remote thermometer ideas?
 

heatbank in an attached barn with attached mechanical temp gauge
mounted in/on it.

Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"
- temp range say abt 30 to 90 deg c
- wired is fine tho if cheap wireless acceptable :)
- (don't fancy the car type umbilical even if accurate....

cheers
JimK

remote thermometer ideas?
 

JimK
wibbled on Monday 04 January 2010 21:32

heatbank in an attached barn with attached mechanical temp gauge
mounted in/on it.

Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"
- temp range say abt 30 to 90 deg c
- wired is fine tho if cheap wireless acceptable :)
- (don't fancy the car type umbilical even if accurate....

cheers
JimK

Oregon temp/weather gadget with an extra remote sender. I have one - the
remote sender doesn't have a great range, but is better with clear line of
sight. Does do Min/Max which may be helpful.

There's probably better stuff...

Some RS232 gadget with a temp sensor (can give you hints if that's of any
interest). RS232 travels quite well at low bit rates (2400 will do 100's of
yards. Jack into PC in house.

?

--
Tim Watts

This space intentionally left blank...

remote thermometer ideas?
 

On Mon, 4 Jan 2010 13:32:34 -0800 (PST), JimK wrote:

Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"

Plenty of wireless thermometers about but they are generally
enviromental so might not go up to 90C.

One wire sensors are cheap and easy to use, have few and a cheap PC
and log what your heatbank is doing. Inputs outputs etc.

--
Cheers
Dave.

remote thermometer ideas?
 

On Jan 4, 11:07 pm, "Dave Liquorice"
wrote:
On Mon, 4 Jan 2010 13:32:34 -0800 (PST), JimK wrote:
Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"

Plenty of wireless thermometers about but they are generally
enviromental so might not go up to 90C.

One wire sensors are cheap and easy to use, have few and a cheap PC
and log what your heatbank is doing. Inputs outputs etc.

--
Cheers
Dave.

I had a trawl on fleabay and these for e.g. :- itemno 260531949471
look ideal - except I would need to extend the cable to abt 5m - any
comments on whether that would work or would extending cable by 500%
bring other snags into play?

Cheers
JimK

remote thermometer ideas?
 

JimK
wibbled on Tuesday 05 January 2010 11:25

On Jan 4, 11:07 pm, "Dave Liquorice"
wrote:
On Mon, 4 Jan 2010 13:32:34 -0800 (PST), JimK wrote:
Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"

Plenty of wireless thermometers about but they are generally
enviromental so might not go up to 90C.

One wire sensors are cheap and easy to use, have few and a cheap PC
and log what your heatbank is doing. Inputs outputs etc.

--
Cheers
Dave.

I had a trawl on fleabay and these for e.g. :- itemno 260531949471
look ideal - except I would need to extend the cable to abt 5m - any
comments on whether that would work or would extending cable by 500%
bring other snags into play?

Cheers
JimK

Can't be absolutely sure - that could be an analogue sender in which case
dodgy long wires may throw the reading out but it will still generally work,
or it could be digital (eg 1-wire) and not read at all if it gets unhappy,
though 1-wire specifically will easily do 5m - it can do a lot more with
decent cable.

However, for 5m, I really don't see a problem. I would deploy some screened
twisted pair cable (eg mic cable, STP network cable or any reasonable stuff
you can get your hands on). Then suck it and see. Do a calibration check
against a known thermometer and if it gets wibbly, try earthing the screen
at one end or the other.

--
Tim Watts

This space intentionally left blank...

remote thermometer ideas?
 

On Jan 5, 12:49 pm, Tim W wrote:
JimK
wibbled on Tuesday 05 January 2010 11:25



On Jan 4, 11:07 pm, "Dave Liquorice"
wrote:
On Mon, 4 Jan 2010 13:32:34 -0800 (PST), JimK wrote:
Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"

Plenty of wireless thermometers about but they are generally
enviromental so might not go up to 90C.

One wire sensors are cheap and easy to use, have few and a cheap PC
and log what your heatbank is doing. Inputs outputs etc.

--
Cheers
Dave.

I had a trawl on fleabay and these for e.g. :- itemno 260531949471
look ideal - except I would need to extend the cable to abt 5m - any
comments on whether that would work or would extending cable by 500%
bring other snags into play?

Cheers
JimK

Can't be absolutely sure - that could be an analogue sender in which case
dodgy long wires may throw the reading out but it will still generally work,
or it could be digital (eg 1-wire) and not read at all if it gets unhappy,
though 1-wire specifically will easily do 5m - it can do a lot more with
decent cable.

However, for 5m, I really don't see a problem. I would deploy some screened
twisted pair cable (eg mic cable, STP network cable or any reasonable stuff
you can get your hands on). Then suck it and see. Do a calibration check
against a known thermometer and if it gets wibbly, try earthing the screen
at one end or the other.

--
Tim Watts

This space intentionally left blank...

cheers for the thoughts Tim - when the weather improves I'll order one
and have a play - especially at that price!

The cable appears to be twin so I'll see what happens and report
back.

4 inches of snow by lunch today!!

Cheers
JimK