Chapter 6
Measuring the neoBLUE light with a radiometer
The light output of the neoBLUE
®
LED Phototherapy System was factory calibrated with the neoBLUE
Radiometer to provide an initial intensity of 35 µW/cm
2
/nm at the high setting and 15 µW/cm
2
/nm at the
low setting
at a distance of 12 inches (30.5 cm) from the light enclosure to the baby. This measurement is
taken at the central area of the effective surface area for phototherapy.
The intensity of the light is inversely related to the distance from the source. The light output can be
adjusted using the two potentiometers (located on the side of the light enclosure) to accommodate
different distances. Please refer to Section 2.4, Adjusting Light Intensity to adjust the neoBLUE light to the
desired intensity when changing the distance.
Because your facility may use a different radiometer to measure light intensity output, it is necessary to
understand how your reading correlates to the neoBLUE Radiometer reading. The following table
provides a light intensity output conversion chart,
Table 6.1
NEOBLUE LIGHT INTENSITY OUTPUT CONVERSTION CHART
Radiometer:
Natus
®
neoBLUE
®
Radiometer *
Olympic Bili-
meter
®
Ohmeda Bili-
blanket
®
Meter II
Joey
®
Dosimeter
Model JD100
Intensity:
(µW/cm
2
/nm)
15
9
14
32
20
13
19
43
25
16
23
53
30
19
28
64
35
22
32
75
40
25
37
86
45
28
42
96
50
31
46
107
All the readings above are in units of µW/cm²/nm. Given variations in radiometers and light sources, this
should be used as a guideline only with a tolerance of +/- 10%.
* This Radiometer (P/N 53870) is used for measuring the neoBLUE light intensity output prior to shipment.
neoBLUE
®
LED Phototherapy System Service Manual
41
PN 001320 Rev K
Содержание neoBLUE
Страница 1: ...Service Manual...
