37
Appendix D
Specifi cations
Doppler Flow Specifi cations
Mode:
Continuous laser Doppler fl owmetry
Primary measurand:
Microvascular blood perfusion
(Relative RBC Flux)
LDF units:
Relative units (0-5000 Blood Perfusion
Units, corresponding to 0-5 V output)
BSC units:
Relative units (0-100% corresponding to
0-5 V output)
Laser type:
Semiconductor laser diode
(temperature stabilized)
Laser wavelength:
830 nm ± 10 nm
Laser power:
< 0.5 mW from probe
Laser class:
Class 1 (as per 21 CFR 1040-10 and
1040-11)
Doppler signal bandwidth:
16 kHz
Linearity range:
Up to 0.35% moving scatterers by volume
Flow response time:
< 0.2 s
Reading stability:
5% (measured with standard motility
solution)
Zeroing: Automatic,
controlled
D
A P P E N D I X
D
D
Specifi
cations
