Can you extend the lead on a thermometer?

[rogerthebodger]

Quick update, as above, it works fine.
Extended the wires on 1 thermometer, and left 3 as controls.
Ambient temperatures were all showing similar, then dropped the probes into a cup of water at around 70degC
The temperature variation across all 4 thermometers was well under 1 deg C, with the worst culprit being one of the uncut ones.
I didn't go as far as plotting RSD values across a range of temperatures but suffice to say they will serve my needs of giving warning of temperature changes on the exhausts.

Good news.

 

[nigelmercier]

I've been meaning to do this for some time, but not sure of a reliable way of mounting the probe; I really don't want to pierce the hose.

 

[Murv]

I've been meaning to do this for some time, but not sure of a reliable way of mounting the probe; I really don't want to pierce the hose.

I'm just going to wrap the probe to the outside of the hose with electrical tape, I don't want to pierce it either.
I appreciate there will be a delay in the temperature rising doing it that way, but I imagine it will still heat up fairly rapidly with reduced water input and is better than the nothing I currently have in place!
Other risk is that the tape could melt and just come off, but either way I'm going to see a large temperature change and can investigate.
I can report back with how effective it is if of any interest?

 

[rogerthebodger]

I've been meaning to do this for some time, but not sure of a reliable way of mounting the probe; I really don't want to pierce the hose.

I had the same issue with not wanting to pierce my exhaust hose so I mounted, in my case a bimetal switch on my exhaust elbow just before the injection point on the metal part of the elbow.