Detecting process malfunctions in time
EGE has extended its range of inline flow and temperature controllers, adding sensors for low flow rates. The new SDN 552/5 and SDN 552/6 series detect flow rates between 50 and 2.000 ml/min as well as media temperatures from 0 to +60 °C, ensuring space-saving monitoring at reduced acquisition costs. Users can choose between sensors with two analog outputs (4...20 mA), two switching outputs, or one analog and one switching output for flow and temperature data. Equipped with a three-digit digital display, the sensors are easy to program: the parameters limit value, hysteresis, NO/NC, time on/off delay and average value can be adjusted to the requirements of specific applications. Current readings and stored parameters can be accessed anytime. The programming functions are secured by an access code which can also be programmed. The sensors are based on the thermodynamic principle and have no moving parts which protrude into the medium. They withstand pressures up to 10 bar and feature IP65 protection. The units are fitted into pipes via a pipe coupling or a hose adapter. Installation on a base plate is possible via integrated threaded bushes. Optionally, a metal installation plate is also available.
Thermal Flow Sensors use the calorimetric principle and are suited to a wide range of flow monitoring applications. They are easy to install and independent of temperature and pressure. These thermodynamic flow controllers don't have any moving parts, which means they are robust and resistant to soiling. Controllers for fluids such as water, glycol mixtures or chemicals are avaible, as are sensors for gases such as air and carbon dioxide.
Intrinsically safe sensors based on ATEX for explosive and hazardous areas are also available. Additional variations consist of high temperature sensors up to 160 °C, special sensors made from such materials as Hastelloy, Monel, titanium and tantalum with high resistance to chemicals, and programmable flow sensors with digital displays. The flow controllers are either screwed into the side of the pipe or added to the line itself in the form of inline sensors.
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