IF you do not enjoy the algebra, you can make a computer program to step through all possible fault conditions at 1m intervals and calculate the resistances to the left and right of fault and produce a look-up table or lookup graph as a ready reckoner to stick in the lid of the varnished wooden box for the meter.
The nice thing about bridge-like measurements is that you are only looking for a null,so the distance to fault result is not put in error by variation in the exact sensitivity of the meter or the battery voltage.
IF you do not enjoy the algebra, you can make a computer program to step through all possible fault conditions at 1m intervals and calculate the resistances to the left and right of fault and produce a look-up table or lookup graph as a ready reckoner to stick in the lid of the varnished wooden box for the meter.
The nice thing about bridge-like measurements is that you are only looking for a null,so the distance to fault result is not put in error by variation in the exact sensitivity of the meter or the battery voltage.
