natus neoBLUE LED Phototherapy Radiometer User manual

602014 RevD
User Manual
neoBLUE® LED Phototherapy
Radiometer
CAUTION
Read and be familiar with this manual before operating
or servicing this device. To ensure operator, technician, and patient
safety, use only as specified in this manual.

Natus is a registered trademark of Natus Medical Incorporated.
Copyright © 2021 Natus Medical Incorporated. All rights reserved.
This manual may not be reprinted or copied in whole or in part without written consent from
Natus Medical Incorporated. The content of this manual may change without notice.
Natus Medical Incorporated
1501 Industrial Road
San Carlos, CA 94070 USA
Telephone: [phone]
Fax: [phone]
Global sales & support: 1-800-303-0306
Technical Service Fax: [phone]
Email: [email protected]
Customer Service Fax: [phone]
Email: [email protected]
International Support: Please contact your local Distributor.
Distributor locations can be found at www.natus.com
Manufactured by:
Natus Medical Incorporated
DBA Excel-Tech Ltd. (XLTEK)
2568 Bristol Circle
Oakville, Ontario L6H 5S1
Canada
natus.com
Telephone: [phone]
Caution: United States Federal Law restricts this device to sale or use by or on the order of a physician (or properly
licensed practitioner).

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual i
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Instrument Response Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Connecting the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Disconnecting the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Verifying Proper Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Taking Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Maintenance and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Calibrating the Radiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Returning for Calibration or Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Contacting Natus Medical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Drawings and Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

ii neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual 1
Overview
This manual provides the necessary information to maintain and service the
neoBLUE® LED Phototherapy Radiometer. The operating instructions in this
manual are intended for use by hospital personnel. The service instructions in this
manual are intended for use by qualified technicians.
Conventions
The following conventions are used in this manual.
Symbols
The following symbols are located on the Radiometer and its packaging.
CAUTION
Read and be familiar with this instruction manual before installing, operating, or servicing this
device.
CAUTION
If this equipment is used in a manner not specified by this manual, the protection provided by the
equipment may be impaired.
Table 1 Conventions
Convention Description
NOTE

Notes provide additional information to clarify a point in the text.
CAUTION
Cautions indicate situations that, if not avoided, could result in minor to moderate
injury to the patient or operator, or damage to the equipment.
WARNING
Warnings indicate situations that, if not avoided, could result in serious injury or
death to the patient or operator.
Table 2 Symbols
Symbol Definition Symbol Definition
Atmospheric pressure Shipping
lBattery Storage
Caution, read instructions Temperature
Humidity, condensing Manufacturer
Electronic waste
(see Specifications)
Authorized representative

2 neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual
Intended Use
The neoBLUE LED Phototherapy Radiometer is a spectroradiometer for measuring
the irradiance (radiant power) of neoBLUE light-emitting diode (LED)
phototherapy devices.
Description
The Radiometer is comprised of a readout and a detachable sensor, as illustrated in
Figure 1.
Figure 1 neoBLUE LED Phototherapy Radiometer
The Radiometer measures the irradiance of wavelengths from 420 to 500
nanometers (nm), the blue-green portion of the spectrum, which includes the
bilirubin peak absorption wavelength. It measures intensity in units of microwatts
per square centimeter per nanometer (µW/cm2/nm). A nanometer is a measure of
wavelength equal to one-billionth of a centimeter. The term “per nanometer”
indicates the average irradiance per nanometer across the spectral band to be
measured, which is 80 nm wide. Measuring in this fashion makes it possible to
compare average irradiance across spectral bands of different widths.
Instrument Response Characteristics
Figure 2 represents the nominal response characteristics of the neoBLUE
Radiometer, which corresponds to the peak absorption spectrum of bilirubin.
Figure 2 Nominal response of the Radiometer
NOTE

This product is suitable only for measuring with neoBLUE products. It does not accurately
measure broadband sources such as halogen or fluorescent.
Sensor cable
connection
Display
ON/READ button

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual 3
This instrument is calibrated at 72° F (22° C). Readings may change with
temperature and increase at the rate of approximately 0.15% per °F (0.27% per °C).
Readings are not affected by momentary exposure (3 minutes or less) to
temperature changes of less than 20° C, such as readings taken in an incubator.
Operation
Connecting the Sensor
The sensor connects to the socket on the readout. To connect, turn the connector
until the keyed slots are aligned, and then carefully insert the connector into the
socket.
Figure 3 Connecting the sensor to the readout
WARNING
Explosion hazard. Do not use this device in the presence of flammables (for example, oxygen,
nitrous oxide, and anesthetics).
CAUTION
Read and be familiar with this instruction manual before using this device.
This product should only be used by technically qualified hospital personnel.
Inspect this device before each use to ensure proper functioning.
If meter or sensor is dropped a distance of 1 foot or more, verify proper operation and compare
reading to that of a known good meter. Have unit recalibrated as necessary.
NOTE

