461955

User Guide Panel Mount Digital Tachometer Model 461950 Introduction Congratulations on your purchase of the Extech 461950 Panel Tachometer. This meter displays continuous readings from 5 to 99,990 rpm. Single pulse activation eliminates the need for special gears when setting up the meter in any given application. Models 461955 (proximity sensor) and 461957 (photoelectric sensor) are also covered in this manual. Careful use of these devices will provide years of reliable service. Specifications Model 461950 Panel Tachometer Range 5 to 99,990 RPM Resolution 0.1 (5 to 999.9) 1 (1000 to 9999) 10 (10.000 to 99,990) Accuracy 0.05% + digit (of reading) Display 0.5 (13mm) 4-digit (9999 count) LED display Display update rate Once per second Power 110/220VAC 50/60Hz 15% Panel cutout dimensions 3.62 x 1.77 (92 x 45mm) Bezel dimensions 3.78 x 1.89 x 2.36 (96 x 48 x 60mm) Meter dimensions/Weight 3.61 x 1.66 x 3.54 (92 x 42 x 90mm) 13.9 oz. (397 g) Model 461957 Photoelectric Sensor Range Up to 6000 RPM (100 Hz) Power 12 - 24VDC 10% Consumption: 40mA max. Response time < 1ms Output NPN transistor Max load 80mA Photo beam color Green Photo beam wavelength 5500 Angstroms Cable length 6 ft (1.8 meters) Model 461955 Proximity Switch Range Up to 36,000 RPM (600 Hz) Power 12 24VDC 10% Power Consumption 10mA max. Object distance detection 0.1 (3 mm) maximum target distance Object size detection 0.07 x 0.11 (2 x 3 mm) minimum size detected Cable length 6 ft (1.8meters) 2 Model 461950 Version 1.7 May 2004