ETC 200 AND PT100

[Mark1964]

does anyone use the above for controlling the HLT temp and if so where did you get it

thanks

 

[Northern Brewer]

Mark

see here viewtopic.php?f=13&t=20529

I bought probes, SSR's and PIDS from ebay - used REX 100 PIDS - just tested it all and works lovely. Had to change the thermocouple type from K to PT100 on the PID menu but that was a doddle, instructions came with them.

See schematic below

Cheers
NB

 

[Mark1964]

ok thanks ill have a look :thumb:

 

[jamesb]

Mark, the ETC 200 will not take a pt100 sensor. It's designed for a 10k NTC Thermistor.

 

[Mark1964]

i know that now made a cock up with it im not very good with electric gadgets need something to control hlt temp

 

[jamesb]

I use the cheapo PIDs from Virtual Village with any random 25A SSR from Ebay.

Ok, may not be random but most on there will work.

 

[Mark1964]

ive looked on there do u have a link and will i need a heat sink too

 

[jamesb]

PID

SSR

Pt100

I don't trust the cheapo (<£9) Chinese SSRS, although I suspect they're probably fine.

 

[Mark1964]

Thanks James it will need a heat sink too??? or not

 

[jamesb]

Yes. You'll need to remove the heat from the SSR. I have a 3mm thick ali sheet that I use as a panel. About 3u 19" case size.

You might be able to get away with a diecast box from Maplin if they still do them.

 

[Mark1964]

Ok thanks for the help :thumb: :

 

[Northern Brewer]

All the bits I put in the link work fine together and the PIDS are a tenner and the probes less than a fiver inc postage. I'll try and post a few pictures showing the prototype I used - I have the asparagus steamer for the HERMS on order but the protoype with a tesco kettle proves the principle - not sure why you need to take the heat sink off the SSR?? even if you bolt it to a plate.

I bought thte following box to stick it all in http://www.ebay.co.uk/itm/120816940298? ... 1439.l2649

its deep enough for SSRs on heatsinks and fans etc. - obviously ruins the IP rating if you cut holes in it but if yuo are careful with placement it will help.

Cheers
NB

 

[tazuk]

here is how i did mine as far as i know if you get a thick base plate mount with thermo paste will be ok i did mine like muddy disco as his is working sweet and base plate was cold :thumb:

viewtopic.php?f=13&t=19526

 

[Northern Brewer]

Nice job Tazuk :thumb: - my SSRs came with heatsinks so I was going to bolt them to a plate but not remove the heatsinks as I have plenty of room in the box.

 

[jamesb]

Who mentioned removing the heatsinks? Don't do that.

 

[tazuk]

i think he was talking about my post :thumb: as i did not use any just steel plate :thumb:

Who mentioned removing the heatsinks? Don't do that.

 

[Northern Brewer]

my mistake - should have read the post more thoroughly! it was 3am new years day! :party: : :drink: :drunk:

I've updated PID probe and SSR purchase thread with some pictures