FOT Lab Kit User’s Manual A-5
After an "E" error, the FOT instrument will disable the channel with
the error. To re-enable the channel, the user needs to disable the
calibration with the command CC=D and then reselect the disabled
channel and restart the calibration.
11. If all four channels are reading correctly, then save the setting
with the following command <ESC> SV ENTER.
Multi-Temperature
Calibration
If required, each channel of the instrument can be calibrated at a
different temperature to achieve the highest accuracy over separate
temperature ranges. The instructions below show how to calibrate
a four-channel instrument with Channels 1 and 2 calibrated at 60
o
C
and Channels 3 and 4 calibrated at 100
o
C.
1. Connect the extensions and probes to the appropriate
channels.
2. Insert the probe or probes into the stable temperature bath,
verified by a reliable, independent temperature measurement
device.
3. Connect the instrument to the computer and start the
appropriate software.
4. Power up the instrument.
5. Set the temperature units using the command <ESC> UN =
“units” ENTER, where “units” is Celsius, Kelvin, or Fahrenheit.
Depending on your FOT instrument, some of these units will
not be available.
6. Disable channels 3 and 4 and enable channels 1 and 2 with the
command <ESC> PS=1,2 ENTER.
7. After channels 3 and 4 are disabled, you can calibrate channel 1
and 2 at 60
o
C with the command <ESC> CT=60 ENTER.
8. Then, disable the calibration <ESC> CC=D ENTER.
9. Place the probes attached to channels 1 and 2 in the 60
o
C
temperature bath and wait until the temperature is stable (5 to
15 minutes).
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