How about a simple minded way?
Have a mechanism that loads and empties small samples onto a
plate/strain gauge scale in a small leaky oven. Take an initial weight,
run the oven to 120C and see what the weight asymptoticly approaches.
The difference in weight is the definition of moisture conten
Microwave absorbtion treating a turn of the screw as the cavity?
The standard non-contact method for moisture in unknown soils is neutron
absorbtion, but this is expensive for most tasks.
I'd start with a humidity sensor with air being circulated through the
chips and through the sensor, given
>>
>> Or.. if you can meter a constant volume of material onto a "moving scale"
>> you might be able to tell by weight... within a given species of
>> wood.
>
>
>Well, you could try that method. One of the "battery" chips (DS2438, DS246X
>DS247X, DS278X) can measure voltage, current and temperature
On 8/10/07, Steve Lancaster <[EMAIL PROTECTED]> wrote:
>
> If you place two parallel wires in the trough surrounding the screw,
> parallel
> to the flight of the screw, such that you have a constant "volume" of
> chips over the sensor wires, then measure the conductivity you will have
> a rough ide
If you place two parallel wires in the trough surrounding the screw, parallel
to the flight of the screw, such that you have a constant "volume" of
chips over the sensor wires, then measure the conductivity you will have
a rough idea of moisture content... (This will work better if the screw
has a
Hi,
Thomas Berg:
> I´ve looked at thoose devices and as i see it the problem is the the
> woodchips are moving in the screw and would I get an acurate reading
> with the soilsenor and how long would it last in that enviroment?
Moisture sensors won't work. They're designed for wet soil or air (i
Hi,
I´ve looked at thoose devices and as i see it the problem is the the
woodchips are moving in the screw and would I get an acurate reading
with the soilsenor and how long would it last in that enviroment?
/Thomas
Mark Cheeseman skrev:
> Thomas Berg wrote:
>
>> I have a need to measure mo
Thomas Berg wrote:
> I have a need to measure moisture or wetness in woodchips as they are in
> a transportationscrew, do any one of you have any good ideas how to do
> this with 1-wire?
Hi Thomas,
Hobby Boards have some moisture sensors and 1-wire interfaces. They are
intended for measuring s
Hello,
I have a need to measure moisture or wetness in woodchips as they are in
a transportationscrew, do any one of you have any good ideas how to do
this with 1-wire?
Best regards,
Thomas
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