Emerson Rosemount5081, Инструкция по эксплуатации, Страница: 97 / 152

Conductivity determination Figure 8-10:
Use the following formula to determine the appropriate resistance value to use to simulate a conductivity
value.
8.2.7 5081C warning and fault messages
The 5081 transmitter continuously monitors the sensor and transmitter for conditions that
cause erroneous measurements. When a problem occurs, the transmitter displays either a
warning or a fault message. A warning alerts you that a potentially disabling condition
exists. There is a high probability that the measurement is in error. A fault alerts the user
that a disabling condition exists. If a fault message is showing, all measurements should be
regarded as erroneous.
When a warning condition exists:
1. The main display remains stable; it does not flash.
2. A warning message appears alternately with the temperature and output readings
in the second line of the display. See
Section 8.2.3 for an explanation of the warning
messages and suggested ways of correcting the problem.
When a fault exists:
1. The main display flashes.
2. The words FAULT and HOLD appear in the main display.
3. A fault message appears alternately with the temperature and output readings in
the second line of the display. See
Section 8.2.3 for an explanation of fault messages
and suggested ways of correcting the problem.
4. The output current will remain at the present value or go to the programmed fault
value.
5. If a transmitter is in HOLD when the fault occurs, the output remains at the
programmed hold value. To alert you that a fault exists, the word FAULT appears in
the main display, and the display flashes. A fault or diagnostic message also appears.
Diagnostics and troubleshooting
Instruction Manual 87