The LZ-19 Series of LVIT (Linear Variable Inductance Transducer) position sensors are contactless devices designed for use in factory automation or assembly machinery applications where space is a premium, as well as for external mounting on pneumatic cylinders to sense rod position. The LVIT is offered in nominal full scale ranges from 2.5 to 750 […]
LVDT
Signal conditioner handles digital/analog comm for AC-LVDTs, RVDT, or LVRT half-bridge sensors
The NewTek NTC-6000 Qwik-Cal LVDT Signal Conditioner completes the measurement system for AC-operated LVDTs by providing the excitation and digital output required by many of today’s laboratory, industrial automation, and process control applications. Without internal electronics, AC-LVDTs can operate in extreme environments but require the NTC-6000 Signal Conditioner to convert position feedback into readable output […]
ICs for interfacing inductive sensors, Part 1
Designers who use inductive proximity sensors have a choice of high-performance signal-conditioning interface ICs, each offering different sets of features, functions, and capabilities. In two predecessor features (see References), we looked at the inductive proximity sensor and its basic operation (see References) but did not look at the electronic interface circuit for this widely used […]
How is LVDT technology used for sensing?
Linear variable-differential transformer (LVDT) technology’s capability to accurately measure linear movement is used to provide a position to electrical output for pressure, acceleration and force measurements. For example, in a pressure sensor, the sensing element is a diaphragm that moves a rod or cylindrical core inside the coils of a differential transformer to change the […]
LHA-19-R series hermetically sealed AC-LVDTs
Alliance Sensors Group, a div of H.G. Schaevitz LLC, has expanded its linear position sensor line with the LHA-19-R series AC-LVDTs (Linear Variable Differential Transformers). These rugged yet high precision linear sensing devices are hermetically sealed, contactless devices with a radial connector designed for industrial and commercial applications such as factory automation, metal and paper […]
NewTek contactless rotary position sensors
NewTek Sensor Solutions offers the RV series of rotary position sensors that measure and provide feedback on the rotary displacement of rotating elements in industrial benchtop and test and measurement applications. While featuring a full 360° mechanical range, these RVDTs provide an output proportional to shaft rotation over a range of ±30° or more in […]
LVDT/RVDT/resolver simulator module occupies just one PXI slot
Pickering Interfaces launched its model 41-670, a single module that can function as an LVDT, RVDT or resolver simulator. Occupying just one PXI or LXI chassis slot, the programmability of the module means that it minimizes the amount of hardware required. Also, since it sits in a PXI chassis alongside a customer’s other instruments, additional […]
LVDT electronics, Part 2: Interface circuitry
The interface electronics for the LVDT must excite the primary-side winding with a sine wave and then demodulate the two resultant secondary-side waveforms; modern ICs make this analog-signal process fairly straightforward. Part 1 of this FAQ looked at the basics of LVDT excitation, demodulation, and waveforms. This part looks at two standard ICs which implement […]
LVDT electronics, Part 1: Excitation and demodulation
The interface electronics for the LVDT must excite the primary-side winding with a sine wave and then demodulate the two resultant secondary-side waveforms; modern ICs make this analog-signal process fairly straightforward. The first two parts of this LVDT article (see References) looked at the LVDT transducer itself, along with its attributes and history. This second […]
NewTek spring-loaded LVDTs
NewTek Spring-Loaded LVDTs are used for surface measurement of paper, rubber, paneling, and other materials as part of quality control processes in sawmill, wood processing, paneling, rubber, and automotive production plants. Outfitted with precision wheels and other accessories for active monitoring of materials along a line or conveyor, the Spring-Loaded Gage Heads are mounted at […]
