Emerson Rosemount 700XA, Reference Manual

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Figure 4-10: Sample stream inlets and calibration gas inlet
A. Sample stream inlets
B. Calibration gas inlet
4. Connect sample gas stream(s) to the GC.
• Use ⅛ -in stainless steel tubing, as appropriate, to connect sample gas.
• Unless stated otherwise in the product documentation, ensure that the pressure
of the calibration and sample line is regulated at 15 psig (1.03 barg) to 20 psig
(1.38 barg).
Postrequisites
After all lines have been installed, proceed with leak-checking the carrier and sample lines.
4.4.4 Maximum effective distance by communication
protocol type
Table 4-1 lists the maximum distance at which the indicated protocol can transmit data
without losing effectiveness. If you need longer runs, use a repeater or other type of
extender to maintain the protocol's efficiency.
Table 4-1: Maximum distance for each communication protocol
Communication protocol Maximum distance
RS-232 50 ft (15 m)
RS-422/RS-485 4,000 ft (1,219 m)
Installation and start-up Reference Manual
June 2022 2-3-9000-744
62 Emerson.com/Rosemount