Density Calibration using ProLink III Software (MicroMotion)

Calibration - Point 1 (Air)/ Point 2 (Water)

Figure 1.1 - Density Calibration (Calibration)

Density calibration establishes the relationship between the density of the calibration fluids and the signal produced at the sensor. Density calibration includes the calibration of the D1 (low-density) and D2 (high-density) calibration points.

During density calibration, the sensor must be completely filled with the calibration fluid, and flow through the sensor must be at the lowest rate allowed by your application. This is usually accomplished by closing the shutoff valve downstream from the sensor, then filling the sensor with the appropriate fluid.

1). Density Point 1 (Air) Calibration

#To perform the low-density calibration:

a). Fill the sensor with a low-density fluid, such as air.

b). Start Prolink, and Connect to Physical Device. Read More: Connect to Micro Motion using Service Port and Modbus RTU (8-bit) - Prolink III.

c). Open the Calibrate menu: Device Tools > Calibration > Density Calibration > Point 1 (Air), refer to Figure 1.1 above

Figure 1.2 - Density Calibration (Point 1/ Air)

d). Enter Density of Calibration Fluid in g/cm3, refer to "Density of Air" table as shown below (#Additional Note).

e). Start Calibration.

Figure 1.3 - Calibration in Progress (Air)

Figure 1.4 - Calibration was Successful (Air)

2). Density Point 2 (Water) Calibration

#To perform the high-density calibration:

a). Fill the sensor with a high-density fluid, such as water.

→To ensure stable density, make sure the fluid in the flow tubes remains completely free of gas bubbles during the calibration.

b). Open the Calibrate menu: Device Tools > Calibration > Density Calibration > Point 2 (Water).

Figure 1.5 - Density Calibration (Point 2/ Water)

c). Enter Density of Calibration Fluid in g/cm3, refer to "Density of Water" table as shown below (#Additional Note).

d). If possible, shut off the flow. Otherwise, pump the fluid through the sensor at the lowest flow rate allowed by the process, refer to "Maximum Flow Rates for MicroMotion Sensors" table as shown below (#Additional Note).

e). Start Calibration.

Figure 1.6 - Calibration in Progress (Water)

Figure 1.7 - Calibration was Successful (Water)

#Additional Note:

1). Density of Air

2). Density of Water

3). Maximum Flow Rates for MicroMotion Sensors

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