MIP LM 3188, User Manual, Page: 5 / 41

Page 5 (41)
1.2 DIFFERENT LASER MODELS
There are currently several different laser dust monitors available from MIP.
Gas laser LM 3086, Semiconductor model LM 3188 and Superled model LX 3188.
The basic models are LM 3086 and LM 3188. Both models function with the same principle
measuring directly laser light extinction as optical density. Here is how they differ from each
other:
Model LM 3086 LM 3188
Technology
Helium-Neon laser Semiconductor laser
Wavelength
633nm, visible 655 nm, visible
Size ( source )
Weather-proof camera housing
(600*240*170) Much smaller housing
(145*125*80)
Range
0…0,1 D; 0…0,3 D;
0…1.0 D; 0…3.0 D 0…0,03 D; 0…0,1 D;
0…0,3 D; 0…1,0 D
Beam modulation None (option: mechanical ) Electronic
Mass density Optional 0…20g/m3 Digital LCD 0…2g/m3
There are further developments from these basic models available as well. Models with au-
tomatic zero/calibration (LM 3188AZL/AZH, LM 3195 and LM 3086EPA3) or with integral dis-
play unit (LA 3188) are described in their own manuals.
The model LX 3188 is identical in construction with LM 3188-model but utilises the new
superled source (640nm) as described earlier.
The complete laser instrument includes three parts: the source unit, the receiver unit and the
monitor unit. As these are separately available as spare parts, each of these have their own
type marking. The following gives the complete list of units with their differencies from each
other:
1) The laser source units
L 308 Red, He-Ne gas laser LM 3086
L 318 Red, Electr.mod. semiconductor laser LM 3188
L 318AZL/AZH Red, Chopped semiconductor laser LM 3188AZL/AZH
X 318 Red, Electr.mod. superled source LX 3188
2) The receiver units
R 308 No additional electronics included. LM 3086
R 318 (LM) De-modulation electronic included. LM 3188
R 318AZL/AZH Sync.detection electronic included. LM 3188AZL/AZH
R 318 (LX) De-modulation electronic included. LX 3188
All models have optically matched semiconductor detector with

50mm glass lens.