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Moisture Sensor

Moisture Sensor

Moisture Sensor

(OP)
Anyone have any idea how to design a moisture sensing circuit or can lead me to an existing product.
Thanks,

RE: Moisture Sensor

Suggestion:
Contact some of the following manufacturers and ask for an application engineer:
1.
NDC Infrared Engineering
626-960-3300
2.
Davis Instruments, LLC
800-548-9409
3.
Soilmoisture Equipment Corp.
888-964-0040
4.
Dryning Technology
409-385-6422
5.
AgriChem, Inc.
612-434-6755
6.
Scale-Tron, Inc.
800-632-7083
The application will determine the selection of sensor and the selected sensor its accessories including the circuitry.

RE: Moisture Sensor

(OP)
Thanks Bartos for the info.

Mark

RE: Moisture Sensor

For the sensor head try browsing on Microsyst MS8005 RH sensor and also available w/ circuit from National Semiconductor Application sheet. Good luck!

RE: Moisture Sensor

What is the range of humidity or dew point are you looking for? This makes a difference in the sensor technology.

RE: Moisture Sensor

I designed a circuit that runs off 24vdc, operates a solenoid, and senses soil moisture content. Wanta talk? Uses a Nat Semi chip...

RE: Moisture Sensor

Firstly you need to know the application, and any special conditions, whether you require a submersible, contact type, a Infra-red or Microwave (non-contact) type, etc...etc..

It often helps, if you describe all the details firstly and then ask questions.

my interest in this was that I too am looking for a Non-contact Moisture sensor, But I have another cheaper idea, and would want to know views of some Electronic champs around here, as I am into automation, (but not an electronic Engineer), What I want is to meaure the moisture of Product, (Contact type) by measuring the Conductivity/Resistance, draw a table, and convert them in the PLC and give out the result, PLC is no problem for me, ButI am looking for someone who could guide/assist me how to construct this SUPER DOOPER capacity Sensor (You can take an example of the Multi meter set to Conductivity/Resistance, with super sensitivity.)
Would apprecite any help at iel@cyber.net.pk

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