Kassiopeija
Well-Known Member
and your calibration number is?
Vpd. Leaf temp, 10° lower then room temps?
- Thread starter Michigangrows2
- Start date
Billy the Mountain
Well-Known Member
No, 37 is for internal temp.
Skin temp is ~32-33 iirc
Star Dog
Well-Known Member
37c on my forehead and 38c under my top.
Billy the Mountain
Well-Known Member
You have a fever or an inaccurate meter
Core temp is ~ 5c warmer than skin temp
ski
Core temp is ~ 5c warmer than skin temp
ski
Star Dog
Well-Known Member
Where did you find that?
What Is Normal Body Temperature?
Your body produces heat all the time. Do you know what your temperature should be? Find out what’s too high, too low, and (pretty much) just right.
www.webmd.com
Kassiopeija
Well-Known Member
lol what are you doing you cannot calibrate like this, different materials reflect IR differently
Kassiopeija
Well-Known Member
Determining the Leaf Emissivity of Three Crops by Infrared Thermometry
Plant temperature can provide important physiological information for crop management. Non-contact measurement with an infrared thermometer is useful for detecting leaf temperatures. In this study, a novel technique was developed to measure leaf emissivity using an infrared thermometer with an...
www.mdpi.com
Billy the Mountain
Well-Known Member
We're not talking about body temp, we're talking about skin temp
Do the same search using skin temp
You'll find something like this:
"The normal temperature of skin is about 33 °C or 91 °F."
*Edit: the illustration came from here:
biology.stackexchange.com
Do the same search using skin temp
You'll find something like this:
"The normal temperature of skin is about 33 °C or 91 °F."
*Edit: the illustration came from here:
How to convert skin temperature to core temperature?
As opposed to regular invasive thermometers, there are non-invasive IR thermometers to measure the temperature. For example Thermofocus. I read in many sources that these IR thermometers only meas...
Last edited:
Billy the Mountain
Well-Known Member
Perhaps yours is a "medical" IR gun?
They're exactly the same but have the offset built in for taking skin temps from forehead and displaying the corresponding core temp. That would certainly account for your results.
They're exactly the same but have the offset built in for taking skin temps from forehead and displaying the corresponding core temp. That would certainly account for your results.
Michigangrows2
Member
Calibrate? The Infared gun? Its the general brand posted above identical. Is it junk?
Michigangrows2
Member
Its the general brand posted above on a ebay link. I have a handheld skin one also..however it only reads 87-120°
Billy the Mountain
Well-Known Member
I was responding to stardog regarding his 37c skin temp results
You still need to measure a leaf and another object in the same environment, with the same IR gun to determine an accurate offset
Emissivity on the meter should be ~.98 for leaves
Other materials vary, but many non-reflective surfaces are fairly close
Kassiopeija
Well-Known Member
that's mine
the EMS need to be set to 0.98 for plant leaves
each material has a different co-factor
if that's not right the calculation is being done wrong
you cannot calibrate reading out leaves with your skin or whatever
that's why I been posting the study before to show the EMS of 0.98
Michigangrows2
Member
So the general brand i own does not have have any ems settings ..so in other words its not gona give me any accuracy in ur opinion
Michigangrows2
Member
The one i own here fixed ems @.95
Attachments
xtsho
Well-Known Member
Damn crazy stuff going on to grow some cannabis.
My routine:
Put plants in tent under light. Supply irrigation/fertilization. Wait for flowers to form and harvest when done. Dry and smoke.
I might be old school but I can grow some dank without all this reliance on meters and and warp drive modulators.
As you were.
My routine:
Put plants in tent under light. Supply irrigation/fertilization. Wait for flowers to form and harvest when done. Dry and smoke.
I might be old school but I can grow some dank without all this reliance on meters and and warp drive modulators.
As you were.
Kassiopeija
Well-Known Member
it's not much off tbh
Michigangrows2
Member
When growing mini trees every tid bit helps lol. Pulling almost 9lb off 4 lights in a 11x13 room blows quite afew seasoned growers i know right outa the water!Damn crazy stuff going on to grow some cannabis.
My routine:
Put plants in tent under light. Supply irrigation/fertilization. Wait for flowers to form and harvest when done. Dry and smoke.
I might be old school but I can grow some dank without all this reliance on meters and and warp drive modulators.
As you were.
Attachments
Billy the Mountain
Well-Known Member
Your plants look great but 28g/ft^2 isn't anything to be boastful about.
Michigangrows2
Member
Opinions shminons first ever grow...and pulled that much 2.2lb a light with no experience. Id have to be pretty boastful for a guy that doesnt own a warehouse or some huge op. Or employ a few bodies. Lol