CEN-TECH 37772 Owner's Manual And Safety Instructions
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CEN-TECH 37772 Owner's Manual And Safety Instructions

11 function digital multimeter
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Owner's Manual & Safety Instructions
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operating, inspection, maintenance and cleaning procedures. Write the product's serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
Email our technical support at: productsupport@harborfreight.com
REV 14f
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
©
Copyright
2004 by Harbor Freight Tools
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Keep this manual for the safety warnings and precautions, assembly,
Visit our website at: http://www.harborfreight.com
®
. All rights reserved.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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Summary of Contents for CEN-TECH 37772

  • Page 1 Owner’s Manual & Safety Instructions Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
  • Page 2 The battery is low. a. Pay special attention to the c. Near any explosive insulation protecting the connectors. gasses or fumes. b. Check the leads for exposed metal, damaged insulation, and continuity. Page 2 For technical questions, please call 1-888-866-5797. Item 37772 61593...
  • Page 3 If there is any doubt, do not operate the meter. Item 37772 61593 For technical questions, please call 1-888-866-5797. Page 3...
  • Page 4 27. Use the proper settings, terminals, techniques, and range for the tests performed. Start with the range stated in the instructions. SAVE THESE INSTRUcTIONS. Page 4 For technical questions, please call 1-888-866-5797. Item 37772 61593...

  • Page 5: Setup

    Section capacitance Section Temperature Section Temperature Dc current Measuring Section Socket capacitance Transistor Testing (hFE) Section Socket (cx) Transistor Testing Socket V/Ω/Hz Jack Jack Jack Jack Ac current Section Item 37772 61593 For technical questions, please call 1-888-866-5797. Page 5...

  • Page 6: Specifications

    (@ 400° to 1000°C) 2.0% of rdg Sampling Rate 2-3 times/second Overload Protection Fast-Acting 200mA/250V Fuse Operating Temperature Range: 32° - 104° F Display Battery One 9 V (included) Page 6 For technical questions, please call 1-888-866-5797. Item 37772 61593...
  • Page 7 Do not test current on circuits multimeter and the fuse may blow. higher than 20 amps. Do not switch between testing modes with the multimeter connected to a circuit. Item 37772 61593 For technical questions, please call 1-888-866-5797. Page 7...

  • Page 8: General Operating Instructions

    20 amperes. “AC Current Measurements”, only use the DC settings instead. Turn the Range Selector Switch to the position. Start with the highest range if the amperage is unknown. Page 8 For technical questions, please call 1-888-866-5797. Item 37772 61593...

  • Page 9: Resistance Measurements

    Plug the red Test Lead into the V/Ω/Hz cable to measure smaller signals. Jack. Plug the black Test Lead into the COM Jack. Switch the Multimeter ON. Remove and store Test Leads. Item 37772 61593 For technical questions, please call 1-888-866-5797. Page 9...

  • Page 10: Diode Measurement

    Multimeter ON. Display will show Read measurement. the current ambient temperature. WARNING! Avoid electric shock. Plug a “K”-type thermocouple into Remove thermocouple before the temperature measuring socket. switching between testing modes. Page 10 For technical questions, please call 1-888-866-5797. Item 37772 61593...

  • Page 11: Maintenance

    Turn the unit over. Replace cover and retighten screws. Remove screws. Record Serial Number Here: Note: If product has no serial number, record month and year of purchase instead. Item 37772 61593 For technical questions, please call 1-888-866-5797. Page 11...

  • Page 12: Warranty

    Limited 90 Day Warranty Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance.

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