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The P .05 item sets the number of repeated messages to
send (0 is associated with no repetition: only one warning
message will be sent and no confirmation waited), while
the P .06 item sets the delay (in minutes) between two sub-
sequent messages .
When the instrument receives a phone call (coming from
one of the programmed cellular numbers), it interprets the
calling as an information request and answers hanging up
and sending an SMS with its current status report (number
of remaining messages, pH or ORP and temperature values,
current active errors) . The message will be as for example:
“Rem_msg: 150; pH: 8 .32; Temp: 25 .8; Alr set1; Rel on” .
The maximum number of characters for an SMS is 160, so
that, if many errors are active, it is possible that the message
be truncated . To avoid this problem, a coded notation is
used to identify the active errors .
Here is the list of the error strings coded notation:
• Alarm for setpoint 1: “Alr set1”
• Alarm for setpoint 2: “Alr set2”
• Max relay ON time error: “Rel on”
• Life check error: “Life chk”
• pH electrode broken or leakage: “pH brk”
• Reference electrode broken or leakage: “Ref brk”
• Old pH probe error: “Old prb”
• Dead pH probe error: Dead prb”
• Calibration time-out error: “Cal tout”
• Temperature probe broken error: “Temp brk”
• Digital transmitter error: “Tx err”
• Cellular error: “Cell err”
• Power reset error: “Pwr rst”
• EEPROM corruption error: “EEPr cor”
• Watchdog error: “Wtc dog”
• Temperature level error: “Temp lvl”
If no error is active, then the correspondent string will be:
“No error” .
If at the information request the instrument is in Hold mode,
the “Hold” string is added before the pH (or ORP) indica-
tion . If the instrument is performing a cleaning action, The
“Cleaning” string is added before the readings information .
