319R | Installation & Operation 2.0 | |
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Alarm Terminal Connection
SPDT relay contacts are provided for each of the 3 alarms. There are 9 terminals available on the back panel of the system for alarm circuit connection. The explanation for the relay terminals abbreviations is as follows:
NC= Normally closed C = Common NO= Normally open
The alarm relay circuits are designed for failsafe operation, meaning that the relays are activated (energized) during normal operation. If power fails, or if an alarm setpoint is exceeded, the relay will become
Sensor Installation or Replacement
CAUTION: The sensor electrolyte is caustic. Do not let it come in contact with skin. If it does, immediately flush affected area with water. Consult the Emergency First Aid procedures in the Material Safety Data Sheet in the Appendix.
Do not attempt to open or repair the sensor. Leaking or ex- hausted sensors should be disposed of in accordance with local regulations. Please refer to the Material Safety Data Sheet in the Appendix to learn about potential hazards and corrective action in case of accident.
To install the cell:
1.Turn the unit off by placing the power switch (on the rear panel of the analyzer) in the OFF position.
2.Disconnect the red and black leads from the terminal strip. Remove the spent cell by pulling up on it and twisting slightly.
3.Remove the new
CAUTION: Do not scratch, puncture, or damage the sensing membrane of the
4.Attach the red lead of the new cell to terminal #1 and the black lead to terminal #2.
5.Replace the cell on the cell holder by pushing and twisting until it strikes bottom.
TELEDYNE BROWN ENGINEERING | 5 |
Analytical Instruments
