Operational Guide; Setup Mode - Hanna Instruments HI 720 Instruction Manual

OPERATIONAL GUIDE

The HI 720 process controller can operate in six main modes:

• Setup mode

• Calibration mode
• Control mode
• Idle mode
• Last calibration data viewing mode
• Diagnostic mode (active errors & event log file scrolling)
All operating modes are described in the following sections.
S M
ETUP ODE
The Setup mode allows the user to set all needed characteristics of the meter. To
enter the mode, press the SETUP key and enter the password when the device is
in idle or control mode.
If the correct password is not entered, the user can view the setup parameters
(except passwords, phone numbers and PIN code), but not modify them (and
the device remains in control mode).
Entering the Password
• Press the SETUP key to enter the setup mode.
The display will show "0000" (default value),
with the first digit highlighted.
• Enter the first digit of the password by using the
up & down arrow keys.
• Move to the next digit with the
above. Continue for the last two digits. When the whole password has been
inserted, press CFM to confirm.
Entering Setup Items
• After the password has been confirmed, the dis-
play will show the name of the first setup group
(General Setting).
• Using the arrow keys it is possible to cycle
through all setup groups, while pressing SETUP
will exit the mode, and pressing CFM will con-
firm the desired selection.
• Once a group is selected, the display shows the
first parameter of the group together with its
current value.
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key and enter the desired value as described
The user can choose the desired parameter with the up & down arrow keys,
and confirm the selection by pressing CFM.
Note For some groups, it is necessary to enter several sublevels before
choosing a parameter value. Follow the displayed messages to pro-
ceed, confirm or exit each screen.
• If a fixed set of values is available for the se-
lected item, use the arrow keys to switch be-
tween them. Otherwise, if a numeric value has
to be entered, use the arrow keys to change the
value of the highlighted digit and cycle through
the number's digits.
• Once a value is set, press the CFM key to con-
firm, and the instrument will turn to the previ-
ous screen.
Note After modifying a value in the concentration curve triplets or in
the conductivity/temperature couples for the temperature com-
pensation algorithm, then it is not possible to exit without saving. To
return to the previous value, the number must be entered again.
• If a wrong value is confirmed, the "Invalid value!"
or "Invalid choice!" message advises the user,
the value is not accepted and the instrument
will not switch to the next item until a correct
value will be confirmed.
• When the last item of the group is reached, by pressing the CFM key again the
display will show the group name. The group can then be changed by press-
ing the up & down arrow keys.
Note If no activity is performed for about 5 minutes after entering the
setup mode, the mode is automatically exited and the instrument
returns to the previous mode.
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