Thermo Scientific 3881, Руководство по эксплуатации и техническому обслуживанию

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Calibrate the temperature probes every three months using a calibrated
thermometer (calibrated and traceable to the National Bureau of
Standards).
Place the thermometer inside the upper chamber temperature bottle next
to the Performance Monitor probe.
Allow the temperatures to stabilize.
From the Temp 1 screen, press the right
button and then the Scroll button. The
display will change as illustrated in
Figure 3-7.
Compare the temperature on the
monitor display with the temperature
shown by the thermometer. Using the
Up and Down buttons, match the temperature on the display screen with
that shown by the thermometer. Press Enter to store into memory.
The same procedures apply when calibrating the lower chamber
temperature. Pressing the Scroll button, the display is advanced to Temp 2.
Press Up or Down to change the temperature, then Enter.
Pressing the Scroll button after calibrating either probe advances the
display to Alarm Test.
From the High Alarm Test? Screen, pressing Yes will advance the
temperature display to an upper test limit. When reached, the alarm will
sound and the Overtemperature light will flash. Pressing the center button
below the display silences the alarm. The alarm does not ring back during
alarm test. The ring back is for normal operations only.
Pressing Scroll, the flashing light will stop and the display will advance to
the Low Alarm Test? screen. As in the high temperature alarm test,
pressing Yes will cause the display to step downward. The alarm will sound
and the Undertemperature light will flash. Pressing the center button
below the LCD will silence the alarm. Pressing Scroll will extinguish the
flashing light and return the display to the Temp 1 screen.
3-6 7033881 Blood Bank Thermo Scientific
Section 3
Operation
Calibrating the Temp
Probes
Figure 3-7. Temperature Calibration
Overtemp/Undertemp
Alarm Test