20
USER GUIDE
ENTEGRIS, INC.
INVUE INTEGRATED FLOW CONTROLLERS, MODELS NT6510, NT6520
Unit Operation
Operating Environment
Storage Temperature Range
The flow controller can withstand
storage temperatures between
-15°C – 40°C (5°F –104°F) with no
permanent effect on the perfor-
mance of the device.
Operating Ambient
Temperature Range
The flow controller is designed to
operate in ambient temperature,
cleanroom environments. It is speci-
fied to operate at temperatures of
10°C–65°C (50°F–149°F). For opera-
tion above 65°C (149°F), contact
Entegris. The unit must be re-zeroed
at operating ambient temperature
conditions and after any temperature
change for the accuracy specifica-
tions to apply. See the
Maintenance
Section
on page 27 for re-zeroing
instructions.
Operating Process
Temperature Range
The flow controller is designed to
have a range of acceptable process
temperatures of 10°C –65°C (50°F –
149°F). When the process fluid is
above ambient temperatures of 23°C
(73°F), the system will experience
slight accuracy errors due to instru-
ment warm-up and changes in
viscosity and specific gravity of the
liquid. The unit must be re-zeroed
at operating process temperature
conditions and after any temperature
change for the accuracy specifica-
tions to apply. See the
Maintenance
Section
on page 27 for re-zeroing
instructions. The P8 (PFA) code
sensor interface is recom mended for
process temperatures higher than
40°C (104°F). For operation above
65°C (149°F), contact Entegris.
Positive system fluid pressure must
be maintained at all times at
elevated temperatures.
Effects of Fluid Viscosity and
Specific Gravity
The flow controller has been factory
calibrated using deionized water.
Fluids with viscosities and/or
spec ific gravity different from the
calibration fluid (water) will cause
slight accuracy errors. Correction
factors for viscosity and specific
gravity changes may be obtained
from Entegris by visiting our website
at:
www.entegrisfluidhandling.com
and following the Sensing and
Control product links.
Unit Enclosure
The standard InVue Integrated Flow
Controller cover is factory sealed
and should not be tampered with or
opened. Spray-down or temporary
immersion will not compromise the
performance of the unit.
NOTE:
Any attempt to remove,
tamper with or open the flow con
troller cover will void the warranty.
Содержание InVue NT6510
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