Greenhouse Thermometer Recommendations and Location in the Greenhouse.

[TrysHard]

Greenhouse Thermometer Recommendations and Location in the Greenhouse.

Have purchased 2 Greenhouse Thermometers over the last 2 years a digital one, parts of the LCD failed within a year and a old fashioned analogue type which is not very accurate (different readings between the max min sides) I am considering a dial type like these any comments.

BRANNAN GILT DIAL MAX MIN THERMOMETER HYGROMETER GARDEN GREENHOUSE (12/413/3) | eBay

or

DIAL MAX MIN THERMOMETER GREENHOUSE GARDEN CONSERVATORY - BRANNAN (12/450/3) | eBay

Also where in the greenhouse do you put yours?

[Kristen]

Dunno about others, but I don't find simple Max/Min enough info. Knowing that the temperature fell to X doesn't tell me how long it was cold, how much the heater fluctuated (the nearer to target temperature it maintains / the less "overrun" there is, the cheaper it is to run)

So I use a sensor that transmits the temperature to the house / my PC and records it continuously. I can then look at a graph

I can also check what temperature the greenhouse is, this time of year, and decide when to trot over there to open it up / close it in the afternoon.

If the greenhouse is too far from the house / on an allotment, then there are logging thermometers which allow the data to be downloaded (plug into USB / similar).

[Martin H]

Same as Kristen.

I use kit made by Corintech. It's not cheap though.

Here's what happened in the greenhouse last night:

[Kristen]

BBC Click had an episode on electronic gardening monitoring gadgets (and things like robotic insects which could pollinate plants in the future). "Click" is all a bit off-stage-left for me ... but perhaps some things of interest.

BBC News Channel - Click, 04/04/2015

Parrot Flower Power sensor (push it in the ground) measures:

"Capacitive sensor for soil humidity
Conductive sensor for the fertiliser content of the soil
Light sensor (which can also act as a warning light)
Soil and air temperature sensor"

transmits to your phone by Bluetooth when you are nearby.

£50 (£35.50 each for 2+)
Flower Power - Store Parrot

Marketing video:

Also Koubachi garden sensor which looks more robust / sophisticated (says MIN operating temperature 0C though which would be worrying ...)

£94
http://www.koubachi.com/products/outdoor/