Omega HHT21A Automobile Parts User Manual
Contents
1. A Industrial Water amp Wastewater Treatment lA pH Conductivity amp Dissolved Oxygen Instruments Laser Tachometer Shop online at omega com SEOMEGA www omega com e mail info omega com ERTIFIED CORPORATE QUALITY CORPORATE QUALITY STAMFORD CT MANCHESTER UK M3942 0303 omega com NEOMEGA OMEGAnet Online Service www omega com Internet e mail info omega com USA ISO 9001 Certified Canada Servicing North America One Omega Drive P O Box 4047 Stamford CT 06907 0047 TEL 203 359 1660 e mail info omega com 976 Bergar Laval Quebec H7L 5A1 Canada TEL 514 856 6928 e mail info omega ca FAX 203 359 7700 FAX 514 856 6886 For immediate technical or application assistance USA and Canada Mexico Benelux Czech Republic France Germany Austria United Kingdom ISO 9002 Certified Sales Service 1 800 826 6342 1 800 TC OMEGA Customer Service 1 800 622 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN TELEX 996404 EASYLINK 62968934 CABLE OMEGA En Espafiol 001 203 359 7803 FAX 001 203 359 7807 e mail espanol omega com info omega com mx Servicing Europe Postbus 8034 1180 LA Amstelveen The Netherlands TEL 31 0 20 3472121 FAX 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail sales omegaeng nl Frystatska 184 46 733 01 Ka2. 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manuf
3. written consent of OMEGA ENGINEERING INC relative to the product NOTES Safeguards and Precautions 1 Read and follow all instructions in this manual carefully and retain this manual for future reference 2 Do not use this instrument in any manner inconsistent with these operating instructions or under any conditions that exceed the environmental specifications stated 3 Making measurements in close proximity to rotating equipment can be dangerous Keep all loose clothiing and hair away from exposed moving machinery Properly replace all machinery guards after completing measurement 4 The socket on the front of the instrument is for use with a remote charger Only use model R 5 115 Vac or R 6 230 Vac rechargers to charge the instrument 5 The HHT21A has a laser beam light source Do not view the LASER RADIATION IS EMITTED A FROM THIS APERTURE laser beam directly as it could be hazardous to the eyes Do not LASER RADIATION point the laser beam into another we WoO DIRECT EYE ExPosune person s eyes Do not view the E n laser beam with telescopic devices 6 With exception of replacing the batteries this instrument is not user serviceable For technical assistance contact the sales organization from which you purchased the product TABLE OF CONTENTS SPECIFICATIONS seere OVERVIEW OPERATION sisson p E USING THE HHT21A WITH A REMOTE OPTICAL SENSOR HHT20 ROS sccseseccessescse
4. RE RETURNING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have the FOR NON WARRANTY REPAIRS consult OMEGA following information available BEFORE for current repair charges Have the following contacting OMEGA information available BEFORE contacting OMEGA 1 Purchase Order number under which the product 1 Purchase Order number to cover the COST was PURCHASED of the repair 2 Model and serial number of the product under 2 Model and serial number of the product and warranty and 3 Repair instructions and or specific problems 3 Repair instructions and or specific problems relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2003 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior
5. Where Do I Find Everything I Need for Process Measurement and Control ar USA C OMEGA Of Course Shop online at www omega com TEMPERATURE 4 Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies lt Wire Thermocouple RTD amp Thermistor A Calibrators amp Ice Point References A Recorders Controllers amp Process Monitors l Infrared Pyrometers PRESSURE STRAIN AND FORCE 4 Transducers amp Strain Gages A Load Cells amp Pressure Gages l Displacement Transducers A Instrumentation amp Accessories FLOW LEVEL l4 Rotameters Gas Mass Flowmeters amp Flow Computers WA Air Velocity Indicators 4 Turbine Paddlewheel Systems A Totalizers amp Batch Controllers pH CONDUCTIVITY 4 pH Electrodes Testers amp Accessories WA Benchtop Laboratory Meters 4 Controllers Calibrators Simulators amp Pumps l Industrial pH amp Conductivity Equipment DATA ACQUISITION WA Data Acquisition amp Engineering Software 4 Communications Based Acquisition Systems LY Plug in Cards for Apple IBM amp Compatibles 4 Datalogging Systems A Recorders Printers amp Plotters HEATERS l Heating Cable l Cartridge amp Strip Heaters L Immersion amp Band Heaters A Flexible Heaters b Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL bt Metering amp Control Instrumentation WA Refractometers l4 Pumps amp Tubing A Air Soil amp Water Monitors H H i 2 1 A
