Inductive Ammeter

[Doug-Iowa]

Which way does the battery wire go thru the ammeter loop? I have a 50/50 chance but I'd like to get it right the first time. My guess is battery flow from the left to load on the right, to match the face (discharge to the left charge to the right)? Thanks.

 

[Bob]

I can't tell you for sure, and no one can, because you haven't told us if it's "as-original" (+) ground or a 12 Volt conversion with (-) ground.

 

[JMOR]

(quoted from post at 18:43:15 12/24/19) I can't tell you for sure, and no one can, because you haven't told us if it's "as-original" (+) ground or a 12 Volt conversion with (-) ground.

s Bob said, as well as , are you looking at back or front of meter? Left/right.

 

[oldseabee]

This is the way mine is, if it make any sense to you.

 

[Doug-Iowa]

I'm using the original 6V positive ground system. The current flow is as viewed from the gauge face side. I found a diagram on the web that seems to indicate the positive flow is from right to left. I'll try that and see what happens. Thanks

 

[JMOR]

(quoted from post at 23:09:02 12/24/19) I'm using the original 6V positive ground system. The current flow is as viewed from the gauge face side. I found a diagram on the web that seems to indicate the positive flow is from right to left. I'll try that and see what happens. Thanks

ollowing the wire from the battery (solenoid), it should pass thru the ammeter loop from the center of tractor , going toward outside of tractor and then to terminal block. backwards to what oldseabee shows. His must be neg ground?

 

[JMOR]

 

[Doug-Iowa]

Perfect, that's what I needed. Thanks and Merry Christmas to all!

 

[flagman12ron]

The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

 

[JMOR]

(quoted from post at 03:48:49 06/27/21) The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

oes not make any sense....there is NO electrical connection to it. The wire just passes nearby.

 

[TheOldHokie]

(quoted from post at 16:33:28 06/27/21)

(quoted from post at 03:48:49 06/27/21) The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

oes not make any sense....there is NO electrical connection to it. The wire just passes nearby.

Mansplaining - guess it has to be said to clear up any confusion on a 1-1/2 year old thread.

TOH

 

[JMOR]

(quoted from post at 16:38:22 06/27/21)

(quoted from post at 16:33:28 06/27/21)

(quoted from post at 03:48:49 06/27/21) The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

oes not make any sense....there is NO electrical connection to it. The wire just passes nearby.

Mansplaining - guess it has to be said to clear up any confusion on a 1-1/2 year old thread.

TOH

e are surrounded!.............by conspiracies! :roll:

 

[flagman12ron]

(quoted from post at 13:33:28 06/27/21)

(quoted from post at 03:48:49 06/27/21) The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

oes not make any sense....there is NO electrical connection to it. The wire just passes nearby.

There is a magnetic field around any electrical wiring that is energized and this ammeter is designed to sense it.

 

[JMOR]

(quoted from post at 05:38:35 06/29/21)

(quoted from post at 13:33:28 06/27/21)

(quoted from post at 03:48:49 06/27/21) The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

oes not make any sense....there is NO electrical connection to it. The wire just passes nearby.

There is a magnetic field around any electrical wiring that is energized and this ammeter is designed to sense it.

have & had no disagreement with how it functions, but with the proposition that such design some how causes fires!

 

[Jim WI]

(quoted from post at 09:10:02 06/29/21)

(quoted from post at 05:38:35 06/29/21)

(quoted from post at 13:33:28 06/27/21)

(quoted from post at 03:48:49 06/27/21) The 8n has been converted to 12v with negative ground, but what i have learned since i made a post about it is it does not make any difference what the voltage or ground is on this design gauge because it acknowledges the flow of electrons and if you were to put the wire on in the wrong direction and it reads what you think is wrong simply turn the wire around. this is what is called an inductive design and was very popular until a competitor sabotaged the gauge saying it caused fires etc. it looks to me like it is the way to go versatile as it is almost one size fits all

oes not make any sense....there is NO electrical connection to it. The wire just passes nearby.

There is a magnetic field around any electrical wiring that is energized and this ammeter is designed to sense it.

have & had no disagreement with how it functions, but with the proposition that such design some how causes fires!

I'm betting that the contention was that vibration would cause the metal sensing loop on the ammeter to wear through the insulation on the wire. I doubt that happens much, if at all. It would be interesting to see any contemporaneous source for this claim though.

 

[8NChris]

(quoted from post at 21:05:08 12/24/19)

id our tractors originally have a shunt? If not when did Ford introduce it?

 

[JMOR]

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08 12/24/19)

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

 

[Btzj02]

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08 12/24/19)

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

 

[TheOldHokie]

(quoted from post at 07:29:11 06/30/21)

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

Mansplaining should alwayd include a cryptic manigram

TOH

 

[JMOR]

(quoted from post at 08:07:57 06/30/21)

(quoted from post at 07:29:11 06/30/21)

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

Mansplaining should alwayd include a cryptic manigram

TOH

aahhhh....a resistor with a voltmeter across it, calibrated in amperes!

