16
7
Safety and Regulatory Compliance
The laser used in the Clarity is by itself a Class IIIB device.
The power supply used in the product completely complies with EN60950 1992 +A1, +A2:1993,
+A3:1995, as well as LVD 73/23/EEC
The standard acetylene cell contains about 50 micrograms of acetylene at about 0.03 atmospheres
pressure. The only hazard from non-pressurized acetylene would be due to its flammable nature. If the
gas tube broke the contents would immediately mix with the air in the rest of the cell housing. The
resultant mixture would contain an acetylene concentration of 0.08% acetylene. This is considerably
less than the minimum of 2.7% necessary for the mixture to be flammable. The hydrogen cyanide cell
contains <100 micrograms of HCN and hence would pose no toxic hazard under any conditions.
The conclusion is that, as packaged, the cells do not contain a flammable or hazardous gas and hence
do not need a special transportation classification, may be shipped by any customary means.
8
Bibliography
1. F.Nez, F.Biraben, R. Felder, and Y. Millerioux, Opt. Comm. 102, 432-438 (1993)
2.
K. Nakagawa, M. de Labachelerie, Y. Awaji, and M. Kourogi, “Accurate optical frequency
atlas of the 1.5micron bands of acetylene” J. Opt. Soc. Am. B Vol. 13, No. 12, 2708-2714,
1996
3.
H. Sasada and K Yamada, “Calibration lines of HCN in the 1.5micron region”, Applied Optics,
Vol. 29, No. 24, 3535-3547, 1990
4.
S. Gilbert and W .Swann, “Acetylene
12
C
2
H
2
Absorption Reference for 1510-1540nm
Wavelength Calibration”, NIST Special Publication 260-133, 1998
5.
S. Gilbert and W .Swann, “Hydrogen Cyanide H
13
C
14
N Absorption Reference for 1530-
1560nm Wavelength Calibration”, NIST Special Publication 260-137, 1999
6. WC
Swann and S Gilbert, “Pressure Induced Shift and Broadening of 1510-1540nm
Acetylene Wavelength Calibration Lines”, To be Published in J of OSA B
7. N Picque and G Guelachvili, "Absolute Wavenumbers and Self- Induced Pressure Lineshift
Coefficients for the 3-0 Vibration-Rotation Band of CO", J of Mol Spec, Vol 185, p 244-248,
1997
8. HITRAN data base, www.hitran.com, administered at the Harvard-Smithsonian Center for
Astrophysics
