Draper 300 Series User Manual
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Draper 300 Series User Manual

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300 SERIES
MULTIMETER
41822
IMPORTANT: Please read these instructions carefully to ensure the safe and effective use of this product and save
these instructions for future reference. This manual has been compiled by Draper Tools and is an integrated part of the
product with which it is enclosed and should be kept with it for future references.
This manual describes the purpose for which the product has been designed and contains all the necessary information
to ensure its correct and safe use. We recommend that this manual is read before any operation or, before performing
any kind of adjustment to the product and prior to any maintenance tasks. By following all the general safety
instructions contained in this manual, it will ensure both product and operator safety, together with longer life of the
product itself.
AlI photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the product.
Whilst every effort has been made to ensure accuracy of information contained in this manual, the Draper Tools policy
of continuous improvement determines the right to make modifications without prior warning.

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  • Page 1 IMPORTANT: Please read these instructions carefully to ensure the safe and effective use of this product and save these instructions for future reference. This manual has been compiled by Draper Tools and is an integrated part of the product with which it is enclosed and should be kept with it for future references.

  • Page 2: Title Page

    Commercial copying, redistribution, hiring or lending is prohibited. No part of this publication may be stored in a retrieval system or transmitted in any other form or means without written permission from Draper Tools Limited. In all cases this copyright notice must remain intact.

  • Page 3: Table Of Contents

    2. CONTENTS 2.1 CONTENTS ................Page content Page TITLE PAGE INTRODUCTION ....................2 REVISION HISTORY ..................2 UNDERSTANDING THIS MANUAL ..............2 COPYRIGHT NOTICE ..................2 CONTENTS CONTENTS ......................3 GUARANTEE GUARANTEE...................... 4 INTRODUCTION GENERAL SPECIFICATIONS .................5-9 HANDLING & STORAGE.................. 10 HEALTH &...

  • Page 4: Guarantee

    3. GUARANTEE 3.1 GUARANTEE Draper tools have been carefully tested and inspected before shipment and are guaranteed to be free from defective materials and workmanship. Should the tool develop a fault, please return the complete tool to your nearest distributor or contact Draper Tools Limited, Chandler's Ford, Eastleigh, Hampshire, SO53 1YF.

  • Page 5: Introduction

    4. INTRODUCTION 4.1 GENERAL SPECIFICATIONS Fuse Protection for " VΩmAHz " Terminal Inputs: 600mA, 600V, FAST, Min. Interrupt Rating 10000A. Fuse Protection for " 10A " Terminal Inputs: 10A, 600V, FAST, Min. Interrupt Rating 10000A. Display: 3 5/6-digit display, with a max. reading of 5999. Over range Indication: "...
  • Page 6 4. INTRODUCTION AC Voltage Range Accuracy Resolution ± （ 1.0% rdg + 5 digits） 0.001V 0.01V 600V ± （ 1.2% rdg + 5 digits） 0.1V - Input Impedance: About 10MΩ - Overload Protection: 600V DC/AC rms. - Frequency Range: 40 to 400Hz - Response: Average, calibrated in rms of sine wave DC Current Range...
  • Page 7 4. INTRODUCTION Resistance Range Accuracy Resolution 600Ω ± （ 1.0% rdg + 5 digits） 0.1Ω 6kΩ 0.001kΩ 60kΩ 0.01kΩ 600kΩ 0.1kΩ 6MΩ ± （ 1.5% rdg + 5 digits） 0.001MΩ 60MΩ ± （ 3.0% rdg + 10 digits） 0.01MΩ - Open Circuit Voltage: <0.7V Diode Range Resolution...

  • Page 8: Duty Cycle

    4. INTRODUCTION Frequency Range Accuracy Resolution 9.999Hz 0.001Hz 99.99Hz 0.01Hz 999.9Hz ± （ 1.0% rdg + 5 digits） 0.1Hz 9.999kHz 99.99kHz 10Hz 999.9kHz 100Hz 9.999MHz not specified 1kHz - Input voltage: 1V rms ~ 20V rms. Temperature Range Accuracy Resolution -20°C ~ 0°C ±...
  • Page 9 4. INTRODUCTION Engine Dwell Range Accuracy Resolution 4CYL ± （ 3º ) 0.1º 6CYL ± （ 3º ) 0.1º 8CYL ± （ 3º ) 0.1º - Overload Protection: 250V DC or rms AC Dwell Angle Number of Cylinders Range Resolution Accuracy 4 cylinders 0 ~ 90º...

  • Page 10: Handling & Storage

    4. INTRODUCTION 4.3 HANDLING & STORAGE Care must still be taken when handling, dropping this machine will have an effect on the accuracy. The environment will have a negative result on its operation if you are not careful. If the air is damp, components will rust.

