mtts Light Meter User manual

Light Meter. User Manual
User Manual
Effective date: October 2019
Issue Number: 01 Version: 02 EN
Issue Date: November 2019 www.mtts-asia.com
MTTS Light Meter

V-1-02-EN
Light Meter. User Manual
Contents
Company Information
Introduction
Device Description
Warnings
Operation
Alarm System
Cleaning
Maintenance and Service

Explanation of Symbols
Warranty Policy
04
05
06
08
09
12
13
14
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Light Meter. User Manual
The MTTS Light Meter is a spectroradiometer for measuring the irra-
diance (radiant power) of neonatal phototherapy lights and bili-beds.
IntroductionCompany Information
MEDICAL TECHNOLOGY TRANSFER AND SERVICES Co., LTD
House No. 26, Alley 41, An Duong Vuong Street,
Tay Ho District, Hanoi City, Vietnam
Tel: [phone]
Fax: [phone]
Email: [email protected]om
www.mtts-asia.com
PROMETEO SRL
Via Mantova 9
38122 Trento
Italy
This user manual is intended for health care professionals.

      -
tions should be read before use.
WARNING - a warning statement refers to the conditions when
the possibility of injury to the patient or user exists if a proce-
dure is not followed correctly.
NOTE - a note statement provides additional information in-
tended to clarify points, procedures or instructions.
!
!
!
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Light Meter. User Manual
Sensor
Device Description
Device Description
The MTTS Light Meter is single measurement unit suitable for over-
head and bed type phototherapy. It has 2 sensors loc on both sides of
the meter.
Device Description
Display
ON/OFF button
Sensor
Batteries compartment

touch panel, do not press hard
Measuring Irradiance
The MTTS Light Meter is a spectroradiometer that measures the ther-
apeutic irradiance (radiant power) of neonatal phototherapy lights. It
measures the irradiance of the wavelengths from 440 to 465 nanom-
eters (nm), the blue-green portion of the spectrum, which includes the
principal action spectrum of bilirubin.
Units of Measurement
The MTTS Light Meter measures irradiance 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 nanom-
eter across the spectral band being measured, which is 50 nm wide.
This makes it possible to compare average irradiance across spectral
bands of different widths.
Instrument Response Characteristics

the MTTS Light Meter, which matches the action spectrum of bilirubin
as closely as possible.
390
10
20
30
40
400 410 420 430 440
Wavelength
%
440 450 460 470 480 490
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Warnings
Explosion hazard. Do not use this device in the presence of

Read and be familiar with this instruction manual before
using this device.
Only use this device under the direct supervision of a
licensed medical practitioner.
Inspect this device before each use to ensure proper
functioning.
!
!
!
!
The hospital/facility is responsible for ensuring that all per-
sonnel 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.
Operation
Taking Measurements - Overhead Phototherapy
1. Turn the MTTS Light Meter on.
2. Hold the MTTS Light Meter against the infant’s body as near to the
umbilical as possible and aim the Light Meter at the center of the

- For reproducible measurements, always hold the sensor on the
same place on the infant’s body.
- Changes in the distance or angle of the light to the patient will
change the irradiance the patient receives, requiring new measure-
ments to be taken.

touch panel, do not press hard
Phototherapy light
Sensor aimed for
maximum reading
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Light Meter. User Manual
3. Read irradiance measurement from the display. Adjust the aim of
the MTTS Light Meter sensor to obtain the maximum reading.
4. Press on/off button to turn MTTS Light Meter off. MTTS Light Meter
automatically shuts off after 1 minute to preserve battery life.
Operation
If more than one phototherapy light is being used on the
infant, take separate measurements for each light and chart
each reading.
Taking Measurements - Bili-Bed Phototherapy
1. Turn the MTTS Light Meter on.
2. Place the MTTS Light Meter in the middle of the lighted side of the

on the pad or mattress.
3. Read irradiance measurement from the display. Adjust the aim of
the Light Meter sensor to obtain the maximum reading.
4. Take two additional readings at different places on the pad, then
average all three readings.
5. Press on/off button to turn the Light Meter off. The Light Meter au-
tomatically shuts off after 1 minute to preserve battery life.

