International Light Technologies BiliBlanket ILT750-BILI454 User manual

ILT750-BILI454
Blue Light Meter
Operaon Manual
ILT750-BILI454 Manual Rev A, Dated 4/22/2021 Page number 1 r 7

Table of Contents
1. Introduction 3
2. Button Features 3
3. Taking a Measurement 5
3A. Measurement O er iew 5
4. Graphing 5
5. Battery 6
6. Sensor 6
7. Calibration 7
8. Warranty 7
ILT750-BILI454 Manual Rev A, Dated 4/22/2021 Page number 2 r 7

The ILT750-BILI454 versi n was designed t match the Ohmeda Biliblanket II light meter b th
spatially and spectrally. ILT’s m dernized versi n Bili Blue Light Meter is registered as a class 1
medical device and was designed, manufactured and calibrated t ur highest standards,
including, ISO13485, ISO9001, ISO170245 and NIST Traceability.
1. INTRODUCTION
The ILT750-BILI454 is a hand held bili (blue light) light meter designed t measure b th
irradiance in watts per square centimeter (W/cm²) and band irradiance in watts per square
centimeter per nan meter (W/cm²/nm). It can be used t measure all types f GE ne natal
ph t therapy blue light s urces including LED light s urces, illuminated pads and blankets, and
traditi nal lamp based lighting systems. The system was designed t cl sely match the
disc ntinued Ohmeda sens r design and measures the spectral range f 420 t 520 nm.
The ILT750 includes 2 AA batteries, a st rage case, and a NIST traceable/ISO17025 accredited
calibrati n with certificate.
2. BUTTON FEATURES
The ILT750 Bili Light Meter has a f ur butt n membrane fr nt panel with that all ws numer us
pr cesses.
1 POWER ON / OFF (0.5 SEC)
L ng press (On) and l ng press (Off): Turn device n r ff.
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2 HOLD / ZERO (4SEC)
HOLD: Sh rt press - Freezes the values sh wn n the display. “HOLD” will be displayed in
the upper left f the screen when in h ld m de. Sh rt press again t turn ff HOLD. The display
will bec me active again.
ZERO: Takes a reading and subtracts that value fr m all future readings. ZERO is activated
with a l ng press(4 sec nds). A “Z” will appear in the l wer left f the screen t indicate the
meter has had a user zer applied. NOTE: The meter will revert back t fact ry zer each time
it is shut ff.
2A. Ambient ZERO: Place the sens r in the measurement l cati n with the test s urce
ff. Wait 2-3 sec nds f r the system t take a measurement f the ambient light levels.
Perf rm a l ng press (4 sec nds) t rec rd an Ambient Zer . The meter will subtract
the ambient light reading fr m all readings taken until a new zer is perf rmed r the
meter is turned ff. Turn the lamp n and measure nly the light supplied fr m the test
lamp.
2B. Dark ZERO: The ILT750 c mes with the fact ry zer setting pre-pr grammed and
d es n t require a user dark. T perf rm a dark zer , c ver the sens r with an paque
bject, wait 2-3 sec nds and l ng press the zer butt n f r 4 sec.
3 UNITS
Short press to toggle units and calibration factors.
Th ugh µW/cm2/nm is bec ming a m re pred minantly used set f units f r testing blue lights
used t reduce bilirubin levels in the bl d, there are still many s urces and light meters that
ffer the units f W/cm2. Rather than requiring 2 sens rs r 2 calibrati ns, The ILT750 can
switch between W/cm2/nm and W/cm2 with the t uch f a butt n. The units will be sh wn n
the display al ng with the numerical values. The ILT750 will aut -range and the prefix will
update t indicate the c rrect light level(p, n, u, m). F r example, values less than 1
µW/cm2/nm will be sh wn as nW/cm2/nm and values higher than 999 µW/cm2/nm will be
sh wn as mW/cm2/nm.
4 GRAPH MODE
Short press to cycle through the graphing functions.
The Graph butt n has f ur functi ns that cycle forward each time butt n 4 is pressed. Start,
St p, Stats, Exit. It is n t p ssible t return t a previ us screen.
GRAPH: Changes the display t graphing m de and begins pl tting the results and temp rarily
st ring the readings f r final data analysis.
STOP: St ps graphing and h lds the display sh wing the last 60 results(30 sec nds)
ILT750-BILI454 Manual Rev A, Dated 4/22/2021 Page number 4 r 7

DATA: Sh ws the data analysis fr m when Graph was first pressed, including Min, Max, and
Average.
EXIT: Returns the display t numerical /n n graphing m de and clears the previ us graph data
fr m the display.
3. TAKING A MEASUREMENT
The ILT750 sens r is calibrated with the entire surface f the d med diffuser ver-filled with
light. The calibrati n reference plane is the fr nt surface f the h using. When taking an
irradiance r band irradiance measurement, the same c nditi ns sh uld be applied. The light
s urce t be measured must fully c ver the sens r. The sens r sh uld be placed s that the
fr nt surface is at the treatment l cati n and perpendicular t the s urce.
The ILT750 ffers simple perati n. Simply turn n the lamp, press and h ld butt n 1 t turn n
the meter, place the sens r in the measurement l cati n and view the results n the display.
3A Measurement O er iew:
L ng Press butt n 1 until the meter turns n.
Change the units as needed by pressing butt n 3.
Turn n the lamp and let it warm up 2 minutes ( r l nger).
Place the sens r in the measurement l cati n with the fr nt surface f the sens r
perpendicular t the lamp, at the same distance as the patient will be placed.
The meter will begin pr viding a read ut n the display, updating every ½ sec nd.
Press butt n 4 t graph and analyze the results as needed.
L ng press butt n 1 t shut ff y ur device, r wait 5 minutes and the meter will shut ff
aut matically t c nserve battery life.
(N te: the ILT750 meter is a lamp/light s urce diagn stic t l. The meter and sens r
head are n t intended t be used while a patient is underg ing treatment r t c me in
c ntact with the patient.)
4. GRAPHING
The graph m de is designed t test the unif rmity r stability f a light’s utput f r up t 30
sec nds.
The bar graph updates every 1/2 sec nd ffering an easy t evaluate, visual resp nse t
changes in intensity ver time. The graph can display up t 60 readings (30 sec nds) and will
begin t scr ll f rward sh wing nly the m st current 60 readings when used f r l nger
durati ns.
If the sens r is m ved sl wly acr ss a bili-pad/blanket r under a lamp, the ILT750 will map the
uniformity f the utput ver the target area. If the sens r is held stati nary, graph m de can
verify the stability f the lamps utput.
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