Citizen CAL 7240 Handleiding

Citizen Horloge CAL 7240

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CITIZEN QUARTZ

Analog Alti-Meter

Model No. AY6❈❈❈

Caliber No. 7240

• INSTRUCTION MANUAL

CTZ-B6771

Thank you very much for purchasing a CITIZEN

QUARTZ WATCH. To ensure correct use, please

read these instructions carefully. Please ensure that

the Citizen international guarantee card is supplied

with watch on purchase, that you may claim the

guarantee service (subject to the terms of guarantee).

Precautions for use

This watch is not a measuring instrument authorised

by official authorites.Do not use the altimetry function

to judge situation involving danger.The following

precautions should be adequately understood before

using the altimeter. Please remember that the

altimetry function should be used only as general

reference.

1. Do not use the Altimetry Function When…

The altimetry should not be used in the following

situations:

• When judging your actions or situation involving

danger in an environment where the temperature

changes drastically.

• In an environment where pressure is subject to

change, such as in an airplane or building (correct

measurement cannot be obtained).

• When the altitude changes greatly within a short time.

• In case of special handling other than normal use,

not described in this manual.

2. Altimetry Function

The altitude displayed by this watch is relative to

altitude based on the sensored air pressure and “The

international standard atmospheric pressure and

altitude”. Therefore, display of measured altitude

will change if air pressure changes, even if

measurement is made in the same place. the time

display from measurement to display of altitude is

approximately 5 seconds (in continuosly altimetry

mode). Therefore, this altimetry function may not be

used in sports as skydiving, etc., where altitude

changes greatly within a short time. After 30 minutes,

Continuous Altimetry Mode will automatically change

to Altimetry Mode in which every measurement is

made every hour. To resume Continuous Altimetry

Mode, operate the watch as explained in the instruction

manual. In order to efficiently use the altimetry function

of this watch, the altitude must always be corrected

for your location, clearly indicated with the altitude.

3. Pressure Sensor

Do not disassemble the pressure sensor used in this

watch or poke it with a thin rod. Take care that no

dust enters the pressure sensor.

4. Battery

Battery life will maintain accuracy for about 2 years

under normal conditions after installing a new battery.

However, the battery life will change depending on the

frequency that the altimetry, chronograph are used.

Thus, early replacement of the battery is

recommended.

A. Basic Functions of the Altimeter

This watch is designed to calculate altitude from

changes in air pressure by using the relationship

between air pressure and altitude, based on the

conditions for standard correct atmosphere*

speciﬁed by the International Civil Aviation

Organisation (ICAO). To obtain correct altitude on the

watch, altitude must be aligned with an accurate point

(triangulation station or benchmark). Such operation

is called “Compensating the altitude” (see page 12)

* Standard atmosphere: ICAO Standard Atmosphere

adopted by the ICAO in 1964, whereby 1013.25 hPa

at 15°C is speciﬁed as elevation 0. However, air

pressure continuosly changes at any given place.

This watch’s operating is based on ISA standards.

The following chart provides an outline of ISA

standard conﬁgurations.

(from International Standard Atmospheric)

Altitude (m) Atmospheric Temp ( oC) Temp diff.

Pressure (hPa) every 1,00

5,000 540.2 -17.5

4,000 616.4 -11.0

3,000 701.1 -4.5 Approx.

2,000 795.0 2.0 6.5oC

1,000 898.7 8.5

0 1,013.25 15.0

B. Operating Instructions

V: Pressure (altimetry) sensor: Detects the

atmospheric pressure and displays as altimetry

via an IC.

Z: Register-ring: Setting the register-ring allows you

to determine the difference in altitude. If the

indicated altitude value changes at the same

place, this indicates changes in the air pressure.

If the altitude hand shifts to indicate a lower

altitude the air pressure has increased.

C. Setting the Time and Date

[Time Mode]

• The time mode displays both 12-hour and 24-hour time.

• The hour, minute and 24-hour hands indicate the

time even when the watch is in Chronograph Mode.

[Setting the Time

and Date]

1. Setting the time

If your watch is a

type with a screw-

lock crown,

unscrew the

crown.

➀ Pull the crown out two steps. The second hand will

spin rapidly and stop at 0.

➁ Set the hours and minutes to the current time by

turning the crown. Check the 24-hour hand to

conﬁrm whether the hands are set appropriately to

AM or PM.

➂ Push the crown back to its original position. The

watch will then resume with the correct time.

2. Setting the date

➀ Pull the crown out one step.

➁ Set the desired date by turning the crown.

➂ Push the crown back to its original position.

Note: If setting the date between hours of 9.00 PM

and 1:00 AM may result in the date not

changing by the next day.

* If your watch is of a type with a screw-lock crown,

tighten the crown after setting the time and/or date.

D. Altimetry

1. Altimetry

• The altimeter automatically

measures altitude every hour in

Time Mode.

• The altimeter measures and

displays from -300m to 5,000m

in 10m gradation.

• Altitude hand [I] (A) is

synchronized with [II] (B) to

display the current altitude.

Altitude hand [I] (A): Displays the altitude in 10m

gradation.

Altitude hand [II] (B): Displays the altitude in 1,000m

gradation.

Note: The altimeter displays “-300m” for an altitude

less than -300m, and “5,000m” for more than

5,000m.

