The QVLA® process is the LED-based technology which is used by Motion Controls inSight® sensor. The QVLA® process works by utilizing an ultra-stable LED light source to fill a volume with diffuse light. The filled volume, called the “sensing volume” can be almost any enclosed volume. Since Motion Controls is a pneumatic cylinder company, the first use of the inSight® sensor utilized the inside of an air cylinder as the sensing volume. As the sensing volume changes, the amount of light measured in the sensing volume varies and can be resolved into linear or, given the correct shaped sensing volume, rotary motion. This process is performed by our inSight® sensor which is rugged, inexpensive, fast, and non-contact. Thus far, inSight® has been used to sense the position of industrial machinery, replacing traditional potentiometers, LVDT’s, and magnetostrictive sensors all at a reduced cost and higher mean time between failure (MTBF). Our inSight® Series of cylinders is now available with inSight® sensors completely integrated into any size of our D Series air cylinders. InSight® Series cylinders are able to provide position feedback in the same footprint as a normal D Series actuator. The inSight® sensor can also be purchased as a stand alone sensor for custom applications or even licensed for seamless integration into your own product line.
Imagine two enclosed volumes, X and Y, of different sizes but with the same interior reflectivity. If these volumes are flooded with light by sources emitting the same quantity of light, the intensity of light measured within each of these volumes will be different. The larger volume X will have a lower measured light intensity than the smaller volume Y.
The disparity between measured light intensities inside each volume reveals the difference or change in volume, X-Y.
Bellows expansion and/or retraction, fluctuating fluid levels and mechanical movement of walls are all examples of volume changes measurable by the QVLA® Process.
QVLA® is a precise, repeatable and long lasting measurement system working on the simple principle of measuring light intensity within the air cylinder. As the piston moves more cylinder wall is available to absorb light thereby resulting in changing light intensities within the cylinder indicating rod extension.
iNSiGHT® replaces reed switches providing identical electronic outputs, easier set-up by a permanently attached keypad on the outside of the cylinder and can also be used for an end of stroke sensor. Unlike traditional switches, which can be run over with speed, iNSiGHT® establishes “end zones.” Once a position is tripped an “end zone” of switched electrical signal is established.
iNSiGHT® has no magnets or coils, extremely low electrical noise and is inherently wield field immune. It works with steel, aluminum or opaque composite structures.
iNSiGHT® Series cylinder is made in two footprints. The “Dprint” is our basic D Series cylinder line with 1.25″, 1.75″, 2″ and 2.5″ bore cylinders. The “Kprint” is our NFPA K Series cylinder with 1.5″, 2″, and 2.5″ bore cylinders. All typical mountings available.
9 foot cable standard.