There are two holding registers associated with each of the Do coefficients of the polynomial. Over Modbus (either RTU or TCP) there are a set of registers associated with the density input for the SRV sensors. Ensure Temperature (T) was in ☌ when estimating the polynomial coefficients. Input the coefficients and click "Write". For constant density, edit the value and click "Write".Į. Select between Constant Density or Temperature Dependent Density (Polynomial)ĭ. Look for the "Density (SRV Only)" section: (this is only active when you have a SRV sensor connected to RCP)Ĭ. ), you can use any of the methods described below to upload these into the sensor electronics (SMET).Ī. Once you have the coefficients (Do0, Do1. If you have data in ☏ or °K, then convert temperature to corresponding ☌ before estimating the coefficients. The equation above expects temperature in ☌. If you have a fluid reference table (for example Cannon fluids, Nippon grease), you can fit the density to a polynomial model to get the coefficients. To describe a temperature dependent density, assign values to the coefficients, that reflects the density behavior of your fluid with temperature. To describe a constant density, the coefficient Do0 should be set equal to the constant density value, and all the other coefficients should be set to zero. With this model we can describe a constant density or a temperature dependent density. The Density SRV output can be described as a polynomial of the form:
#Dynamic vs kinematic viscosity software#
The steps below show how the user can set the density on the sensor using the RCP software and Modbus RTU/TCP to get dynamic or kinematic viscosity directly from the sensor electronics as well as on the RCP software.Įnter fluid density to get dynamic and kinematic viscosity from SRV With density input, dynamic and kinematic viscosity can be directly output by the sensor over digital and analog channels without a need for any PC. To get the actual dynamic viscosity or kinematic viscosity from the SRV, the sensor supports input of a constant or temperature dependent density so dynamic and kinematic viscosity values can be estimated and output on the viscosity channel. The default measurement output on viscosity channel assumes a constant density of 1.0 g/cc (1000 kg/m3). SRV measures any change in the process fluid viscosity and density by giving the user an output that is a product of dynamic viscosity and density. Solution home Sensor Commissioning SRV Set density input to SRV inline viscometer for dynamic viscosity and kinematic viscosity outputs
0 kommentar(er)
