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Extech Instruments 380950 User Manual

Extech Instruments 380950
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User's Guide
Model 380950
80A Mini AC/DC Clamp Meter
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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Extech Instruments 380950 Specifications

General IconGeneral
Model380950
Frequency Response (Sound Level)31.5Hz to 8kHz
Battery9V
DisplayLCD
Max Voltage600V
Max Current400A
Weighting NetworksA & C
Time WeightingFast/Slow

Summary

Safety

International Safety Symbols

Indicates user must refer to manual for further information or hazardous voltages may be present.

Safety Notes

Important precautions such as not exceeding input ranges or switching off the meter when not in use.

Warnings

Crucial warnings regarding function switch use, voltage limits, and test lead disconnection.

Cautions

Precautions for preventing damage, shock, injury, or death, including care with high voltages.

Operation

DC/AC Current Measurements

Instructions for measuring AC/DC current using the clamp meter, including zeroing the display.

DC/AC Voltage Measurements

Steps for measuring AC/DC voltage, including connecting test leads and selecting AC/DC mode.

Resistance Measurements

Procedure for measuring resistance, involving test probes and circuit disconnection for accuracy.

Continuity Check

How to perform a continuity check using the meter, noting the audible signal for low resistance.

Diode Test

Procedure for testing diodes, including forward and reverse voltage readings.

Capacitance Measurements

Steps for measuring capacitance, emphasizing safety by discharging capacitors first.

Frequency or % Duty Cycle Measurements

How to measure frequency and duty cycle using the Hz/% function.

Analog Signal Output

Details on using the analog signal output for DCA and ACA ranges with external devices.

Auto/Manual Ranging

Explanation of how to switch between autoranging and manual ranging modes.

Data Hold

Instructions on how to freeze the displayed reading using the HOLD button.

Backlight

How to turn the LCD backlight on and off using the HOLD button.

Zero Button

Information on using the ZERO button for Capacitance and DC Current measurements.

Specifications

PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORIES

OVERVOLTAGE CATEGORY I

Equipment connected to circuits with transient overvoltages limited to low levels.

OVERVOLTAGE CATEGORY II

Energy-consuming equipment supplied from fixed installations.

OVERVOLTAGE CATEGORY III

Equipment in fixed installations, like switches and industrial devices.

OVERVOLTAGE CATEGORY IV

Equipment used at the origin of an installation, like electricity meters.

Maintenance

Cleaning and Storage

Guidelines for cleaning the meter with mild detergent and storing it properly.

Battery Replacement

Step-by-step instructions for replacing the meter's batteries.

Warranty

Calibration and Repair Services

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