measurements 1. Slide the input shutter to the up position. 2. Rotate the function switch to the A position. 3. Press the MODE button to select AC or DC. 4. Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana ...
Page 11 - Maintenance; Cleaning and Storage; Other Battery Safety Reminders; Fuse Replacement
EX612-en-GB_v2.9 4/15 11 Maintenance WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the input terminals, and turn OFF the meter before opening the case. Do not operate the meter with an open case. Cleaning and Storage Periodically wipe the case ...
Page 12 - Specifications
EX612-en-GB_v2.9 4/15 12 Specifications Function Range Resolution Accuracy (% of reading + digits) AC Current 50/60 Hz True RMS 400.0 AAC 0.1A ±(1.5% + 5 digits) 40.00 AAC 0.01A AC/DC A Current 400.00 A 0.01 A DC: ±(1.0% + 2 digits) AC: ±(1.5% + 2 digits) 4000.0 A 0.1 A AC Voltage 50/60 Hz...
Page 13 - Duty Cycle
EX612-en-GB_v2.9 4/15 13 Function Range Resolution Accuracy (% of reading + digits) Frequency (test leads) 40.000Hz 0.001Hz ±(0.3% + 3 digits) 400.00Hz 0.01Hz ±(0.3% + 2 digits) 4000.0Hz 0.1Hz 40.000kHz 0.001kHz 400.00kHz 0.01kHz 4000.0kHz 0.1kHz 40.000MHz 0.001MHz 100.00MHz 0.01MHz Not specified Se...