6. actured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFO
7. d style fluorescent light and observing 7200 2 RPM In countries with 50 Hz power line frequency the display will read 6000 2 RPM NOTE The Tachometer will not correctly read on energy efficient fluorescent lights BATTERIES The HHT21A SERIES operates from four AA size batteries which are located under the hinged top of the instrument To access these batteries grip the tapered cover at the optical lens end of the instrument and pull up The cover is hinged at the display end of the instrument and pivots fully out SPECIFICATIONS This product is designed for indoor or outdoor use under the following conditions per IEC1010 1 Speed Range Accuracy Resolution Display Display Update On Target Indication Operating Distance Power On Switch Optical System A AVOID EXPOSURE LASER RADIATION IS EMITTED FROM THIS APERTURE ely LASER RADIATION eo AVOID DIRECT EYE EXPOSURE JNS PEAK POWER 3mw WAVELENGTH 650nm CLASS IIIA LASER PRODUCT Time Base Power Source Recharger Input Temperature Humidity 5 RPM to 100 000 RPM I RPM or 01 of reading 1 RPM 6 digit 0 45 high liquid crystal Twice per second Target Bullseye on lower left of display Range Up to 10 feet 3 1 m from leading edge of reflective tape Angle Up to 45 from perpendicular to leading edge of reflective tape Pistol grip trigger may be locked on with latching push button for longer duration mea
8. e located on the rotating shaft The pulse from the reflective tape is received back through a single lens reflex optical system and detected by a photocell inside the instrument The HHT21A then computes the rotational speed and displays it to a resolution of 1 RPM To operate the instrument simply aim it at the reflective tape while holding it at a distance of 1 inch 25 4 mm to 10 feet 3 1 m making sure to observe laser safety precautions Squeeze the pistol grip trigger and read the indicated speed The on target indicator must be on The display is updated up to twice per second For longer duration measurements the trigger latch on the side of the pistol grip handle can be depressed after pulling the trigger and the instrument may be mounted on the 1 4 20 threaded bushing at the base of the handle When the trigger is released the HHT21A will hold the last measurement taken and display it for up 90 seconds On very small shafts the HHT21A will work down to a reflective tape size of approximately 1 8 inch 3 2 mm square However with this small tape size it would be necessary to operate the instrument very close to the rotating shaft and insure it is held steady For normal operation a tape size of approximately 1 2 inch 12 7 mm square or larger is recommended and on very large diameter shafts or for very high speed applications a larger size piece of tape may be required It is also recommended that the reflective tape be v
9. iewed just slightly off the perpendicular The HHT21A will operate at angles from 0 to 45 degrees but best results are obtained by aiming the instrument at the reflective tape at approximately a 10 to 20 degree angle This insures that only pulses from the reflective tape are received by the instrument and minimizes the problem of interference from a highly polished surface or varying ambient lighting USING THE HHT21A R WITH A REMOTE OPTICAL SENSOR The HHT21A R version of the tachometer has a provision for using the optional HHT20 ROS Remote Optical Sensor In addition to the standard built in optics of the HHT21A SERIES a 1 8 inch 3 5 mm phone jack is provided on the front panel of the Tachometer to accept a remote optical sensor plug A toggle switch on the optics panel selects internal or remote operation For applications requiring the remote optical sensor move the Remote Internal switch to the remote position to disable the internal optics of the Tachometer When the trigger is pulled or latched the remote optical sensor can be used for measurements The HHT20 ROS Remote Optical Sensor operates 3 feet 0 9 m and 45 from the reflective tape
