Omron ZN-CTX21 - 4.2.4 Definition of Items; (1) Ranking Clear (CLEAR); (2) Recording Interval (CYCLE)

4. Setting the Unit (Unit Operation)
4-7
4.2.4 Definition of Items
(1) Ranking Clear (CLEAR)
Clears the ranking. (The ranking is also cleared when the power is turned OFF.)
Operation:
A press of the REC key displays "CLEAR" at the lower row on the display. If the REC
key is pressed again (when the "CLEAR" indication is displayed), the ranking is cleared.
To cancel the clearing, press the MODE key.
(2) Recording Interval (CYCLE)
Specifies the interval of measured value recording. This setting item is only displayed when
the measurement mode (MODE) is set to "NORM" or "SLEEP".
The range of selection (Options):
1s (second)/ 2s / 5s / 10s / 20s / 30s / 1minute
Initial value: 1s
■Recording Interval and Internal Memory
Possible recording time in the internal memory depends on the recording interval setting as
shown in the table below:
(SD memory cards can be used for continuous recording for a longer time.)
Measurement Mode (NORM or SLEEP)
Recording
Interval
Possible Internal Memory
Recording Time
(1CH)
Possible Internal Memory
Recording Time
(3CH)
1 second
Approx. 1 hr. 45 min.
Approx. 1 hr. 15 min.
2 seconds
Approx. 3 hr. 30 min.
Approx. 2 hr. 30 min.
5 seconds
Approx. 8 hr. 45 min.
Approx. 6 hr. 15 min.
10 seconds
Approx. 17 hr. 30 min.
Approx. 12 hr. 30 min.
20 seconds
Approx. 1 day 11 hr.
Approx. 1 day 1 hr.
30 seconds
Approx. 2 days 4 hr. 30 min.
Approx. 1 day 13 hr. 30 min.
1 minute
Approx. 4 days 9 hr.
Approx. 3 days 3 hr.
Measurement Mode (HISPD)
Frequency
Possible Internal Memory
Recording Time
(1CH)
Possible Internal Memory
Recording Time
(3CH)
50 Hz
Approx. 11 min. 30 sec.
Approx. 8 min. 5 sec.
60 Hz
Approx. 9 min. 35 sec.
Approx. 6 min. 40 sec.
■Battery Life
Battery life varies depending on the recording interval setting. Refer to the following battery
life table and the battery operation period when setting the recording interval.
Conditions: Two AAA nickel-metal hydride batteries; SLEEP mode; Continue mode;
recording interval: 1s; network function OFF; SD memory card (HMC-SD291) is used;
ambient temperature: 23℃
Recording Interval
Battery Life
1 second
Approx. 7 days
2 seconds
Approx. 12 days
5 seconds
Approx. 20 days