The main drawback of the probe attached to the cheap measuring instruments - too thin and brittle conductive wires placed inside the cable insulation with a color (photo below).
Therefore, they are 1-2 weeks out of order; and contact can be lost at any time and almost anywhere. But even in the presence of high-quality cables with a thick inner residential user is immune from trouble. The reason is that in many product samples cables are not fixed in the body of the handpiece, which is why the entire load when the operator has to place on their rations.
Options to solve the problem
If you decide to make reliable in use probes yourself - should focus on the above-described disadvantages. To eliminate them, the following options are selected in the discretion of the user:
- Ali Express purchase quality leads with a soft and well fixed to the wire holder that even with heavy loads will last a very long time.
- To make them using an available auxiliary material and parts.
Important! The old conductors in any case should be thrown away together with L-shaped lugs for mating with the device (at intensive operation, they also are easily damaged).
The first of these methods needs no comment, because here it all comes down to additional costs. In the second case, the problem is solved is not easy, so the order of the upcoming action should be considered in more detail.
We are finalizing their own probes
For self-recovery probes need to prepare the following parts and tools:
- Two soft and thick conductor domestic production in isolation of different color (best of all - black and red, but it is not critical).
- Probes in a plastic housing, remaining after disassembly of the failed set (pictured one of possible sets is shown below).
- New terminals for interfacing with the slots of the device, taken from the national set (they do not necessarily have to be L-shaped, as shown).
- Soldering iron, cutting pliers and well-sharpened knife.
Preparing for recovery operations begins with the stripper guides, cut to a comfortable working length, with their subsequent twisting and tinning. After that you should take a metal probe and solder him one of the new wires. The same operation is done with the second connector set of the appliance. Following this come from old plastic tips are threaded through the cords, and then stretched in the solder probes.
Note: The size of the opening holes in their case is comparable in thickness to the diameter of the cable, so that the last stretch through the lugs have firmly.
With more firmly fixed on the probe tips are soldered with lead. Due to such a dense planting all the gaps at the joints will be selected and the power cord is securely mounted in a plastic case, almost forming a single whole with it.
Harder compound will issue from the other end of the test leads. It will have to find the ferrules, the diameter coinciding with the native L-shaped (from the unit). But even if this can not be done - it should not be upset, since in most cases they can be replaced with commercially available connectors (see photo below you can see that their diameters are the same).
For this part of the design of the metering group is important to find the appropriate diameter of the tube of PVC and put it on the wire before soldering. In conclusion, you need only to pull the plug on a steel pipe, then will test the cords on the continuity.