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I need to measure temperature.....

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I need to measure temperature.....

Postby GlennP » Thu Jul 18, 2013 12:08 pm

Hi All,

As the title says I need to measure temperature over a wide range (+65 to -45), I have a bridge wired up with a thermistor and this gives out a voltage between 0 to 3 volts (I am powering off an external supply). Does this sound like the right approach for some one who is not familiar with your products. :?:

Glenn
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Re: I need to measure temperature.....

Postby GlennP » Thu Jul 18, 2013 1:24 pm

I have now read the documentation and found a K-type thermo-couple wish me luck :idea:
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Re: I need to measure temperature.....

Postby GlennP » Thu Jul 18, 2013 2:33 pm

Investigation into the K type thermocouple shows it outputting a very low voltage (0.051 mV for example) is this correct as it seems that this voltage could get lost in the noise of the system surroundings ( a Temperature chamber set at various temperatures (sub 0 to 75/80'C). Would this suitable as I find the K-type mentioned as the most suitable for this application. I unsure of how to connect it to a PicoLog 1000 board to a PicoLog1216 as the manual states for voltages of 0v to +2.5v there is no need to connect any additional components. So I have plugged it into channel 3. I am about to try it!


Glenn
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Re: I need to measure temperature.....

Postby GlennP » Thu Jul 18, 2013 3:19 pm

Hoorah! I am reading a voltage that appears to varying with temp!
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Re: I need to measure temperature.....

Postby Martyn » Fri Jul 19, 2013 9:22 am

A colleague will be contacting you through your email helpdesk ticket to explain how to use the logger to measure temperature. You can't plug thermocouples in without additional circuitry, cold junction compensation, and appropriate scaling of the values.
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Re: I need to measure temperature.....

Postby GlennP » Fri Jul 19, 2013 9:25 am

Thanks
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