Volume 04 Issue 08-2024
64
American Journal Of Philological Sciences
(ISSN
–
2771-2273)
VOLUME
04
ISSUE
08
P
AGES
:
64-68
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
This article discusses the concept of infrared medical thermometers used in medicine and their use.
KEYWORDS
Thermometer, liquid, gas, electronic and infrared medical thermometer.
INTRODUCTION
Thermometer (thermo... - hot and meter) - a device for
measuring temperature. Its purpose is based on the
temperature dependence of the expansion of
substances, electrical resistance, gas pressure, etc.
There are liquid, gas and resistance thermometers. The
simplest of them are liquid thermometers, which
mainly consist of a reservoir, a tube and a scale. The
reservoir is filled with a liquid such as mercury. As the
temperature increases, the mercury in the reservoir
expands and the mercury in the tube connected to it
rises. The higher the temperature, the more the
mercury expands and the higher it rises through the
tube. For example: - when measuring temperatures
from 35° to 750°, thermometers filled with mercury
(from - 80° to 170° - ethyl alcohol, from -200° to 20° -
pentane, - from 20° to 300° - kerosene) are used. Liquid
thermometers are used in life, medicine and
meteorology.
In science and technology, gas thermometers are used
to measure temperatures from 269° to 1063°. These
thermometers consist of a container filled with a gas
(helium at low temperatures and nitrogen at high
Research Article
THERMOMETERS USED IN MEDICINE AND RULES FOR THEIR USE
Submission Date:
Aug 17, 2024,
Accepted Date:
Aug 22, 2024,
Published Date:
Aug 27, 2024
Crossref doi
https://doi.org/10.37547/ajps/Volume04Issue08-10
Akhmedova Setora Askar's daughter
KarIEE MSS-222-22 group student, Uzbekistan
Journal
Website:
https://theusajournals.
com/index.php/ajps
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 04 Issue 08-2024
65
American Journal Of Philological Sciences
(ISSN
–
2771-2273)
VOLUME
04
ISSUE
08
P
AGES
:
64-68
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
temperatures), a precise mercury manometer, and the
temperature is determined by changes in the volume
or pressure of the gas. In industry, a manometric
thermometer is often used to measure temperatures
from 60° to 550°. This thermometer consists of a
cylinder filled with gas (nitrogen), butane (ethyl
chloride) or liquid (mercury) and a hermetic system
consisting of a capillary and spring manometer. As the
temperature changes, the pressure in the system
changes, the spring is deformed, and as a result, it
moves along the scale. Resistance thermometers
based on the dependence of electrical resistance and
thermocouples based on the dependence of
thermoelectric driving force are also widely used in
science and technology. Such thermometers consist of
a capillary that can measure temperatures from 200° to
500°.
With the development of science and technology,
many types of new thermometers have appeared. The
electronic thermometer shows the div temperature
in digital form using the exact relationship between the
physical parameters of some substances (resistance,
voltage, current, etc.) and the ambient temperature.
Easy to read and easy to carry. Its disadvantage is that
the accuracy of the indicator is affected by factors such
as electronic components and battery power supply,
which is not as good as a glass thermometer.
Electronic thermometer consists of temperature
sensor, liquid crystal display, button battery, special
integrated circuit and other electronic components. It
can measure human div temperature quickly and
accurately. Compared with the traditional mercury
glass thermometer, it has the advantages of
convenient reading, short measurement time, high
measurement accuracy, memory and sound alarm. The
electronic thermometer does not contain mercury,
which is harmless to the human div and the
environment. It is especially suitable for families,
hospitals and other occasions.
Although people are already used to using a modern
device, people are still interested in how infrared
thermometers work and the requirements for their
correct use.
Three types of mercury, electronic and infrared
medical thermometers are used to measure human
div temperature. Until that time, our people used
more mercury, electronic thermometer. But due to the
spread of the coronavirus infection, the demand for
infrared thermometers has increased. The fact is that
infrared medical thermometers can measure the
temperature of several patients in a short period of
time, in addition to quickly determining the
temperature of the human div from a distance. This
is useful in organizations where many people work, in
public places.
