4-1
CHAPTER 4
Instrument Operation
This chapter describes the basic operation of the Model 3775
Condensation Particle Counter (CPC) and provides information on
the use of controls, indicators, and connectors found on the front
and back panels.
Operating Precautions
Read the following before applying power to the 3775 CPC:
Review the operating specifications for the CPC in
Appendix A.
Do not operate the CPC outside the range of 10 to 35
°C. If the
CPC is operated outside this range, the displayed concentration
may be inaccurate.
If the CPC reservoir contains butanol, be very careful when
moving the CPC. Refer to “
Moving and Shipping the CPC” for
more details.
WARNING
Although the CPC is appropriate for monitoring inert process gases such as
nitrogen or argon, it should not be used with hazardous gases such as hydrogen
or oxygen. Using the CPC with hazardous gases may cause injury to personnel
and damage to equipment.
Power Switch
The power switch is found on the back panel of the CPC. The switch
is combined with the power cord receptacle.
Control Knob and LCD Display
The 3775 CPC measurement data is presented on a 3.5” × 4.5”
quarter VGA color LCD display. Instrument functions are accessed
on the display using the rotate/select control knob. The display and
control knob are shown in
Figure 4-1 below.
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