The hospital or facility is responsible for ensuring that all personnel who operate or maintain
this device are trained in its operation and safe use, and for maintaining training records of
attendance and evidence of understanding.
Readout
Socket
Connector

4 neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual
Disconnecting the Sensor
To remove the sensor, pull back on the connector (toward the sensor).
Figure 4 Disconnecting the sensor
Verifying Proper Operation
Verify proper operation on receipt of a new Radiometer, after servicing, and before
each use.
To verify proper operation:
1Confirm that calibration is current by checking the calibration date sticker both
on the bottom of the sensor and on the bottom of the readout.
2Confirm that the sensor is connected to the readout.
3Hold the sensor near a neoBLUE phototherapy light, and press the ON/READ
button. Verify that a reading appears and that it changes as the position of the
sensor moves.
4Release the ON/READ button, and verify that the reading continues to be
displayed for 30 seconds.
Taking Measurements
To measure overhead lights:
1Connect the sensor to the readout.
2Hold the sensor against the infant’s body as near to the umbilical region as
possible and aim the sensor at the center of the neoBLUE phototherapy light
(see Figure 5).
For reproducible measurements, always hold the sensor at the same place on
the infant’s body.
Changes in the distance or angle of the light to the patient will change the
intensity (irradiance) reading.
CAUTION
To avoid damage, never pull on the cable to remove the connector.
Readout
Pull
Connector sleeve
NOTE

Factory calibration of neoBLUE lights occurs at a distance of 12 inches (30 cm) from the
infant. Use or measurement of a neoBLUE light at other distances results in different
intensity readings.

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual 5
Figure 5 Measuring overhead lights
3Press and hold the ON/READ button. “On” is displayed briefly, and then the
intensity measurement is displayed. While pressing the button, adjust the aim of
the sensor to obtain the maximum reading.
4Release the ON/READ button. The intensity measurement locks on the display
for 30 seconds and then automatically shuts off to preserve battery life.
If more than one phototherapy light is used on the infant, keep all the lights on
to accurately measure the intensity of light that is being delivered to the patient.
To measure the neoBLUE cozy light:
1Connect the sensor to the readout.
2Place the sensor, with the white sensor facing down, in the middle of the lighted
side of the covered mattress (see Figure 6). The disposable cover should be on
the mattress.
Figure 6 Measuring the neoBLUE cozy light
3Press and hold the ON/READ button. “On” is displayed briefly, and then the
intensity measurement is displayed.
neoBLUE Phototherapy
light
Sensor aimed for maximum reading
NOTE

See the service procedures for individual neoBLUE lights for instructions about adjusting the
intensity with this radiometer.
Mattress with cover in place
sensor
NOTE

Place the entire white diffuser of the sensor over the lighted area of the mattress to avoid
inaccurate measurements.

6 neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual
4Release the ON/READ button. The intensity measurement locks on the display
for 30 seconds and then automatically shuts off to preserve battery life.
Messages
The following messages may be displayed on the readout.
Cleaning
Required items:
Soft cloth
Mild cleaning detergent (for example, Virex™ Tb, Virustat®, Coverage® cleaners)
or mild soap-and-water solution
To clean the Radiometer:
1Confirm that the Radiometer is off. If it is on, press the ON/READ button to
turn it off.
2Dampen the cloth with either the mild soap-and-water solution or detergent, and
then wipe down all exterior surfaces of the Radiometer.
CAUTION
Do not leave the radiometer under radiant warmer or in incubator for extended periods of time
because inaccurate readings can occur.
Table 3 Messages
Display Message Description
Low Bat Battery power is low; replace the battery (see page 7).
Over Range If 150.0 flashes on the display when the ON/READ button is pressed,
the intensity is greater than 150 µW/cm²/nm and is out of range of the
Radiometer.
Error If dashes flash on the display when the ON/READ button is pressed, an
error condition is present:
The sensor may not be connected. Check the sensor connection.
The sensor may have failed. Try to read again. If the problem
continues, contact Natus Technical Service or your local Natus
representative (see page 8).
The digital readout may have failed. Try to read again. If the
problem continues, contact Natus Technical Service or your local
Natus representative (see page 8).
CAUTION
Regularly clean unit per hospital infection control procedures to prevent cross-contamination.
Do not allow liquid to enter the Radiometer case because this can cause electrical damage.
150.0

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual 7
Maintenance and Service
Replacing the Battery
Required items:
5/64-in. Allen wrench
9-volt alkaline, non-rechargeable battery (ANSI/NEDA type 1604A or IEC type
6LR61)
To replace the battery:
1Remove the back cover: Loosen and remove the four screws that secure the
back cover of the readout (see Figure 7).
Figure 7 Replacing the battery
2Insert the new 9-volt battery into the battery holder.
3Verify proper operation.
Calibrating the Radiometer
The Radiometer was factory calibrated to a radiometric standard traceable to the
National Institute of Standards and Technology (NIST). The calibration certificate
is enclosed with this manual.
To assure continued accurate measurement of irradiance, the Radiometer should be
recalibrated every 12 months to a radiometric (irradiance) standard. Because
certain calibration factors are stored in the its memory, the Radiometer must be
recalibrated at the factory. The date of the last calibration and the date calibration is
CAUTION
Only qualified technicians should maintain or service this device.
Read and be familiar with this instruction manual before maintaining or servicing this device.
Do not allow liquid to enter the Radiometer case because this can cause electrical damage.
The printed circuit boards (PCBs) contain static sensitive parts. Always use appropriate
electrostatic discharge protection, such as an electrical-grounding wrist strap, when working with
internal components.
To assure accuracy, factory-calibrate the neoBLUE LED Phototherapy Radiometer to a
radiometric standard annually (see Calibrating the Radiometer).
NOTE

