Tenma 72-8150 Operating Manual
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Tenma 72-8150 Operating Manual

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Model 72-8150: OPERATING MANUAL

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Summary of Contents for Tenma 72-8150

  • Page 1: Table Of Contents

    Model 72-8150: OPERATING MANUAL Table of Contents Title Page Overview Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Functional Buttons Display Symbols Measurement Operation A. Measuring Resistance B. Capacitance Measurement C. Diode and Continuity Test D.
  • Page 2 Model 72-8150: OPERATING MANUAL...

  • Page 3: Overview

    To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safety Operation” carefully before using the Meter. Digital Capacitance Meter Model 72-8150 (hereafter referred to as “the Meter”) is a 3 1/2 digits with steady operations, fashionable design and highly reliable hand- held measuring instrument.

  • Page 4: Inspection

    Model 72-8150: OPERATING MANUAL Inspection Open the package case and take out the Meter. Check the following items carefully to see if any items are missing or damaged. Item Description English Operating Manual 1 piece Test Clip 1 pair 9V Battery (NEDA1604, 6F22 or 006P)

  • Page 5: Safety Information

    Model 72-8150: OPERATING MANUAL Safety Information This Meter complies with the standards EMC EN61326. Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired. In this manual, a Warning identifies conditions and actions that pose hazards to the user, and may damage the Meter or the equipment under test.

  • Page 6: Rules For Safe Operation

    Model 72-8150: OPERATING MANUAL Rules For Safe Operation Warning To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter or to the equipment under test, adhere to the following rules: Before using the Meter inspect the case. Do not use the Meter if it is damaged or the case (or part of the case) is removed.
  • Page 7 Model 72-8150: OPERATING MANUAL When servicing the Meter, use only the same model number or identical electrical specifications replacement parts. The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident.

  • Page 8: International Electrical Symbols

    Model 72-8150: OPERATING MANUAL International Electrical Symbols Ground Double Insulated Low Battery. Continuity Test. Diode. Capacitance Test Fuse. Warning. Refer to the Operating Manual. Conforms to Standards of European Union.

  • Page 9: The Meter Structure

    Model 72-8150: OPERATING MANUAL The Meter Structure (see figure 1) (figure 1) 1. LCD Display 2. Capacitance Zero Adjustment Switch 3. Transistor Jack 4. Resistance, Diode and Continuity Buzzer Input Terminal 5. Capacitance Input Terminal 6. Small Value Capacitance Jack 7.

  • Page 10: Display Symbols

    Model 72-8150: OPERATING MANUAL Display Symbols (see figure 2) µF ΩH kΩMΩ (figure 2) No. Symbol Meaning Data hold is active. The battery is low. Warning: To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears.

  • Page 11: Measurement Operation

    Model 72-8150: OPERATING MANUAL Measurement Operation Make sure the Low Battery Display is not on, otherwise false readings may be provided. Pay extra attention to the symbol, before carrying measurement, which is located besides the input terminals of the Meter.
  • Page 12 Model 72-8150: OPERATING MANUAL Note When measuring at 20Ω and 200Ω range, the test clips can add 0.1 to 0.3Ω error to resistance. To obtain precise readings in low-resistance measurements, short circuit the input terminals beforehand and record the reading obtained (called this reading as X).

  • Page 13: Capacitance Measurement

    Model 72-8150: OPERATING MANUAL B. Capacitance Measurement (see figure 4) (figure 4) Warning To avoid damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. The Meter’s capacitance ranges are:200pF, 2nF, 20nF, 200nF, 2µF, 20µF, 200µF, 2mF and 20mF.
  • Page 14 Model 72-8150: OPERATING MANUAL When measuring small value capacitor, that is 200pF, 2nF and 20nF, first open circuit the test clips or the Small Value Capacitance Jack, then turn the Capacitance Zero Adjustment Switch to adjust zero. The measured value shows on the display.

  • Page 15: Diode And Continuity Test

    Model 72-8150: OPERATING MANUAL C. Diode and Continuity Test (see figure 5) (figure 5) Warning To avoid damage to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring diodes and continuity.
  • Page 16 Model 72-8150: OPERATING MANUAL Note In a circuit, a good diode should still produce a forward voltage drop reading of 0.5V to 0.8V; however, the reverse voltage drop reading can vary depending on the resistance of other pathways between the probe tips.

  • Page 17: Transistor Hfe Measurement

    Model 72-8150: OPERATING MANUAL D. Transistor hFE Measurement (see figure 6) (figure 6) To measure transistor, set up the Meter as follows: Check that the transistor is PNP or NPN type. Insert the transistor to be measured to the corresponding Transistor Jack.

  • Page 18: General Specifications

    Model 72-8150: OPERATING MANUAL General Specifications Fused Protection for capacitance Input Terminal: 0.315A, 250V, fast type fuse, 5x20 mm. Maximum Display: Display: 1999. Measurement Speed: Updates 2-3 times /second. Polarity: Auto. (Display “-“ when negative) Overload: Display “1” Range: Manual Ranging...

  • Page 19: Accuracy Specifications

    Model 72-8150: OPERATING MANUAL Accuracy Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23 Relative humidity: <75%. Temperature coefficient: 0.1 x (specified accuracy) / 1 A. Resistance Test Overload Range Resolution Accuracy Protection 20Ω 0.01Ω...

  • Page 20: Capacitance Test

    Model 72-8150: OPERATING MANUAL B. Capacitance Test Testing Range Resolution Accuracy Frequency 200.0pF 0.1pF 2.000nF 0.001nF 800Hz 20.00nF 0.01nF 200.0nF 0.1nF (0.5%+10) 2.000µF 0.001µF 80Hz 20.00µF 0.01µF 200.0µF 0.1µF 2.000mF 0.001mF (2%+2) 20.00mF 0.01mF Remarks: Overload Protection 0.315A, 250V, fast type fuse, 5x20 mm...

  • Page 21: Transistor

    Model 72-8150: OPERATING MANUAL D. Transistor Testing Overload Range Resolution Condition Protection 2.8V 1β 250V rms I bo 10µA Remarks: The display value is the tested transistor’s nearest value (0~1000β).

  • Page 22: Maintenance

    Model 72-8150: OPERATING MANUAL Maintenance This section provides basic maintenance information including battery and fuse replacement instruction. Warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information.

  • Page 23: Replacing The Battery

    Model 72-8150: OPERATING MANUAL B. Replacing the Battery (see figure 7) (figure 7) Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator “ ” appears.

  • Page 24: Replacing The Fuse

    Model 72-8150: OPERATING MANUAL C. Replacing the Fuse (see figure 8) (figure 8) Warning To avoid injury due to electrical shock or arc blast, and to avoid damage to the Meter, use specified fuses ONLY in accordance with the following procedure.
  • Page 25 Model 72-8150: OPERATING MANUAL Fuse replacement is seldom required. Blown fuses are typically a result of improper use. ** END ** This operating manual is subject to change without notice.
  • Page 26 Model 72-8150: OPERATING MANUAL Copyright 2006 Tenma Test Equipment. All rights reserved. Tenma Test Equipment 405 S. Pioneer Blvd. Springboro,Ohio 45066 www.tenma.com...

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