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Summary of Contents for Extech Instruments EX320
- Page 1 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com User's Guide Mini Multimeter with Non-Contact Voltage Detector (NCV) Model EX320...
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Page 2: Safety Instructions
Introduction Congratulations on your purchase of the Extech EX320 Meter. The EX320 offers AC/DC Voltage, AC/DC Current, Resistance, Diode, Continuity, non-contact Voltage Detection. Proper use and care of this meter will provide many years of reliable service. Safety This symbol adjacent to another symbol, terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter. - Page 3 Expired or damaged batteries can cause cauterization on contact with the skin. Always, therefore, use suitable hand gloves in such cases See that the batteries are not short-circuited. Do not throw batteries into the fire. EX320-EU-ENG V5.1 6/09...
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Page 4: Controls And Jacks
(10 ) (amps) milli (10 ) (volts, amps) kilo (10 ) (ohms) mega (10 ) (ohms) Highest reading Alternating current Direct current •))) Continuity Diode test Battery status Amps Ohms Volts AUTO Autoranging HOLD Display hold EX320-EU-ENG V5.1 6/09... -
Page 5: Non-Contact Ac Voltage Detector
NON-CONTACT AC VOLTAGE DETECTOR The EX320 can detect the presence of AC voltage (from 100 to 600VAC) simply by being held very near to a voltage source. WARNING: Test the AC voltage detector on a known live circuit before each use. -
Page 6: Ac Voltage Measurements
Insert the red test lead banana plug into the positive V jack. 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 in the display. EX320-EU-ENG V5.1 6/09... -
Page 7: Ac / Dc Current Measurements
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. Apply power to the circuit. Read the current in the display. EX320-EU-ENG V5.1 6/09... -
Page 8: Resistance Measurements
Touch the test probe tips to the circuit or wire you wish to check. If the resistance is less than approximately 100, the audible signal will sound. If the circuit is ‘open’ (bad), the display will indicate “OL”. EX320-EU-ENG V5.1 6/09... -
Page 9: Diode Test
The meter will automatically turn off after 15 minutes of inactivity. This will conserve battery energy. To turn the meter on after an Auto Power OFF, simply turn the rotary switch to OFF and then back to the desired setting. EX320-EU-ENG V5.1 6/09... -
Page 10: Maintenance
Remove old or weak batteries so they do not leak and damage the unit. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME, the batteries should be removed to prevent damage to the unit. EX320-EU-ENG V5.1 6/09... -
Page 11: Low Battery Indication
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle WARNING: To avoid electric shock, do not operate the meter until the batteries and the fuses are in place and fastened securely. EX320-EU-ENG V5.1 6/09... -
Page 12: Replacing The Fuses
Always use fuses of the proper size and value (500mA/250V fast blow for the mA / µA ranges, 10A/250V fast blow for the A range). Secure the fuse/battery compartment cover. Place the protective rubber holster on the meter. EX320-EU-ENG V5.1 6/09... -
Page 13: Specifications
(% reading) – This is the accuracy of the measurement circuit. (+ digits) – This is the accuracy of the analog to digital converter. Accuracy is stated at 65 F to 83 F (18 C to 28 C) and less than 75% RH. EX320-EU-ENG V5.1 6/09... -
Page 14: General Specifications
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation. Note – Examples include electricity meters and primary over-current protection equipment Copyright © 2007 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
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