H. G. Schaevitz LLC Alliance Sensors Group has expanded its sensor product offering by adding a line of LR-19 Series Inductive Linear Position Sensors using LVIT Technology; contactless devices designed for factory automation and a variety of industrial or commercial applications. With their compact design, superior performance, and excellent stroke-to-length ratio, LR-19 sensors are ideal for industrial testing laboratories and OEM applications.
As the demand for increased control and functionality has increased over the years, sensor- instrumented cylinders are becoming more important in the heavy industry, subsea, and mobile equipment worlds. Position feedback sensors for hydraulic or pneumatic cylinders have most commonly used one of three technologies: Magnetostrictive (MLDTs), Variable Resistance (Pots), and Variable Inductance (LVITs) sensors. While other sensor technologies have occasionally been used in this application, the focus of this article is the comparison among these three most popularly used technologies.
Alliance Sensors Group is pleased to announce the introduction of the SS-7 series LVIT (Linear Variable Inductive Transducer) designed for subsea environments and the demands of Oil and Gas Exploration. Ruggedness, ease installation and the ability simply set the end points in the field lowers the cost of ownership is dramatically reduced without sacrificing accuracy specifications.
H.G. Schaevitz LLC dba Alliance Sensors Group introduces its latest LVDT signal conditioner, the highly advanced S2A. This LVDT signal conditioner offers smart and fast LVDT/RVDT setup and has been engineered to work with the widest range of LVDTs, RVDTs, and inductive half-bridge sensors including 3-wire GE LVRTs and GE gas turbine buck-boost style LVDTs. The signal conditioning module has cyber security tamper prevention and notification features that no other manufacturers have even considered, providing confidence that the unit has not been compromised.
Alliance Sensors Group has released its LV-45 series inductive, contactless linear position sensor using LVIT Technology. The LV-45 linear position sensors are specifically designed for measuring applications requiring rugged devices, whether measuring position of steam turbine valves, mounted in a paper mill head box or calendar roll stand, or outdoors fastened to a building, bridge or structure. The LV-45 series was designed after identifying the wants and needs of engineers in the industrial world, so LV-45 Series linear position sensors can withstand the high vibration and severe shock environment found in steel, aluminum, and paper mills, as well as extremes of temperature and humidity found in most outdoor applications where many other types of linear position sensors cannot survive.
Alliance Sensors Group has expanded its in-cylinder position sensor product line to include the MHP-7 series linear inductive sensors. These compact inductive linear sensors were designed to be installed into the rear endcap of hydraulic cylinders for operation at pressures up to 5000psig. Their 1-inch hex aluminum or stainless steel housing are ideal for mobile hydraulics, factory automation machinery, or oil and gas exploration equipment, and mount to the cylinder with a standard male o-ring port thread.Features of the MHP-7:
- No magnet required
- Compact 1-inch hex aluminum or stainless steel housing
- Contactless- no wear from cycling or dithering
- Ranges from 25 to 600 mm (1 to 24 inches)
- Excellent stroke-to-length ratio
- SenSet for field scalability of analog output
H.G. Schaevitz LLC dba Alliance Sensors Group introduces the S1A AC-LVDT Signal Conditioner that offers smart and fast LVDT setup with built-in null indication and simple front panel pushbuttons to set zero and full scale. Engineered to work with the widest range of AC-LVDTs, RVDTs and inductive half-bridge sensors including 3-wire GE LVRTs and GE gas turbine LVDTs with the buck-boost, the S1A DIN rail module supports LVDT operation and indicates most common failures.
Alliance Sensors Group has introduced the SS-7 series LVIT (Linear Variable Inductive Transducer) designed for subsea environments and the demands of Oil and Gas Exploration. Ruggedness, ease installation and the ability simply set the end points in the field lowers the cost of ownership is dramatically reduced without sacrificing accuracy specifications. The SS-7 is designed to be embedded into a hydraulic cylinder and utilizes the gun-drilled piston rod as a target, sensing it’s position with-out the need for a magnet. The SS-7 series can be submerged to a depth of 12,000 ft or installed in a PBOF (pressure balanced oil filled) chamber to provide position feedback on Blow Out preventers, ROVs and relief valves.These transducers have the following features:
- Uses Piston Rod as target
- 316 Stainless Steel 25mm diameter housing
- Measurement ranges from 1 to 24 inches (25 to 600 mm)
- Operates to 5200 psi or 12,000 feet (3000 m) depth
- Contactless; no wear-out
- DC voltage or current analog output
- SenSet Field Adjustable Scaling
Alliance Sensors Group has expanded its line of LVDT/RVDT signal conditioners to include the SC-100 DIN-rail mountable AC-LVDT Signal Conditioner module that offers smart and fast LVDT setup with built-in null indication and simple front panel pushbuttons to set zero and full scale. The SC-100 is engineered to work with the widest range of AC-operated LVDTs, RVDTs, and inductive half-bridge position sensors and was specifically designed to be compatible with both Marposs and Solartron analog pencil gaging probes.
H.G. Schaevitz LLC Alliance Sensors is pleased to introduce its GHS-19 series of spring-loaded LVIT (Linear Variable Inductive Transducer) gaging sensors. They are contactless devices designed for dimensional gaging and position measurements in factory automation and in various industrial and commercial applications such as automotive testing, mil/aero test stands, robotic arms, and packaging equipment, where the sensing element cannot be attached to the object being measured. Using LVIT technology with its simple coil design, the GHS-19 series offer excellent stroke-to-length ratios.GHS-19 Features:
- Low cost drop-in replacement for spring-loaded LVDTs, with same connector and pinouts
- 0.75 inch (19 mm) diameter aluminum or stainless steel body with1/2-20 mounting thread
- EXCELLENT stroke-to-length ratio means much shorter housings
- Full scale ranges from 0.5 to 4.0 inches (13 to 100 mm)
- 1 pound (0.45 kgf) maximum tip force
- Contactless operation prevents sensor wearout from dithering or rapid cycling