Self-Diagnostic Functions; Memory Organization - Hanna Instruments HI 9271 Instruction Manual

SELF-DIAGNOSTIC FUNCTIONS

HI 9171, HI 9174, HI 9181, HI 9184, HI 9271 and HI 9274 are
factory programmed to automatically diagnose a fault and inform the
user by displaying an error code on the LCD.
Error codes are:
PEr0, PEr1, PEr2 = Short circuit on the system, the meter should be
returned for repair (see Warranty section).
PEr3 = Printer mechanism fault - repair needed (see Warranty
section).
PEr4 = Printer clutch jammed - reset the printer (see page 33).
PEr9 = Printer jammed - reset the printer (see page 33).

MEMORY ORGANIZATION

(HI 9181 & HI 9184 only)
Capacity
16,000 data samples, divided into 16 pages.
Capacity per page
1000 data with 1 channel monitored;
500 data with 2 channels monitored (four channels versions only);
250 data with 3 or 4 channels monitored (four channels versions only).
Each time a new logging mode is entered, it automatically starts a
new page. Once all 16 pages are used up, the meter will overwrite
the first lot. During logging, the meter automatically returns to the
oldest page in the memory and if it contains data, it will overwrite it.
In this case the first log will not correspond to the oldest set of data
It is recommended to periodically "clean" the memory. Save the data
in a PC if you need to keep a record and then disconnect the batteries
for about 1 minute. If you do this, remember to reset the time and
date, once the batteries have been inserted again.
ATTENTION
Data is stored into memory until batteries are removed. If replace-
ment of the batteries is needed and data is not to be lost, first plug in
an external 12VDC power supply and then proceed with battery
replacement as described on page 34. Only once batteries have been
replaced, it is possible to unplug the power supply without losing the
previously memorized data.