Pool Temperature Monitoring

[mas985]

Mine is installed after the filter but in the same manner as fcfrey. I suspect the PB installed it after the filter so that the thermocouple will not collect dirt as quickly as before the filter.

[CJDahl]

Thanks for responses. This is very helpful. I'm just concerned about drilling into PVC causing a leak. No problems with O ring leaking??

[Poconos]

For plugging the drilled hole you can use a mixture of PVC cement and ground up PVC pipe to make a thick slurry. Squish it into the hole and let it set. I've used a rasp file to grind pipe or for finer stuff use a saw or a finer file.
Al

[mas985]

Thanks for responses. This is very helpful. I'm just concerned about drilling into PVC causing a leak. No problems with O ring leaking??

There should be a gasket or o-ring supplied with the thermocouple which will seal the gap between the pipe and thermocouple. And no, it should not leak if installed properly with the hose clamp.

[CrisL]

My sensor has been installed in the supply pipe before the filter for five years now, with no leaking.

[fcfrey]

As mentioned in previous posts, the thermocouple came with an O ring. I take mine off every year when I close and lube the O ring with plumbers silicone. I have never had a leak.

Another method I have used is to carefully drill a 7/16 hole then tap with a 1/4 pipe tap, this allows you to use conventional pipe fittings & teflon tape to make connections. I used this method to install the injection port for my bleach injection system. Again ---- NO LEAKS.