Hanna Instruments HI 21 Series - Manual (Page 7)

13 12
• After confirmation, the selected param-
eter is displayed. The user can scroll
through the parameters by pressing CFM.
In order to directly set another param-
eter, press SETUP again and enter the
code or scroll to it by pressing CFM.
The following table lists the setup codes along with the descrip-
tion of the specific setup items, their valid values and whether
password is required to view that item (“PW” column):
Code Valid Values Default PW
00 Factory ID 0 to 9999 0000 no
01 Process ID 0 to 9999 (models w/o RS485) 0000 no
0 to 99 (models with RS485) 00 no
02 Control enable/disable 0: C.M. disabled 0 no
1: C.M. enabled
11 Relay 1 mode 0: disabled 0 no
(M1) 1: ON-OFF high setpoint
2: ON-OFF low setpoint
3: PID, high setpoint
4: PID, low setpoint
for HI 21523 only : 0: disabled
1: PID, high setpoint
2: PID, low setpoint
12 Relay 1 setpoint 0.00 to 14.00 pH 8.00 pH no
(S1) -2000 to 2000 mV 500 mV
13 Relay 1 hysteresis 0.00 to 14.00 pH 1 pH no
(H1) 0 to 4000 mV 50 mV
14 Relay 1 deviation 0.50 to 14.00 pH 1 pH no
(D1) 25 to 4000 mV 50 mV
15 Relay 1 reset time 0.1 to 999.9 minutes 999.9 mins no
(HI 21523 only)
16 Relay 1 rate time 0.0 to 999.9 minutes 0.0 mins no
(HI 21523 only)
21* Relay 2 mode (M2) same as relay 1 0 no
22* Relay 2 setpoint (S2) 0.00 to 14.00 pH 6.00 pH no
-2000 to 2000 mV -500 mV
* Available only in models with two relays
• Then confirm the displayed digit with
and move to the next one.
• When the whole password has been
inserted, press CFM to confirm it.
Note The default password is set at “0000”.
• The LCD will display “SET” on the
upper part and “c.00” on the lower,
allowing the user to edit setup pa-
rameters (see table below).
• Enter the code of the parameter you want to set, using the
arrow keys as per the password procedure above (e.g. 41).
• Confirm the code by pressing CFM and the default or the
previously memorized value will be displayed with the first
digit blinking.
Note When the password is not inserted or a wrong password is
confirmed, the display will only show the previously memo-
rized value, without blinking (read only mode). In this case,
the value cannot be set. Press LCD and start again.
• Enter the desired value using the arrow keys and then press
CFM.