Cheap long lead thermometers

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Re: Cheap long lead thermometers

Post by AFewTooMany » Thu Jun 25, 2015 9:54 am

Well have a look at comark then. They seem to be pretty good quality

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Re: Cheap long lead thermometers

Post by sbond10 » Thu Jun 25, 2015 10:07 am

Why can't I use k type therma couples that come with the pid. What's special about a pt100

So to get a pid up and running I'd need a pid a probe a box 3 core cable and a plug. No connector blocks no connect this wire here thru this block. Just wrap the leads around the terminals. I'm presuming it's all well labeled ie live neutral earth then separate bits for the probe ?

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Re: Cheap long lead thermometers

Post by chris2012 » Thu Jun 25, 2015 11:28 am

I'm not sure theres any point personally of using a PID temperature controller if you're using gas for your whole setup.

The idea of the PID temperature controller, is to continuously monitor the temperature of something, in this case presumably the temperature of the mash, and turn the element on or off, according to the PID algorithm, in order to best try to maintain the specified temperature. (To control the mash temp electronically, you'd need the wort to either recirculate through a tube with an element in, that's called RIMS, or recirculate the wort through tubing immersed in a water bath with an element in, which is HERMS).

As you're using gas, you'd be better off with just a temperature probe.

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Re: Cheap long lead thermometers

Post by Cully » Thu Jun 25, 2015 11:47 am

Doh! its a controller. I on ly want a thermometer.
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Re: Cheap long lead thermometers

Post by sbond10 » Thu Jun 25, 2015 11:56 am

Yea I only want something to watch the temp whilst it's under insulation and maybe just watch to make sure the temp is rising

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Re: Cheap long lead thermometers

Post by aamcle » Sun Jun 28, 2015 11:24 am

K types are difficult to calibrate thus the PT100 and a PT100/PID combo can easily be cheaper than a "real thermometer".

A calibrated long lead thermometer could easily cost hundreds.

Aamcle

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Re: Cheap long lead thermometers

Post by keith1664 » Sun Jun 28, 2015 11:57 am

sbond10 wrote:Been looking at these
http://m.ebay.co.uk/itm/171661217516?nav=SEARCH

It will litrally be used to plonk in at mash stage (I'm biab)
Then fed thru the insulation and kept outside so I can monitor temp lost.
The main questions would be is there anything cheaper with at least a metre of cable.
and the next question would be do I really one I have glass thermometers and a food probe type one. Should I get to temp mash in measure temp then wrap like buggery(foil lined bubble wrap l, double duvet, heavy couch throw) then monitor temp at end.

Any advice is greatly received

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I use one like this, it works great.
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Re: Cheap long lead thermometers

Post by sbond10 » Sun Jun 28, 2015 12:04 pm

Yea I'm still undecided weather to build some now or buy a pre made one

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Re: Cheap long lead thermometers

Post by themadhippy » Sun Jun 28, 2015 12:44 pm

el cheapo ardunio,lcd display,or led if you wanna be retro and a 1 wire tempreture sensor,chuck in a bit of code job done
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Re: Cheap long lead thermometers

Post by sbond10 » Sun Jun 28, 2015 1:36 pm

Can probs wire up a pid but programming something is different and 0 experience at writing a programs

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Re: Cheap long lead thermometers

Post by themadhippy » Sun Jun 28, 2015 1:41 pm

and 0 experience at writing a programs
T'is very simple,well actually you nick the bits you need from various web sites and stick em together :mrgreen:
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Re: Cheap long lead thermometers

Post by sbond10 » Sun Jun 28, 2015 1:47 pm

Yep sounds complex lol. Does anyone know if the pid's they display as 60 degrees or 60.4 degrees ?

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Re: Cheap long lead thermometers

Post by aamcle » Sun Jun 28, 2015 2:16 pm

Both the PID's I have display 1 decimal place.

So that's 60.4°C.

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Re: Cheap long lead thermometers

Post by sbond10 » Sun Jun 28, 2015 2:30 pm

Cheers aamcle so as I'm only using it as a temp probe I don't need an ssr just a pid a probe and a 3 amp power lead and a plastic tub ?

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Re: Cheap long lead thermometers

Post by aamcle » Wed Jul 01, 2015 8:53 am

Mine was in a sandwich box for ages and your right you don't need a SSR.
uploadfromtaptalk1435737170705.jpg

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