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Low Amp Probe

EETA308D

Reference Manual

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Summary of Contents for EETA308D

Page 1: ...Low Amp Probe EETA308D Reference Manual ...

Page 2: ......

Page 3: ...e instrument is suspected WARNING Risk of electrical shock This product is intended for Measurement Category I for example automotive 12V systems Do not use it for Measurement Categories II III and IV Measurement Category I is for measurements performed on circuits not directly connected to MAINS or MAINS circuits an example of MAINS circuit is 120VAC or 240VAC household or industrial circuits Do ...

Page 4: ...Y Safety Standards BSEN61010 1 2001 BSEN61010 2 032 2002 BSEN61010 031 2002 150 VRMS Category I Rated Transient Overvoltage 800V Pollution Degree 2 EMC Standards BSEN 61326 2 2 2006 1998 FCC Part 15 Class B ...

Page 5: ...nd Electronic Equipment according to the EU directive 2002 96 EC WARNING Read instruction manual and safety messages before using product Double Reinforced Insulation To avoid electric shock use caution during installation and use of this product High voltages and currents may be present in circuit under test Read all instructions completely before using this product ...

Page 6: ...Low Amp Probe EETA308D Reference Manual March 2011 ...

Page 7: ...ssistance in all other markets contact your selling agent The information specifications and illustrations in this manual are based on the latest information available at the time of publication The manufacturer reserves the right to make equipment changes at any time without notice 2011 Snap on Incorporated ...

Page 8: ...nstructions 4 3 1 Connecting the Probe 4 3 2 Switch on 4 3 3 Low Amp Current Probe Zero Adjustment 4 3 4 Error Factor 4 3 5 Reading the mV Scale 5 3 6 Current Measurement Applications 5 4 0 Current Probe Characteristics 10 5 0 Battery Replacement 11 6 0 Cleaning 12 7 0 Warranty 13 8 0 Declaration of Conformity 14 ...

Page 9: ...tic draw The jaws of the probe are designed with a built in hook feature to help isolate wires refer to Figure 1 Using advanced Hall Effect technology the Snap on Low Amp Probe accurately measures currents from 10 mA to 60 Amps with a resolution of 1mA over the frequency range of DC to 50 kHz The probe has two scales 0 to 20 Amps and 0 to 60 Amps The Snap on Low Amp Current Probe outputs an analog...

Page 10: ...ng Frequency range DC to 50kHz 3dB Temperature coefficient 0 1 of reading C Power supply 9V Alkaline PP3 MN1604 50 Hours low battery indicator Working voltage see Safety Standards section 150V AC RMS or DC 2 2 General Data Maximum conductor size 12mm diameter Output connection 4mm safety plugs Output zero Auto zero via push button Cable length 1 5 meters Operating temperature range 0 to 50 C 32 to...

Page 11: ...l conditions To adjust the output voltage to zero 1 Ensure that the probe is away from the current carrying conductor 2 Connect the Low Amp Current Probe to your instrument and select the voltage scale to view the reading 3 Turn the Low Amp Current Probe on by using the On Off and Range Selector switch to select the 20A or 60A scale Press the Zero button 3 4 Error Factor Current probes work by rea...

Page 12: ...ctor switch to select the 20A setting 2 Perform the Low Amp Current Probe Zero Adjustment procedure refer to section 3 3 Test To measure parasitic draw 1 Clamp the Low Amp Current Probe jaws around the B supply wire to the power distribution box or to the positive or negative battery cable The parasitic draw readings display 2 If a negative reading displays open the probe jaws and clamp the probe ...

Page 13: ...ach pump independently To measure fuel pump current 1 Clamp the Low Amp Current Probe jaws around the fuel pump voltage supply circuit near the fuel tank or at the fuel pump relay 2 Verify that the probe jaws are fully closed The fuel pump current readings display 3 If a negative waveform displays open the probe jaws and clamp the probe in the opposite direction Humps in the waveform represent the...

Page 14: ...say if in our example that the time measurement of the 8 humps is 12 ms we would divide 60 000 by 12 to get 5000 RPM To measure amperage measure the average voltage of the waveform and use 100 mV 1A for calculation 3 6 3 Ignition Coil Current Measurement Recommended Probe Setting 20A Note Before taking measurements or clamping the probe jaws around any wire complete the Setup steps below Setup 1 U...

Page 15: ...heck the ignition coil current at the fuse box if applicable To check the ignition coil current at the fuse box 1 Locate fuse box and remove the ignition or DIS fuse s 2 Install an inline fuse harness in place of the fuse 3 Clamp the Low Amp Current Probe around the inline fuse harness 3 6 4 Injector Current Measurement Recommended Probe Setting 20A Note Before taking measurements or clamping the ...

Page 16: ...e 3 Clamp the Low Amp Current Probe around the inline fuse harness On sequential fuel injected vehicles each waveform represents current flow through one injector On bank fired injectors each waveform represents current flow through the injector bank The injector waveform should have a gradual rise or ramp as the current begins to flow through the injector or the injector bank Current flow through...

Page 17: ... 00 0 01 0 1 1 10 100 Frequency kHz Attenuation dB Typical Linearity in 20A Range 2000 1500 1000 500 0 500 1000 1500 2000 20 15 10 5 0 5 10 15 20 Input Current A Output Voltage mV Typical Linearity in 60A Range 600 400 200 0 200 400 600 60 40 20 0 20 40 60 Input Current A Output Votage mV ...

Page 18: ...urrent Probe will invalidate your warranty To replace the battery 1 Unclamp the probe from the conductor 2 Using the On Off and Range Selector switch turn the Low Amp probe off 3 Disconnect the output leads from external equipment 4 Loosen the captive screw that secures the battery cover 5 Lift the cover through 30 and pull it clear of the probe body as shown in Figure 9 The battery is then access...

Page 19: ...12 6 0 CLEANING Clean the case periodically by wiping it with a damp cloth and detergent Do not use abrasive cleaners or solvents Do not immerse the probe in liquids ...

Page 20: ...d service or use after the tool is significantly worn Consumable products are not covered by any warranty Consumable products are goods reasonably expected to be used up or damaged during use including but not limited to filters ribbons printer paper gases oxygen sensors batteries and air conditioning leak detector tips SNAP ON SHALL NOT BE LIABLE FOR ANY INCIDENTAL SPECIAL OR CONSEQUENTIAL COST O...

Page 21: ...14 8 0 DECLARATION OF CONFORMITY ...

Page 22: ...NOTES 15 ...

Page 23: ...NOTES 16 ...

Page 24: ......

Page 25: ...ZEETA308D Printed 11 03 Snap on Kenosha WI 53141 1410 ...

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