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Hach Sigma 950 Basic User Manual page 22

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3. Enable or disable the data logging mode that is shown on the display. Refer to the table that
follows for data logging mode descriptions.
Option
EXTENDED POWER
MODE
POWER SAVE
CONTINUOUS
4. Select SET MEMORY MODE, then select an option.
Option Description
SLATE When the memory is full, no more readings are recorded to the data log and the program is
completed (stopped).
WRAP
When the memory is full, the oldest reading is discarded from the data log each time a new reading
is recorded.
5. Select the input channels to be recorded to the data log.
a. Select SELECT INPUTS.
b. Select one of the input channels shown.
c. Push CHANGE CHOICE until Logged shows, the push ACCEPT.
d. Select the logging interval for the input channel, then push ACCEPT. Refer to
e. Enter more applicable settings for the input channel if applicable. Refer to
f. Do steps
b–e
again to record more input channels to the data log.
Table 16 Logging interval and days recorded – one input channel
Logging interval
Minutes
1
2
3
5
6
10
Channel
PROCESS TEMPERATURE
RAINFALL
LEVEL/FLOW
22 English
Description
Uses the least amount of power. When enabled, a reading is recorded for each
enabled input channel each time the logging interval ends (e.g., 1 minute or
5 minutes).
Automatically selected when the instrument thinks a battery is the power source.
When enabled, a reading for each enabled input channel is collected once per
minute. Then, the average reading for each channel is recorded each time the
logging interval ends.
When enabled, a reading for each enabled input channel is collected once per
second. Then, the average reading for each channel is recorded each time the
logging interval ends.
128 kB RAM
512 kB RAM
Days recorded (maximum)
12
80
24
160
36
240
60
401
72
481
120
803
Table 17 Additional input channel settings
Options
Logging interval, temperature units
Note: The temperature units can only be changed in this menu.
Logging interval, rainfall units (inches or cm)
Logging interval, level units, flow units
Logging interval
128 kB RAM
Minutes
Days recorded (maximum)
12
15
20
30
60
Table
16.
Table
17.
512 kB RAM
144
963
180
1204
240
1606
360
2409
720
4818

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