User's Manual 2000A Auto Ranging True RMS Clamp + DMM MODEL 380926
INTRODUCTION Congratulations on your purchase of Extech’s 380926 Clamp meter + Digital MultiMeter. This meter can measure to 2000A through the clamp and also measure to 400mA through the test leads. With Capacitance, Diode and Duty Cycle measurements, this meter provides the user with a full featured multimeter combined with the high amperage current clamp. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
METER DESCRIPTION Front panel 1. Current Sense Jaws 2. Function switch 3. Keypad 4. LCD display 5. Input jacks Note: The tilt stand and battery compartment door are located on the rear of the meter.
OPERATING INSTRUCTIONS Current Measurements using the Clamp, DC/AC WARNING: Make sure that the test leads are disconnected from the meter’s terminals before making current measurements with the clamp jaw. WARNING: For safety, use the rubber input terminal cover when measuring current using the Clamp. 1. 2. 3. 4. 5. 6. Set the Function switch to 2000A position. Press the FUNC key to select AC or DC current For DC current measurements, push & hold the DCA ZERO button until the reading indicates zero.
Voltage Measurements, DC/AC 1. 2. 3. 4. 5. Set the Function Switch to the V position. Press the FUNC key to select AC or DC. Insert the black test lead to the COM input jack and the red test lead into the V input jack. Connect the test leads in PARALLEL with the circuit to be measured (see diagrams). Read the measured value from the LCD display. Resistance Measurements CAUTION: Before taking any in-circuit resistance measurements remove power from the circuit under test and discharge all capacitors. 1.
Diode Test 1. 2. 3. 4. Set the Function switch to the diode position. Press the FUNC key until the symbol appears on the LCD. Insert the black test lead to the COM input jack and the red test lead to the input jack. Connect the test lead tips to the diode. A typical diode forward voltage drop will indicate 0.3 to 0.7V. The reverse drop will indicate "OL", indicating high impedance. Proper diode check should include both forward and reverse tests.
Automatic / Manual Range Selections The meter defaults to the autoranging mode when turned on. "AUTO" will appear in the display. To select manual ranging, press the RANGE key. Momentary presses of the RANGE key will step through the ranges. To return to the Auto Range mode, press and hold the RANGE key for 2 seconds. Relative Reading Measurements Press the REL key to enter the relative mode. "REL" will appear in the display.
SPECIFICATIONS Function AC/DC Current (Clamp on) AC Voltage True RMS DC Voltage Resistance AC/DC Current (Direct Input) Frequency Capacitance Duty Cycle Continuity Range Resolution Accuracy 400.0A 0.1A ±(2.0% + 5d) 2000A 1A ±(2.0% + 8d) 4.000V 1mV ±(1.2% + 5d) 40.00V 10mV 400.0V 0.1V 1000V 1V 400.0mV 0.1mV ±(0.5% + 2d) 4.000V 1mV ±(1.0% + 2d) 40.00V 10mV 400.0V 0.1V 1000V 1V ±(1.0% + 5d) 400.0 Ω 0.1Ω 4.000 kΩ 1Ω 40.00 kΩ 10Ω 400.0 kΩ 100Ω ±(2.0% + 2d) 4.000 MΩ 1kΩ ±(3.5% + 5d) 40.00 MΩ 10kΩ 400.
Conductor Size Measurement parameters Current Sensor Zero adjust Diode Test Battery type Range Selection Display Overload Indication Power Consumption Low Battery Indication Sampling rate Standards Operating Temperature/Humidity Dimensions Weight 2.0”(50mm) maximum ACA, DCA, ACV, DCV, Resistance, Diode, Frequency, Capacitance, Duty Cycle, Continuity Hall Effect Automatic except for DCA (Push-button) Test current of 0.6mA typical; Open circuit voltage <1.6V DC typical. 9V NEDA 1604 Auto or manual 0.
Warranty EXTECH INSTRUMENTS CORPORATION (a FLIR company) 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 for authorization. Visit our website www.extech.com for contact information.
