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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.

300 SERIES

MULTIMETER

41822

Summary of Contents for 300 Series

Page 1: ...commend 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 i...

Page 2: ... THIS MANUALS SAFETY CONTENT WARNING Information that draws attention to the risk of injury or death CAUTION Information that draws attention to the risk of damage to the product or surroundings 1 4 COPYRIGHT NOTICE Copyright Draper Tools Limited Permission is granted to reproduce this publication for personal educational use only Commercial copying redistribution hiring or lending is prohibited N...

Page 3: ...E 15 8 2 MANUAL RANGING AND AUTORANGING 15 8 3 DATA HOLD MODE 15 8 4 TRIGGER SELECTION 15 8 5 MEASURING DC OR AC VOLTAGE 16 8 6 MEASURING DC OR AC CURRENT 16 8 7 MEASURING RESISTANCE Ω 17 8 8 CONTINUITY TEST 17 8 9 MEASURING FREQUENCY 17 8 10 MEASURING DUTY CYCLE 18 8 11 MEASURING CAPACITANCE 18 8 12 DIODE TEST 18 8 13 MEASURING TEMPERATURE 19 8 14 MEASURING RPM 19 8 15 MEASURING DWELL ANGLE 20 8 ...

Page 4: ...t where tools are hired out when the guarantee period is 90 days from the date of purchase This guarantee does not apply to normal wear and tear nor does it cover any damage caused by misuse careless or unsafe handling alterations accidents or repairs attempted or made by any personnel other than the authorised Draper warranty repair agent Note If the tool is found not to be within the terms of wa...

Page 5: ...splay 3 5 6 digit display with a max reading of 5999 Over range Indication OL shown on the screen Negative Polarity Indication Negative sign shown on the screen automatically Sampling Rate About 2 to 3 times sec Operating Temperature 0 C to 40 C 75 RH Temperature Coefficient 0 2 x specified accuracy C 18 C or 28 C Storage Temperature 10 C to 50 C 85 RH Operating Altitude 0 to 2000 meters Battery 9...

Page 6: ...o 400Hz Response Average calibrated in rms of sine wave Overload Protection Protection for VΩmAHz terminal inputs Fuse 600mA 600V Fast Protection for 10A terminal inputs Fuse 10A 600V Fast Max Input Current 10A For measurements 2A measurement duration 10 secs and interval 15 minutes Overload Protection Protection for VΩmAHz terminal inputs Fuse 600mA 600V Fast Protection for 10A terminal inputs Fu...

Page 7: ...gits 0 1nF 4μF 3 5 rdg 5 digits 0 00μF 40μF 4 0 rdg 5 digits 0 01μF 400μF 5 0 rdg 5 digits 0 1μF 4000μF not specified 1μF Continuity Test Range Function The built in buzzer will sound if the resistance is less than about 20Ω The buzzer may or may not sound if the resistance is between 20Ω and 150Ω The buzzer will not sound if the resistance is more than 150Ω Diode Range Resolution Function The app...

Page 8: ...Width Range Accuracy Resolution 0 5 20ms 2 0 rdg 3 digits 0 1ms Input Voltage 2Vp 50Vp 4 INTRODUCTION Note 1 Use K type thermocouple 2 Accuracy does not include error of the thermocouple probe 3 Accuracy specification assumes ambient temperature is stable to 1 For ambient temperature changes of 5 rated accuracy applies after 1 hour Temperature Range Accuracy Resolution 20 C 0 C 6 0 5 C 0 1 C C 0 C...

Page 9: ...ngine 10000RPM 0 1kRPM 120 20000RPM Input Voltage 2Vp 50Vp Max Allowable RPM of Engine 20000RPM Dwell Angle Number of Cylinders Range Resolution Accuracy 4 cylinders 0 90º 0 1º 2 5 rdg 2 digits 5 cylinders 0 72º 6 cylinders 0 60º 8 cylinders 0 45º 4 INTRODUCTION Overload Protection 250V DC or rms AC Engine Dwell Range Accuracy Resolution 4CYL 3º 0 1º 6CYL 3º 0 1º 8CYL 3º 0 1º ...

Page 10: ...g 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 If the machine is unprotected from dust and debris components will become clogged 4 INTRODUCTION ...

