Thread: very inexpensive digital temp gauge

Oh God, not electronics again . . . it never makes any sense. Is this: 1PCS 1M K Thermocouple Temperature Sensor | eBay what you mean?

I drove the car for the first time today after fitting the gauge.

It runs about 91-93 C after warming up, no difference with aircon on on a 26c or so day.
It tends to change a lot from 90.something up to 93 , then down on override etc.

This raises the question to me whether an 88C thermostat just starts to open at 88C or is fully open. My guess is that it just starts at 88C and is fully open at 92-93.
I have never been able to find anything in writing that specifies this.
Regards Philip A

Originally Posted by PhilipA

[snip]

This raises the question to me whether an 88C thermostat just starts to open at 88C or is fully open. My guess is that it just starts at 88C and is fully open at 92-93.
I have never been able to find anything in writing that specifies this.
Regards Philip A

T/stats temp rating is always an opening temperature, and according to Tridon, maximum lift/fully open is usually around twelve degrees above the crack temp.

just bought 2

I tested quite a few thermostats last year and was surprised to see that the number stamped on each one was the opening temperature. I say I was surprised because I'd just assumed that it was the fully opening temperature. When I put a thermostat back into the V8, I'll use a 74 degree one since there's no ECU to keep happy.

shame it maxes out at 110 would have been "Cool" for the ZF transmission

Originally Posted by spudboy

Just bought two!

Am now looking for some additional 'thermistors' (is that the right terminology?) so I can have a couple of different temperatures to measure on the one unit, and switch between them..... such as radiator temp, exterior temp, etc

The device shown on ebay (with digital readout) only measures one item at a time unless you plan on making a switch but you will most likely need to use the same thermocouple (or thermistor) and also the same length of the cable otherwise the resistance may give you a false reading.

Not sure how the system works or requirements for calibration but the device really is only set-up to measure one item.

I have used thermocouples before to test concrete temperatures when setting. Needed to stay under 80 degrees C.

Regards
Andrew

Originally Posted by PhilipA

I drove the car for the first time today after fitting the gauge.

It runs about 91-93 C after warming up, no difference with aircon on on a 26c or so day.
It tends to change a lot from 90.something up to 93 , then down on override etc.

This raises the question to me whether an 88C thermostat just starts to open at 88C or is fully open. My guess is that it just starts at 88C and is fully open at 92-93.
I have never been able to find anything in writing that specifies this.
Regards Philip A

You should be able to find this information in Rave. Pedro found this information in RAVE for a D2a. (opening commecing at 82).

Regards
Andrew