Thermoteknix FevIR Scan 2 User manual
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© Thermoteknix Systems Ltd 2023
FevIR Scan 2
Skin Temperature
Measurement System
Operation Manual
Part No - GC010006
August 2023 - Version 6.3
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© Thermoteknix Systems Ltd 2023
Copyright © 2021 - 2023 Thermoteknix Systems Ltd.
ALL RIGHTS RESERVED.
Any and all information, including, among others, wordings, pictures, graphs are the
properties of Thermoteknix Systems Ltd. (hereinafter referred to be
“Thermoteknix”). This user manual (hereinafter referred to be “the Manual”) cannot
be reproduced, changed, translated, or distributed, partially or wholly, by any
means, without the prior written permission of Thermoteknix. Unless otherwise
stipulated, Thermoteknix does not make any warranties, guarantees or
representations, express or implied, regarding to the Manual.
About this Manual
The Manual includes instructions for using and managing the product. Pictures,
charts, images and all other information hereinafter are for description and
explanation only. The information contained in the Manual is subject to change,
without notice, due to firmware updates or other reasons.
Please use this user manual under the guidance of professionals.
Legal Disclaimer
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE PRODUCT DESCRIBED,
WITH ITS HARDWARE, SOFTWARE AND FIRMWARE, IS PROVIDED “AS IS,” WITH ALL
FAULTS AND ERRORS, AND THERMOTEKNIX MAKES NO WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION, MERCHANTABILITY, SATISFACTORY
QUALITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD
PARTY. IN NO EVENT WILL THERMOTEKNIX, ITS DIRECTORS, OFFICERS, EMPLOYEES,
OR AGENTS BE LIABLE TO YOU FOR ANY SPECIAL, CONSEQUENTIAL, INCIDENTAL, OR
INDIRECT DAMAGES, INCLUDING, AMONG OTHERS, DAMAGES FOR LOSS OF BUSINESS
PROFITS, BUSINESS INTERRUPTION, OR LOSS OF DATA OR DOCUMENTATION, IN
CONNECTION WITH THE USE OF THIS PRODUCT, EVEN IF THERMOTEKNIX HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. REGARDING TO THE PRODUCT WITH
INTERNET ACCESS, THE USE OF PRODUCT SHALL BE WHOLLY AT YOUR OWN RISKS.
THERMOTEKNIX SHALL NOT TAKE ANY RESPONSIBILITIES FOR ABNORMAL OPERATION,
PRIVACY LEAKAGE OR OTHER DAMAGES RESULTING FROM CYBER ATTACK, HACKER
ATTACK, VIRUS INSPECTION, OR OTHER INTERNET SECURITY RISKS; HOWEVER,
THERMOTEKNIX WILL PROVIDE TIMELY TECHNICAL SUPPORT IF REQUIRED.
SURVEILLANCE LAWS VARY BY JURISDICTION. PLEASE CHECK ALL RELEVANT LAWS IN
YOUR JURISDICTION BEFORE USING THIS PRODUCT IN ORDER TO ENSURE THAT YOUR
USE CONFORMS TO THE APPLICABLE LAW. THERMOTEKNIX SHALL NOT BE LIABLE IN
THE EVENT THAT THIS PRODUCT IS USED FOR ILLEGITIMATE PURPOSES. IN THE EVENT
OF ANY CONFLICTS BETWEEN THIS MANUAL AND THE APPLICABLE LAW, THE LATTER
PREVAILS.
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© Thermoteknix Systems Ltd 2023
Regulatory Information
1. FevIR Scan 2 skin temperature measurement system lacks FDA clearance,
approval or authorization.
2. Skin temperature measurement from the FevIR Scan 2 skin temperature
measurement system should not be solely or primarily relied upon to diagnose
or exclude a diagnosis of COVID-19, or any other disease.
3. Elevated body temperature in the context of use should be confirmed with
secondary evaluation methods (e.g., a non contact infrared thermometer
(NCIT) or clinical grade contact thermometer).
