Working Mode; Automatic Mode; Standby Mode; Manual Mode - Hanna Instruments PCA 311 Instruction Manual

WORKING MODE

AUTOMATIC MODE

STANDBY MODE

Note:

MANUAL MODE

3 4
Three working modes
could be selected for
the analyzer. The selec-
tion is available in
"General Menu" -
"System Functions" -
"Manual Commands"
- "Work Mode".
The work mode could
be set as AUTOMATIC,
STANDBY or MANUAL.
In this mode the analyzer performs the measurements
continuously accordingly with the settings.
When in standby, the sampling electrovalve is closed, the
measurements are stopped and the peristaltic pump is
activated for 2 seconds each 100 minutes to preserve the
elasticity of the tubes.
The display will show "STANDBY" on the first line when in the
measurement mode. The bromine, pH, ORP, and
temperature displayed values will be all time the last
measured ones.
The SYSTEM ERROR LED is always on (no blinking).
When the analyzer exit from STANDBY, the relays and corre-
sponding LED's are activated only after a new value is read.
For testing, maintenances and setup purposes, the analyzer
has the possibility to use direct manual commands.
In this operating mode, by setting the "Alarm Relay", "Dose Br
Rel.", "Dose pH Rel.", "Sys. Err. Rel", "Stirrer", "Valve", "Cell
Led" and "Reagent Pump" as "ON" or "OFF" will turn on or
off the corresponding device.
The display will show "MANUAL" on the first line when in the
measurement panels. The displayed values will be the last
measured ones and the measuring sequence is stopped.
When in manual mode the ALARM LED is always on (no blinking).