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Summary of Contents for Extech Instruments EX320
- Page 1 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 320 MultiMeter. The EX320 offers AC/DC Voltage, AC/DC Current, Resistance, Diode, and Continuity testing plus a built-in non-contact Voltage Detector. Proper use and care of this meter will provide many years of reliable service. -
Page 3: Controls And Jacks
) (amps) milli (10 ) (volts, amps) kilo (10 ) (ohms) mega (10 ) (ohms) Volts Amps Ω Ohms Alternating current Direct current HOLD Display hold AUTO Autoranging Highest reading C, F Temperature units Model EX320 - Version 4.0 –05/2006... -
Page 4: 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 5: Ac Voltage Measurements
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. Model EX320 - Version 4.0 –05/2006... -
Page 6: 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. Model EX320 - Version 4.0 –05/2006... -
Page 7: Resistance Measurements
Touch the test probe tips to the circuit or wire under test. If the resistance is less than approximately 100Ω, the audible signal will sound. If the circuit is ‘open’ (bad), the display will indicate “OL”. Model EX320 - Version 4.0 –05/2006... -
Page 8: Diode Test
Press the MAX button (the MAX icon will appear on the LCD). The meter will now only display the highest reading during a test. Each time a higher reading is encountered, the display will update. Press the MAX button again to exit this mode. Model EX320 - Version 4.0 –05/2006... -
Page 9: Maintenance
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. Model EX320 - Version 4.0 –05/2006... -
Page 10: Low Battery Indication
µA ranges, 10A/250V fast blow for the A range). Secure the fuse/battery compartment cover. Place the protective rubber holster on the meter. WARNING: To avoid electric shock, do not operate your meter until the fuse cover is in place and fastened securely. Model EX320 - Version 4.0 –05/2006... -
Page 11: Range 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. Model EX320 - Version 4.0 –05/2006... -
Page 12: General Specifications
OVERVOLTAGE CATEGORY IV 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 Model EX320 - Version 4.0 –05/2006... -
Page 13: Warranty
Extech's total liability is limited to repair or replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.
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