 

[8NChris]

Yes that is it, I've always known it as a shunt.

 

[JMOR]

(quoted from post at 09:25:55 06/30/21) Yes that is it, I've always known it as a shunt.

proper name for it. Never saw one on these old tractors, though. Maybe if disassembled a meter?

 

[8NChris]

Never opened up one myself that I remember. I know the ammeter with full load didn't seem to hold up as well as a monitoring type.

EDIT: The full load ammeter with 12 Volt, electronic ignition, AC that didn't fair well over time. I would assume a points ignition system pulling low amps would be fine.

This post was edited by 8NChris on 06/30/2021 at 07:06 am.

 

[8NChris]

(quoted from post at 07:03:05 06/30/21) Never opened up one myself that I remember. I know the ammeter with full load didn't seem to hold up as well as a monitoring type.

EDIT: The full load ammeter with 12 Volt, electronic ignition, AC that didn't fair well over time. I would assume a points ignition system pulling low amps would be fine.

This post was edited by 8NChris on 06/30/2021 at 07:06 am.

y the way the diagrams and photos you guys are posting should help a few folks out. I don't have problems remembering anything, it is just that my forgetter works so well. Thank's for posting.

 

[Btzj02]

(quoted from post at 06:34:12 06/30/21)

(quoted from post at 09:25:55 06/30/21) Yes that is it, I've always known it as a shunt.

proper name for it. Never saw one on these old tractors, though. Maybe if disassembled a meter?

Just to add to the fun!

 

[TheOldHokie]

(quoted from post at 08:45:10 06/30/21)

(quoted from post at 08:07:57 06/30/21)

(quoted from post at 07:29:11 06/30/21)

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08

id our tractors originally have a shunt? If not when did Ford introduce it?

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

ttps://forumphotos.yesterdaystractors.com/photos/mvphoto77688.jpg[/img]

I will defer to your professional training but not really a "shunt" ??? Merely an indirect measurement? More mansplaining???

TOH

This post was edited by TheOldHokie on 06/30/2021 at 03:07 pm.

 

[JMOR]

(quoted from post at 18:06:40 06/30/21)

(quoted from post at 08:45:10 06/30/21)

(quoted from post at 08:07:57 06/30/21)

(quoted from post at 07:29:11 06/30/21)

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

Mansplaining should alwayd include a cryptic manigram

TOH

aahhhh....a resistor with a voltmeter across it, calibrated in amperes!

I will defer to your professional training but not really a "shunt" ??? Merely an indirect measurement? More mansplaining???

TOH

This post was edited by TheOldHokie on 06/30/2021 at 03:07 pm.

have one of these, mounted on a box with a meter and use it to measure starter current.
https://www.solar-electric.com/midn...4588536901185459&utm_content=All Products

 

[TheOldHokie]

(quoted from post at 18:29:59 06/30/21)

(quoted from post at 18:06:40 06/30/21)

(quoted from post at 08:45:10 06/30/21)

(quoted from post at 08:07:57 06/30/21)

(quoted from post at 07:29:11 06/30/21)

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

Mansplaining should alwayd include a cryptic manigram

TOH

aahhhh....a resistor with a voltmeter across it, calibrated in amperes!

I will defer to your professional training but not really a "shunt" ??? Merely an indirect measurement? More mansplaining???

TOH

This post was edited by TheOldHokie on 06/30/2021 at 03:07 pm.

have one of these, mounted on a box with a meter and use it to measure starter current.
https://www.solar-electric.com/midn...4588536901185459&utm_content=All Products

Here is a 30A full scale ammeter from a TR3 with "precisely calibrated" shunt that changes the range to 60A. No - not mine ;-)

TOH

 

[JMOR]

(quoted from post at 07:54:41 07/01/21)

(quoted from post at 18:29:59 06/30/21)

(quoted from post at 18:06:40 06/30/21)

(quoted from post at 08:45:10 06/30/21)

(quoted from post at 08:07:57 06/30/21)

(quoted from post at 07:29:11 06/30/21)

(quoted from post at 20:23:58 06/29/21)

(quoted from post at 23:05:36 06/29/21)

(quoted from post at 21:05:08

id our tractors originally have a shunt? If not when did Ford introduce it?

lease point out "shunt" and define it. I have no idea of what you are referring to.

I think he means ammeter with 2 terminals instead of a wire going through a loop. The needle is deflected by only a small amount of current flow shunted around the main flow of current. I think I "mansplained " that right?

Mansplaining should alwayd include a cryptic manigram

TOH

aahhhh....a resistor with a voltmeter across it, calibrated in amperes!

I will defer to your professional training but not really a "shunt" ??? Merely an indirect measurement? More mansplaining???

TOH

This post was edited by TheOldHokie on 06/30/2021 at 03:07 pm.

have one of these, mounted on a box with a meter and use it to measure starter current.
https://www.solar-electric.com/midn...4588536901185459&utm_content=All Products

Here is a 30A full scale ammeter from a TR3 with "precisely calibrated" shunt that changes the range to 60A. No - not mine ;-)

TOH

hat'll work!