Ulvac PBL Series, Инструкция по эксплуатации

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2. Product Overview
The exhaust principles of the oil diffusion vacuum pump are as follows.
Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat
down into the bottom of the pump and out the exhaust.
The diffusion ejector pumps are designed to operate with the ULVOIL B-6 diffusion ejector
pump oil. It is metal pump and make up the pump body, jets, heater and baffle.
2.1 Features
6 models are available PBL-02, PBL-04, PBL-06, PBL-10, PBL-14, PBL-20. This series has
maximum pumping speed at 10 -1 Pa range, where pumping speed of oil rotary pump or
mechanical booster pump decreases.
2.2 Performance Curves
Fig 7. Performance curves
Performance curves
ULVOIL B-6
with cooling baffle
Pressure (Pa)
P
u
m
p
in
g
s
p
e
ed
(
L
/s
)