User's Guide Extech 700 Series 800 Amp Clamp Meters EX710 AC Clamp meter EX720 True RMS AC Clamp meter EX730 AC/DC True RMS Clamp meter
Introduction Congratulations on your purchase of the Extech 700 Series Clamp meter.
Safety International Safety Symbols This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information. This symbol, adjacent to a terminal, indicates that, under normal use, hazardous voltages may be present Double insulation 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.
Description Meter Description (EX730 pictured) 1. Current clamp 2. Clamp opening trigger 3. Control buttons: 1 Data Hold Mode Peak Backlight Backlit LCD Display 5. COM negative input jack for black test lead 6. Rotary function switch 7. V·Ω·CAP·TEMP·Hz· lead 6 2 DCA Zero (EX730 only) 4.
Specifications Function AC Current Range & Resolution Accuracy (% of reading + digits) EX720 EX710 EX730 40.00A AC ± (2.8% + 10d) ± (2.5% + 10d) ± (5% + 10d) 400.0A AC ± (2.8% + 8d) ± (2.5% + 8d) ± (5% + 10d) True RMS on EX720 & EX730 800A AC ± (3.0% + 8d) ± (2.8% + 5d) ± (2.8% + 10d) DC Current 40.00A DC EX730 only 400.0A DC NA NA ± (1.5% + 10d) ± (1.0% + 10d) ± (1.0% + 10d) ± (1.8% + 8d) ± (1.5% + 5d) ± (1.5% + 5d) 600V AC ± (2.5% + 8d) ± (2.0% + 5d) ± (2.0% + 5d) 400.
Function Range and Resolution Temperature Accuracy (% of reading + digits) EX710 EX720 o NA ± (3%rdg + 9 F) o NA ± (3%rdg + 5 C) -4 to 1400 F -20 to 760 C EX730 o ± (3%rdg + 9 F) o o ± (3%rdg + 5 C) o General Specifications Clamp jaw opening 1.2" (30mm) approx. Display 3-3/4 digits (4000 counts) backlit LCD Continuity check Threshold 40Ω; Test current < 0.5mA Diode test Test current of 0.
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. AC/DC Current Measurements (DC Current on Model EX730 only) WARNING: Ensure that the test leads are disconnected from the meter before making current clamp measurements. 1. Set the Function switch to the 800A, 400A, or 40A range. If the approx.
Resistance Measurements 1. Insert the black test lead into the negative COM terminal and the red test lead into the V·Ω·CAP·TEMP·Hz· positive terminal. 2. Set the function switch to the Ω position. 3. Touch the test probe tips across the circuit or component under test. 4. Read the resistance on the LCD display. Capacitance Measurements WARNING: To avoid electric shock, discharge the capacitor under test before measuring. 1. Set the function switch to the CAP position. 2.
Temperature Measurements (Models EX720 and EX730 only) 1. Set the function switch to the TEMP position. 2. Insert the Temperature Probe into the negative COM and the V·Ω·CAP·TEMP·Hz· positive jacks, observing polarity. 3. Touch the Temperature Probe head to the device under test. Continue to touch the part under test with the probe until the reading stabilizes. 4. Read the temperature on the display. The digital reading will indicate the proper decimal point and value. 5.
Data Hold To freeze the LCD reading, press the HOLD button. While data hold is active, the HOLD icon appears on the LCD. Press the HOLD button again to return to normal operation. DC ZERO (Relative) (EX730 only) The DC ZERO is a relative feature and can be used in any function. 1. Press the DC ZERO button to zero the display. “ZERO” will appear in the display. The displayed reading is now the actual value less the stored “zero” value. 2. Press the DC ZERO button to view the stored value.
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 with a damp cloth and mild detergent; do not use abrasives or solvents. If the meter is not to be used for 60 days or more, remove the battery and store it separately. Battery Replacement 1.
Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information.
