Three more parcels arrived in the post today. The smallest contained the missing rivet nuts from China; which are now no longer required after I got impatient and purchased some locally a fortnight ago. What was interesting was the information on the envelope.
In the top right of the above photo you can see the stamp is Emirates Airline and on the reverse of the envelope was………
It appears my 10 rivet nuts were sent from China to Germany and transported from there to Perth by Emirates Airline. No wonder they took so long to arrive!
The second package contained the MPPT solar controller I’d ordered from China. It will control the output from the solar photovoltaic 150W panel to the 12V pump.
Pen to give an indication of size.
I’m not quite silly enough (yet) to believe this is a genuine MPPT controller. It’s more likely a cheaper PWM Controller. However it should do the job.
The last package contained the thermal sensor. It’s actually for a motorbike but I plan to fit it into the solar hot water panel outlet.
Some timely deliveries as I was starting to run out of project components.
6 comments :
FYI
https://www.facebook.com/groups/CanalMarketPlace/permalink/3168664296747037/
Lots of China sellers have warehouses in the EU as that is where most sales go.
More than one person in the UK has bought that controller believing it was a MPPT
I hope the thermal sensor is mounted onto the heating panels so heat from them is conducted to the sensor as it needs to sense the temperature of the water in the panels when the pump is off.
What are you doing about turning the pump off before the water gets so hot the mermaid complains?
Alf,
Your link takes me to an Ad for someone selling a board game? Are you trying to tell me I need something more intellectually stimulating? :-) :-)
Brian it just seemed strange the 10 nuts would be sent from Germany when China is much closer (to us).
The solar controller is too cheap and small to be anything other than PWM.
Paul.
You are pre-empting the next blog post :-).. The sensor will be fitted into the hot water outlet on the panel. This is where the water will reach it's maximum temperature. It will act a a pump switch. It is almost impossible for the water temperature to result in boiled buttock of mermaid :-) The panel has a capacity of approx 50 litres and the pool is 16,000.
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