Thermo Scientific 42i Instruction Manual page 215

Pressure Transducer
Assembly Replacement
Thermo Fisher Scientific
Equipment Required:
DC voltage source (greater than 0 volts and less than 10 volts)
1. Connect the known DC voltage source to the input channel (1-8) to be
calibrated. Figure 7–15
identifies the associated channels.
2. From the Main Menu, press
to scroll to Analog Input Calibration, and press
The Analog Input Cal screen displays input channels 1-8.
3. At the Analog Input Cal screen, press
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 calibrate the input voltage for the selected channel to the
source voltage.
6. Press >
Steps 3-5 to calibrate other input channels to the source voltage as
necessary.
Use the following procedure to replace the pressure transducer assembly
(Figure 7–16).
Equipment Required:
Pressure transducer assembly
Philips screwdriver
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
Pressure Transducer Assembly Replacement
shows the analog output pins and
to scroll to Service, press
.
to enter the source voltage, and press
to return to the input channels display and repeat
Servicing
Table 7–5
.
to scroll to the channel
.
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Model 42i Instruction Manual
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