The Mitsubishi Pajero Owners Club®

NTZ · * Joined: 27 Jan 2003 Posts: 13 Location: Finland

Hi all,

I get bored to see -26 C all the time in my indoor temperature gauge.

I found that the sensor is a 1000 ohm NTC thermistor (in fact 1000 ohms gives 24 C instead of 25 C but my 1000 ohm resistor was only 999 ohms) . I didn't bother to make reverse engineering to calculate specifications (and there are blenty of those thermistors). Here are some resistances and corresponding temperatures:

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Trig · ****** Joined: 24 Nov 2002 Posts: 1379 Location: N. Cyprus

Thanks Marko, these are helpful Smile

Question: I am still not sure how these thermistors work, let's say we use an 820 ohm thermistor, does it mean the MAX temp. that can be measured is 29C !?... and if so, what thermistor value is needed to measure inside temp about 40C !!!! In summer that's how hot it is in Cyprus Smile

NTZ · * Joined: 27 Jan 2003 Posts: 13 Location: Finland

Hi Trig,

you need a 1000 ohm thermistor, thermistors are "named" with resistance at 25 C. So called nominal value.

Ntc thremistor is a component that gives high resistance value in cold and the resistance is decreasing logarithmically when warmer. Pajero temp gauge cannot show less than -26 C, max value is more than 60 C. The thermistor will be wide enough (i.e. -25C .. +80C), the temp gauge is the limiting part of the system. Here is some more values for warmer end: