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Summary of Contents for Extech Instruments EX612
- Page 1 User's Guide 400Amp True RMS AC Clamp Meter Model EX612...
- Page 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 Non-Contact Voltage detector. The double molded case is designed for heavy duty use. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
- Page 3 See that the batteries are not short-circuited. Do not throw batteries into the fire. Function Maximum Input A AC, 400A DC/AC V DC, V AC 600V DC/AC Resistance, Capacitance, Frequency, Diode Test 250V DC/AC A 4000 A Type K Temperature 30V DC, 24V AC EX612-en-GB_v2.9 4/15...
- Page 4 Farad (Capacitance) Hertz (Frequency) Duty Ratio F and Fahrenheit and Celsius units (Temperature) Therocouple 1, Thermocouple 2, Thermocouple difference n, m, , M, k Unit of measure prefixes: nano, milli, micro, mega, and kilo Continuity test Diode test EX612-en-GB_v2.9 4/15...
- Page 5 NOTE: The detector is designed with high sensitivity. Static electricity or other sources of energy may randomly trip the sensor. This is normal operation. EX612-en-GB_v2.9 4/15...
- Page 6 Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit. Read the voltage value in the display. Frequency When ACA is selected, the measured frequency can be viewed in the lower display. EX612-en-GB_v2.9 4/15...
- Page 7 If one reading displays a value (typically 0.400V to 01.800V) and the other reading displays OL, the diode is good. If both readings display OL the device is open. If both readings are very small or ‘0’, the device is shorted. EX612-en-GB_v2.9 4/15...
- Page 8 Touch the red test probe tip to the other side of the device. Read the Frequency value on the upper large display. Read the Duty Ratio on the lower small display. Press the MODE button to display the Duty Ratio on the large display. EX612-en-GB_v2.9 4/15...
- Page 9 Read the temperature on the display. Press the T1-T2 button to step through the display combinations: Upper display Lower display T1-T2 T1- T2 Note: In case of an open input or a temperature overrange, the meter will display “- - - -” . EX612-en-GB_v2.9 4/15...
- Page 10 APO is now disabled (APO icon is off) and will be reset when the Function switch is returned to the OFF position. Low battery indication When the icon appears in the display, the battery should be replaced. Refer to the battery replacement procedure in the maintenance section. EX612-en-GB_v2.9 4/15...
- Page 11 Never mix battery types. Always install new batteries of the same type Fuse Replacement Remove the battery Remove the Phillips head screws (2) that secures the rear cover. Replace the fuse with one of equal rating. (200mA, 660V [SIBA 70-180-40]) Replace the rear cover and battery EX612-en-GB_v2.9 4/15...
- Page 12 Capacitance 400.00nF 0.01nF ±(5.0% + 40 digits) 4000.0nF 0.1nF ±(3.0% + 10 digits) 400.00µF 0.01µF ±(3.5% + 10 digits) 4000.0µF 0.1µF ±(5.0% + 10 digits) 40.000mF 0.001mF Frequency 400.00Hz 0.01Hz ±(1.0% + 3 digits) (clamp) Sensitivity: 5Arms minimum EX612-en-GB_v2.9 4/15...
- Page 13 0°C 0.1° <1000° 1° >1000° 33 to 211°F ±(1.0% + 1°C/2°F) 1 to 100°C 212 to 718°F ±(1.5% + 2°C/3°F) 101 to 399°C 719 to 1832°F ±(2.5% + 4°C/7°F) 400 to 1000°C Specification does not include probe accuracy EX612-en-GB_v2.9 4/15...
- Page 14 For indoor use and in accordance with the requirements for double insulation to IEC1010-1 (2001): EN61010-1 (2001) Overvoltage Category III 600V and Category II 1000V, Pollution Degree 2. Approvals Patent notice U.S. Patent 7163336 Copyright © 2013‐2015 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form ISO‐9001 Certified www.extech.com EX612-en-GB_v2.9 4/15...
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