AC-Operated

Separate core LVDTs	AC-Operated (inc. miniature/ hazardous locations)PR750/PR812/PRH812 Series CD 375 Series HAS/HSAR 750 Series SQ 1250 Series HSTA/HSTAR 750 Series HLR 750 Series	DC-Operated DC750/SE750 Series HSD/HSDR 750 Series HSE/HSER 750 Series	Loop powered SI 750 Series HIS/HSIR 750 Series
Measuring range	±0.63 mm to ±250mm	±1.25 mm to ±500mm	2.5 mm to 100 mm
Input Voltage	3.0 Vrms	±15-24V DC, ±25…30 mA	10-28V DC, 4-20mA
Input Frequency	2.5-3.3 kHz	250 Hz	50 Hz
Non-Linearity	<±0.25% F.S.O	<±0.10% F.S.O	<±0.25% F.S.O
Coil seal (IEC)	IP61, IP64, IP68	IP62, IP68	IP62
Operating Temperature	-55℃ to +200℃	-20℃ to +105℃	-30℃ to +80℃
Thermal Coefficient of Sensitivity	-0.02%/℃	-0.02%/℃	-0.027%/℃

Linear Variable Differential Transformer (LVDT) is an electromechanical transducer that converts the rectilinear motion of a target to a corresponding electrical signal. In the simplest form of LVDT, the design consists of a primary and two secondary windings with a separate cylindrical core which passes through the contre of the housing tube without any physical contact to the inside surface. The LVDT’s primary winding is energized by an alternating current of constant frequency from an electronic oscillator and the excitation produces alternating magnetic field in the centre of the transducer which induces alternating voltages that are included in the two secondary windings depends on the position of the core. Movement of the core within the magnetic field causes the change of secondary windings outputs and when the core is in the centre of the two secondary windings, the coupling of the primary winding equals to the two secondary windings, therefore, the output “0” is derived.

Please view our PDF brochures relating to this product. Linear Variable Differential Transformers (LVDTs)