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Users may calibrate individual inputs as well as all inputs at once. Calibration settings may be
saved and then loaded into the logger at a later date if the calibration settings have changed.
Refer to section
5.16.4 for more details.
4.4.
Unit Serial Number and Comment
Every OM-DAQLINK data logger unit is embedded with a unique serial number.
The data logger only can be loaded with a descriptive comment to identify its task and location.
You may add or edit the logger comment via the DataSuite software.
Every time data is transferred to the computer it is la
beled both with the logger’s serial number
and comment and is displayed in the graph or data table view.
The unit serial number is also marked on a sticker on the back of the product.
4.5.
Power Supply
4.5.1.
OM-DAQLINK-TEMP and OM-DAQLINK-TEMPRH Data
Loggers
The OM-DAQLINK-TEMP and OM-DAQLINK-TEMPRH data loggers run from an internal NiMh
rechargeable battery as well as from external AC power supply. Depending on the logger
configuration, from a fully charged battery, the data logger can run for up to several months.
Refer to section
4.5.3 for more details on battery life.
Note:
Charge the data logger units for 16 hours before using them for the first time.
When connected to external power supply, the data logger battery will not be charged when the
unit is turned off. This will allow the system to protect the battery from overheating.
First Time Charging
From a fully drained battery, you must charge the battery for
16 hours
to bring it to a full charge.
Once the charge cycle is complete, the logger will run from the external power supply, without
draining (or charging) the internal battery. In order to maintain a fully charged battery and
ensure the battery doesn’t self-discharge, the battery charger will daily charge the unit for one
minute to maintain the battery capacity.
Note:
Before storing the OM-DAQLINK units make sure you have unplugged all the sensors
and turned the units off via the keypad.
Standard Charging
Whenever a logger is reconnected to the charger it will begin the 16-hour charge cycle, no
matter what the status of the battery. Once the charging cycle is complete the logger will run
from external power supply.
Effect of Charging Battery on Temperature Sensor
For loggers measuring data with the internal temperature sensor, it is critical to note that during
the charge cycle the logger will heat up thereby causing the internal temperature sensor reading
to rise by up to 10 ˚C above ambient temperature. Once the charging process is complete, the
logger will cool down and the internal temperature sensor readings will return to normal.
For loggers remaining connected to AC power, to prevent the logger from heating up again
following the initial charge cycle, the logger will receive a one minute
trickle charge
each day