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How to measure water tempreature ?

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moottii

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Hi friends,
Can anybody tell me how to measure water temperature ?
I mean introducing good sensors for measuring.
thanks
 

You whant to measure temp in car, house heating system, in river ? What temp range you expect ? What is shape of water container ? Water is liquid or standing ? Water is on athmospheric preasssure or in closed system ?
 

I wanna measure temperature in s.th like a pool (a pool for fish farming ).
I suppose the expected range must be [-20 50].
As you know these kinds of pools are on atmospheric pressure.
 

I wanna measure temperature in s.th like a pool (a pool for fish farming ).
I suppose the expected range must be [-20 50].
As you know these kinds of pools are on atmospheric pressure.

You can use then digital DS18B20 sensors sealed with silicon in some pvc tube and no problem. You can add several sensor to different deep of water.
 
You can also try a thermistor and a RTD or a thermocouple
 
How can I work with this sensor?(with micro or s.th else)
and how much is the price?
thx
 

If you need just to see temp you can use this circuit :

SE-TEMP schema.gif
 
Hi,

Sure Electronics do the DS18B20 sensor in a sealed metal case and with a 3 m plugged lead - using several without any problem.
**broken link removed**
 
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