This document discusses thermometers, including their structure, types, and uses. It describes several types of thermometers including liquid-in-glass, gas, bimetal, and digital thermometers. Digital thermometers are highlighted as the most accurate for measuring body temperature. The document explains how to use a digital thermometer, noting the basic steps of turning it on, placing the probe in the appropriate body area, and reading the temperature once it stabilizes. Features, precautions, cleaning, advantages, and applications of thermometers are also summarized.

1. THERMOMETER

2. Contents
▪ What is Thermometer
▪ Types of Thermometer
▪ Structure of Digital Thermometer
▪ Working of Thermometer
▪ How to use Digital Thermometer
▪ Features
▪ Precautions
▪ How to clean and store Thermometer
▪ Advantages
▪ Applications

3. What is Thermometer
A thermometer is an indispensable element of
every home medicine cabinet. Measuring body
temperature correctly greatly facilitates
differential diagnoses and is a guide to take
antipyretics.

4. Types of Thermometer
1. Manometric: It determines the temperature based on the
change of pressure in a gas or liquid.
2. Liquid-in-glass
3. Gas: This type determines the temperature based on the
difference in pressure or volume of the gas it is filled with.

5. .
4. Bimetal (bimetallic): The strip is sensitive to change in temperature,
and it causes mechanical displacement, which is used to determine the
temperature.
5. Digital: A digital thermometer has a thermistor that reacts to the
change in temperature and projects the result on the device's screen.
6. Infrared: An infrared thermometer uses thermal radiation
that objects emit to measure temperature. This means that they
can tell temperature from a distance.

6. Type of Thermometer we should
use to measure the Temperature
Digital Thermometers:
Digital thermometers
are the most accurate
way to measure
body temperature.

7. Structure of Digital
Thermometer

9. Working of Thermometer

10. How to Use a Digital
Thermometer
1. Disinfect the probe with isopropyl (rubbing) alcohol before using.
2. Depress the on/off button. The display will read
3. Release the power switch and the display will show L°F(or L°C) with °F(°C) flashing.
4. Place the probe in the appropriate position (oral, axillary or rectal).
5. Once the degree sign °F(°C) on the display has stopped flashing (usually within 30 seconds ) , the
correct temperature is indicated. The temperature reading will not change after the °F(°C) stops
flashing.
6. The unit will automatically turn off in 3 minutes (approx. ). However, to prolong battery life, it is best
to turn off the thermometer once the temperature has been noted.

11. Features
1. Easy to read digital LCD (liquid crystal display).
2. Compact, accurate and durable LSI (large scale integration) device.
3. Temperatures can be taken under the tongue (oral use) or under the arm (axillary use). It is
suggested that rectal temperatures be taken on infants only when axillary use is inconvenient.
4. Very sensitive device, quick to obtain results. Reads in around 30 seconds.
5. If the thermometer is inadvertently left on after temperature stabilization, it will automatically
shut off in about 3 minutes.
6. Small, light weight unit. Universal use for the whole family, especially ideal for children.
7. ABS resin body presents no hazard compared to broken mercury glass thermometers.

12. Precautions
1. Do not boil the probe . Instead , clean the unit by wiping it with a dry cloth and disinfect the probe with isopropyl (rubbing ) alcohol
2. Do not drop the thermometer or expose it to heavy shock. The unit is not shock-proof .
3. Do not bend or bite the probe. Do not store the unit under direct sunlight, at a high temperature , in high humidity or dust.
Performance may be degraded.
4. Stop using the thermometer if it operates erratically or if the display malfunctions .
5. Keep out of reach of children. Clean the thermometer probe before storing.
6. Do not attempt to disassemble the unit except to replace the battery.
7. If the thermometer has been stored at below-freezing temperatures, allow the thermometer to warm naturally to room temperature
before using.
8. Performance of the device may be degraded if: Operated or stored outside stated temperature and humidity ranges or if the patient’s
temperature is below the ambient (room) temperature.

13. How to clean and Store
the Thermometer
To clean the thermometer, wash the tip with a solution of mild detergent and cool
water. Disinfect the thermometer by wiping the sensor and lower stem with a cloth dipped
in a household antiseptic solution such as rubbing alcohol.

14. Advantages
1 . Accuracy
2 . Speed
3 . Safety
4 . Strong

15. Applications
1 . Medical Applications
2 . Marine Applications
3 . Industrial Applications

16. THANK YOU!