touch panel, do not press hard
Phototherapy bed
lighted side up
MTTS light meter
If a Bili-Bed is being used at the same time as an overhead
phototherapy light the Light Meter displays combined value
of both units.
Operation
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Alarm System
LOW BAT - Battery power is low; replace the battery (see page 10).
Cleaning
Required items:
To clean the Light Meter:

it off.
2. Dampen the cloth with either the mild soap-and-water solution or
detergent, then wipe down all exterior surfaces of the Light Meter.
Mild
Detergent
Clean
Cloth
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Maintenance and Service
Replacing the Batteries
       
device.
Read and be familiar with this instruction manual before us-
ing this device.
The printed circuit boards (PCBs) contain static sensitive
parts. Always use appropriate electrostatic discharge pro-
tection, such as an electrical-grounding wrist strap, when
working with internal components.
!
!
!
Required items:
2 x AA/LR6/1.5V alkaline, non-rechargeable batteries
To replace the battery:
1. Remove the back cover
2. Insert the new 1.5-volt batteries into the battery holder
Batteries cover
Batteries holder
Calibrating the Light Meter
Maintenance and Service
The MTTS Light Meter was factory calibrated to a radiometric stand-
ard in accordance to the National Institute of Standards and Technol-

To assure continued accurate measurement of irradiance, the MTTS
Light Meter should be recalibrated every 36 months to a radiometric
(irradiance) standard. Because certain calibration factors are stored
in the Light Meter memory, the Light Meter must be recalibrated at
MTTS. The date of the last calibration is labeled on the Calibration

Both the readout and sensor should be returned for calibration. The
Light Meters under warranty are recalibrated at no cost. Others are
recalibrated at nominal cost. For information on returning the Light
Meter, see below.
Service and Repair
The MTTS Light Meter has no customer serviceable parts, and must
be returned to MTTS for all repairs and parts replacement. After any
service, the Light Meter must be recalibrated radiometrically to as-
sure accurate measurement of irradiance.
Customer attempts to service the Light Meter will invalidate
the warranty and may result in irreparable damage
!
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Returning for Service
Maintenance and Service
When sending equipment for service:
- Contact MTTS Technical Service for a Return Merchandise Authori-
zation (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 Asia, ship the equipment to:
Medical Technology Transfer and Services (MTTS) Ltd
No 26 Lane 41 An Duong Vuong
Tay Ho, Hanoi
Specications
Specications

Control Settings
Wavelength spectrum
Measuring range
Accuracy
Displays
Characteristics
Features
Indicators
440–465 nm
0.0 – 150.0 µW/cm²/nm
+/- 2%
Liquid-crystal display (LCD)
4 digits, indicator, automatic off after 1 min
low battery

Dimensions (HxWxD)
Total unit mass
12.5cm x 7.0cm x 2.4cm
225 g

Battery
Operational Duration
2 x 1.5V alkaline battery, non-rechargeable
Up to 120h
Operating
Transport and storage
Exclusions
Ambient temperature 0°C to 40°C
Humidity: 0% to 90% RH non condensing
Atmospheric Pressure: 70-106kPa
Ambient temperature 0°C to +50°C
Humidity: 0% to 90% RH non condensing
Atmospheric Pressure: 70-106kPa
None

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Light Meter. User Manual
Standards for Reference
ISO 13485:2016
IEC 61010-1:2010 - General safety
IEC 61326-1:2012 - EMC
Specications Explanation of Symbols
Explanation of Symbols
Do not disassemble Light Meter unless you are an MTTS
trained technician or have been instructed to by quali-

Device manufacturer.
Date of manufacture.
Keep out of direct sunlight.
This device should be disposed of separately from
normal household waste so that components can be
recycled.
Refer to User Manual before operating this device.
Serial Number
Power supply polarity
12V DC 5A 12 Volt, Direct Current, 5 Ampere

2265
Name and address of European Authorized Representative
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Warranty Policy
General Terms
This MTTS Limited Warranty gives you, the customer,
express limited warranty rights from MTTS, the manu-