4. Public health officials, through their experience with the device in the
particular environment of use, should determine the significance of any fever
or elevated temperature based on the skin telethermographic temperature
measurement.
5. The technology should only be used to view and measure the temperature of
one person at a time directly facing the camera.
6. Visible thermal patterns are only intended for locating the points from which
to extract the thermal measurement.
7. For use instructions, device performance specifications and the methodology,
and frequency of any calibration needed to maintain the labelled specifications
please refer to the documentation and labelling supplied with the system.
8. The equipment should be used with the Blackbody reference source supplied
with the system. This is used to compensate for thermal drift and is vital to
obtain an accurate temperature measurement.
9. Automatic face detection software will identify the region of interest for
temperature measurement (typically the inner canthus (inner angle of the eye
socket)). Software compensation is available to correlate with oral, otic,
temple temperature.
10. The system should be set up in accordance with the directions provided in this
Manual with particular regard to environmental factors such as screening
background, ambient temperature and humidity, and airflow and camera and
blackbody temperature reference location within the field of view.
11. It is important that subjects are provided with sufficient time to equilibrate to
the environment where scanning is performed, particularly following entry from
external extremes of environmental temperature.
12. FevIR Scan 2 skin temperature measurement system must be operated in
accordance with ISO/TR 13154: 2017: Medical electrical equipment —
Deployment, implementation and operational guidelines for identifying febrile
humans using a screening thermograph. See IMPORTANT NOTICE on page 13.
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Labelling Description Reference.
QSG = Quick Start Guide
Ref
Description
Section
1
Device performance specifications and the methodology and
frequency of any calibration needed to maintain the labelled
specifications.
4.2, 11,
16.1.1
2
How to use the thermal image to make a temperature
measurement to within the stated device accuracy
1, 2, 4.3
and QSG
3
A description and purpose of the blackbody reference source
(used for thermal drift compensation) and its importance in
obtaining an accurate temperature assessment.
1, 6 and
QSG
4
The reference body site used for temperature estimation,
including any calibration or correction needed to estimate the
temperature at that location, and the accuracy of the
measurement at the reference site (e.g., oral, tympanic
membrane).
1, 2, 4.3,
7.1, 8.1.1,
16.1.1
5
How different environmental and system setup factors can
affect the measurement, including the body site chosen for
measurement, the condition of the screening site (e.g.,
screening background, ambient temperature and humidity,
airflow).
2, 5, 7.1
and ISO
standards
2.1
6
Different factors to consider in the design of the facility
protocol (e.g., installation, viewing angle, blackbody
temperature reference source).
5, ISO
standards
2.1 and
QSG
7
The installation procedures and qualification testing that
should be performed during installation or when imaging
equipment is being relocated.
1, 2, 5 and
QSG
8
The appropriate imaging distance based on the spatial
resolution and performance of the camera.
2, 16.1.1
and QSG
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FCC Information
Please take attention that changes or modification not expressly approved by the
party responsible for compliance could void the user’s authority to operate
the equipment.
FCC Compliance: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at their own expense.
FCC Conditions
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:
•This device may not cause harmful interference.
•This device must accept any interference received, including interference that may
cause undesired operation.
EU Conformity Statement
This product and - if applicable - the supplied accessories too are marked
with "CE" and comply therefore with the applicable harmonized European
standards listed under the EMC Directive
2014/30/EU, the RoHS Directive 2011/65/EU.
2012/19/EU (WEEE directive): Products marked with this symbol cannot be
disposed of as unsorted municipal waste in the European Union. For proper
recycling, return this product to your local supplier upon the purchase of
equivalent new equipment, or dispose of it at designated collection
points. For more information see: www.recyclethis.info
2006/66/EC (battery directive): This product contains a battery that
cannot be disposed of as unsorted municipal waste in the European Union.
