LVDT linear position sensors operate in hazardous locations

Macro Sensors has upgraded its series of intrinsically safe LVDT linear position sensors for use in hostile environments such as gas/ steam turbine plants, chemical process plants and paper mills. 

Rated for operation to 212°F (100°C), the HLR sensors are now UL/ULC listed for hazardous locations Class I, Division 1, Groups A, B, C, D and Class I, Zone 2 by Underwriters Laboratories. Constructed entirely of stainless steel for environmental robustness, the HLR Series LVDT linear position sensors offer reliable and contactless position measurement for critical applications.

A through-bore design makes the LVDT cores accessible from both ends for better mechanical support and core guidance and easy cleanout in dusty or dirty locations.  Sensor lead wires exit through a radially mounted 1/2-14 NPT male threaded conduit fitting for easy attachment to an explosion-proof junction box as well as rigid or flexible conduit. For added protection against environmental elements, electronics can be installed in explosion-proof enclosures and connected to LVDTs using a suitable conduit.

Available in full-scale measurement ranges from  ±1 inch to ±10 inches, units feature repeatability typically better than 0.01% of full scale and non-linearity of less than 0.25% FRO.  

Key highlights:

• Input Voltage 3.0 Vrms (nominal)
• Input Frequency 2.5 to 3.0 kHz
• Linearity Error < ±0.25% of FRO
• Repeatability Error < 0.01% of FSO
• Hysteresis Error < 0.01% of FSO
• Operating Temperature -65 °F to +300 °F -55 °C to +150 °C
• Thermal Coefficient of Sensitivity -0.01%/°F (nominal)
• -0.02%/°C (nominal)
• Vibration Tolerance 20 g to 2 kHz
• Shock Survival 1000 g, 11 ms

Datasheet:  Click here.