I just purchased a digital thermometer for a darkroom photography class and I need to know if it is accurate before I begin mixing chemicals. There is no hex nut to adjust like a dial thermometer.
2006-09-10 17:16:18 · 4 answers · asked by fine.photographer 1 in Arts & Humanities ➔ Visual Arts ➔ Photography
I just purchased a digital thermometer for a darkroom photography class and I need to know if it is accurate before I begin mixing chemicals. There is no hex nut to adjust like on a dial thermometer and there was no instruction manual included.
2006-09-10 17:39:53 · update #1
Ice Point Method
Fill a large glass with crushed ice. Add clean tap water until the glass is full and stir well.
Put the thermometer stem or probe in the ice water mixture so that the entire sensing area is submerged. Do not let the stem of the thermometer or probe touch the sides or bottom of the glass. Wait at least 30 seconds or until indicator stops moving.
With the stem of the thermometer or probe still in the ice water mixture, use a wrench to turn the adjusting nut until the thermometer reads 32°F (0°C). If calibrating a digital thermometer, press the reset button to automatically calibrate the thermometer.
Boiling Point Method
Bring clean tap water to a boil in a deep pan.
Put the thermometer stem or probe into the boiling water so that the sensing area is completely submerged. Do not let the stem or probe touch the bottom or sides of the pan. Wait at least 30 seconds or until indicator stops moving.
With the thermometer stem or probe still in the water, use a wrench to turn the adjusting nut until the thermometer reads 212°F (100°C) at sea level. If calibrating a digital thermometer, press the reset button to automatically calibrate the thermometer.
2006-09-10 20:32:11 · answer #1 · answered by Ipshwitz 5 · 1⤊ 1⤋
This Site Might Help You.
RE:
How do I calibrate a digital thermometer?
I just purchased a digital thermometer for a darkroom photography class and I need to know if it is accurate before I begin mixing chemicals. There is no hex nut to adjust like a dial thermometer.
2015-08-05 22:24:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋
All thermometers DO NOT have a hex, and some don't even have a calibrate or reset button. These answers would be very useful, IF THEY WERE RELEVANT. Can you not read? It was stated that there is no hex bolt.
2014-06-19 13:59:57 · answer #3 · answered by Anonymous · 0⤊ 1⤋
all thermometers most have a adjustable screw make sure you
use ice and water in a glass cup it should read 32`F if the reading is 32 it should be good and not need any adjusting.
2006-09-10 17:36:05 · answer #4 · answered by Al S 1 · 0⤊ 1⤋
1
2017-02-10 21:17:08 · answer #5 · answered by ? 4 · 0⤊ 0⤋
use a mucury thermometer to compare temps then you can no if it is accurate
2006-09-10 17:24:26 · answer #6 · answered by Michael & Jennifer 1 · 0⤊ 0⤋
is there a manual that comes with it? model number, brand name? anything?
2006-09-10 17:22:22 · answer #7 · answered by Anonymous · 0⤊ 0⤋