The ZMD Series miniature length sensor is compact in size and easy-to-use, designed for light to medium duty sensing applications. It features a built-in springloaded torsion arm that provides a simple-to- adjust torsion load, allowing the unit to be mounted in almost any orientation, including upside down. Using a 6' circumference wheel, the ZMD can be used on almost any surface, while operating at speeds up to 3000 feet per minute. The housing is a durable, conductive composite material that will eliminate static build up. Whether you need to measure speed, position, or distances, the ZMD series contact rotary sensor is the ideal solution.
SPECIFICATIONS ELECTRICAL Input Voltage: 4.75 to 28 Vdc maximum for temperatures up to 85°C; 4.75 to 24 Vdc for temperatures between 85 to 100°C (185 to 212°F), reverse polarity protected Input Current: 100 mA max (65 mA typical) with no output load Outputs: NPN open collector transistor, 20 mA maximum current Maximum Frequency: 200 KHz standard Noise Immunity: Tested to BS EN61000- 6-2; BS EN50081-2; BS EN61000-4-2; BS EN61000-4-3; BS EN61000-4-6, BS EN500811 [Tested with 2 m (6.6') cable] Symmetry: 180° (±18°) electrical Quad. Phasing: 90° (±22.5°) electrical Minimum Edge Sep: 67.5° electrical Accuracy: Within 0.017° mechanical or 1 arc-minute from true position (for PPR>189) MECHANICAL Maximum Mechanical Speed: 6000 RPM. Higher speeds may be achievable, contact the factory Shaft Material: Stainless Steel Shaft Tolerance: +0.0000/-0.0004' (+0.000/-0.010 mm) Radial Shaft Load: 5 lb., rated load of 2 to 3 lb for maximum bearing life Axial Shaft Load: 5 lb., rated load of 2 to 3 lb for maximum bearing life Starting Torque: 0.05 oz-in IP50; 0.4 oz-in IP65 Electrical Connection: 2 m (6.6') cable, (foil and braid shield, 24 AWG conductors). Drain wire internally connected to case Mounting: Pivot Shaft can be mounted from either side of the housing and is field reversible Housing: Stainless steel fibers in a high temperature nylon composite Weight: 142 g (5 oz) typical ENVIRONMENTAL Operating Temperature: -20 to 85°C (-4 to 185°F) Storage Temperature: -25 to 85°C (-13 to 185°F) Humidity: 98% RH non-condensing Vibration: 10 g @ 58 to 500 Hz Shock: 80 g @ 11 msec duration Sealing: IP50