
OMEGA 's LE902 series linear encoders work on the principle of counting pulses as a series of graduations move past a detector . These graduations are deposited on a low-temperature- coefficient glass ( quartz glass ) and counted using photodetectors . Because the glass is exceptionally stable , the pitch of the graduations does not change , resulting in inherently good long term stability . Signal conditioning is performed in an in-line electronics assembly which converts signals from the probe head to a digital format which can be plugged directly into a digital readout , computer or PLC via an RS-232 adaptor or the LDN101 network card . SPECIFICATIONS Reading Rate/Sec : 1000 Accuracy : ±0.5 µm ( 20 µin ) Resolution : ±0.5 µm ( 2 µin ) Gauging Speed : 0.5 mm/sec ( 0.020 in/sec ) Operating Temp , Probe : 0 to 80°C ( 32 to 175°F ) Electronics Assembly : 0 to 60°C ( 32 to 140°F ) Storage Temp , Probe : -20 to 80°C ( -4 to 176°F ) Electronics Assembly : -20 to 60°C ( -4 to 140°F ) Calibration Temperature : 20°C ( 68°F ) Environmental Rating : IP65 For full product specifications view pdf file in " Related Links " below