Please refer to the MTTS Website for an extensive de-
scription of your limited warranty entitlements. In addi-
tion, you may also have other legal rights under applica-
ble law or special written agreement with MTTS.
MTTS MAKES NO OTHER EXPRESS WARRANTY OR
CONDITION WHETHER WRITTEN OR ORAL AND MTTS
EXPRESSLY DISCLAIMS ALL WARRANTIES AND CON
DITIONS NOT STATED IN THIS LIMITED WARRANTY.
TO THE EXTENT ALLOWED BY LOCAL LAW OF JURIS
DICTIONS OUTSIDE VIETNAM, MTTS DISCLAIMS ALL
IMPLIED WARRANTIES OR CONDITIONS, INCLUDING
ANY IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. FOR ALL
TRANSACTIONS OCCURRING IN VIETNAM ANY IMPLIED
WARRANTY OR CONDITION OF MERCHANTABILITY,
SATISFACTORY QUALITY, OR FITNESS FOR A PARTICU
LAR PURPOSE IS LIMITED TO THE DURATION OF THE
EXPRESS WARRANTY SET FORTH ABOVE. SOME COUN
TRIES DO NOT ALLOW A LIMITATION ON HOW LONG
AN IMPLIED WARRANTY LASTS OR THE EXCLUSION
OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES FOR CONSUMER PRODUCTS. IN SUCH
COUNTRIES, SOME EXCLUSIONS OR LIMITATIONS OF
THIS LIMITED WARRANTY MAY NOT APPLY TO YOU. FOR
CONSUMER TRANSACTION, THE LIMITED WARRANTY
TERMS CONTAINED IN THIS STATEMENT, EXCEPT TO
THE EXTENT LAWFULLY PERMITTED, DO NOT EXCLUDE,
RESTRICT, OR MODIFY BUT ARE IN ADDITION TO THE
MANDATORY STATUTORY RIGHTS APPLICABLE TO THE
SALE OF THIS PRODUCT TO YOU.
This Limited Warranty is applicable in all countries and
may be enforced in any country or region where MTTS or
its authorized service providers offer warranty service for
the same product model number (subject to the terms
and conditions set forth in this Limited Warranty)
Under this Limited Warranty, products purchased in one
country or region may be transferred to another country
or region where MTTS or its authorized service provid-
ers offer warranty service for the same product model
number. Warranty terms, service availability, and service
response times may vary from country or region to coun-
try or region. Standard warranty service response time is
subject to change due to local parts availability. If so, your
MTTS authorized service provider can provide you with
      
MTTS product to make it operate in a country for which
it was never intended to function for legal or regulatory
reasons. MTTS is not responsible for any tariffs or duties
that may be incurred in transferring the products.
MTTS guarantees that the product that you have pur-
chased or leased from MTTS is free from defects in
materials or workmanship under normal use during
Limited Warranty Period. The Limited Warranty Period
starts on the date of purchase or lease from MTTS, or
from the date MTTS completes installation. Your dated
sales or delivery receipt, showing the date of purchase of
the product, is your proof of the purchase or lease date.
You may be required to provide proof or purchase or lease
as a condition of receiving warranty service. You are enti-
tled to hardware warranty service according to the terms
and conditions of this document if a repair to your MTTS
product is required within the Limited Warranty Period.
Unless otherwise stated, and to the extent permitted by
local law, new MTTS product may be manufactured using
new materials and used materials equivalent to new in
performance and reliability. MTTS may repair or replace
MTTS products (a) with new or previously used products
or parts equivalent to new in performance and reliability,
or (b) with equivalent products to an original product that
has been discontinued. Replacement parts are warrant-
ed to be free from defects in material or workmanship for
ninety (90) days or, for the reminder of Limited Warranty
Period of the MTTS product they are replacing or in which
they are installed, whichever is longer.
MTTS will, at its sole discretion, repair or replace any
components or product that manifests a defect in ma-
terials or workmanship during the Limited Warranty
Period. All component parts removed under this Limited
Warranty become the property of MTTS. In the unlikely
event that your MTTS product has recurring failures,
MTTS at its sole discretion, may elect to provide you with
(a) a replacement unit selected by MTTS that is the same
or equivalent to your MTTS product in performance or (b)
to give you a refund of your purchase price or lease pay-
ments (less interests) instead of a replacement. This is
your exclusive remedy for defective products.
Exclusions
MTTS DOES NOT WARRANT THAT THE OPERATION OF