See the product documentation for specific battery information. The
battery is marked with this symbol, which may include lettering to
indicate cadmium (Cd), lead (Pb), or mercury (Hg). For proper recycling,
return the battery to your supplier or to a designated collection point. For
more information see: www.recyclethis.info
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© Thermoteknix Systems Ltd 2023
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description
WARNING
Indicates a hazardous situation which, if not avoided, will or could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
could result in equipment damage, data loss, performance
degradation, or unexpected results.
NOTE
Provides additional information to emphasize or supplement
important points of the main text.
Safety Instructions
These instructions are intended to ensure that user can use the product correctly to
avoid danger or property loss.
Laws and Regulations
- Use of the product must be in strict compliance with the local electrical safety
regulations.
Transportation and Storage
-Keep the device in original or similar packaging while transporting it.
-Keep all wrappers after unpacking them for future use. In case of any failure
occurred, you need to return the device to the factory with the original
wrapper. Transportation without the original wrapper may result in damage
on the device and the company shall not take any responsibilities.
-Do not drop the product or subject it to physical shock. Keep the device away
from magnetic interference.
-Storage and transportation environmental conditions; 0-50°C (32-122°F),
relative humidity <90% and atmospheric pressure 700-1100 millibars (mbar).
Power Supply
-Only use the power adapters which are provided with the system.
-To avoid the risk of electric shock, this equipment must only be connected to
a supply mains with protective earth.
-Make sure the plug is properly connected to the power socket.
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© Thermoteknix Systems Ltd 2023
-DO NOT connect multiple devices to one power adapter, to avoid over-heating
or fire hazards caused by overload.
Battery
-Improper use or replacement of the battery may result in explosion hazard.
Replace with the same or equivalent type only. Dispose of used batteries in
conformance with the instructions provided by the battery manufacturer.
-Do not charge other battery types with the supplied charger. Confirm there
is no flammable material within 2 m of the charger during charging.
-For long-term storage of the battery, make sure it is fully charged every half
year to ensure the battery quality. Otherwise, damage may occur.
-DO NOT place the battery near heating or fire source. Avoid direct sunlight.
-DO NOT swallow the battery to avoid poisoning and chemical burns.
-DO NOT place the battery in the reach of children.
Operating Environment
-The system must only be operated indoors.
-DO NOT expose the system to extremely hot, cold, dusty, corrosive, saline-
alkali, or damp environments. Make sure the running environment meets the
requirement of the device. An environmental temperature between 20-24°C
(68-75°F), relative humidity between 10-50% and atmospheric pressure
between 700-1100 mbar are recommended for optimum system performance.
-This system can only be safely used in the region below 3000 meters above
the sea level.
-Avoid equipment installation on vibratory surface or places subject to shock
(neglect may cause equipment damage).
-DO NOT aim the lens of the camera at the sun or any other bright light.
-DO NOT position the system so that access to disconnection of the power
supplies is impeded.
Maintenance
-If the product does not work properly, please contact your point of sale or
Thermoteknix. Thermoteknix shall not assume any responsibility for problems
caused by unauthorized repair or maintenance.
-Any unauthorised modification to the system will void the warranty and risks
personal injury.
-The system requires annual recalibration, please contact Thermoteknix to
arrange service.
Emergency
-If smoke, odour, or noise are emitted from the device, immediately turn off
the power, unplug the power cable, and contact Thermoteknix.