These thermometers are designed for remote
measurement of the surface temperature of the
Volume 04 Issue 08-2024
66
American Journal Of Philological Sciences
(ISSN
–
2771-2273)
VOLUME
04
ISSUE
08
P
AGES
:
64-68
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
human div and solid objects. Therefore, it is used in
industry and healthcare. But industrial thermometers
cannot be used to measure human div temperature.
The correct use of each measuring tool is directly
proportional to obtaining an accurate and reliable
measurement result. Here, let's talk about the
measuring tool. According to Article 3 of the Law of the
Republic of Uzbekistan "On Metrology", a measuring
instrument is a technical instrument used for
measurements and having standardized metrological
characteristics, according to which an infrared medical
thermometer is also a measuring instrument is
considered (figure 1).
Figure 1. Infrared medical thermometer
In order to use the device correctly, several aspects
should be taken into account. First of all, familiarize
yourself with the instructions for use of the
thermometer. It is also important to consider the range
and error of each thermometer. When using infrared
thermometers intended for use in the health sector,
first of all, it is necessary to make sure that it has passed
the state metrology inspection, more precisely, to
check the presence of a certificate of conformity.
Until now, this type of thermometer was mainly used
in pediatrics - when it is necessary to measure the
child's div temperature. That is, since the child
cannot hold the traditional thermometer for 5-7
minutes, this method is useful. When using an infrared
thermometer, it should be directed to the top of the
ear, forehead or temple.
The principle of operation of the device is based on
measuring the amplitude of electromagnetic radiation
from an object in the infrared part of the spectrum and
then converting the measured value into heat radiation
power. The thermal radiation directed by the optical
system is transmitted to the sensor transducer and an
Volume 04 Issue 08-2024
67
American Journal Of Philological Sciences
(ISSN
–
2771-2273)
VOLUME
04
ISSUE
08
P
AGES
:
64-68
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
electrical signal is generated in proportion to the value
of the measured surface temperature. This signal
passes through an electronic converter to a computer,
and the result is displayed on the display.
It is natural for infrared thermometers to have errors.
Especially if the transmitter is not wiped before use. In
this device, the error occurs because the beam travels
a longer distance than in electronic and mercury
thermometers. Nevertheless, the device has a number
of advantages.
First, the infrared thermometer is also used on sick
people, but the patient does not touch it. That is, since
the measurement process is carried out by another
person, from a certain distance, there is less chance of
virus particles getting into the thermometer. In
addition, the thermometer memory allows you to see
the dynamics of temperature changes. The device
stores 8 - 50 measurements. Some models have signals
that inform you that the measurement is complete. It
is also possible to turn off the alarm and light in order
not to disturb the patient during temperature
measurement. Another plus is that thermometers like
these are color-coded based on temperature.
Often, we witness cases of temperature measurement
by touching the device to the forearm and palm of the
hand, forehead and various other parts of the div. In
most cases, incorrect measurements occur because of
this. After all, in the process of using an infrared
thermometer, it is very important to be able to
correctly choose the distance that corresponds to the
surface of the object to which it is directed. Therefore,
in most infrared medical thermometers, the distance
between the measured object and the thermometer is
required to be in the range of 3÷8 centimeters. Of
course, you can find out from the thermometer's
manual and the instructions on the div of some
infrared thermometers.
As the infrared thermometer moves away from the
object, the measuring surface increases and its error
also changes. It can be compared to pointing a
flashlight at a wall, and the light expands as you move
away from it.
In fact, the infrared thermometer has been widely used
since the outbreak of the coronavirus epidemic in our
country. Since the device is relatively new to us, it is
necessary to make sure that it works properly and
undergo a metrological inspection. According to the
established rules, the implementation of state
metrological inspection and control is mandatory for
all individuals and legal entities that use measuring
instruments in the field. First of all, measuring
instruments used in the fields of health care, veterinary
medicine, and environmental protection should be
subjected to state tests with their type approval. This
ensures that they are usable, safe and work properly.
REFERENCE
Volume 04 Issue 08-2024
68
American Journal Of Philological Sciences
(ISSN
–
2771-2273)
VOLUME
04
ISSUE
08
P
AGES
:
64-68
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
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