Honeywell SPM - Page 35

SPM Single Point Monitor
SPM Technical Handbook
4-12
Target Gas
Maximum Sample Line
Filter
Type A
Filter
Type B
Filter
Type C
Standard SPM
SPM with Extended
Sample Option
Hydrogen Sulde
3 meters (10 ft) 30 meters (100 ft)
X
Hydrogen Sulde-dry X
Hydrogen Sulde (low) X
Nitrogen Dioxide X X
Ozone no lter
Phosgene X
Sulfur Dioxide** X X
Fluorine
3 meters (10 ft) 6 meters (20 ft)
X X
Fluorine-Low Level X X
Boron Triuoride X X
The Teflon-membrane particulate filter assembly, P/N 1830-0055 requires replacing this filter’s membrane, P/N
0235-1072 every 30 days.
* Hydrogen Bromide and Hydrogen Iodide are very water soluble. A high relative humidity (RH) will cause
sample loss due to absorption onto the sample lines. For these gases, use the table below as a guide to
determine the maximum sample length.
** Listing for current SO
2
- ppm calibration is the same for SO
2
- ppb calibration
Note:
When monitoring for gases using low-level calibrations, additional sample line restrictions may apply. Consult
Honeywell Analytics.
Caution
Acid scrubbing lters (P/N 710235) are not to be used with SPM sample lines.
Gas
RH of
Sample
Maximum Sample Length
(with extended sample
option)
Hydrogen Bromide
or
Hydrogen Iodide
<40% 100 ft. (30 m)
40-60% 20 ft. (6 m)