Setup Mode - Hanna Instruments HI 22 Series Instruction Manual

• Power Supply: Connect a 3-wire power cable
to the terminal strip, while paying attention to
the correct line (L), earth (PE) and neutral (N)
terminal connections.
Power: 115VAC - 100 mA / 230VAC - 50 mA.
Line Contact: fused inside 400 mA.
PE must be connected to ground; leakage current 1
mA.
• Electrode: Connect the pH or ORP electrode to the BNC
socket (#10 at page 6).
To benefit from the differential input, connect the proper
electrode wire (if available)
or a cable with a potential
matching pin (grounding bar) to the relevant terminal (#5
at page 7).
Note
When it is not possible to immerse the Potential Matching Pin
together with the pH electrode in the solution, disable the
differential input by connecting the Connection for Potential
Matching Pin (#5 page 7)
with the Connection for Elec-
trode Reference (#6 on
page 7) with a jumper wire.
• Pt 100 Terminals: these contacts (#3 at page 7) connect
the Pt 100 temperature sensor for automatic temperature
compensation of pH measure-
ment. In the case of shielded wire,
connect the shield to pin 4.
In the case of a 2-wire sensor con-
nect the Pt 100 to pins 1 and 3,
and short pins 2 and 3 with a
jumper wire.
If the Pt 100 has more than 2
wires, connect the two wires of one
end to pins 2 and 3 (pin 2 is an
auxiliary input to compensate for the cable resistance) and
one wire from the other end to pin 1.
Leave the fourth wire unconnected, if
present.
• Power Supply Output: these terminals provide +5V and -
5V DC (max current: 10 mA) signals to supply power to
amplified electrodes.
Note
All cables connected to the panel should end with cable lugs.
10

SETUP MODE

HI 21 and HI 22 offer a multitude of possibilities from ON/
OFF , proportional or PID dosage to analog recorder output
and from alarm to selftest features.
The Setup Mode allows the user to set all needed character-
istics of the meter.
The setup mode is entered by pressing SETUP
and entering the password when the device
is in idle or control mode.
Generally speaking, if the password is not inserted the user
can only view the setup parameters (except for password)
without modifying them (and the device remains in control
mode). An exception is certain setup items, or flags, which
can activate special tasks when set and confirmed.
Each setup parameter (or setup item) is assigned a two-
digit setup code which is entered and displayed on the
secondary LCD.
The setup codes can be selected after password and CFM
are pressed. When CFM is pressed, the current setup item is
saved on EEPROM and the following item is displayed.
Whenever LCD is pressed, the de-
vice reverts back to control mode.
The same is true when CFM is
pressed on the last setup item.
The possible transitions in setup mode are the following:
ENTERING THE PASSWORD
• Press SETUP to enter the setup mode. The LCD will display
"0000" on the upper part and "PAS" on the lower. The first
digit of the upper part of the LCD will blink.
• Enter the first digit of the pass-
word by the or keys.
11