MSA Senscient ELDS 1000 series, Operating Manual

Page: 132 / 184

Specifications
132
Senscient ELDS™
Rev 15
GB
8. Specifications
8.1. System
Gases & Ranges
For Methane, the following LFL concentrations are assumed. Units are appropriately calibrated in
the factory depending on the required certification.
Certification %v/v for 1LFL
ATEX, IECEx, GOST-R, GOST-K, InMetro 4.4
CSA(UL) 5.0
Gases, Ranges & Path Lengths
ELDS Receiver units contain two 4-20mA current loops that are used to signal gas levels.
For dual gas units each loop is used for an individual gas, however for single gas units the
second output loop will provide an alternative measurement of the gas measurement; and
this may be of a different full scale to the primary output. Details of this are contained in the
following table. A full specification of the different ranges for each output is provided for
each ELDS part number in Appendix H.
Gas Open Path Ranges Available Path Lengths
Methane (CH
4
) 0-1 / 0-1 LFL.m,
0-5 / 0-1 LFL.m
0-1,000ppm.m / 0-1 LFL.m
5-40m, 40-120m, 120-200m
Methane (CH
4
) &
Hydrogen Sulphide (H
2
S)
0-1 LFL.m (CH
4
)
0-250 ppm.m (H
2
S)
0-500 ppm.m (H
2
S)
0-1,000 ppm.m (H
2
S)
0-15,000 ppm.m (H
2
S)
5-60m
Hydrogen Sulphide (H
2
S) 0-250 / 0-500 ppm.m
0-500 / 0-1000 ppm.m
0-1,000 / 0-5000 ppm.m
0-1,500 / 0-5000 ppm.m
0-5,000 / 0-10,000 ppm.m
0-15,000 / 0-500 ppm.m
5-60m
Hydrogen Fluoride (HF) 0-25 / 0-100 ppm.m
(Only 5-60m Path Length)
0-50 / 0-100 ppm.m
0-200 / 0-100 ppm.m
0-1,000 / 0-500 ppm.m
5-60m, 60-120m
Ammonia (NH3) 0-1,000 / 0-500 ppm.m
0-5000 / 0-1000 ppm.m 5-40m, 40-120m
Hydrogen Chloride (HCl) 0-50 / 0-100 ppm.m 5-60m
Carbon Dioxide (CO
2
) 0-300,000 / 0-100,000 ppm.m 5-40m, 40-120m
Ethylene (C
2
H
4
) 0-1 / 0-1 LFL.m,
0-10,000ppm.m / 0-1LFL.m 5-40m, 40-120m, 120-200m