Spectrex Xenon 700 SIL Open-Path Gas Detection System - Manual (Page 21)

TM 799200 Rev (C), January 2014
Models and Types 9
2.5 Models and Types
Series 700S offers 2 families of detected gases:
 Models 701S, 702S and 703S used for methane, LPG and gases mixture
for most offshore and onshore applications.
 Models 721S, 722S and 723S used for ethylene only.
Table 3 describes the installation distances for each of the Series 700S
models.
Table 3: Model Numbers and Installation Distances
Model
No.
Detector Source
Min.
Installation
Distance
Max.
Installation
Distance
701S XDSS-C-111XX XSS-C-11X 13 ft. (4 m) 65 ft. (20 m)
702S XDSS-C-112XX XSS-C-11X 50 ft. (15 m) 230 ft. (70 m)
703S XDSS-C-113XX XSS-C-12X 165 ft. (50 m) 459 ft. (140m)
721S XDSS-C-121XX XSS-C-11X 13 ft. (4 m) 65 ft. (20 m)
722S XDSS-C-122XX XSS-C-11X 50 ft. (15 m) 230 ft. (70 m)
723S XDSS-C-123XX XSS-C-12X 165 ft. (50 m) 459 ft. (140m)
The 700S Series has 3 wiring options:
 Option 1: Power, Alarm Relay, Fault Relays, 0-20mA
 Option 2: Power, Alarm Relays, Fault Relays, Accessory Relay
 Option 3: Power, Alarm Relay, RS-485, 0-20mA, RS-485 RTN (default)
Note: SIL2 covers only 0-20mA outputs.
The wiring option must be set at the factory; cannot be changed at
customer facility.