  • Page 11: Health & Safety Information

    5. HEALTH & SAFETY INFORMATION 5.1 SAFETY PRECAUTIONS This instrument complies with IEC1010 (International Electrotechnical Commission promulgated safety standards). Design and production using the pollution level 2 safety requirements. Warning To avoid electrical shock or personal injury. Please read the safety information and “warnings and precautions” before use. Warning: When measuring voltage above 30V, current above 10ma, AC power with an inductive load.

  • Page 12: Identification

    6. IDENTIFICATION LCD display window. Probe sockets. Switch between functions. Relative mode. Range switch button. Hold button. Measurement function range switch.
  • Page 13 6. IDENTIFICATION 4-stroke engine measurement is selected. Negative sign 2-stroke engine measurement is selected. Positive (+) trigger is selected. Negative (-) trigger is selected. Cylinder number display which shows the presently selected engine cylinder number. The battery is low and must be replaced immediately.

  • Page 14: Unpacking & Checking

    Carefully remove the product from the packaging and examine it for any sign of damage caused during shipping. Lay the contents out and check them. If any part is damaged or missing, do not attempt to use the tool and contact the Draper Helpline immediately (see back page for details).

  • Page 15: Operating Instructions

    8. OPERATING INSTRUCTIONS 8.1 USING RELATIVE MODE Selecting Relative mode causes the meter to store the present reading on the screen as a reference for subsequent measurements. 1. Press the " REL " button. The meter enters the Relative mode and stores the present reading on the screen as a reference for subsequent measurements, and "...

  • Page 16: Measuring Dc Or Ac Voltage

    8. OPERATING INSTRUCTIONS 8.5 MEASURING DC OR AC VOLTAGE 1. Connect the black test lead to the " COM " terminal and the red test lead to the " VΩmAHz " terminal. 2. Set the measurement function range switch to the position.

  • Page 17: Measuring Resistance (Ω)

    8. OPERATING INSTRUCTIONS 8.7 MEASURING RESISTANCE (Ω) 1. Connect the black test lead to the " COM " terminal and the red test lead to the VΩmAHz " " terminal. 2. Set the measurement function range switch to position. Then press the " SEL " button to select resistance function ( the symbols "...

  • Page 18: Measuring Duty Cycle

    8. OPERATING INSTRUCTIONS 8.10 MEASURING DUTY CYCLE 1. Connect the black test lead to the " COM " terminal and the red test lead to the " VΩmAHz " terminal. 2. Set the measurement function range switch to Hz % position. Then press the " SEL " button until "...

  • Page 19: Measuring Temperature

    8. OPERATING INSTRUCTIONS 8.13 MEASURING TEMPERATURE 1. Set the measurement function range switch to °C °F position. Then press the " SEL " button to select between °C and °F. 2. Connect the negative " – " plug of the K type thermocouple to the " COM " terminal and the positive "...

  • Page 20: Measuring Dwell Angle

    8. OPERATING INSTRUCTIONS 8.15 MEASURING DWELL ANGLE 1. Connect the black test lead to the " COM " terminal and the red test lead to the " VΩmAHz " terminal. 2. Set the measurement function range switch to position. Then press the " SEL " button until the displayed number ( 4, 5, 6 or 8 ) of cylinders matches the engine under test.

  • Page 21: Maintenance

    9. MAINTENANCE 9.1 BATTERY REPLACEMENT WARNING Before attempting to open the battery cover of the meter, be sure that test leads have been disconnected.

  • Page 22: Explanation Of Symbols 10.1 Function Keys Explained

    10. EXPLANATION OF SYMBOLS 10.1 KEYS EXPLANATIONS • "SEL" button: Used to switch the meter between ( or among ): 1. AC and DC current measurements. 2. AC and DC voltage measurements. 3. Resistance, continuity, diode and capacitance test functions. 4.

  • Page 23: Explanation Of Symbols

    10. EXPLANATION OF SYMBOLS 10.2 EXPLANATION OF SYMBOLS Attention. WEEE Do not dispose of Waste Electrical & Electronic Equipment in with High voltage / current! domestic rubbish Danger. For indoor use. ° Do not expose to rain. Temperature. ° Class II construction (Double insulated) Voltage AC Conforms to all relevant...

  • Page 24: Disposal

    11. DISPOSAL 11.1 DISPOSAL - At the end of the machine’s working life, or when it can no longer be repaired, ensure that it is disposed of according to national regulations. - Contact your local authority for details of collection schemes in your area. In all circumstances: •...
  • Page 25 NOTES...
  • Page 26 NOTES...
  • Page 27 NOTES...
  • Page 28 ©Published by Draper Tools Limited. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical photocopying, recording or otherwise without prior permission in writing from Draper Tools Ltd. DBMC0217...

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