5
Also, if you are using very loose or odd shaped vessels, the calibration
function can help you match the display temperature to your actual sample
temperature.
To calibrate the unit for a given block or sample, first turn the unit off using
the On/Off switch. Then place a thermometer of known accuracy* into
the block thermometer hole or a thermocouple or other sensor into your
sample. Make sure there is a good fit between the thermometer and the
block or good contact between any sensor and sample or sensor and block.
To calibrate the block or sample to the display:
1. Press and hold the Start/Stop key, then simultaneously power up the
unit with the On/Off switch.
2. You should hear a “DU-DU-DU” sound from the dry bath and the
display will have one segment flashing on the left and will show a set
temperature, and the right will show adjt.
3. Use the Temperature Up and Down arrow keys to set the desired
temperature at which you want to calibrate the unit. Then press the
Start
key.
4. Allow a minimum of 10 minutes (maximum 20 minutes) for the unit to
heat up to your set temperature and to equilibrate at this temperature.
The entire LED display will start flashing when equilibration is reached.
5. After the entire display has started flashing, read the thermometer (or
sensor meter) and use the Up and Down arrow keys to adjust the display
to the thermometer or sensor reading. Then press the Start/Stop key.
6. The unit will then begin to automatically adjust its operating temp-
erature to your original set point with the recalibration factor included.
Allow sufficient time for the unit to re-equilibrate, then compare the
thermometer or sensor reading to the calibrated display again. They
should closely match. If not, repeat the calibration procedure.
7.0 USB Interface
Corning® LSE™ Digital Dry Bath Heaters have a USB unidirectional data port.
A cable and software are available which allow a user to use a desktop or
laptop computer to record and/or print a record of the temperature profile
produced by the dry bath.
*Thermometers used for calibration purposes should have a written calibration certificate
and be traceable back to NIST or other certified body. General lab thermometers are often
not accurate enough for calibration work.