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Table of Contents
1 FevIR Scan 2 product information............................................................................. 12
2 IMPORTANT NOTICE .................................................................................................. 13
2.1 INDICATIONS FOR USE ..................................................................................... 14
3 Terminology .............................................................................................................. 15
4 Introduction .............................................................................................................. 16
4.1 Package checklist ............................................................................................. 16
4.2 FevIR Camera technology ................................................................................ 17
4.3 Skin temperature measurement...................................................................... 18
5 Site installation .......................................................................................................... 20
6 System setup.............................................................................................................. 22
6.1 Introduction to the FevIR Scan software.......................................................... 23
6.1.1
Temperature palette bar...................................................................... 24
6.1.2
System status ....................................................................................... 24
6.1.3
Operator or Setup mode...................................................................... 25
6.1.4
“Skin Temperature” or “Core Temperature” measurement................ 26
6.1.5
System status when alarm enabled ..................................................... 26
6.1.6
Gallery.................................................................................................. 27
6.2 Setup mode...................................................................................................... 29
6.3 Password.......................................................................................................... 30
7 Defining the screen parameters................................................................................ 32
7.1 Defining the ThermaRef measurement tool.................................................... 32
7.1.1 Example ThermaRef measurement tool alignment........................................ 33
7.2 Defining the scanning area............................................................................... 34
7.3 Aligning visible camera with the thermal image (“ImageAlignment” F2)........ 34
8 Setup menu .............................................................................................................. 37
8.1 Measurement tab ............................................................................................ 37
8.1.1
Temperature Mode.............................................................................. 38
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8.1.2
Detection Mode ................................................................................... 38
8.1.2.1
Background Scanning ........................................................................... 38
8.1.2.2
Maximum Face Detection Range ......................................................... 38
8.1.2.3
Face Detection Sensitivity .................................................................... 39
8.1.3
Temperature Offset.............................................................................. 39
8.2 Alarm tab.......................................................................................................... 40
8.2.1
Tracking Temperature.......................................................................... 40
8.2.2
Alarm Temperature.............................................................................. 41
8.2.3
Upper Temperature Limit .................................................................... 41
8.2.4
Alarm On/Off delay and Timed Save.................................................... 41
8.2.5
Auto System Monitor........................................................................... 42
8.2.6
Alarm Sound File .................................................................................. 42
8.2.7
On-Screen Alarm Message................................................................... 42
8.3 Mask tab........................................................................................................... 43
8.3.1
Mask detection..................................................................................... 43
8.3.2
Glasses detection ................................................................................. 44
8.4 Recording tab................................................................................................... 44
8.4.1
Save Data on Alarm.............................................................................. 44
8.4.2
Saved Images Folder............................................................................. 45
8.4.3
Saved Image Deletion Policy ................................................................ 45
8.4.4
Enhanced privacy ................................................................................. 45
8.4.5
CSV Alarm Data .................................................................................... 46
8.5 Display tab........................................................................................................ 48
8.5.1
Camera Location .................................................................................. 49
8.5.2
Units..................................................................................................... 49
8.5.3
Layout................................................................................................... 49
8.5.4
Palette.................................................................................................. 50
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8.5.5
Tracking Colour .................................................................................... 50
8.5.6
Large Alarm Text .................................................................................. 50
8.5.7
Hide Temperature Values on Display................................................... 50
8.5.8
Hide Alarm Threshold on Display......................................................... 50
8.5.9
Hide Saved Images on Display.............................................................. 50
8.6 Second Display tab........................................................................................... 51
8.7 Reference tab................................................................................................... 52
8.8 Camera tab....................................................................................................... 53
9 Fault finding .............................................................................................................. 54
9.1 Thermal image blank........................................................................................ 54
9.2 Continuous system warning alarm................................................................... 54
9.3 Thermal reflections.......................................................................................... 54
9.4 Default values (in core mode).......................................................................... 54
10 Shortcuts .............................................................................................................. 55
11 Calibration .............................................................................................................. 56
12 Software installation................................................................................................ 57
12.1 Installing FevIR Scan software.......................................................................... 57
13 Optional items.......................................................................................................... 61
13.1 FevIR Scan Email on Alarm - GC010007 ........................................................... 61
13.1.1
Introduction ......................................................................................... 61
13.1.2
Installation ........................................................................................... 61
13.1.3
“FevIR Emailer Client” user interface................................................... 63
14 Disposal .............................................................................................................. 66
15 Support .............................................................................................................. 67
16 Appendices .............................................................................................................. 68
16.1.1 FevIR Scan 2 Specification ............................................................................ 69
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© Thermoteknix Systems Ltd 2023
1FevIR Scan 2 product information
FevIR Scan 2 is a telethermography system intended to perform initial skin temperature
measurement of any part of the body for triage use. The system is able to measure the
skin temperature of the face and in particular, the temperature of the inner canthus
of the eye, or forehead which correlate with, but are typically 1°C (1.6°F) below body
core temperature. The detection of an elevated body temperature measurement must
be confirmed by the use of a secondary evaluation method (e.g. clinical grade contact
thermometer).
