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Topic: Looking for these sensors (Read 1 time) previous topic - next topic

smoothisfast

I'm looking for sensors like the ones on my Kestrel. I think the white one is humidity and the wire behind it is temperature. These are water resistance if not water proof.

Help me find these sensors.

robtillaart


Have you contacted the firm that makes Kestrel ?    (don't know what the thing is you showed...:)
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

smoothisfast

it is a picture of as Kestrel Pocket Weather Meter, a handheld weather station.


I did not call them about it since I want to make my own using an Arduino.

MarkT

If the humidity sensor is weatherproof its likely to be a standard capacitance based humidity sensor with a gas-permeable protective cover... The temp sensor is likely a thermistor.
[ I won't respond to messages, use the forum please ]

smoothisfast

Mark, do you have any links to the "standard capacitance based humidity sensor with a gas-permeable protective cover"


I want both sensors.


The temp sensor does look like a thermistor

The humidity sensor from sparkfun are not waterproof.


terryking228

Hi,

I have some How-To in temp-humidity here:
http://arduino-info.wikispaces.com/TemperatureHumidity

Not sure what a "waterproof" humidity sensor would be!

Enclosing the sensor in Tyvek or Tent material or other waterproof but permeable bag might work for an outdoor- compatible sensor.   But most outdoor weather sensors simply have a rainproof enclosure..

Regards,
Terry King
terry@yourduino.com
Regards, Terry King terry@yourduino.com  - Check great prices, devices and Arduino-related boards at http://YourDuino.com
HOW-TO: http://ArduinoInfo.Info

MarkT

The HIH-5030 has a covered, condensation-proof version the HIH-5031, for instance.  I've definitely read about sensors with optional cover.

Its easy to make a liquid-proof gas sensor - that's what a gas-permeable membrane is for (Goretex for instance) - just a membrane with nano-scale holes in it (surface tension makes it impossible for liquid to squeeze through the holes except at extreme pressures).  Gas molecules sail through the holes...
[ I won't respond to messages, use the forum please ]

smoothisfast

Good information, thank you

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