The 9x20 series by Gurley Precision Instruments is a High resolution incremental rotary encoder designed for industrial grade applications wherein it requires a superior resolution and accuracy. This model is available in two basic versions which consist of variation in mechanical configurations. All units have a standard specification of having an LED illumination which can last by about 100,000 hours. Also, its bearings are sealed for contamination resistance.. In addition, its sealing is protected with IP66 designed for harsh environment.
High Performance - Industrial RuggednessThe Series 9x20 is a family of optical incremental encoders designed for industrial-grade applications that require high resolution and high accuracy. The Series 920 isavailable in two basic models and a variety of mechanical configurations. All 920s sharethese features:LED illumination for long life (100,000 hours)Differential photo-detectors for signal stabilitySingle-board, surface-mount electronics for reliabilityRS-422 differential line driver output for noise immunityZero index signalSealed bearings for contamination resistance (ABEC 7 in solid shaft version;ABEC 5 in blind hollow shaft version).IP66 sealing for harsh environments (IP64 at the shaft exit)Resolutions up to 4500 cycles/rev (18,000 counts/rev); optional indexformats; optional input voltage.Dual read heads for improved accuracy; monolithic integrated ASIC forinternally interpolated resolutions up to 36,000 cycles/rev (144,000 counts/rev);watchdog circuit.!!!!!!!Model 9120Model 9220:
Maximum line count on disc4500Maximum cycles/rev74,50036,000Maximum