<div dir="ltr"><div>If the fridge / freezer is not performing it is likely to be a problem in either the compressor, seals or the thermostat or a combination of those. I would be tempted to graph the temperature. If the temperature is too low, replace the thermostat. If the temperature not low enough inspect the seals and if the seals are fine, the compressor is probably worn out so recycle it.<br><br></div><div>This device comes with a temperature probe and you can file the results from the USB interface and plot them using your favourite spreadsheet or gnuplot: <a href="https://www.aliexpress.com/item/HYELEC-MS8236-6000-Counts-Digital-Multimeter-with-T-RMS-USB-1000V-10A-60M-Ohm-100mF-10MHz/32531814702.html">https://www.aliexpress.com/item/HYELEC-MS8236-6000-Counts-Digital-Multimeter-with-T-RMS-USB-1000V-10A-60M-Ohm-100mF-10MHz/32531814702.html</a><br><br></div><div>Let us know how the saga develops.<br></div><div><br></div>Richard Jones<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 13, 2017 at 5:40 PM, Mark Beckett <span dir="ltr"><<a href="mailto:m.beckett@amuri.net" target="_blank">m.beckett@amuri.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">The original emails said<br>
I bought an old fridge off Trade Me and it seems to be on /most/ of the time, so I'd like to graph it's usage to see what's going on<br>
<br>
Not sure how you graph it, but it will do an accumulative total.<br>
<br>
Maximum load from a standard mains outlet is 10A @240v which equal 2400watts.<br>
If I recall correctly we tried them on servers so 300-800w loads.<br>
It could be that the loads were a SMPS and it prefers a nice clean resistive load.<br>
<br>
Specs say 1% on voltage and 1% on current so is that 2% total??<br>
<br>
<br>
Mark<br>
<br>
<br>
<br>
<br>
<br>
hamster wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Is the original use-case (a fridge) a "low load", given that a plug can deliver over 2,000 Watts?<br>
<br>
I could imagine that a TV on standby could be lost in the noise...<br>
<br>
On 13.01.2017 15:10, <a href="mailto:m.beckett@amuri.net" target="_blank">m.beckett@amuri.net</a> wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
A small warning.<br>
We found these to be very inaccurate at low loads.<br>
<br>
Mark<br>
<br>
<br>
On 2017-01-13 08:30, Marshland Engineering wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Cheap easy option <a href="https://www.jaycar.co.nz/mains-power-meter/p/MS6115" rel="noreferrer" target="_blank">https://www.jaycar.co.nz/mains<wbr>-power-meter/p/MS6115</a> Cheers Wallace. ______________________________<wbr>_________________ Chchrobotics mailing list <a href="mailto:Chchrobotics@lists.linuxnut.co.nz" target="_blank">Chchrobotics@lists.linuxnut.co<wbr>.nz</a> <mailto:<a href="mailto:Chchrobotics@lists.linuxnut.co.nz" target="_blank">Chchrobotics@lists.lin<wbr>uxnut.co.nz</a>> <a href="http://lists.ourshack.com/mailman/listinfo/chchrobotics" rel="noreferrer" target="_blank">http://lists.ourshack.com/mail<wbr>man/listinfo/chchrobotics</a> Mail Archives: <a href="http://lists.ourshack.com/pipermail/chchrobotics/" rel="noreferrer" target="_blank">http://lists.ourshack.com/pipe<wbr>rmail/chchrobotics/</a> Meetings usually 3rd Monday each month. See <a href="http://kiwibots.org" rel="noreferrer" target="_blank">http://kiwibots.org</a> for venue, directions and dates. When replying, please edit your Subject line to reflect new subjects.<br>
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