Spectrex Xenon 700 SIL Open-Path Gas Detection System - Manual (Page 31)

TM 799200 Rev (C), January 2014
System Set Up 19
3.3.1 Detection Function Programming
The SafEye 700S series incorporates several functions that can be set by the
customer using:
 Handheld unit (P/N 799810). Refer to manual TM 799060 for
programming instructions. The connection of the handheld to the
detector is fast and intrinsically safe and allows function change with no
need to open the detector.
 To use the non I.S mini laptop Unit, refer to Manual TM 777070 for
instructions.
 Host software with harness USB RS-485 converter, refer to manual
TM 899050 for programming instructions.
3.3.2 Detection Set-Up Function
For the default settings see Default Detector Set up, page 21
3.3.2.1 Gas Calibration
Four gas types can be selected for maximum compatibility to the required
measured gas(es).
Gas Types for Models 701S, 702S, 703S:
 Methane
 Mixture 92% methane 4% ethane 4% propane (default)
 LPG – 60% Propane, 40% Butane
 Mixture 99% methane 1% propane
Gas Type for Models 721S, 722S, 723S:
 Ethylene 100%
These four calibrations are standard calibrations. The Detector can be
calibrated up to eight (8) different types of gases or mixtures upon special
request.
Each Detector will be supplied with a calibration sheet that will define the
calibrated gas set up, full-scale, alarm and warning level.
3.3.2.2 Full Scale
Two full scales are available:
Table 7: Sensitivity Levels Options
Sensitivity Full Scale Warning Level Alarm Level
Normal 5 LEL.m 1 LEL.m 3 LEL.m
High 2 LEL.m 0.4 LEL.m 1 LEL.m
When choosing a full scale, the warning and alarm level will change
automatically per the table.