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Electronics Forum / Electronics / July 2008New low cost Energy Meter
Spotted in the latest Renew magazine. After the ATA shop recalled the low cost energy meter (same as the Jaycar one) due to it being innacurate and basically a piece of crap, they now have a new one available. $69.95 http://shop.ata.org.au/cart.php?target=product&product_id=16518&category_id=255 and http://www.planetearthsolar.com.au/show_cat.php?cat_id=pum It is an Australian version of the very popular US Killawatt EZ model. 2% rated accuracy. Still nowhere near as cheap as the US model though (US$20). Dave. > Spotted in the latest Renew magazine. > After the ATA shop recalled the low cost energy meter (same as the Jaycar [quoted text clipped - 12 lines] > > Dave. planetearthsolar is 8 bucks cheaper, free postage :-) now, do I need one? Don...  SignatureDon McKenzie Site Map: http://www.dontronics.com/sitemap E-Mail Contact Page: http://www.dontronics.com/email Xbee Wireless Modules, and low cost Interface Boards. http://www.dontronics-shop.com/xbee-boards.html >> Spotted in the latest Renew magazine. >> After the ATA shop recalled the low cost energy meter (same as the Jaycar [quoted text clipped - 16 lines] > > now, do I need one? Of course you do. Go on, you know you want one... Correction: Should be 0.2% accuracy, not 2% as stated in the renew article and the ATA website. The Renew article makes out that it is the same as this US one: http://www.p3international.com/products/p4460.html Probably a newer model though. Dave. >> now, do I need one? > [quoted text clipped - 8 lines] > > Dave. killer manual :-) you talked me into it, before I saw this message Dave. Was thinking about getting the US model, as it is so much cheaper, but do I really need US to AU adapters hanging all over the place? Answer = NO Then I see: Operating Voltage: 115 VAC Max Voltage: 125 VAC Hmmm... There may be other complications. Well, surely they have 100 cents = $1, same as us YES? With the current exchange rate at .9612, perhaps I have to re-calibrate it. ;-) WOW! .9612 this morning. If they charge $49.95 for postage, I could really end up behind. Don... SignatureDon McKenzie Site Map: http://www.dontronics.com/sitemap E-Mail Contact Page: http://www.dontronics.com/email Xbee Wireless Modules, and low cost Interface Boards. http://www.dontronics-shop.com/xbee-boards.html :>> now, do I need one? :> [quoted text clipped - 35 lines] : :Don... I decided that even at $69.95 + $8 postage it was still worth it. If you join ATA you get 15% discount on the item cost. Some years back I imported a batch of Dual-Pro marine battery chargers from the US and when all of the costs involved with freight, customs clearance and other charges + import duty/sales tax etc were included it added about 32% to the purchase price. When ATA adds on all the extras plus a profit margin $69.95 isn't too bad. If a US seller uses one of those high priced couriers such as TNT or DHL you will be paying at least $40 to ship it out. Thanks to David for letting us know about it. Ross > :>> now, do I need one? > :> [quoted text clipped - 43 lines] > charges + import duty/sales tax etc were included it added about 32% to the > purchase price. You don't pay import duty or other taxes on low cost stuff like this, the limit is over $1000 now from memory. Hence the huge boom in people buying everything direct via eBay and other online shops these days. It would be cheaper to have the US one shipped here, but it's (claimed to be) not rated for 240V operation. > When ATA adds on all the extras plus a profit margin $69.95 > isn't too bad. Yeah, it's an ok price, certainly a lot cheaper than the SC power meter kit from Altronics. Dave. >>Some years back I imported a batch of Dual-Pro marine battery chargers from the >US and when all of the costs involved with freight, customs clearance and other >charges + import duty/sales tax etc were included it added about 32% to the >purchase price. When ATA adds on all the extras plus a profit margin $69.95 >isn't too bad. If a US seller uses one of those high priced couriers such as TNT >or DHL you will be paying at least $40 to ship it out. The keyword in the above is "batch". Individuals importing a single inexpensive item will have it arrive on their doorstep without any extra charges except delivery. Customs could, but don't, charge GST. Courier delivery like DHL can be expensive but the USPS has, at last, caught up with Australia Post for prompt service and their charges are comparable. :>>Some years back I imported a batch of Dual-Pro marine battery chargers from the :>US and when all of the costs involved with freight, customs clearance and other :>charges + import duty/sales tax etc were included it added about 32% to the :>purchase