The LDI-G19 Series of LVIT (Linear Variable Inductive Transducer) spring-loaded position
sensors from Omega are contactless devices designed for dimension measurements in QA
labs, or position measuring applications in factory automation systems 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. LDI-G19s are offered in nominal full scale ranges from 6.35 to 100 mm (0.25 to 4.0")
with excellent resolution and high stroke-to-body-length ratios. The maximum tip contact
force on the item being measured is 1 pound.
LDI-G19 sensors have a 19 mm (0.75") diameter aluminum or stainless steel body with a
1/2-20 UNF-2A thread 38 mm (1.5") along with two 19 mm (0.75") hex jam nuts for
drop-in installation in place of a spring-loaded DC LVDT gage head. These sensors utilize a
probe equipped with a No. 9 contact tip and are offered with a PT02-10-6P connector.
Operating from a variety of DC voltages, these sensors are available with a choice of one of four
analog outputs. Calibration and set-up is simplified with one wire field programming feature, this
provides the ability to match the endpoints of the sensor's analog output with the ends of the
range of motion of the assembly to which the sensor is attached. This feature permits a user to
optimize the position measuring system's resolution over its full range of motion.
Specifications: Analog I/Os:
0 to 10V output with 12 to 30V input, 35 mA max;
4 to 20 mA (3-wire) output with 18 to 30V input, 60 mA max at 75°C (167°F max) Measuring Range: 25 to 200 mm (1 to 8") full scale Linearity Error: ±0.15% of Full Scale Output (FSO) typical, ±0.25% max Resolution: 0.025% of FS Update Rate: 300 Hz nominal Operating Temperature: -20 to 85°C (-4 to 185°F) Temperature Coefficient: 0.015% of FS/degree°C Vibration: 5 to 20 Hz, 0.5" p-p; 20 to 2000 Hz, 4.2 g p-p Shock: 1000 g, 11 ms Terminations: IP67 Humidity: 95% RH, non-condensing Housing Material: Stainless steel