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Measurement table (in °C):
Measurement site
Designation Ear / forehead Anus Mouth / armpit
Subnormal temperature < 35.7 < 36.2 < 35.8
Normal temperature 35.8 – 36.9 36.3 – 37.4 35.9 – 37.0
Elevated temperature 37.0 – 37.5 37.5 – 38.0 37.1 – 37.5
Slight fever 37.6 – 38.0 38.1 – 38.5 37.6 – 38.0
Moderate fever 38.1 – 38.5 38.6 – 39.0 38.1 – 38.5
High fever 38.6 – 39.4 39.1 – 39.9 38.6 – 39.5
Very high fever 39.5 – 42.0 40.0 – 42.5 39.6 – 42.0
5. Safety precautions
䊏 This device may be used only for the measurement of human body temperature in the ear and on
the forehead. The manufacturer shall not be held liable for any damage resulting from improper
handling.
䊏 Do not leave the device unattended near toddlers or persons who cannot operate it themselves.
䊏 Do not expose the device to hard knocks or vibrations. Do not use the device, if you notice any
kind of damage.
䊏 Prior to every measurement, please check whether the measuring sensor is clean and unscratched.
䊏 Please observe the storage and operating conditions mentioned in Chapter “Technical data”.
Protect the device against dirt and dust, extreme temperatures, solar radiation and fluids.
䊏 For cleaning, please follow the instructions mentioned in Chapter “Cleaning and maintenance of
the device”.
䊏 The device must not be altered, dismantled or repaired by the user.
䊏 The use does not replace medical treatment in any way.
䊏 If you inform your doctor about the temperature measured, please also mention that this
temperature has been determined in the ear or on the forehead.
6. Initial operation of the device
Batteries are included in the scope of delivery and have been placed in the device already. However,
a contact strip interrupts the contact of the batteries to the device and thus guarantees the full
battery capacity prior to the first use of the thermometer. Please carefully pull out the contact strip
from the closed lid of the battery compartment. Subsequently the Thermoval duo scan is ready for
operation.
7. Measurement of the body temperature
Thermoval duo scan measures the temperature on the forehead as well as in the ear. Both types of
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2. Introduction
Dear Customer, we are pleased that you have decided to purchase a clinical thermometer from
HARTMANN. Thermoval duo scan is a quality product for measuring the human body temperature in
the ear and on the forehead. It is ideally suited for measurements on children as from 6 months of
age, but the thermometer can be used also on adults. Given correct application, the device ensures
a fast and precise measurement of the body temperature in a very comfortable manner. We wish you
all the best for your health.
3. Benefits of the thermometer
Two measuring methods: Ear and forehead measurement
Thermoval duo scan measures the temperature in the ear and on the forehead. Depending on your
individual preference, you can choose between these two modes. The device recognizes automatic-
ally whether an ear measurement or forehead measurement is carried out.
High measuring accuracy ensured by the latest measuring sensor technology
The latest generation of the measuring sensors guarantees a very high measuring accuracy in ear
and forehead measurements.
Quick measurement ensured by infrared technology
The measuring sensor picks up the infrared radiation emitted by the eardrum and/or the surface of
the forehead and displays the measuring result within a second (three seconds in case of forehead
measurement).
Easy to use
The device is very easy and safe to use having been provided with two buttons only. The O/I button is
used to switch the device on (or off), and the SCAN button starts the measurement. In addition, the
illustrations on the storage box explain how to carry out the measurements correctly.
Robust and reliable use ensured by high quality manufacturing
This device has been developed on the basis of the strict HARTMANN quality guidelines. Geared to
the customer requirements, it fulfils the highest standards in stability.
4. General information on body temperature
The human body adjusts the body temperature to a setpoint value – it varies up to 1 °C throughout
the day. In addition, the temperature in the body (core temperature) and the surface temperature of
the skin show different temperatures. For this reason, there is no “normal” body temperature – it
always depends on the measurement site. Here as well, the body temperature is influenced by the
ambient temperature, age, stress, duration of sleep, hormones and physical activity.
Whilst glass thermometers and digital thermometers measure the temperature of the human body
directly, thermometers using ear and forehead measurement determine the core temperature through
the infrared radiation of the body. This measurement may slightly deviate from the temperature of
rectal, oral or axillary measurements using digital thermometers.
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