price. When ATA adds on all the extras plus a profit margin $69.95 :>isn't too bad. If a US seller uses one of those high priced couriers such as :>TNT or DHL you will be paying at least $40 to ship it out. :The keyword in the above is "batch". Individuals importing a single :inexpensive item will have it arrive on their doorstep without any :extra charges except delivery. Customs could, but don't, charge GST. :Courier delivery like DHL can be expensive but the USPS has, at last, :caught up with Australia Post for prompt service and their charges are :comparable. Yes, you are correct. Individuals importing 1 or 2 off direct won't be hit with these charges whereas ATA on the other hand, probably would because they are importing a commercial quantity, and they would have to pass on these costs to their customers. > I decided that even at $69.95 + $8 postage it was still worth it. If you > join > ATA you get 15% discount on the item cost. Please be sure to let us know how accurate it is at low power (like 1 watt) "Dand" >> I decided that even at $69.95 + $8 postage it was still worth it. If you >> join ATA you get 15% discount on the item cost. > > Please be sure to let us know how accurate it is at low power (like 1 > watt) ** One again - all you need to do is load it with a 56 kohm resistor to get 1 watt. Then a capacitor of say 1 uF ( 250 VAC) to see that it is measuring true power and not apparent power. ...... Phil :Spotted in the latest Renew magazine. :After the ATA shop recalled the low cost energy meter (same as the Jaycar [quoted text clipped - 12 lines] : :Dave. A quick search appears to show that the old Kill A Watt P4400 can be purchased for around US$17 but the cheapest I can find the EZ P4460 is around US$39, and this seller only posts to US destinations. Another seller http://item.express.ebay.com/ws/eBayISAPI.dll?ExpressItem&item=220251848977&FROM _MERCHANDIZING=1QQssPageNameZKP_Merch_CLOSED_ITEM_SIMILAR_LINK sells the EZ P4460 for US$41.95 plus US$11.95 postage which makes it around US$53 to buy direct from the US. But then you have the problem of the 115Vac input voltage to overcome and the need to use plug adapters. I think the higher price (AU$69.95) from ATA etc for the Australia specific version is well worth it. > A quick search appears to show that the old Kill A Watt P4400 can be purchased > for around US$17 but the cheapest I can find the EZ P4460 is around US$39, and [quoted text clipped - 7 lines] > price (AU$69.95) from ATA etc for the Australia specific version is well worth > it. $29.99 at Harbor Freight: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93519 Signaturehttp://improve-usenet.org/index.html If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm Sporadic E is the Earth's aluminum foil beanie for the 'global warming' sheep. :> A quick search appears to show that the old Kill A Watt P4400 can be purchased :> for around US$17 but the cheapest I can find the EZ P4460 is around US$39, and :> this seller only posts to US destinations. :> :> Another seller http://item.express.ebay.com/ws/eBayISAPI.dll?ExpressItem&item=220251848977&FROM _MERCHANDIZING=1QQssPageNameZKP_Merch_CLOSED_ITEM_SIMILAR_LINK :> sells the EZ P4460 for US$41.95 plus US$11.95 postage which makes it around :> US$53 to buy direct from the US. But then you have the problem of the 115Vac [quoted text clipped - 5 lines] : :http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93519 That price is for the P4400 (which I found goes for as low as $17) and not the P4460 EZ. > :> A quick search appears to show that the old Kill A Watt P4400 can be > purchased [quoted text clipped - 19 lines] > That price is for the P4400 (which I found goes for as low as $17) and not the > P4460 EZ. Sorry, you're right. That's what I get for posting when I can't use my good eye. :( Signaturehttp://improve-usenet.org/index.html If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm Sporadic E is the Earth's aluminum foil beanie for the 'global warming' sheep. :Spotted in the latest Renew magazine. :After the ATA shop recalled the low cost energy meter (same as the Jaycar [quoted text clipped - 12 lines] : :Dave. I discovered there is an even cheaper unit here. No specification data though. http://www.adapt2eco.com.au/index.php?main_page=product_info&products_id=267 > :Spotted in the latest Renew magazine. > :After the ATA shop recalled the low cost energy meter (same as the Jaycar [quoted text clipped - 14 lines] > > I discovered there is an even cheaper unit here. No specification data though.http://www.adapt2eco.com.au/index.php?main_page=product_info&products... Unfortunately exactly the same as the crap Jaycar unit that has been discussed. http://www.jaycar.com.au/productView.asp?ID=MS6115 Dave. |
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