Citizen CT830 User Manual

INSTRUCTION MANUAL

for

DIGITAL EAR THERMOMETER

REF CT830

IDENTIFICATION OF PARTS

Probe

Probe Cap "ON/MEM" button

LCD "SCAN" buttonProbe lens

Fig. 1

English

0801

Warning

PLEASE READ THIS MANUAL BEFORE ANY ATTEMPT
TO USE THIS PRODUCT IS MADE.

PRECAUTIONS

The ear thermometer must be inserted correctly to obtain

English

correct temperature measurement.
Be sure to consult a physician if you feel that your health
is in poor condition.
DO NOT judge your health only on the presence or
absence of a fever.

1. Make sure that the probe lens is always clean.

KEEP PROBE LENS CLEAN

GOOD NOT GOOD

2. Very carefully and gently insert the probe into the ear.

3. Avoid using the ear thermometer if there is infl ammation
on or in the ear.

4. DO NOT use the ear thermometer if the main body is
damaged (for example, the probe lens is broken). The
continuous use of a damaged unit may cause injury,
improper results, or serious danger. Contact a physician
immediately if broken pieces are swallowed.

Protect the natural environment:

Please help protect natural environment by respecting
national and/or local recycling regulations when disposing of
the battery and the product at the end of their useful live.

WEEE

If you dispose this product, do not dispose of
with general household waste. There are separate
collection systems for used electronics products
in accordance with legislation under the WEEE
Directive (Directive 2002/96/EC), effective only
within European Union.

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Caution

1. The body temperature measured in the ear may differ
from measurements taken under the armpits, in the
mouth, or in the rectum. Therefore, comparing them will
not be of value. Take temperature readings periodically
to determine the normal ear temperature measurement
with this instrument, then use that reading as the basis
for comparison with any measurement taken when you
suspect a fever.

2. Do NOT use this thermometer for measurements other
than as specifi ed. This thermometer is designed for ear
measurement. Room temperature and material surface
temperature readings are approximate and are only for
reference.

3. Do NOT immerse the ear thermometer in water or any
other liquid and do NOT allow the unit to come into
contact with chemical solvents.

4. Do NOT drop the ear thermometer and do NOT
expose the ear thermometer to heavy shock. The ear
thermometer is not shock-protected.

5. Do NOT bend the ear thermometer.

6. Do NOT disassemble the unit, do NOT make any
modifi cations to it, and do NOT touch the circuitry.

7. Do NOT store the unit under the direct sunlight, do NOT
store it at high temperatures, and do NOT store it in areas
with a high degree of humidity and/or dust.

8. Do NOT boil the probe.

9. Do NOT use the ear thermometer if it operates irregularly
or shows signs of malfunction.

10. Do NOT use thinner or benzene to clean the ear
thermometer.

11. When removing the ear thermometer from storage at low
temperatures, place it in a warm area for 5 to 10 minutes
before use.

12. Keep the ear thermometer out of the reach of children.

13. Wipe the ear thermometer clean before storing.

English

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About Ear Thermometers

All objects radiate heat. To measure body temperature, this
ear thermometer uses an infrared sensor incorporated in
its probe to detect the heat radiated from the eardrum and
the area around it. In general the ear canal (external auditory
canal) of an infant is relatively straight.

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As we grow older, it takes on some curvature, as shown
in Fig. 2. It is important to point the probe lens of the ear
thermometer toward the eardrum and its periphery inside
the ear. To straighten the ear canal, gently pull on the outer
ear in the direction of the rear of the head, as shown in Fig.

3. Each ear canal has a slightly different shape, be sure to
check it before taking temperature readings. Insert the probe
straight into the ear canal, as shown in Fig. 4.

Fig.2 Fig.3 Fig.4

Caution

1. A person’s left and right ear canals are not necessarily
symmetrical. This may cause different measurement
results. Always take temperature readings in the same
ear.

2. A soiled probe lens will result in inaccurate measurement.
Be sure to check that the probe lens is clean before use.

3. Body temperature rises after vigorous exercise, a bath or
shower, or eating. Wait at least 30 minutes before taking
temperature readings.

4. Do NOT use the ear thermometer when the ear canal is
wet (after swimming, bathing, etc.).

5. Let the ear thermometer stand at room temperature
before use.

6. It is important to know your normal temperature so you
can compare it to the measurement result.

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HOW TO OPERATE

FUNCTIONS

This thermometer has the following functions for care of
users.

• Ear Temperature: for human temperature.

• Time and calendar: for memory.

• Room Temperature: for monitoring the ambient temperature
for a baby or patient.

• Material surface temperature (NOT for body temperature): for
temperature of a baby's milk, etc.

• Stop watch: for taking a patient's pulse.

• Fever alarm: an alarm when a user's temperature is more
than 37.5°C, indicative of a fever.

• Memory: for recording up to 9 temperature readings.

• Celsius / Fahrenheit option switch: for international use.

TIME AND CALENDAR SETTINGS

1. Press and hold the ON/MEM button for about 5 sec and the

icon starts to fl ash, indicating the setting mode (Fig.5).

Date/Time

(24/12-hour display)

Fig.5

2. Press the SCAN button for the 12/24-hour setting mode.
The icon starts to fl ash, indicating the 24-hour display.
Press the SCAN button again and the 24 icon will disappear
from the screen, indicating the 12-hour display. When this
display is used, afternoon times will be indicated with the PM
icon. Press the SCAN button to toggle between the 12 and
24-hour displays.

3. Press the ON/MEM button to cycle the fl ashing icons in the
sequence below to select the respective setting.

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hoursminutessyearsmonthsdaysleave the setting screen

While the setting section is fl ashing, press SCAN button to
change the numbers. If no buttons are pressed in the

setting mode for 8 seconds, the display automatically
returns to the EAR TEMPERATURE mode.

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