Configure Pressure Compensation; Configure Pressure Compensation Using Prolink Iii - Emerson Micro Motion 2700 Configuration And Use Manual

Configure process measurement
Derived
Variable Description
Concentration The mass, volume,
(Specific Gravity)
weight, or number of
moles of solute or of
material in suspension
in proportion to the to-
tal solution, derived
from specific gravity
4.9

Configure pressure compensation

Pressure compensation adjusts process measurement to compensate for the pressure
effect on the sensor. The pressure effect is the change in the sensor's sensitivity to flow
and density caused by the difference between the calibration pressure and the process
pressure.
Tip
Not all sensors or applications require pressure compensation. The pressure effect for a specific
sensor model can be found in the product data sheet located at www.emerson.com. If you are
uncertain about implementing pressure compensation, contact customer service.
Prerequisites
You will need the flow factor, density factor, and calibration pressure values for your
sensor.
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4.9.1

Configure pressure compensation using ProLink III

1.
2.
3.
4.
62
Density at
reference
tempera-
ture
✓
For the flow factor and density factor, see the product data sheet for your sensor.
For the calibration pressure, see the calibration sheet for your sensor. If the data is
unavailable, use 20 PSI.
Choose Device Tools > Configuration > Process Measurement > Pressure
Compensation.
Set Pressure Compensation Status to Enabled.
Set Pressure Unit to the appropriate unit.
If you will use an external pressure value, set Pressure Unit to match the pressure
unit used by the external pressure device.
Enter Flow Calibration Pressure for your sensor.
Micro Motion Model 2700 Transmitters with Intrinsically Safe Outputs
Calculated process variables
Standard
volume Specific Concen-
flow rate gravity tration
✓ ✓
Net
Net mass volume
flow rate flow rate
✓