PART THREE - OPERATION
SECTION 4 - ANALYZER CONFIGURATION
Model P53 pH/ORP Analyzer (universal-mount 1/2 DIN)
Rev. 6-501
50
SET FUNCTION Mode
(alarm, control,
status or timer)
☞
2.
Use
Ø
Ø
key
to select the “SET RELAY A” line, and press
ENTER key
to display
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.
3.
With the “SET PARAMETER” line selected, press
ENTER key
to display a screen like
.
Use
Ø
Ø
and
×
×
keys
to view both choices (SENSOR or
TEMPERATURE). With the desired choice displayed,
press
ENTER key
to enter this selection.
Each relay can be selected to function as a:
•
ALARM
relay (with separate high and low alarm points
and deadbands) that operates in response to the
measured pH (or ORP) or temperature.
•
CONTROL
relay (with phasing, setpoint, deadband,
and overfeed timer) that operates in response to the
measured pH (or ORP) or temperature.
•
STATUS
relay that is not configurable. It is a dedicated
system diagnostic-only alarm relay that automatically
energizes when the “WARNING CHECK STATUS”
message flashes on the MEASURE screen. This occurs
when the analyzer detects a sensor or analyzer “fail”
diagnostic condition (see PART THREE, Section 6.1 for
details).
•
TIMER
relay that is intended to control a GLI sensor
cleaning system (or equivalent) on a timed basis. A
TIMER relay activates after an entered INTERVAL time
(up to 999.9 minutes) expires. The TIMER relay re-
mains on for the entered DURATION time (1-999
seconds).
NOTE:
When a TIMER relay is counting down DUR-
ATION time, both analog outputs and all
ALARM and CONTROL relays are automati-
cally “held” to ensure that connected devices
are not disrupted by the sensor cleaning upset
condition. An OFF DELAY time (1-999 sec-
onds) can be entered to define how long after
the TIMER relay turns off that outputs and re-
lays will remain held, providing time for the
sensor to stabilize after cleaning.
