Re: [WISPA] [WUG] Monitoring AC Current
> What about using a Hall Effect current clamp? Thought about that pretty hard. Actually ordered in some big cheap cheap torrids to go around the AC line. Never got time to try it though. >>> Use a bridge regulator on the shunt. Then meter the output of the bridge. >> >> Almost exactly what I am looking at doing now. Have PacketFlux 10 amp >> shunt on order. Will feed that into isolation transformer then with >> diode, capacitor and resisters convert that to a DC voltage. Am >> hoping with resistive voltage divider I can convert it to 0 - 300 mv >> since I have other plans for the other 12-30 volt inputs. >> >>> I want to monitor and graph current on a 120V AC line. Not DC current. WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] [WUG] Monitoring AC Current
What about using a Hall Effect current clamp? On Fri, Feb 25, 2011 at 2:38 PM, Matt wrote: >> Use a bridge regulator on the shunt. Then meter the output of the bridge. > > Almost exactly what I am looking at doing now. Have PacketFlux 10 amp > shunt on order. Will feed that into isolation transformer then with > diode, capacitor and resisters convert that to a DC voltage. Am > hoping with resistive voltage divider I can convert it to 0 - 300 mv > since I have other plans for the other 12-30 volt inputs. > >> I want to monitor and graph current on a 120V AC line. Not DC current. > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] [WUG] Monitoring AC Current
> Use a bridge regulator on the shunt. Then meter the output of the bridge. Almost exactly what I am looking at doing now. Have PacketFlux 10 amp shunt on order. Will feed that into isolation transformer then with diode, capacitor and resisters convert that to a DC voltage. Am hoping with resistive voltage divider I can convert it to 0 - 300 mv since I have other plans for the other 12-30 volt inputs. > I want to monitor and graph current on a 120V AC line. Not DC current. WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] [WUG] Monitoring AC Current
That was supposed to be bridge rectifier ...On 2/25/2011 1:53 PM, Blair Davis wrote: Use a bridge regulator on the shunt. Then meter the output of the bridge. On 2/25/2011 12:23 PM, Matt wrote: Why do you need to step that up instead of just using the 0-100mv input (labeled "shunt") on the packetflux sitemonitor. Not sure I'm following you. I want to monitor and graph current on a 120V AC line. Not DC current. WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] [WUG] Monitoring AC Current
Use a bridge regulator on the shunt. Then meter the output of the bridge. On 2/25/2011 12:23 PM, Matt wrote: Why do you need to step that up instead of just using the 0-100mv input (labeled "shunt") on the packetflux sitemonitor. Not sure I'm following you. I want to monitor and graph current on a 120V AC line. Not DC current. WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] [WUG] Monitoring AC Current
> Why do you need to step that up instead of just using the 0-100mv input > (labeled "shunt") on the packetflux sitemonitor. Not sure I'm following > you. I want to monitor and graph current on a 120V AC line. Not DC current. WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] [WUG] Monitoring AC Current
Why do you need to step that up instead of just using the 0-100mv input (labeled "shunt") on the packetflux sitemonitor. Not sure I'm following you. On 2/24/2011 3:43 PM, Matt wrote: > I need to monitor current on an AC line at a tower site. Like 5 amps > at 120 VAC. I would like to graph it with something like 'Site > Monitor' from 'Packet Flux' which has a 0 - 100mv DC input among other > inputs. Does anyone know a good way to convert to that hopefully with > some surge protection as well? > > Was considering using there 10amp current shunt right on the AC input > then using a transformer and rectifier to step that back up from 100mv > to about 1 - 3 volt DC. Then inputting that into the 'Site Monitor'. > Surely there is an easier way? > --- > Wireless Users Group us...@wug.cc > -- Randy Cosby| InfoWest, Inc | www.infowest.com Vice President | 435-674-0165 x 2010 | facebook.com/infowest WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
