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Summary of Contents for Extech Instruments TK505
- Page 1 User's Guide Autoranging True RMS Multimeter Extech EX505...
- Page 2 Introduction Congratulations on your purchase of the Extech EX505 True RMS Autoranging Multimeter. This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Diode Test, and Continuity plus Thermocouple Temperature. It features a waterproof, rugged design for heavy duty use This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
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Page 3: Safety Instructions
SAFETY INSTRUCTIONS This meter has been designed for safe use, but must be operated with caution. The rules listed below must be carefully followed for safe operation. NEVER apply voltage or current to the meter that exceeds the specified maximum: Input Protection Limits Function Maximum Input... -
Page 4: Controls And Jacks
Controls and Jacks 1. 4,000 count LCD display 2. RANGE button 3. Hz and % button 4. Mode button 5. Function switch 6. mA, µA and 10A input jacks 7. COM input jack 8. Positive input jack 9. Backlight button button HOLD button... -
Page 5: Dc Voltage Measurements
Operating Instructions WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be measured with great care. 1. ALWAYS turn the function switch to the OFF position when the meter is not in use. 2. If “OL” appears in the display during a measurement, the value exceeds the range you have selected. -
Page 6: Dc Current Measurements
DC CURRENT MEASUREMENTS CAUTION: Do not make 20A current measurements for longer than 30 seconds. Exceeding 30 seconds may cause damage to the meter and/or the test leads. 1. Insert the black test lead banana plug into the negative COM jack. 2. -
Page 7: Resistance Measurements
RESISTANCE MEASUREMENTS WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords. 1. Set the function switch to the Ω CAP position. -
Page 8: Temperature Measurements
TEMPERATURE MEASUREMENTS 1. Set the function switch to the ºF or ºC position. 2. Insert the Temperature Probe into the input jacks, making sure to observe the correct polarity. 3. Touch the Temperature Probe head to the part whose temperature you wish to measure. Keep the probe touching the part under test until the reading stabilizes (about 30 seconds). -
Page 9: Autoranging/Manual Range Selection
FREQUENCY SENSITIVITY (ELECTRICAL) The frequency sensitivity is range dependent when the function is selected from while in the voltage or current measuring function. Below are typical sensitivities for the “electrical” measurement modes. Range Sensitivity Frequency width ( DC/AC ) 5Hz~10kHz ≥... -
Page 10: Maintenance
Maintenance WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the back cover or the battery or fuse covers. WARNING: To avoid electric shock, do not operate your meter until the battery and fuse covers are in place and fastened securely. -
Page 11: Replacing The Fuses
Warranty EXTECH INSTRUMENTS CORPORATION warrants the basic instrument to be free of defects in parts and workmanship for three years from date of shipment (a six month limited warranty applies on sensors and cables). If it should become necessary to return the... -
Page 12: Specifications
Specifications Function Range Resolution Accuracy ±(0.5% reading + 2 digits) DC Voltage 400mV 0.1mV 0.001V ±(1.2% reading + 2 digits) 0.01V 400V 0.1V ±(1.5% reading + 2 digits) 1000V ±(2.0% reading + 10 digits) AC Voltage 400mV 0.1mV 0.001V ±(2.0% reading + 5 digits) 0.01V 400V 0.1V... - Page 13 Function Range Resolution Accuracy ±(1.2% reading + 4 digits) Resistance 400Ω 0.1Ω ±(1.0% reading + 2 digits) 4kΩ 0.001kΩ 40kΩ 0.01kΩ ±(1.2% reading + 2 digits) 400kΩ 0.1kΩ 4MΩ 0.001MΩ ±(2.0% reading + 3 digits) 40MΩ 0.01MΩ Capacitance 40nF 0.01nF ±(5.0% reading + 7 digits) 400nF 0.1nF...
- Page 14 The UL mark does not indicate that this product has been evaluated for the accuracy of its readings. 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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