PART THREE - OPERATION
SECTION 6 - TEST/MAINTENANCE
Rev. 5-1000
Model C53 Conductivity Analyzer (universal-mount 1/2 DIN)
73
screen confirms that the analyzer is operating properly.
If “FAIL” appears, it may mean:
•
EPROM failure (data is not valid).
•
Scaling card not present or not recognized.
•
Analog-to-digital converter not responding.
•
RAM failure.
•
Internal serial communications failure.
4.
Press
ENTER key
once to view the “STATUS:
SENSOR OK” screen. Then press the
ENTER key
again to view the “STATUS: TEMPERATURE OK”
screen. If FAIL appears on either input status screen, it
may indicate:
•
Sensor is disconnected or incorrectly wired.
•
Signal is very noisy or exceeds measuring range.
5.
With the “STATUS: TEMPERATURE OK” screen dis-
played, press
ENTER key
once to view the “STATUS:
RLY A” screen. Subsequent
ENTER key
presses dis-
play status screens for Relay B, C, and D. Status
indications can be:
Status Indication
Meaning
ACTIVE
(Relay energized;
LED is on.)
Control Relay: Measured value exceeds setpoint.
Alarm Relay: Measured value exceeds low or
high alarm point.
Status Relay: Existing system diagnostic
condition has been detected.
INACTIVE
(Relay not energized;
LED is off.)
Control Relay: Measured value does not
exceed setpoint.
Alarm Relay: Measured value does not exceed
low or high alarm point.
Status Relay: Analyzer has not detected system
diagnostic condition.
TIMEOUT
(Relay not energized;
LED is blinking.)
Control Relay: Overfeed timer has timed out;
manually reset it.
NOTE:
TIMEOUT only applies to control relays.
COUNTING
(Relay energized;
LED is on.)
Control Relay: Overfeed timer is counting, but
has not timed out.
NOTE:
COUNTING only applies to control relays.
6.
To end status checking, press
ESC key
or
ENTER key
(display returns to TEST/MAINT top-level menu
screen).
