16
If M1 = 2 and M2 = 3
then S1+H1<S2, S1>LA, HA>S2+D2;
If M1 = 4 and M2 = 1
then S1<S2–H2, S1–D1>LA, HA>S2;
If M1 = 1 and M2 = 4
then S1–H1>S2, S2–D2>LA, HA>S1;
If M1 = 3 and M2 = 4
then S1>S2, S2–D2>LA, HA>S1+D1;
If M1 = 4 and M2 = 3
then S2>S1, S1–D1>LA, HA>S2+D2;
For HI 21523 only:
If M1 = 1 then S1+D1<HA;
If M1 = 2 then S1–D1>LA;
where the minimum deviation (D1 or D2) is 0.5 pH (for
HI21)
or 25 mV (for
HI22).
Note
The password cannot be viewed when SETUP is pressed
without entering the original password first. The default
password is set at “0000”. In the event that the user forgets
the password, this can be reset to “0000” by pressing and
holding CFM and then pressing LCD and CAL DATA at the
same time when the pH controller is in normal operating
mode (idle or control with measurement displaying).
Note
When a wrong setup value is con-
firmed, the pH controller does not
skip to the next setup item but remains
in the current item displaying a flash-
ing “WRONG” indicator until the
parameter value is changed by the user (the same is also
true for the setup code selection). In some circumstances,
the user cannot succeed in setting a parameter to a desired
value if the related parameters are not changed beforehand;
e.g. to set a pH high setpoint to 10.00 the high alarm must
be set to a value greater than pH10.00 first.
For code numbers 40, 41, 42, the output is related to pH
or mV units depending on the model (pH process meters
or mV process meters). Items 41 and 42 are not available
in HI215YZ .