A normal skin temperature can occur in the presence of a fever (raised core
temperature) and conversely, a raised skin temperature can occur in the absence
of a fever. Absence of a raised skin temperature does not exclude a raised core
temperature (fever).
A statement of measurement accuracy and calibration are included with each camera
and thermal reference unit.
The temperature measurement uncertainty (accuracy), is less than 0.2°C (0.36°F)
between the temperature range of 34-39°C (93.2-102.2°F).
An accurate, calibrated ThermaRef blackbody temperature reference, traceable to UK
National Physical Laboratory (NPL), is included with each system to ensure accuracy
of measurement and correction/compensation of any system drift. It must be installed
in direct line of sight and in the same horizontal plane with the camera, visible within
the thermal image at all times, equidistant to the subject inspection point and set to
a temperature of 35°C on its controller. The ThermaRef is continually monitored
during system operation, see section 6.
The FevIR Camera and ThermaRef should be left for 15 minutes after power on to
enable both units to stabilise before use. Both stability and drift are less than 0.2°C
(0.36°F) within an 8-hour time frame as measured and tested by Thermoteknix Systems
Ltd.
The FevIR Camera and ThermaRef have been tested and certified to CE and FCC
certification including electrical safety and the Low Voltage directive.
The system is supplied with FevIR Scan software installed on a laptop computer. The
software should be operated in accordance with the guidance in this manual.
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2IMPORTANT NOTICE
Temperature measurements made using the FevIR Scan system should not be solely or
primarily relied upon to diagnose or exclude a diagnosis of COVID-19 or any other
disease. An elevated body (core) temperature in the context of use must be confirmed
by a suitably trained person with secondary evaluation methods (e.g. a clinical grade
contact thermometer). FevIR Scan is for adjunctive use only.
The system must only be operated by personnel trained properly to operate the system
and to ensure the environment the system is operated is in accordance with guidance
to increase accuracy.
Operation of the system must only be carried out with the ThermaRef correctly
installed and placed at the same distance from the camera as the subject inspection
point to comply with system accuracy and performance. The inspection point is
recommended to be between 1-3m (3.2-9.5ft) from the camera, based on the spatial
resolution and performance of the camera. The system self-check and continuous self-
test will show a “System Not Ready” on screen message and a warning triangle which
will prevent system operation if the ThermaRef is not present, operational or within
the field of view. Only one person at a time should be presented to the camera at the
inspection point.
The FevIR Scan system has an automatically operated, self-calibrating, Non-Uniformity
Correction (NUC) calibration shutter fitted in front of the thermal lens which, is
immediately inside the front face of the camera. Do not insert any object into this
opening or attempt to interfere with the operation of the shutter. Any interference
to the operation of the shutter may cause permanent damage to the unit and render
the Manufacturer’s Warranty invalid.
The FevIR Camera and the ThermaRef must be recalibrated annually from the last date
of calibration. This date is shown on the certificates supplied with the
equipment. Please contact Thermoteknix for assistance.
The equipment must be set up for subject inspection in a temperature controlled
indoor environment. The location should be free from draughts, heater or air
conditioning ducts, reflective surfaces, direct sunlight and away from doorways. An
environmental temperature between 20-24°C (68-75°F), relative humidity between
10-50% and atmospheric pressure between 700-1100 millibars (mbar) are
recommended for optimum system performance.
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NOTE: these guidelines are in accordance with ISO Standards
BS (EN) IEC 80601-2-59:2019
“Safety an essential performance of screening thermographs for human febrile
temperature screening.”
Users should operate the system in accordance with the operating guidelines to
maintain full ISO compliance. These guidelines are given in:
PD ISO/TR 13154:2017
“Deployment, implementation and operational guidelines for identifying febrile
humans using a screening thermograph.”
