MKS 1579A, Инструкция по эксплуатации

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Chapter 4: Operation 1579A/579A
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Power Supply / Readout Units of other Manufacturers
Should you use power supplies / readout units of manufacturers other than MKS then make sure
that these units fulfil the electrical specifications for use with the mass flow controllers/meters as
described herein. Refer to
Appendix A, Product Specifications .
Non MKS Cables
Requirements
Should you choose to manufacture your own cables, follow the guidelines listed below:
1. The cable must have a braided shield, covering all wires. Neither aluminium foil nor
spiral shielding will be as effective: using either may nullify regulatory compliance.
2. The connectors must have a metal case which has direct contact to the cable’s shield on
the whole circumference of the cable.
3. With very few exceptions, the connector(s) must make good contact (typical 0,01
Ω
or less)
to the device’s case (ground). The case also must be properly grounded.
4. When selecting the cable, consider:
a) The voltage ratings.
b) The cumulative I
2
R heating of all the conductors (keep them safely cool).
c) The IR drops of the conductors, so that adequate power or signal voltage gets to the
device.
d) The capacitance and inductance of cables which are handling fast signals
e) If there are specific requirements when supply units etc of other manufacturers are
used
Finishing the Installation
1. Check all fittings and flanges for leaks.
Do not proceed with the next step until you have not made sure that there are no leaks.
2. Connect the interface cable(s) to the mass flow controller.
Connect the other end of the cable to the power supply/control electronics.
Check all electrical connections.
This ends the mass flow controller’s and mass flow meter’s installation.