Abbreviations - Honeywell Searchline Excel Technical Handbook

MAN0530 Issue 10 - 11/09
2104M0506
APPENDIX B - GLOSSARY
An open path alarm set at 1 LEL.m would be triggered by any of the situations shown below:
LEL.m monitoring is particularly beneficial while the Excel gas detector is protecting the perimeter
of a plant or process, often reducing the quantity of point detectors required. The open path
LEL.m system has the ability to detect leaks that point detectors may miss due to prevailing
or changing wind directions, and can provide early warning of a dilute gas cloud when point
detectors may not register any gas presence.
B.3 ABBREVIATIONS
ATEX
CSA
DSP
EMC
IAA
IECEx
IP
IR
IS
FM
LEL
LR
MR
NPT
RFI
SHC
SR
UL
100% 50%
LEL LEL
1m 2m
European Hazadous Area Approval
Canadian Standards Association
Digital Signal Processor
Electro-Magnetic Compatibility
Instrument Assisted Alignment
International Hazadous Area Approval
Ingress Protection
Infrared
Intrinsically Safe
Factory Mutual
Lower Explosive Limit
Long Range
Medium Range
National Pipe Thread
Radio Frequency Interference
Sieger Handheld Calibrator
Short Range
Underwriters Laboratories
10%LEL
10m
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