Instructions for arranging the FevIR Camera, ThermaRef and screening distance are
detailed in this manual and should be observed. It is important that the subject
screening point is aligned with the location of the ThermaRef blackbody to ensure both
are at the same distance from the camera (1–3m, 3.2–9.5ft).
In the event that the equipment must be moved from one location to another, close
down the software on the computer first, then power off each item individually, dis-
connect all cables and return them safely to the heavy-duty transport case provided
with the system. When relocating the system, the new installation and procedure must
be carried out as per section 5.
2.1 INDICATIONS FOR USE
The FevIR Scan Series IR Camera(s), which provides capture of skin surface
temperature of any part of the body, and the FevIR Scan software which provides
visualization and reporting functionalities, are intended for use as an adjunct to other
clinical diagnostic procedures in the diagnosis, quantifying, and screening of absolute
and relative skin surface temperature.
System is applicable for ambulatory, adult subjects.
The environment of use is: public areas i.e. airport, foyers, places of employment and
education.
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3Terminology
The FevIR Scan system employs two key components:
•FevIR Scan Camera FSD01; MC031843: referred to throughout this manual as
the “FevIR Camera”.
•ThermaRef Blackbody 35B1; MC031856: referred to throughout this manual
as the “ThermaRef”.
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4Introduction
4.1 Package checklist
You need to make sure that you have everything for your FevIR Scan system.
Check that you have:
1. FevIR Scan Camera FSD01, MC031843 (inc. visible & thermal) with power
supply
2. USB cables (2m)
3. ThermaRef Blackbody 35B1 MC031856 with power supply
4. FevIR Scan software and manual on USB stick
Optional items:
1. Laptop
2. Tripods for FevIR Camera and ThermaRef
3. Ceiling mounts for FevIR Camera and ThermaRef
4. Customer supplied second HDMI monitor
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4.2 FevIR Camera technology
Thermoteknix FevIR Scan systems are able to deliver an improved accuracy of ±0.2°C.
This is accomplished by using a highly accurate blackbody temperature calibration
reference source, the ThermaRef, permanently positioned within the field of view of
the system camera.
When used in isolation, thermal measuring devices are extremely sensitive to
difference in temperature, but even the very best are only accurate to ±2°C. This
relatively low level of accuracy makes most devices wholly unsuitable for fever
screening applications. Thermoteknix FevIR Scan systems are able to deliver an
improved accuracy of ±0.2°C. This is accomplished by using a highly accurate
temperature calibration reference source, the ThermaRef, permanently positioned
within the field of view of the system camera. The ThermaRef emits a highly accurate
and stable reference temperature of 35°C allowing the rest of the system to
continually adjust to maintain accuracy. The level of accuracy achieved is such that it
can highlight very small changes in skin temperature, making it essential as a fever
screening tool. The ThermaRef is therefore an integral part of the screening system.
As such, FevIR Scan software constantly monitors the relationship between the
ThermaRef and the FevIR Camera. If the system becomes misaligned or some other
issue is detected that could affect accuracy the system is inhibited (and a warning
displayed) until the issue is resolved.
The Thermoteknix FevIR Scan software does not allow the system to be operated
without the ThermaRef in the field of view at all times and with the ThermaRef
measurement tool (yellow circle) correctly in position over the centre of the
ThermaRef.
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4.3 Skin temperature measurement
The detector in the thermal imager is sensitive to infrared radiation. Everything in the
world radiates infrared according to natural laws and in proportion to temperature and
emissivity. The emissivity is a measure of a body's radiation efficiency and is strongly
influenced by surface texture. The detector measures the radiation after it has passed
through the atmosphere and the FevIR Camera’s objective lens. Both of these
attenuate the signal and affect the efficiency of detecting the radiation. This affects
the system's ability to measure temperature remotely.
Your thermal imager is based on the latest microbolometer technology. All thermal
imagers in this class exhibit a degree of “pixel to pixel drift”. This must be corrected
using an internal paddle with an even (uniform) temperature which is situated in front
of the detector. This is referred to as “Non Uniformity Correction” or “NUC”.
