neoBLUE
®
mini System Service Manual
P/N 051466F
17
C H A P T E R 5
M
EASURING THE
NEO
BLUE
MINI
L
IGHT
WITH A
R
ADIOMETER
This section provides important information about using radiometers to measure the light
intensity output of the neoBLUE®mini LED Phototherapy device.
Natus recommends that the neoBLUE mini light intensity output be checked with a radiometer per
hospital protocol or at least every six months. In addition, your radiometer should be calibrated according
to the manufacturer’s specifications (typically on an annual basis). Checking intensity before each use
will confirm the “dosage” of light being delivered. In addition, by checking the intensity at the center of the
infant and at the infant’s head and feet, you can confirm proper placement of the light.
The intensity of the light is inversely related to the distance from the source. The neoBLUE mini LED
Phototherapy system can be placed closer to the infant, yielding a higher intensity and thus delivering a
higher dosage treatment. Please refer to Section 2.3.2, Adjusting Light Intensity, to adjust the neoBLUE
mini light to the desired intensity when changing the distance. Natus recommends calibrating to between
30 – 35
μ
W/cm
2
/nm.
The light intensity output of the neoBLUE mini device is measured with the neoBLUE® Radiometer by the
manufacturer prior to shipment. Because your facility may use a different radiometer to measure light
intensity output, it is necessary to understand how your reading correlates to the Natus reading. The
following table provides a light intensity output conversion chart, when measured at 12 inches (30.5 cm)
from the center of the neoBLUE mini light enclosure.
NEOBLUE LIGHT INTENSITY OUTPUT CONVERSTION CHART
Radiometer:
Natus®
neoBLUE
®
Radiometer *
Ohmeda Bili-
blanket® Meter
II
Joey®
Dosimeter
Model JD100
Olympic® Bili-
meter®
35 35 91 23
Intensity:
(µW/cm
2
/nm)
30 30 78 20
* This Radiometer (P/N 53870) is used for measuring the neoBLUE light intensity output prior to shipment.
If you have any questions, please contact Natus Medical Incorporated Technical Service at 1-800-
303-0306 or your authorized service representative.
