Hanna Instruments HI 98230 - Manual (Page 3)

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FUNCTIONAL DESCRIPTION
1) Power adapter plug
2) Electrode connector
3) LCD (Liquid Crystal Display)
4) PAPER key, to move the paper up
5) ON/OFF key, to turn the meter on and off
6) ALT key, to activate alternate key function
7) RANGE/LIGHT key, to select measurement range, to display
time, and to enable/disable backlight (with ALT)
8) LOG key, to store measurements on-demand
9)
CAL key, to move down or enter calibration (with ALT)
10) CFM key, to move right or confirm values (with ALT)
11) FNC key, to move up or select function codes (with ALT)
The meters provide a controlled access to calibration and GLP settings
through a password protection method.
To prolong battery life, the backlight and printing features are
disabled when the batteries are getting low, and the "LOBAT"
indication is displayed to warn the user of this condition. However,
the meter continues to measure correctly even when the low battery
indication is displayed. When the batteries become too weak to
support proper function, the Battery Error Preventing System (BEPS)
automatically switches the meter off.
The meters are equipped with an internal lithium battery that
powers the clock circuit even in the absence of power supply.
For long term field and lab applications, these meters can be connected
to a 12 Vdc adapter.
When in logging mode, the meter stores the measurements in memory
at a user selectable interval from 1 to 180 minutes. This information can
be retrieved at a later time and also printed.
HI 98230 and HI 98240 also allow the transfer of stored data to a
computer via the HI 9200 infrared transmitter connected to the PC
serial port.
In addition, the meters allow the user to enter an ID code to uniquely
identify the instruments.