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Fluke 1663 MFT Advice

Former Community Member
Former Community Member
Hello

My fluke, intermittently gives a meassage ' batter lo 'indication when running low resistance continuity test (and doesn't then run the test) with a long lead and  when not zeroed ie continuity reading over a couple of ohms. The test current can toggle between 250mA or I think it's 20mA. It's fine at the lower current. The batteries are not flat. It's not the long lead as it's been tried with a new one and it does the same, Other leads have been changed, swapped etc and I'm sure it's the meter itself. Can't get any sense out of fluke technical.  It's done it from new. 2 years old and calibrated every year.  Anyone know why it might do this?  What are the quality of test result implications if I have  to use the lower current setting for doing the higher resistance readings

Driving me nuts and any help gratefully received

Thanks

Pat
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  • 0
    It may be that the batteries you have droop in voltage when asked to find the quarter of an amp - the internal voltage drop of the cells that will depend on the make of battery and the quality of the chemistry within, or if they are drying up a bit during storage.

    Or it may be that there is an extra resistance in the battery holder or it's wiring, which would have the same effect - are the springs still nice and shiny and holding the batteries tight ?  At the worst it may be an icky  connection internal to the device.

    Test a battery on volts, to see if it is not dead, but a quick flick on the 20A DC range of the multimeter will tell you how the internal resistance is doing - though before you break your multimeter, be aware a good alkaline chemistry AA cell can blow a 5A fuse (for example if you see 10 A when shorted  and 1,5 V open circuit voltage, then that  implies about 0,15 ohm internal resistance) - and obviously such a test does drain the cells quite rapidly.

    The meter hand book will tell you how the accuracy and precision vary with changing range.

    Mike.
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  • 0
    It may be that the batteries you have droop in voltage when asked to find the quarter of an amp - the internal voltage drop of the cells that will depend on the make of battery and the quality of the chemistry within, or if they are drying up a bit during storage.

    Or it may be that there is an extra resistance in the battery holder or it's wiring, which would have the same effect - are the springs still nice and shiny and holding the batteries tight ?  At the worst it may be an icky  connection internal to the device.

    Test a battery on volts, to see if it is not dead, but a quick flick on the 20A DC range of the multimeter will tell you how the internal resistance is doing - though before you break your multimeter, be aware a good alkaline chemistry AA cell can blow a 5A fuse (for example if you see 10 A when shorted  and 1,5 V open circuit voltage, then that  implies about 0,15 ohm internal resistance) - and obviously such a test does drain the cells quite rapidly.

    The meter hand book will tell you how the accuracy and precision vary with changing range.

    Mike.
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