Aquametrix 2200D Dissolved Oxygen Controller/Analyzer User Manual - Manual (Page 17)

Model 2200D/P91 Page 15
5.7 Status
5.7.1 The 2200D continuously checks the integrity of all stored data and monitors the
condition of the measuring system. If a fault is detected, the FAIL LED above the
display will turn red. The STATUS in the operation menu will provide a numerical
code, giving a possible cause and a suggested remedy.
5.7.2 The following table shows the display codes, causes and remedies:
Code Possible Cause Suggested Remedy
0 Normal Condition No action required
1 Reserved
2 Temperature Sensor off Scale Verify process. Check for open or short
connections.
3 D.O. reading off Scale Verify process. Check for open or short
connections.
4* Memory Loss Call your Aquametrix representative
5 Reserved
6 Sensor Fault Check probe membrane for perforation
7 Factory Setting in force, as a Perform procedure according to Section 9.2
result of the ESCAPE procedure
NOTE: Code 4 could be a serious failure so the alarm relay will in addition to the red illumination of the
FAIL LED for Model 2200D-X-1 and STATUS LED for Model 2200D-X-2, if DIP switch 5 Bank
S1 is OFF.
5.8 Relay A Setpoint (For Model 2200D-X-1 only)
5.8.1 As shipped from the factory, Relay A is configured to control decreasing D.O.
However, you may change the direction of control by changing the position of DIP
switch 4 Bank S1. Please refer to Section 4.8.
5.8.2 The relay setpoint may be at any place on the scale. To establish the setpoint
proceed as follows:
a) Press CALL to enter the MENU. If the PASSWORD function is enabled, enter
the password then press CALL to illuminate the “%sat/ppm” indicator. If the
PASSWORD function is not enabled, “%sat/ppm” will illuminate at the first press
of CALL.
b) Use the down arrow button to illuminate the PPM LED located to the right side
of the display.