Analog Failure Alarm
Upon a rare CPU or hardware failure, the Yokogawa transmitter reverts to an "up-scale" analog output status alarm of 21.6 mA. The transmitter can be changed to a "down-scale" output of 3.2 mA. Refer to Instruction Manual for details for making the change.
Also, Yokogawa offers "up-scale" and "down-scale" analog outputs status alarms that comply with NAMUR NE43 recommendations. Refer to the General Specification sheet for the options needed for the NAMUR NE43 compliant output alarms.