Eddy current distance sensor HL Series

digitalsmallclosed circuit

HL Series high-temperature displacement sensors provide accurate noncontacting measurement of conductive surface motion in hostile environments. Thermal compensation techniques that maintain sensitivity and linearity with small zero shifts make these accurate high temperature measurements possible. ZSY’s sensors feature laser-welded Inconel construction, making them perfect for a variety of extreme environment applications. The sensors use the versatile ZED82 family of signal conditioning electronics. Single channel systems are available in the NEMA-enclosed ZED82 or bench-top/ rack-mountable ZED82. The NEMA enclosure houses an internal power supply, digital panel meter and window kit. Up to eight measuring channels are available in the rack-mountable ZED82. (See ZED82 data sheet for a complete description and additional specifications for these electronics.) MAIN FEATURES For applications requiring high accuracy, high reliability, and structural integrity. Operating temperatures from -320°F to +1,000°F (+1,200°F short term). Displacement systems withstand pressures up to 3500 or 5000 psi. Dual-coil sensor design effectively minimizes radiation effects. Hermetically sealed and laser welded. Unaffected by environmental contaminants. -Application area- Typical Applications Nuclear reactors Steam and gas turbines Turbine and rocket engines Chemical processes Research projects High temperature processing -Measuring principle- Each sensor has dual coils inside the corrosionresistant case. In operation, an electromagnetic field generated by the active coil penetrates the front of the sensor to induce eddy currents in a conductive target within the sensor’s range.