The SME (Rheonics transmitter) can be configured in many parameters through the RCP (Rheonics Control Panel). On Calculation tab, after enabling the Expert Mode, users can configure useful calculated parameters, such as temperature-compensated viscosity, density, and concentration values of interest.
See how to obtain and fill the data in RCP for each calculation in the respective support article on the Measurements folder.
SME has a good amount of communication protocols available for the user to handle the measured and calculated data, these are explained below. By default, for some protocols, the compensated values aren’t shown and the user needs to configure the RCP software correctly.
1. Through display - only for SME-TRD
On Calculation Tab, after including the inputs for the calculation, select the line where LCD will show the value and click Load Configuration.
Figure 1: Show calculated value on SME-TRD display.
Changes can be verified on the “Communication” Tab.
2. Analog outputs
In Calculation tab select analog channel to send data.
This can be verified in the “Service” Tab, 4-20mA Settings box.
3. Modbus TCP/IP register
Each measurement can always be accessed at their register address that is displayed at the bottom on Calculation tab. Next table indicates the register for each of the calculated parameters.
Modbus RTU/TCP register
The “Calculation History” button allows you to open a file where the last uploaded models and coefficients for these models are stored. This is for user reference.
4. Profinet and Ethernet/IP parameters
On Profinet and Ethernet/IP, the addresses are the followings. For more information, please visit the next page:
All rheonics inline viscometers and density meters support EthernetIP for connection
Profinet and Ethernet/IP parameter
5. On "Measurement" Tab from RCP
Follow next steps to display the temperature compensated viscosity on the “Measurement” Tab from the RCP.
5.1. Go to the "Settings" tab and on the "Graph Settings" section open the Viscosity drop-down menu and select "Calc. Visc" for calculated viscosity. For calculated density or concentration use the Density drop-down menu.
5.2. With this selection, the "Measurement" tab is updated with the Calculated Parameter instead of showing the standard parameter.
6. Accessing both raw and compensated values through onboard logger
Rheonics SME comes with the ability to store measurement data on an SD-Card. If the unit was ordered with one, then an industrial-grade SD-Card is already pre-inserted in the electronics.
Measurement and diagnostics data is stored on the card giving access to the last 1 year of data. The onboard data logger can be configured to store data for even longer periods of time and at an adjustable duty cycle.
Data can be saved by following the next steps:
6.1. Onboard logger can be accessed from the "Logger" tab, select the last data for the most recent logging and click the download button.
6.2. Click on the “Excel” button, so the save data is directly loaded into an excel file.
6.3. Excel file is going to display all relevant data from each parameter provided.
Excel table will show parameters in order. Raw and calculated values order are the following:
More detailed information about the onboard historian can be found at:Onboard data historian access on the rheonics inline density meters and viscometers