Periodically the paddle is moved for a second or two into its calibration position in
front of the lens and detector and the image will freeze during this period. No thermal
imaging will take place while this occurs. The data obtained during the NUC operation
is used to correct for non-uniformities caused by thermal drift due to the warming of
components inside the FevIR Camera and substantially improves the image quality and
is essential for accurate temperature measurement. You may notice that periodically
the image freezes and you may hear a clicking sound. This is the NUC process operating
automatically.
When the imager is first turned on the NUC process is frequent but as the imager
approaches thermal equilibrium after 10 or 15 minutes then the period between NUCs
extends.
The ThermaRef blackbody reference unit supplied with the FevIR Scan system provides
a constant reference temperature within the scene and is viewed by the FevIR Camera.
It has a known emissivity and its temperature is controlled very precisely. This is then
used to remove calibration uncertainties and sensor instability to provide excellent
absolute temperature measurement.
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WARNING: do not modify this equipment without authorization of the
manufacturer.
The emissivity of human skin has a value of 0.98 and is not affected by skin colour,
and therefore has little person to person variation. The same is not true for variations
in a person’s skin temperature which is affected by weather, draughts, humidity, food,
alcohol, metabolism and many individual factors throughout the day.
A person’s core body temperature, in health, is much more stable and less affected by
those factors and is used to identify the presence or absence of fever. While the normal
variation in skin temperature can be as much as 10°C, normal core temperature
typically varies by less than 2°C. Febrile conditions lead to an elevated core
temperature. However, slight elevations in core temperature in one person may
correspond to normal temperature in another. It should also be noted that cosmetics
affect skin temperature measurement as does sweating which both lower the measured
temperature value.
Accordingly, non-contact thermography using an infrared camera cannot guarantee
that subjects detected with raised skin temperatures will have a fever (raised internal
body/core temperature) nor that subjects with a fever will have a raised skin
temperature.
This means that the system is a triage tool for remotely sensing surface skin
temperature and temperature patterns. It is not a medical instrument and it is not a
diagnostic tool for identifying the presence or incubation of any disease.
Operators should use FevIR Scan as an aid for selecting people for additional monitoring
where febrile conditions can be confirmed or excluded by a trained/qualified person
using a clinically approved thermometer.
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CAUTION: DO NOT position the system so that access to disconnection of
the power supplies is impeded.
NOTE: subjects should be requested to remove hats, headgear and
eyewear before proceeding through the checkpoint.
5Site installation
Decide where you want to perform fever monitoring. You need to choose a place where
your subjects can be directed to pass through the FevIR Camera field of view. It should
be possible to move subjects identified by FevIR Camera who have triggered an alarm
from the primary scanning zone to a private area for confirmation of core temperature
by measurement by a trained person with a clinically approved thermometer and
access to possible isolation.
The inspection site should be free of draughts, direct sunlight, or radiation from
adjacent hot or cold surfaces. If vents or air conditioning outlets are nearby they
should be screened by suitable non-reflective material. Glass will reflect thermal
radiation so this should be covered with a non-reflective cloth. Ambient temperature
should be maintained at a uniform temperature of 20-24°C (68-75°F), a relative
humidity between 10-50% and in regions below 3000 meters above the sea level (700 -
1100 mbar). This is to avoid sudden changes of ambient conditions which can cause
sweating or cutaneous vasodilation/vasoconstriction which affect skin temperature
and uniformity.
The inspection site should be at a reasonable distance from the exterior of the building
to avoid sudden changes in ambient temperature for subjects entering from a hot
environment to a cold one or vice versa as this causes rapid changes in blood flow and
changes in skin temperature.
Ropes or gating should be used to keep subjects within the primary scanning zone.
Subjects should approach the monitoring point in single file and inspected individually
as they face the camera, pausing momentarily for the operative to confirm the absence
of an alarm temperature.
Other manuals for FevIR Scan 2
1
Table of contents
