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> Head Temp gauge
Charles Freeborn
post Jan 3 2020, 08:26 PM
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Opinions? Thermo couple vs ?? Spark plug sender vs NPT... which cylinder? I've got questions!
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yeahmag
post Jan 6 2020, 04:53 PM
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QUOTE(Charles Freeborn @ Jan 3 2020, 06:26 PM) *

Opinions? Thermo couple vs ?? Spark plug sender vs NPT... which cylinder? I've got questions!


#3 is the cylinder to watch using the sender that goes under the plug. A Micro 1000 is what I run because it is temp compensated and looks right on my dash.

https://www.aircraftspruce.com/catalog/inpa.../CHT_gauges.php

In the future I may switch to this (link below) due to some additional features, like alerts:

http://thesensorconnection.com/cht-sensors...e-sensor-kit-fs
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GregAmy
post Jan 6 2020, 09:31 PM
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If you're into data acq, this guy has one with a 0-5VDC output. Uses any K type thermocouple.

Might add one of those to the race car...
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Charles Freeborn
post Jan 7 2020, 03:50 PM
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QUOTE(yeahmag @ Jan 6 2020, 02:53 PM) *

QUOTE(Charles Freeborn @ Jan 3 2020, 06:26 PM) *

Opinions? Thermo couple vs ?? Spark plug sender vs NPT... which cylinder? I've got questions!


#3 is the cylinder to watch using the sender that goes under the plug. A Micro 1000 is what I run because it is temp compensated and looks right on my dash.

https://www.aircraftspruce.com/catalog/inpa.../CHT_gauges.php

In the future I may switch to this (link below) due to some additional features, like alerts:

http://thesensorconnection.com/cht-sensors...e-sensor-kit-fs



This is the second rec for the aircraft style. One question - thought. How important is the temp compensation aspect in a sea-level vehicle? I understand the need in an aircraft situation where the ambient temps could swing radically, but is that an isusue in a car?
Thanks!
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jd74914
post Jan 7 2020, 04:08 PM
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QUOTE(Charles Freeborn @ Jan 7 2020, 04:50 PM) *

This is the second rec for the aircraft style. One question - thought. How important is the temp compensation aspect in a sea-level vehicle? I understand the need in an aircraft situation where the ambient temps could swing radically, but is that an isusue in a car?
Thanks!

The compensation is actually for the junction block at the back of the unit reading, so in this case you're compensating for cabin (or dash/center console) temperature if mounted there. Without compensation it'll assume something like 68*F temperature, so you could theoretically see errors of +/-30*F depending on cabin temperature. I think it's worth it as that's quite considerable error on a 300*F measurement.
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jd74914
post Jan 7 2020, 04:12 PM
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If you don't care about looks there are a bunch of panel mount industrial display options which run on 12VDC and may be cheaper than the "aerospace" stuff. All you need is something that reads Type-K thermocouples.
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Charles Freeborn
post Jan 8 2020, 10:53 AM
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QUOTE(jd74914 @ Jan 7 2020, 02:08 PM) *

QUOTE(Charles Freeborn @ Jan 7 2020, 04:50 PM) *

This is the second rec for the aircraft style. One question - thought. How important is the temp compensation aspect in a sea-level vehicle? I understand the need in an aircraft situation where the ambient temps could swing radically, but is that an isusue in a car?
Thanks!

The compensation is actually for the junction block at the back of the unit reading, so in this case you're compensating for cabin (or dash/center console) temperature if mounted there. Without compensation it'll assume something like 68*F temperature, so you could theoretically see errors of +/-30*F depending on cabin temperature. I think it's worth it as that's quite considerable error on a 300*F measurement.



Excellent. Yes, a 30ยบ error could be fatal to the top end. Thanks!
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