FREE. MTTS IS NOT RESPONSIBLE FOR DAMAGE THAT
OCCURS AS RESULT OF YOUR FAILURE TO FOLLOW THE
INSTRUCTIONS INTENDED FOR THE PRODUCT.
This Limited Warranty does not apply to expendable or
consumable parts and does not extend to any product
from which the serial number has been removed or that
gas been damaged or rendered defective (a) as a result
of accident, misuse, abuse, contamination, improper or
inadequate maintenance or calibration (if required) or
other external causes; (b) by operation outside the usage
parameters stated in the user documentation shipped
with the product; (c) by software, interfacing, parts or
supplies not supplier by MTTS; (d) improper site prepara-
tion or maintenance; (e) virus infection; (f) loss or dam-

other than (i) MTTS personnel, (ii) an MTTS authorized
service provider, or (iii) your own installation of end-user
replaceable MTTS or MTTS approved parts if available
for your MTTS product in the servicing country or region.
Limitation of Liability
IF YOUR MTTS PRODUCT FAILS TO WORK AS WARRANT
ED ABOVE, THE MAXIMUM LIABILITY OF MTTS UNDER
THIS LIMITED WARRANTY IS EXPRESSLY LIMITED TO
THE LESSER OF THE PRICE YOU HAVE PAID FOR THE
PRODUCT OR THE COSTS OF REPAIR OR REPLACE
MENT OF ANY HARDWARE COMPONENTS THAT MAL
FUNCTION IN CONDITIONS OF NORMAL USE.
EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL
MTTS BE LIABLE FOR ANY DAMAGES CAUSED BY THE
PRODUCT OR THE FAILURE OF THE PRODUCT TO PER
FORM, INCLUDING ANY LOST PROFITS OR SAVINGS OR
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
MTTS IS NOT LIABLE FOR ANY CLAIM MADE BY A THIRD
PARTY OR MADE BY YOU FOR A THIRD PARTY.
THIS LIMITATION OF LIABILITY APPLIES WHETHER
DAMAGES ARE SOUGHT, OR CLAIM MADE, UNDER THIS
       

CONTRACT CLAIM, OR ANY OTHER CLAIM. THIS LIMITA
TION LIABILITY CANNOT BE WAIVED OR AMENDED BY
ANY PERSON. THIS LIMITATION OF LIABILITY WILL BE
EFFECTIVE EVEN IF YOU HAVE ADVISED MTTS OF THE
POSSIBILITY OF ANY SUCH DAMAGES. THIS LIMITATION
OF LIABILITY, HOWEVER, WILL NOT APPLY TO CLAIMS
FOR PERSONAL INJURY.
THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS. YOU MAY ALSO HAVE OTHER RIGHTS THAT MAY
VARY FROM COUNTRY TO COUNTRY. YOU ARE ADVISED
TO CONSULT APPLICABLE COUNTRY LAWS FOR A FULL
DETERMINATION OF YOUR RIGHTS.
Warranty Policy
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Light Meter. User Manual
Limited Warranty Period
The Limited Warranty Period for this MTTS product is a
        -
     
your sales receipt is the date of purchase unless MTTS or
your reseller informs you otherwise in writing.
Customer Responsibilities
In order to avoid the risk of charges for issues not cov-
ered by your limited warranty (issues that are not due to
defects in materials and workmanship on MTTS product),
you will be asked to assist MTTS as follows:
Contacting MTTS
If your MTTS product fails during the Limited Warranty
Period and the suggestions in the product documenta-
tion do not solve the problem, you can receive support by
doing one of the following:
     
install software patches, run MTTS diagnostics and
utilities;
Implement temporary procedures or workarounds
provided by MTTS while MTTS works on permanent
solution;
Cooperate with MTTS in attempting to resolve the
problem using online chat, email, or telephone.
This may involve performing routine diagnostic pro-
cedures, installing additional software updates or
patches;

of warranty service provided by MTTS and any other
actions that MTTS may reasonably request in order to
best perform the warranty support
Locate and contact your nearest MTTS service pro-
vider via MTTS website:
http://www.mtts-asia.com/support/
Call the Technical Support Centre:
[phone]
-
-
Before calling MTTS or an MTTS authorized service pro-
vider please have the following information available:
Product serial number and model name
Applicable error messages
Detailed questions
-
-
-
CUSTOMER IS RESPONSIBLE FOR DELIVERING THE
    
CATION TO THE MTTS AUTHORIZED SERVICE POINT.
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-
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Warranty Policy
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MEDICAL TECHNOLOGY TRANSFER AND SERVICES Co., LTD
House No. 26, Alley 41, An Duong Vuong Street,
Tay Ho District, Hanoi City, Vietnam
Tel: [phone]
Fax: [phone]
Email: [email protected]om
www.mtts-asia.com
PROMETEO SRL
Via Mantova 9
38122 Trento
Italy