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temp sending unit impedance value

B

beamdream

Gold Level Sponsor
Excellent work, yes this must go into the Archives.

I have recently been down this road with my Series 1 but am still not altogether sure I got it right; I was working on measuring the rad temp with a thermal detector and then comparing this with the sender unit impedance measurements I had made, hoping then I could confirm what the guage was telling me.

I don't remember the numbers now, but if I recall correctly there were a couple of sender units that suited my Series and with a bit of research I was able to establish their correct resistance range.

Now that you have come up with these numbers I will definitely be back into it to establish where my temp is at. Many thanks again.
 
Chazbeam

Chazbeam

Silver Level Sponsor
beamdream said:
Excellent work, yes this must go into the Archives.

Now that you have come up with these numbers I will definitely be back into it to establish where my temp is at. Many thanks again.
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Hay BeamDream thanks....that's Great I look forward to seeing your results..

My local machine parts shop has a lot of old vintage stuff and we are going to try and match a sender with mine and the right resistances....I will let you guys know how that goes.. If i can ill get some part numbers off the ones i find that match.(if any)..

I am thinking if you get a sender that at room temperature reads around 100 to 77 ohms this would be the one that works with these meters...

I recall a thread or site where people had found alternate part sources for some things like brake masters etc...If anyone remembers that chime in... It would be good to add to that and our archive if we can come up with something...

Cheers
Chaz
 
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T

Tom H

Platinum Level Sponsor
Chaz said:

I am thinking if you get a sender that at room temperature reads around 100 to 77 ohms this would be the one that works with these meters...
Click to expand...

I think you want a sender that is about 150 ohms at "room temp", i.e. around 25 C or 77 F. Note that your tests showed the needle just off zero, or around 90 F with 100 Ohms. So a sender at 100 Ohms at 90F is about right. But that's a pretty warm "room". These senders have a pretty steep curve.

Tom
 
Chazbeam

Chazbeam

Silver Level Sponsor
YES good point tom

Tom H said:
I think you want a sender that is about 150 ohms at "room temp", i.e. around 25 C or 77 F. Note that your tests showed the needle just off zero, or around 90 F with 100 Ohms. So a sender at 100 Ohms at 90F is about right. But that's a pretty warm "room". These senders have a pretty steep curve.

Tom
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HA!..Ah yes Tom i didn't think of that..True 90 degrees room temp is kinda HOT..LOL

But i do live in southern Cal..its all possible it was hot that day i did the measurements.....

Chaz
 
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alsalp

alsalp

Donation Time
Anyone have a part number for temp sender that will work in a SV with 2.8 v6 and original Lucas gauge?
My original ran on the hot side.
Also would like 3/8 npt
 
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