Servicing
Ambient Temperature Calibration
Thermo Fisher Scientific
Model 410
i
Instruction Manual
7-35
3.
At the Analog Input Cal screen, press
to scroll to the channel
selected in Step 1, and press
.
4.
Press
to scroll to Calibrate Full-scale, and press
.
The screen displays the current input voltage for the selected channel.
5.
Use
and
to enter the source voltage, and press
to calibrate the input voltage for the selected channel connected
to the source voltage.
6.
Press
>
to return to the input channels display and repeat
Steps 3-5 to calibrate other input channels to the source voltage as
necessary.
Use the following procedure to calibrate the ambient internal temperature
for the instrument.
Equipment Required:
Calibrated thermometer or 10K ohm ±1% resistor
WARNING
The service procedures in this manual are restricted to qualified
service representatives.
▲
If the equipment is operated in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
▲
Equipment Damage
Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component.
▲
1.
Remove the instrument cover.
2.
Tape the thermometer to the thermistor, which is plugged into the
measurement interface board (
Figure 7–2
).
Note
Since the thermistors are interchangeable to an accuracy of ±0.2 °C,
and have a value of 10K ohms at 25 °C, an alternate procedure is to
connect an accurately known 10K resistor to the thermistor input (AMB
Ambient Temperature
Calibration
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