Datasheet -- 1GT101DC 1GT101DC GT Series Hall-Effect Gear-Tooth Sensor Features ● Representative photograph, actual product appearance may vary. ● ● ● Due to regional agency approval requirements, some products may not be available in your area. Please contact your regional Honeywell office regarding your product of choice. ● ● ● ● Senses ferrous metal targets Digital current sinking output (open collector) Better signal-to-noise ratio than variable reluctance sensors, excellent low speed performance, output amplitude not dependent on RPM Sensor electronically self-adjusts to slight variations in runout and variations in temperature, simplifying installation and maintenance Fast operating speed - over 100 kHz EMI resistant Reverse polarity protection and transient protection (integrated into Hall I.C.) Wide continuous operating temperature range Typical Applications Automotive and Heavy Duty Vehicles: ● ● ● ● Camshaft and crankshaft speed/position Transmission speed Tachometers Anti-skid/traction control Industrial: ● ● ● ● ● Sprocket speed Chain link conveyor speed and distance Stop motion detector High speed low cost proximity Tachometers, Counters file:///Y|/Names/Tarankov/pdf/357/1GT101DC.htm (1 of 4)15.05.2006 20:42:20 Datasheet -- 1GT101DC Description 1GT1 Series Tooth Sensors use a magnetically biased Hall effect integrated circuit to accurately sense movement of ferrous metal targets. This specially designed I.C., with discrete capacitor and bias magnet, is sealed in a probe type package for physical protection and cost effective installation. Output is digital, current sinking (open Collector). Reverse polarity protection is standard. If power is inadvertently wired backwards, the sensor will not be damaged. Optimum sensor performance is dependent on the following variables which must be considered in combination: ● ● ● ● Target material, geometry, and speed Sensor/target gap Ambient temperature Magnetic material in close proximity 1GT101DC GT Series Hall-Effect Gear-Tooth Sensor Product Specifications Product Type Hall-Effect Gear Tooth Sensor Package Style Plastic Probe Supply Voltage 4.5 Vdc to 24.0 Vdc Output Type Sink Termination Type Lead Wire Operating Temperature Range -40 °C to 150 °C [-40 °F to 302 °F] Output Voltage 0.4 Vdc max. Vane and Geartooth Target Material GT Target RPM Switching Time Rise (10 % to 90 %) Cold Rolled Steel, 1018 or Low in Carbon (Annealed) 10 RPM min., 3600 RPM max. 15 µs max. Switching Time Fall (90 % to 10 %) 1.0 µs max. Operate Point 3.3 ° ± 1.25 ° [3,28 ° ± 1,13 mm] file:///Y|/Names/Tarankov/pdf/357/1GT101DC.htm (2 of 4)15.05.2006 20:42:20 Datasheet -- 1GT101DC Release Point 4.4 ° ± 2.50 ° [4,16 ° ± 2.21 mm] Availability Global Comment Values measured using 1 kOhm pull-up resistor, millitesla (gauss x 10-1), and geartooth target dimensions. Supply Current (max. @ 25 °C) 20 mA Output Current (max.) 40 mA GT Target Min Tooth Height 5.06 mm [0.200 in] GT Target Min Tooth Width 2,54 mm [0.100 in] GT Target Min. Tooth Spacing 10,16 mm [0.400 in] GT Target Thickness 6,35 mm [0.250 in] GT Target Diameter 101,6 mm [4 in] GT Airgap 1,02 mm to 2,03 mm [0.040 in to 0.080 in] Leakage Current max. 10 µA Differential 8.4 ° ± 3.70 ° [7,45 ° ± 3,34 mm] Series Name GT Series 1GT101DC GT Series Hall-Effect Gear-Tooth Sensor file:///Y|/Names/Tarankov/pdf/357/1GT101DC.htm (3 of 4)15.05.2006 20:42:20 Datasheet -- 1GT101DC 1GT101DC GT Series Hall-Effect Gear-Tooth Sensor PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices, or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury. MISUSE OF DOCUMENTATION ● ● The information presented in this product sheet (or catalog) is for reference only. DO NOT USE this document as product installation information. Complete installation, operation and maintenance information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in death or serious injury. © Copyright Honeywell Inc.1998-2004 All rights reserved. file:///Y|/Names/Tarankov/pdf/357/1GT101DC.htm (4 of 4)15.05.2006 20:42:20