User's Guide 400Amp True RMS AC/DC Clamp Meter with IR Thermometer Model EX623

EX623-EU-EN v2.9 11/13 10Non-Contact InfraRed Temperature Measurements 1. Rotate the function switch to the IR position. 2. Press the MODE button

EX623-EU-EN v2.9 11/13 11Data Hold To freeze the LCD reading, press the HOLD button. While data hold is active, the HOLD icon appears on the LCD. Pr

EX623-EU-EN v2.9 11/13 12Maintenance WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the input

EX623-EU-EN v2.9 11/13 13Specifications Function Range Resolution Accuracy (% of reading + digits) AC Current 50/60 Hz True RMS 400.0 AAC 0.1A ±(

EX623-EU-EN v2.9 11/13 14Function Range Resolution Accuracy (% of reading + digits) Frequency (test leads) 40.000Hz 0.001Hz ±(0.3% + 3 digits) 40

EX623-EU-EN v2.9 11/13 15General Specifications Clamp jaw opening 32mm (1.25") approx. Display Dual 40,000/4,000 count backlit LCD Non-Contac

EX623-EU-EN v2.9 11/13 2 Introduction Congratulations on your purchase of this Extech EX623 True RMS Clamp Meter. This meter measures AC Current, DC

EX623-EU-EN v2.9 11/13 3 SAFETY NOTES  Do not exceed the maximum allowable input range of any function.  Do not apply voltage to meter when resi

EX623-EU-EN v2.9 11/13 4 Description Meter Description 1. Current clamp 2. Clamp opening trigger 3. IR thermometer and Laser Button 4. HOLD/BACKLI

EX623-EU-EN v2.9 11/13 5 Operation NOTES: Read and understand all Warning and Caution statements in this operation manual prior to using this meter.

EX623-EU-EN v2.9 11/13 6 AC/DC Current Measurements WARNING: Disconnect the test leads before making clamp measurements. 1. Rotate the Function

EX623-EU-EN v2.9 11/13 7 Resistance Measurements Note: Remove power from the device under test before making resistance measurements 1. Slide the i

EX623-EU-EN v2.9 11/13 8 Capacitance Measurements WARNING: To avoid electric shock, discharge the capacitor before measuring. 1. Slide the input s

EX623-EU-EN v2.9 11/13 9 A DC/AC Current Measurements 1. Slide the input shutter to the up position. 2. Rotate the function switch to the A pos