Emerson Process Management 5300 manual Vapor Compensation

Rosemount 5300 Series

Reference Manual

00809-0100-4530, Rev BA July 2009

Figure C-13. Check if Dynamic Vapor Compensation is supported.

The Rosemount 5300 uses a reference reflector mounted on the probe at a certain distance to estimate the dielectric constant of the vapor. The transmitter knows where the reference reflector pulse should have been if there were no vapor present. However, since there is vapor in the tank, the reference reflector pulse will appear beyond the actual reflector point. The distance between the actual reflector point and the apparent reflector point will be used to calculate the vapor dielectric constant. The calculated dielectric constant is then dynamically used to compensate for changes in vapor dielectric constant and eliminates the need to do any compensation in the control system.

To check if the Dynamic Vapor Compensation function is supported, do one of the following:

•If probe type 4U or 4V is mentioned in the model code on the label, the device supports Vapor Compensation.

Model Code: 530xxxxxxx4Uxxxxxxxxx or 530xxxxxxx4Vxxxxxxxxx

•In RRM:

1.Connect to the device.

2.Right click on the device and select Properties.

Vapor

Compensation

3.If “Vapor Compensation” is mentioned in the Device Software Configuration 2 list, the device supports Vapor Compensation.

•In 375 Field Communicator, if Vapor Compensation is supported, it can be found with the [3, 2, 2, 1] HART sequence

NOTE!

Vapor compensation is supported for Product Level measurement mode only.

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