TSI Instruments 3772 - Internal Components of the Model 3772;3771 CPC; Internal Instrument Components; Water Removal Pump

3-8 Model 3772/3771 Condensation Particle Counter
Intern a l I nstrum e n t Compone n ts
Internal components are described in this section and identified in
Figure 3-6 and Figure 3-7.
1. Sensor assembly
5. Critical orifice
2. Water removal pump
6. Pressure transducers
3. Butanol fill filter
7. Power supply
4. Fan
Figure 3-6
Internal Components of the Model 3772/3771 CPC
Water Removal Pump
The Model 3772/3771 CPC uses a micro-flow Water Removal Pump to
remove condensate from the condenser. The Water Removal Pump draws
condensed butanol and water from the condensate collection reservoir.
Water removal prevents contamination of the butanol during operation in a
high humidity environment. When activated, the pump runs continuously. A
drain bottle must be connected for water removal to occur. For information
on operating the water removal pump refer to Chapter 4, “User Settings.”