An instruction label on the inside of the back cover illustrates how to remove and insert
the battery.
Screws (x4)
Back cover
Battery
Battery holder Polarity icons

8 neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual
due are labeled on the readout and sensor. Both the readout and the sensor should
be returned for calibration.
Service and Repair
The neoBLUE LED Phototherapy Radiometer has no customer serviceable parts
and must be returned to the factory or an authorized service center for all repairs
and parts replacement. After any service, the Radiometer must be recalibrated
radiometrically to assure accurate measurement of irradiance.
Returning for Calibration or Service
The readout and the sensor must be returned together for calibration or service.
When sending equipment for service:
Contact Natus Technical Service for a Return Merchandise Authorization
(RMA) number and the location where the equipment should be sent.
Clean the device, securely package it, and include the RMA number on the
outside of the box.
In the U.S., ship the equipment to:
Natus Incorporated
3150 Pleasant View Road
Middleton, WI USA 53562
Contacting Natus Medical
To order additional Radiometers or sensors, contact:
Natus Medical Incorporated
1501 Industrial Road
San Carlos, CA 94070 USA
Telephone: [phone]
Fax: [phone]
Global sales & support: 1-800-303-0306
Customer Service Fax: [phone]
E-mail: [email protected]
Technical Service Fax: [phone]
E-mail: [email protected]
International Support: Please contact your local Distributor.
Distributor locations can be found at www.natus.com
CAUTION
Customer attempts to service the Radiometer will invalidate the warranty and may result in
irreparable damage.

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual 9
Specifications
Dimensions
Digital Readout Unit
7.25 in. long x 3.4 in. wide x 1.75 in. deep
18.4 cm high x 8.6 cm wide x 4.4 cm deep
Sensor
1.5 in. high x 2.5 in. diameter; 46 in. cable
3.8 cm high x 6.4 cm diameter; 116.8 cm cable
Weight
Digital Readout Unit: 13 oz 369 g
Sensor: 5.25 oz 149 g
Measurement Range
Bandwidth: 420–500 nm
Irradiance: 0–150.0 µW/cm2/nm
Accuracy
±6% of reading at 460 nm, 72° F (22° C)
±10% meter to meter
Electrical
9V alkaline battery, non-rechargeable
ANSI/NEDA type 1604A or IEC type 6LR61
Environmental
Temperature
Operating: 41–104°F 5–40°C
Shipping: -40–158°F -40–70°C
Storage: -4–113°F -20–45°C
Relative Humidity (RH)
Operating: 10–95%, non-condensing
Shipping/Storage: 10–100%, condensing
Operating Altitude
Up to 10,000 ft Up to 3,000 m
Operating/Shipping Pressure
0.6–1.0 atm 600-1060 hPA
Controls
ON/READ button turns on digital readout unit;
the irradiance reading locks on the display when
the button is released. The device automatically
shuts off after 30 seconds.
Display
Liquid-crystal display (LCD)
Ordering Information
Item
neoBLUE LED Phototherapy
Radiometer . . . . . . . . . . . . . . . . . . . . . . . . 53870
Radiometer sensor . . . . . . . . . . . . . . . . . 401671
Regulatory, Electrical Safety,
and Classifications
FDA Class 1
Health Canada Class 2
UL/CSA/IEC 61010-1
IEC 61326
Ordinary Equipment (IPXØ)
Indoor Use Only
Pollution Degree 2
The Declaration of Conformity is available
on request.
Electromagnetic Compatibility
Meets the IEC 61326 standard. In some
situations such as contact electrostatic
discharge, abnormal operation (for example,
display fluctuation) or lock-up may occur. If so,
re-orient the meter and/or allow it to auto-reset
and retake the reading.
Product Disposal
Disposal does not require any special
precautions. Dispose of according to your local
disposal regulations.
For EU member states:
Do not dispose of this product with your
household waste. Please contact Natus Customer
Service regarding the proper disposal of this
equipment. Recycling this product helps conserve
natural resources and prevents potential negative
consequences to the environment and human
health caused by inappropriate waste handling.

10 neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual

neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual 11
Drawings and Schematics
Figure 8 neoBLUE LED Phototherapy Radiometer - Schematic, Drawing No. 700271, Rev. C

-12 neoBLUE LED PHOTOTHERAPY RADIOMETER Instruction Manual