Page 11: ...ectrical specifications 3 Do not use an unapproved fuse to replace the fuse inside the meter Only replace with the same model or the same specifications of the fuse Before changing remove the test leads to ensure that there is no signal input 4 Do not use unapproved batteries to replace the battery inside the meter Replace only with the same model or the same electrical specifications of the batte...

Page 12: ...12 LCD display window Switch between functions Range switch button Measurement function range switch Probe sockets Relative mode Hold button 6 IDENTIFICATION ...

Page 13: ...cted Cylinder number display which shows the presently selected engine cylinder number The battery is low and must be replaced immediately Diode test is selected Continuity test is selected Relative mode is active Automatic power off feature is enabled Data Hold is enabled Dwell angle measurement is selected DC Negative sign AC Autorange mode is active ...

Page 14: ...ay 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 Retain the packaging material at least during the guarantee period in case the machine needs to be returned for repair Warning Some of the packaging materials used may be harmful to children keep them out of reach from children Di...

Page 15: ...erform a new measurement the screen will show the difference between the reference and the new measurement 3 Press the REL button again the meter will exit the Relative mode and the symbol will disappear Note 1 When in Relative mode the actual value of the object under test must not exceed the full scale reading of the selected range Use a higher range if necessary 2 Relative mode is available onl...

Page 16: ...VΩmAHz terminal If the current is between 600mA and 20A connect the red test lead to the 10A terminal instead 2 Set the measurement function range switch to or range position Note If the red test lead is connected to the VΩmAHz terminal the function switch must be set to the position If the red test lead is connected to the 10A terminal the function switch must be set to the position 3 Press the S...

Page 17: ...change is automatic and the measurement range is 0MHz 10MHz 2 The voltage of input signal should be between 1V rms and 20V rms The higher the frequency the higher the required input voltage 3 For measurements 10Hz the amplitude of input signal must be more than 2V rms 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 ...

Page 18: ...display 3 Connect the red test lead to the anode of the diode to be tested and the black test lead to the cathode of the diode 4 The screen shows the approximate forward voltage drop of the diode If the connection is reversed OL will be shown instead 8 11 MEASURING CAPACITANCE 1 Set the measurement function range switch to position Then press the SEL button until the screen shows unit of capacitan...

Page 19: ...tion 2 If the engine to be tested is a 2 stroke engine press the SEL button until the symbol appears on the upper area of the screen If the engine to be tested is a 4 stroke engine press the SEL button until the symbol appears on the upper area of the screen 3 Connect the negative black output plug of the inductive pick up to the COM terminal and the positive red output plug of the inductive pick ...

Page 20: ...oo low it will be impossible to make measurement 2 Reading s stability will decrease if the rotation speed of the engine is too low 3 The polarity of the input voltage must be correct otherwise it will be impossible to make measurement 8 16 MEASURING PULSE WIDTH 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 switc...

Page 21: ...21 9 1 BATTERY REPLACEMENT WARNING Before attempting to open the battery cover of the meter be sure that test leads have been disconnected 9 MAINTENANCE ...

Page 22: ...ly 7 2 stroke and 4 stroke engine measurements for RPM measurement function only 8 4 cylinder 5 cylinder 6 cylinder and 8 cylinder engine measurements for dwell angle measurement function only RANGE button Used to switch the meter between autorange mode and manual range mode as well as to select desired manual range REL button Used to enter or exit Relative mode HOLD button Press this HOLD button ...

Page 23: ...or use Do not expose to rain Resistance in Ohms Current DC Voltage AC Warning Read instruction manuals before operating and servicing this equipment Voltage DC Continuity test buzzer Auto power off Diode test Data hold Screen lock Low battery display Back light A Current AC Attention High voltage current Danger Temperature Fuse TACH Tachometer DWELL Dwell angle MAX Max reading hold 10 EXPLANATION ...

Page 24: ...ording to national regulations Contact your local authority for details of collection schemes in your area In all circumstances Do not dispose of power tools with domestic waste Do not incinerate Do not abandon in the environment Do not dispose of WEEE as unsorted municipal waste Waste Electrical Electronic Equipment 11 DISPOSAL ...

Page 25: ...25 NOTES ...

Page 26: ...26 NOTES ...

Page 27: ...27 NOTES ...

Page 28: ... Warranty Repair Agent For aftersales servicing or warranty repairs please contact the Draper Tools Helpline for details of an agent in your local area YOUR DRAPER STOCKIST 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 per...

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