Techne DB-2TC - Manual (Page 28)

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SETTING THE OPERATING TEMPERATURE
1. To display the set temperature on the digital display, press and hold the set temperature button.
To adjust the set temperature, press the set temperature button and hold it while pressing the up or
down buttons. When the set temperature button is released, the measured temperature is displayed
(in degrees Celsius).
2. The heater (and heater indicator) comes on if the set temperature is higher than the current block
temperature.
3. When the measured temperature approaches the set temperature, the heater indicator will begin to
flash. As the measured temperature stabilises the indicator will stay on for shorter periods.
4. Due to variations in heat losses with different designs of insert block, the actual temperature may vary.
The units are calibrated using model F3506 insert blocks. If you need to control the temperature to a
greater accuracy than the instrument’s set point, place a thermometer in a designated hole in one of
the blocks. For greater accuracy still, you can place the thermometer in the sample liquid in one of the
test tubes. In either of these cases, it may be necessary to readjust the set temperature to achieve the
precise temperature required. Allow the temperature of the unit to stabilise after each adjustment.
5. There will be a time lag between the heater plate and the insert block achieving the set temperature
due to thermal contact between them. This is particularly true of the DB-3D where the display may
reach temperature in 2 or 3 minutes while the insert block may take 12 minutes or more to reach
temperature. The guide times are shown in the specifications.