10. rvina Czech Republic TEL 420 0 59 6311899 FAX 420 0 59 6311114 Toll Free 0800 1 66342 e mail info omegashop cz 11 rue Jacques Cartier 78280 Guyancourt France TEL 33 0 1 61 37 29 00 FAX 33 0 1 30 57 54 27 Toll Free in France 0800 466 342 e mail sales omega fr Daimlerstrasse 26 D 75392 Deckenpfronn Germany TEL 49 0 7056 9398 0 FAX 49 0 7056 9398 29 Toll Free in Germany 0800 639 7678 e mail info omega de One Omega Drive River Bend Technology Centre Northbank Irlam Manchester M44 5BD United Kingdom TEL 44 0 161 777 6611 FAX 44 0 161 777 6622 Toll Free in United Kingdom 0800 488 488 e mail sales omega co uk It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for human applications MADE US WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA s WARRANTY adds an additional one
11. ssesecseseesessesucsessesessesatsessesessereee CALIBRATION AND SELF TEST ernnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnr BATTERIES CLEANING of the way It may also be convenient to keep a spare supply of reflective tape in the free area underneath this cover The instrument will provide six to eight hours of continuous operation on a single set of batteries depending on the type used The instrument is provided with a built in charging network which works in conjunction with the optional NiCad batteries The optional recharger plugs into the single jack located next to the optical lens at the front end of the instrument Fourteen to sixteen hours is required for a complete recharge When the battery voltage in the HHT21A is getting low the display will blink LO BAT to indicate that the batteries need to be replaced NOTE Only use model R 5B 115 Vac or R 6B 230 Vac rechargers with NiCad batteries Do not attempt to charge non rechargeable batteries ALWAYS DISPOSE OF BATTERIES IN A SAFE AND RESPONSIBLE MANNER CLEANING To clean the instrument wipe with a damp cloth using mild soapy solution Remote Internal Switch Internal Optics Recharger Jack Lens Figure 1 HHT21A R with Optional Remote Sensor HHT20 ROS CALIBRATION AND SELF TEST The HHT21A SERIES is a crystal controlled digital instrument that requires no calibration However the accuracy of the instrument can be checked at any time by aiming it at an ol
12. surements Auto hold of last measurement for 90 seconds Visible laser light source WARNING Do not view the laser beam directly as it could be hazardous to the eyes Do not point the laser beam into another person s eyes Do not view the laser beam with telescopic devices Crystal controlled 4 AA batteries Recharger socket provided for optional rechargeable batteries Max input 7 8 Vdc 50mA 41 F 5 C to 104 F 40 C Maximum relative humidity 80 for temperature up to 88 F 31 C decreasing linearly to 50 relative humidity at 104 F 40 C Dimensions LxWxH 6 13 x 3 25 x 1 75 plus 4 75 handle 155 7 mm x 82 6 mm x 44 5 mm x 120 7 mm Weight 1 25 lbs 0 57 kg OVERVIEW The HHT21A SERIES combines the accuracy and safety of a non contact optical tachometer with the convenience and ease of operation of a pistol grip instrument The instrument provides non contact measurement of rotational speed to an accuracy of 01 of reading It reads RPM directly to the nearest RPM and a on target indicator is provided to verify the instrument is properly aligned on a target and receiving valid information OPERATION The HHT21A measures rotational speed from a single pulse per revolution This pulse is supplied by marking the rotating shaft with a visible reflective tape target The HHT21A is equipped with a built in laser light source providing a bright red beam which is aimed at the reflective tap
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