Anyone know much about Cent a meters.

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http://www.centameter.com.au/products.htm

In particular, what their accuracy is at low power levels,less than 50
watts.
The tech specs on the units seem very vague about this.
Tnx



Re: Anyone know much about Cent a meters.

"Mauried"
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** The specs are damn vague about everything -  and deliberately so.

Here is the user manual:

http://www.clipsal.com/trade/__data/page/81/W624.pdf


What is clear is that the device is   NOT a power OR energy consumption
meter at all -  as it only detects the line current and assumes the supply
is 240 volts.

There is no spec for accuracy below 1 amp current  !!!!

The unit measures in VA and not power.

Wot a POS.




.....    Phil




Re: Anyone know much about Cent a meters.
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Wow, you're not wrong!
I heard this thing wasn't that greatest, but geeze...

Didn't this thing win on new inventors many years back? :->

Dave.

Re: Anyone know much about Cent a meters.



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**Just like that ridiculous LED streetlight last year. It seems that The
Inventors don't ask too many questions about the veracity of the claims.


--
Trevor Wilson
www.rageaudio.com.au



Re: Anyone know much about Cent a meters.
On Aug 26, 5:04 pm, "Trevor Wilson"
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They have had some howlers. No one ever gets a hammering on the show.

The Protex safety device springs to mind, it was much discussed on
here at the time.
http://www.abc.net.au/tv/newinventors/txt/s1356442.htm

I liked that Dragon's Den inventors show much better, they weren't
afraid to stick it to'em if the product was shite.

Dave.

Re: Anyone know much about Cent a meters.
I have been told that you need to replace the battery in the sensor nearly
once a month which is a complete pain.



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m...
50
consumption



Re: Anyone know much about Cent a meters.

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Thanks all.
The device did sound a bit dodgy.
The biggest problem with the Inventors show is the panel.
Some ppl who actually know something would help.


Re: Anyone know much about Cent a meters.



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**What a pathetic lie. SOME of the panel DO have some expertise in some
areas. It's just that they often know very little about some technologies.
Like the LED streetlights I previously cited.


--
Trevor Wilson
www.rageaudio.com.au



Re: Anyone know much about Cent a meters.
On Aug 27, 8:32 am, "Trevor Wilson"
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I agree that some of the panel do appear to have some expertise, but
it's not just expertise needed. If that was the case then they would
need an expert panel judge to cover every field possible.
What's needed is panel members (and/or even behind the scenes
researchers) who are better able to research the field and ask the
right questions. And they do get time to research the field in
question for each invention and prepare questions ahead of time.
Having at least one panel member who plays the devil's advocate role
would make the show much more interesting.

Dave.

Re: Anyone know much about Cent a meters.

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It's no different from the rest of bloody telly. The panel are certain to be
under instructions to keep it simple and pleasant. Although I recall one
instance when they nearly lost their rag when a guy came on claiming to have
an induction motor with vastly higher efficiency. And did anyone see the one
a few months ago when one of the panel suggested that the brother of the guy
showing his invention was thick as two planks (he was mentioned as trialling
the invention). And the brother was in the audience.



Re: Anyone know much about Cent a meters.

"Mauried"

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**  It works well enough for the purpose it is sold for - ie, monitoring the
power use of a  WHOLE  house.

Major home appliances ( and incandescent lighting ) have unity or near unity
power factor  -  only electronic stuff and CFLs do not.

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**  99% or all inventions are mechanical devices -  so the panel is made of
people who have expertise in that.


.....   Phil






Re: Anyone know much about Cent a meters.

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The cement mixer in tonites show might be reliable 'batch to batch' with the
same water supply, but not at all likely to be the same at a different
location.
No one even mentioned the widely variabe conductivity of water.
Surely thats what it is measuring?
What a bunch of crapp!

Mark





Re: Anyone know much about Cent a meters.

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If they'd thought about it a bit they could have killed more than one bird
with one stone. Replace the battery-hungry display with a mains powered
unit, that gives you a voltage reference, and a phase reference for one
phase if a 3-phase installation. you can then get a lot closer to a proper
(ie. real) power measurement by assuming that the phase set is angularly
symmetrical, which is likely to be the case with grid supply.

The way the manual is written, it looks less evasive than dumb. Maybe a bit
of both.



Re: Anyone know much about Cent a meters.
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but then they'd need to transmit a lot more data from the current
sensor, AIUI they're not allowed to transmit full-time on the band
they use. only short bursts...  so then they'd need a wired
connection...

Bye.
   Jasen

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