Hall effect amp-hour counter
Hi, Has anyone found a Hall Effect amp-hour counter?
Forum Discussion
I guess the engineer in me trumps other considerations. Compare that exposed and vulnerable circuit board to...
Blue Sea Systems 8255 Digital Meter Shunt (500A/50mV)
by Blue Sea Systems
Be the first to review this item
List Price: $73.51
Price: $49.99 & FREE Shipping. Details
You Save: $23.52 (32%)
 by Blue Sea Systems Be the first to review this item List Price: $73.51 Price: $49.99 & FREE Shipping. Details You Save: $23.52 (32%) height=500 width=500)
I simply do not trust the longevity nor durability of inductive DC AMPERE collectors. The silicon steel lamination's oxidize over time, the amplifier board is permanent. It is subjected to cruel transient voltage spikes from the DC system. Every one I tried degraded to uselessness over a five year period. The circuit components in the board drift as they decompose. With a six gigawatt electric car error does not mean much. With AGM batteries and monitoring fine resolution for determining final 5% charge status you could not GIVE ME an inductive pickup meter setup.
The Manganin shunt pictured is ultra precise. What IS SENSITIVE about shunt ammeters is the integrity of the two small meter wires. They MUST MUST MUST MUST MUST be soldered to the #6 ring terminals. I solder my meter leads DIRECTLY to the brass blocks. I use silicone grease allover the major power wire termination connections.
Gigantic Manganin shunts are IMPRACTICAL for EV cars. I spray heavy duty silicone spray over the metal of the shunt for oxidation resistance.
To each his own. No criticism intended. But good meters do not come cheap. I suggest a meter brand and model popular in alternative energy 12 volt homes circuit.
Blue Sea Systems 8255 Digital Meter Shunt (500A/50mV)
by Blue Sea Systems
Be the first to review this item
List Price: $73.51
Price: $49.99 & FREE Shipping. Details
You Save: $23.52 (32%)
I simply do not trust the longevity nor durability of inductive DC AMPERE collectors. The silicon steel lamination's oxidize over time, the amplifier board is permanent. It is subjected to cruel transient voltage spikes from the DC system. Every one I tried degraded to uselessness over a five year period. The circuit components in the board drift as they decompose. With a six gigawatt electric car error does not mean much. With AGM batteries and monitoring fine resolution for determining final 5% charge status you could not GIVE ME an inductive pickup meter setup.
The Manganin shunt pictured is ultra precise. What IS SENSITIVE about shunt ammeters is the integrity of the two small meter wires. They MUST MUST MUST MUST MUST be soldered to the #6 ring terminals. I solder my meter leads DIRECTLY to the brass blocks. I use silicone grease allover the major power wire termination connections.
Gigantic Manganin shunts are IMPRACTICAL for EV cars. I spray heavy duty silicone spray over the metal of the shunt for oxidation resistance.
To each his own. No criticism intended. But good meters do not come cheap. I suggest a meter brand and model popular in alternative energy 12 volt homes circuit.
