Why Use a Calibration and Switching Module?
To ensure proper function of an online analyzer and to protect the equipment for maximum uptime, all process samples must be conditioned to meet an analyzer’s requirements. Conditioning includes verifying that a sample is being inserted into the analyzer at the appropriate pressure, temperature, flow, and filtration level.
Key Features
The CSM is built on the Swagelok MPC platform, utilizing the Swagelok stream selector valve (SSV) product, which allows the user to select the configuration required for the specific system.The standard model described here accepts up to ten process and two calibration fluids, either all liquid or all gas.
The main function of the CSM is to condition and select process streams, or to select a calibration stream for analysis. At a minimum, each system must have two inlets—two process stream inlets, or one process stream inlet and a calibration stream inlet. The system selects a fluid for analysis in response to a pneumatic pressure signal from an external source, typically the analyzer. The signal opens one of the SSV double block-and-bleed valve modules corresponding to the stream containing the fluid to be analyzed.
The Swagelok CSM offers several additional advantages, including:
A variety of sample conditioning configurations available to meet application requirements.
A manual calibration option that allows the operator to calibrate the analyzer at any time.
Color-coded stream identification—process stream inlets will always be blue, calibration streams orange, bypass green, and outlet white.
An integrated flow loop design to ensure consistent delivery times to the analyzer across all streams and eliminate any deadlegs or chance for cross-stream contamination.
A vented air gap that prevents the hazardous possibility of pneumatic air mixing with system fluid under pressure.
A modular design that allows easy maintenance. Individual components can be removed from the assembly by loosening four screws accessible from the top of the panel. There is no risk of accidentally disassembling the whole unit or of upsetting other fluid connections.