Analog Output - Emerson Rosemount 1208A Reference Manual

Level and flow transmitter

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Configuration parameters

October 2022

Low alarm

Enable or disable the low alarm.

Alarm set points

SP1 - High alarm set point

If the measured value is above this set point, the digital output is set to alarm state.

SP2 - Low alarm set point

If the measured value is below this set point, the digital output is set to alarm state.

Hysteresis

The hysteresis is a buffer zone so the alerts do not toggle on and off when the

measurement value fluctuates around the alarm limit. The alarm is set when the value

exceeds the alarm limit. The alarm is then cleared when the value falls outside the

hysteresis zone.

SP1 - Hysteresis high alarm

Hysteresis zone for the high alarm.

SP2 - Hysteresis low alarm

Hysteresis zone for the low alarm.

B.4

Analog output

B.4.1

Analog control variable

Select between volume flow or level to control the analog output.

B.4.2

Upper/lower range value

Enter the range values that correspond to the analog output values 4 and 20 mA. In

normal operation, the transmitter will drive the output in response to volume flow or level

from the lower to upper saturation points.

Note

The 20 mA point should be set below the reduced accuracy zone at the top of the tank.

Reference Manual

00809-0100-7062

Rosemount 1208A Level and Flow Transmitter

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