These are ideal for flow switch applications where dirt or particulate matter is in the flow media that could foul mechanical flow switch devices. They have no moving parts and operate on the principle of thermal conductivity of the media. They can be used in oil applications, water/glycol, chemicals, DI water, and a variety of other process media. They are not harmed by overflow conditions and can monitor very low flow rates with better that 1% repeatability.
Typically the media temperature for calorimetric flow switches must not exceed 80C. Pressures are typically in the 100 Bar max range, and the possibility of coating of the sensing surfaces (depending on the flow media properties) can result in reading errors.
Media with Bio Wastes should not be monitored with Calorimetric Flow Switches.
$300 – $2,000