Current Sensors: Difference between revisions
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Instead of using resistor shunts to measure battery or alternator currents, one can also use Hall effect sensors that do not necessitate to cut the cable and run the current through a shunt (more failure points). | Instead of using resistor shunts to measure battery or alternator currents, one can also use Hall effect sensors that do not necessitate to cut the cable and run the current through a shunt (more failure points). | ||
Garmin recommends the Amploc Key100 sensor. Reportedly, Dynon also recommends it. GRT sells the Key100 sensor as CS-01 ($89 includes cable though)<br> | Garmin recommends the Amploc Key100 sensor. Reportedly, Dynon also recommends it. GRT sells the Key100 sensor as CS-01 ($89, includes cable though)<br> | ||
Shunts need 1A inline fuses for each of the two current sensor connectors, Hall effect sensors do not. | Shunts need [https://www.digikey.com/en/products/detail/littelfuse-inc/0251001-NRT1L/700721 1A inline fuses] for each of the two current sensor connectors, Hall effect sensors do not.<br>[https://amploc.com/products/key100-open-loop-hall-effect-sensor AMPLOC KEY100 Current Sensor]<br>[[File:2023-03-27 16-03-50.jpg|367x367px]]<br>The Key100 sensor doesn't really have a proper Molex connector, rather it has 3 gold pins that are cut off a wire-wrap pin-header strip plus a plastic glued on that makes it asymmetric for Molex connectors. You need to cut off one of the protruding keys on the Molex connector to make it fit. You also want to scrape off the ledge at the bottom if it is binding there.<br> | ||
[[File:2023-03-31 09-46-47.jpg|400x400px]]<br><br> | |||
The Key100 sensor doesn't really have a proper Molex connector, rather it has 3 gold pins that are cut off a wire wrap pin header strip plus a plastic glued on that makes it asymmetric for Molex connectors.<br> | Here is a somewhat compatible Molex connector (needs small mods, see above): | ||
* [https://www.digikey.com/en/products/detail/molex/0022011032/403289?s=N4IgTCBcDa5gtABgIz2YgzBAugXyA Molex 0022011032 connector housing @Digikey (in stock)] | |||
* [https://www.digikey.com/en/products/detail/molex/0022011032/403289?s=N4IgTCBcDa5gtABgIz2YgzBAugXyA Molex 0022011032 connector housing @ Digikey (in stock)] | * [https://us.rs-online.com/product/molex-incorporated/22-01-1032/70332831/ Molex 0022011032 connector housing @RS (in stock)] | ||
* [https://us.rs-online.com/product/molex-incorporated/22-01-1032/70332831/ Molex 0022011032 connector housing @ RS ( | |||
22 AWG Pins | 22 AWG Pins | ||
* [https://www.digikey.com/en/products/detail/molex/0008550102/172056?s=N4IgTCBcDaIAwA4C0BWFS4EY4QLoF8g 22 AWG gold plated 08550102 pins for Molex connector @Digikey (in stock)] | * [https://www.digikey.com/en/products/detail/molex/0008550102/172056?s=N4IgTCBcDaIAwA4C0BWFS4EY4QLoF8g 22 AWG gold plated 08550102 pins for Molex connector @Digikey (in stock)] | ||
* [https://us.rs-online.com/product/molex-incorporated/08-55-0102/70191082/ 22 AWG gold plated 08550102 pins for Molex @ RS ( | * [https://us.rs-online.com/product/molex-incorporated/08-55-0102/70191082/ 22 AWG gold plated 08550102 pins for Molex connector @RS (in stock)] | ||
Crimper | |||
* [https://www.digikey.com/en/products/detail/adafruit-industries-llc/1213/8258462 Adafruit SN-28B Crimper] (use smallest diameter opening, floor of pin gets pushed in, lugs bend and fold when pushed into upper part) | |||
Pins | |||
* 1 (inner): 5V | |||
* 2 (middle): GND | |||
* 3 (outer): Output, 15.9 mV / Amp and 0 Amps is at 2.5V, however some were accidentally shipped out that look identical that have only 10.4 mV/A. Amploc will exchange those. Consider testing them after arrival. | |||
Mounting | |||
* Some have made 3D-printed holders for the current sensor, check the links on the [[3D-Printed_Tools_and_Parts]] page. You can also use a size 24 Adel clamp (e.g.[https://www.aircraftspruce.com/catalog/pnpages/MS21919-DG24.php at Spruce]). | |||
See also | See also | ||
* [https://vansairforce.net/community/showthread.php?t=179694 this VAF thread] | * [https://vansairforce.net/community/showthread.php?t=179694 this VAF thread] | ||
* [https://vansairforce.net/community/showthread.php?t=176690 this VAF thread] | * [https://vansairforce.net/community/showthread.php?t=176690 this VAF thread] | ||
* [https://www.facebook.com/groups/vansrv10/posts/5926763594111357 this FB thread] | * [https://www.facebook.com/groups/vansrv10/posts/5926763594111357 this FB thread] | ||
* [https://www.facebook.com/groups/vansrv10/posts/6504216559699388 this FB thread] | |||
[[Category:Optional]] | |||
Latest revision as of 20:54, 29 January 2025
Instead of using resistor shunts to measure battery or alternator currents, one can also use Hall effect sensors that do not necessitate to cut the cable and run the current through a shunt (more failure points).
Garmin recommends the Amploc Key100 sensor. Reportedly, Dynon also recommends it. GRT sells the Key100 sensor as CS-01 ($89, includes cable though)
Shunts need 1A inline fuses for each of the two current sensor connectors, Hall effect sensors do not.
AMPLOC KEY100 Current Sensor
The Key100 sensor doesn't really have a proper Molex connector, rather it has 3 gold pins that are cut off a wire-wrap pin-header strip plus a plastic glued on that makes it asymmetric for Molex connectors. You need to cut off one of the protruding keys on the Molex connector to make it fit. You also want to scrape off the ledge at the bottom if it is binding there.
Here is a somewhat compatible Molex connector (needs small mods, see above):
- Molex 0022011032 connector housing @Digikey (in stock)
- Molex 0022011032 connector housing @RS (in stock)
22 AWG Pins
- 22 AWG gold plated 08550102 pins for Molex connector @Digikey (in stock)
- 22 AWG gold plated 08550102 pins for Molex connector @RS (in stock)
Crimper
- Adafruit SN-28B Crimper (use smallest diameter opening, floor of pin gets pushed in, lugs bend and fold when pushed into upper part)
Pins
- 1 (inner): 5V
- 2 (middle): GND
- 3 (outer): Output, 15.9 mV / Amp and 0 Amps is at 2.5V, however some were accidentally shipped out that look identical that have only 10.4 mV/A. Amploc will exchange those. Consider testing them after arrival.
Mounting
- Some have made 3D-printed holders for the current sensor, check the links on the 3D-Printed_Tools_and_Parts page. You can also use a size 24 Adel clamp (e.g.at Spruce).
See also