Temperature Indicator on hot water cylinder

[petercaldicot]

I have a large cylinder with 3 divisions (for Immersion heater; Gas heating; and Solar heating)
The cylinder is insulated with cast-on foam.
I can't tell what temperature it is at, so I want a stick-on temperature Indicator.
Where can I get one please?

petercaldicot

 

[jase158]

You could use head thermometer and tape it to it, or a room thermometer, the card type, got these when I had little one, for free.

Problem is that heat rises so the top will be hotter then cold, and to get true temprature you would need to take some insulation off and tape to tank. Why do you need to know?

 

[jase158]

just had a quick look, some of these come with thermometer, does cylinder have hole for it at top? have you tried manufacturer?

 

[petercaldicot]

Thanks Jase
I am hoping to scrape off some insulation and glue a temp indicator to the copper tank.
I need to know because with solar heating you never know whether the water is hot or not.
Also with several people in the house, even if it is set to heat up every morning, you don't know if all the hot water has been used.
I am fed-up with turning on a tap and waiting to see if it runs hot or cold

 

[petercaldicot]

No hole in top.
I dont know manufacturer of tank.

 

[dontknowitall]

I thought it was a regulation to fit one to the hot water outlet?

 

[jase158]

Clip-On Pipe Thermometer: Heating Controls Online

you want something like this then?

 

[bob the plumber]

if you havent got some kind of tempreture sensor on your cylinder how does your solar pump and differential tempreture controller know when it right to kick in?