Emerson Rosemount 700XA Reference Manual page 62

Installation and start-up
June 2022
4. Connect sample gas stream(s) to the GC.
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
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
RS-232
RS-422/RS-485
62
Figure 4-10: Sample stream inlets and calibration gas inlet
A. Sample stream inlets
B. Calibration gas inlet
• 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).
lists the maximum distance at which the indicated protocol can transmit data
Maximum distance
50 ft (15 m)
4,000 ft (1,219 m)
Reference Manual
2-3-9000-744
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