Chapter One: General Information
Operation of the MFC with Gases other than Air
17
The IE500A / IE1000A High Flow Rate Mass Flow Controller is calibrated with clean, filtered, dry air rated
to stringent ISO standards for compressed air systems. When running with air, humidity may have a minor
effect (usually < 1%) if the dew point is allowed to rise above 0 ºC in the flowing gas stream.
Control (I/O) Interfaces
The IE500A / IE1000A High Flow Rate Mass Flow Controller is available with either analog or 4-20 mA I/O
which is specified by the user at time of ordering.
Analog I/O is available via an industry standard 15 pin DSUB connector, which provides for setpoint I/O,
valve override, flow zero, and an optional feedback control input. Analog I/O pin functions are covered later
in this manual.
Cleanliness Features
The IE1000A High Flow Rate Mass Flow Controller uses elastomer o–rings available in Viton, BUNA-N,
neoprene, and EPDM for all external seals. The seals minimize gas permeation and ensure low external
leakage. Internal surfaces are precision machined and subjected to a proprietary cleaning process. The
instrument is assembled and packaged in a clean room environment.
Reliability
To enhance instrument reliability, the design minimizes mechanical and electronic components count and has
successfully passed the following tests:
High speed main flow diaphragm cycling
High speed main flow valve plug cycling with post-cycle wear examination
Storage temperature testing
Repetitive thermal cycle and thermal shock testing
Transportation package testing
HALT testing
Full unit accelerated life testing
CE testing including ESD and EFT
Vibration testing (random and sine sweep)
Humidity testing
IP66 Testing
STRIFE, including temperature cycling and vibration (sine and random tests)
And with a metal braided, shielded cable, properly grounded at both ends:
EMC Directive 89/336/EEC for CE Mark compliance
Содержание MKSINST IE1000A
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