2. Reading the altimetry displays

(1) Altitude from 0 to 1,000 m

* The ﬁgure below shows an altitude of 190 m.

(2) Altitude from 1,000 to 2,000 m

* The ﬁgure below shows an altitude of 1,350 m.

(3) Altitude from -300 to 0 m

* The ﬁgure below shows an altitude of -100 m.

3. Continuous altimetry

The watch shows continuous changes in altitude once

every 5 seconds for 30 minutes after the starting

measurement for altitudes.

• Measuring the altitudes.

Press button ➁ once in Time Mode. The second

hand changes to operate on an extended 2-second

increment basis. This indicates that the watch is now

in Continuous Altimetry Mode.

Pressing button once returns the watch to altimeter➁

mode. Also, the watch will automatically return to

Altimeter Mode 30 minutes after being set to

Continuous Altimetry Mode even if no button is

pressed.

Name Time (Altimeter) Mode Chronograph Mode

Indicates measurements of Indicates measurements

less than 1 minute. over than 1 minute.

Chronograph second hand Chronograph minute hand

Altitude hand II…, Indicates chronograph measurements Indicates chronograph measurements

Unit: 1,000 m less than 1 minute. over than 1 minute.

G: Second hand Displays seconds Chronograph 1/20 seconds Chronograph second hand

A: Function hand Altitude hand I…,

Unit: 10 m

B: Mode hand

C: Minute hand Always displays minutes.

D: Hour hand Always displays hours.

E: Crown Used to set the time and date

F: 24-hour-hand Always displays 24-hour time sychronize with the hour hand.

➀ ➀: Button Switching modes among Time and, Chronograph, Altitude compensation

➁ ➁: Button Chronograph start/stop/reset, continuous altimetry Altitude compensation

➀ ➁ ➂

Time (Altimetry) Mode

Continuous Altimetry Mode

button ➁

(irregular 2-second

increments)

Auto Return

– 30 minutes

are staring meas-

urement

E. Altitude Compensation

The altitude displayed by this watch is relative altitude

based on standard atmosphere. To obtain the correct

altitude during mountain climbing, the altitude

displayed by this watch must be aligned with an

accurate altitude at a geographical point of reference

(triangular station, ﬁrst-order benchmark, an altitude

on an accurate map, etc.). Such an operation is called

“altitude correction”. If air pressure changes 1 hPa,

the altitude difference will be approximately 10m.

Therefore, altitude compensation must be made

several times a day if the weather changes drastically

during mountain climbing.

[Compensating the altitude]

The current altitude can be corrected within a range of

Ⳳ300m.

Compensation

a) Press button 嘷2 for more than 2 seconds in Time

Mode (or Continuous Altimetry Mode). The second

hand (G) changes to indicate 0.5 second increments.

This indicates that the watch is now in Altitude

Compensation Mode.

b) Press button 嘷1 or 嘷2 to compensate the altitude.

• Button 嘷1 : Altitude Hand [l] (A) decrement up by 10m

in each time the button is pressed.

• Button 嘷2 : Altitude Hand [l] (A) increment by 10m in

each time the button is pressed.

c) After compensation is completed, return to Time

Mode (or Continuous Altimetry Mode).

Pressing button 嘷2 for 2 seconds or more, returns

the watch to Time Mode (or Continuous Altimetry

Mode).

Note: If the watch is left in the Altitude Compensation

Mode for more than 1 minute it will automatically

return to Time Mode or Continuous Altimetry

Mode. (Auto Return)

F. Chronograph

1. Switching to Chronograph mode

Press button 嘷1 once in Time Mode. The function

hand (A) and the second hand (G) will move forward

to the 0 position. The mode hand (B) will advance to

SEC (seconds). The watch is now in Chronograph

Mode (reset).

* If the watch is left in Reset Chronograph Mode for

3 minutes it will automatically return to Time Mode.

2. Chronograph measurement

A maximum of 99 minutes and 59 seconds may be

measured by the chronograph. After that, measurement

stops automatically and the chronograph returns to

the reset position.

嘷1 Measurements of more than

1 minute

The chronograph measures in

units of 1/20 (0.05 seconds).

Measurement is indicated by

the chronograph’s 1/20 hand

(G) and the chronograph’s

second hand (A).

The mode hand (B) indicates the SEC (seconds)

zone.

嘷2 Measurements of over 1 minute

The chronograph measures in one second

increments. Measurement is indicated by the

chronograph’s second hand (G) and the

chronograph’s minute hand (A). The mode hand

(B) indicates the MIN (minutes) zone.

3. Reading the chronograph’s scales

嘷1 Measurements of less than 1 minute:

Value are indicated by the chronograph’s second

hand (A) and 1/20 hand (G). To read seconds, use

the outer scales. In Fig. A as follows, the

chronograph displays 33.45 seconds.

Once 60 seconds is reached, the second hand (A)

will change to the minute hand and indicate 1 minute.

嘷2 Measurements of more than 1 minute:

Value are indicated by the chronograph’s minute

hand (A) and second (G). To read minutes, use the

outer scales. In Fig. B as follows, the chronograph

indicates 80 minutes and 18 seconds).

Once 100 minutes is reached, measurement

automatically stops and the chronograph returns

to the reset position.

Product specificaties

Merk:	Citizen
Categorie:	Horloge
Model:	CAL 7240

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