GTN Series Hall Effect Gear Tooth Sensors Features Benefits • Digital current sinking output (open collector) • Better signal to noise ratio than variable reluctance sensors, output amplitude not dependent on speed • Integrated reverse polarity protection • Resistant to damage from incorrect wiring • Measuring range 2 Hz to 9 KHz (depending on target) • Suitable for most vehicle applications • Rugged package with connectorized output • Physical protection and cost effective installation. • Diagnostic detection of sensor power supply • Allows breakages or short circuits in sensor power supply to be detected. Description Installation GTN Series Gear Tooth Sensors use a magnetically biased Hall effect integrated circuit (IC) to accurately sense movement of ferrous metal targets. This specially designed IC, together with protection and diagnostic circuitry and a permanent magnet, is sealed in a rugged probe type package. The sensor is flange mounted with a range of possible lengths, eliminating adjustment and positioning. Connection is by AMP Superseal 1.5 Series. Operation The flux density of the permanent magnet alters when approached by ferrous metal. This is detected by the Hall IC. If the sensor is positioned at the circumference of a revolving gear wheel, for example, it detects teeth and tooth spaces, supplying a digital pulse output with frequency proportional to gear wheel speed. Optimum performance is dependent on the following variables which must be considered in combination : target material, geometry and speed, sensor/ target gap, ambient temperature and stray fields. An integrated electronic diagnostics feature enables detection of open or short circuits in the power supply line by monitoring levels in the sensor output. Typical Applications The compact design and rugged construction make this sensor the preferred solution for applications such as : • Measuring rpm in gearboxes • Monitoring rpm and position of crankshafts and camshafts • Pulse counters • Tachometers ! WARNING MISUSE OF DOCUMENTATION • The information presented in this product sheet (or catalogue) 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. Sensing and Control Technical Data Order Guide Supply voltage 4.5 V to 32 V absolute maximum GTN Geartooth Sensors 8 V to 16 V nominal (12 V version) 21 V to 32 V nominal (24 V version) GTN1A111 12 V, connector position 1, 40 mm probe length Current input 20 mA nominal (max 40 mA) GTN1A112 12 V, connector position 1, 53 mm proble length Output data (open collector) high 18 kOhm GTN1A113 12 V, connector position 1, 77.75 mm proble length low 1 kOhm (12 V version) GTN1A114 12 V, connector position 1, 83.25 mm probe length 1.5 kOhm (24 V version) GTN1A115 12 V, connector position 1, 95 mm probe length 4.5 V to 15 V (12 V version) GTN1A116 12 V, connector position 1, 100 mm probe length 4.5 V to 32 V (24 V version) GTN1A117 12 V, connector position 1, 125 mm probe length 10% to 90% 15 us (according to external 90% to 10% 1 us wiring, Rpull-up and Upull-up) GTN1A211 24 V, connector position 1, 40 mm probe length GTN1A131 12 V, connector position 3, 40 mm probe length Pull-up voltage Switching performance: rise time fall time Measuring range 2 Hz to 9 kHz (depends on target) Degree of protection IP 67, IP 68, IP 69K Ambient temperature -40 °C to +125 °C Other permutations are possible, contact Honeywell for details Up to +150 °C briefly, max 12 h Vibration Vibration test in accordance with DIN IEC 68 T2-6 Shock Shock in accordance with DIN ICE 68 T2-27 Repetitive shock in accordance with DIN ICE 68 T2-29 EMC protection Included, details available on request Mounting Dimensions in mm Warranty/Remedy Honeywell warrants goods of its manufacture as being free of defective material and faulty workmanship. Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during that period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. While we provide application assistance, personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application. Specifications may change at any time without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. Sales and Service Honeywell serves its customers through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing or name of the nearest Authorised Distributor, contact your local sales office or: INTERNET: www.honeywell.com/sensing E-mail: [email protected] This publication does not constitute a contract between Honeywell and its customers. The contents may be changed at any time without notice. It is the customer’s responsibility to ensure safe installation and operation of the products. Detailed mounting drawings of all products illustrated are available on request. © Honeywell 2001 Honeywell Control Systems Ltd www.honeywell.com/sensing Newhouse Industrial Estate Motherwell ML1 5SB Scotland, UK 100433-EN Issue 2 11/01 UK07 Printed in the United Kingdom on environmentally friendly paper