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Watchman 3100 User Manual LR and SR Models

1. 290 0001 26 Rev A Nov 03 57 Troubleshooting Watchman 3100 User Manual 13 2 Diagnostic LEDs The interface board and the rangefinder panel hold the three LEDs described in Table 9 below Table 9 Diagnostic LEDs Normal des Colour Label Function Description Operation Yellow Flashing LED 1 DATA OUT Data is being transmitted Since data is sent after each laser burst this also indi Cates the laser firing rate Red Off LED 2 POINTER ON The laser pointer is programmed ON default is OFF Observe all safety pre cautions Green On LED 3 POWER ON Power is being supplied to the rangefinder 58 290 000126 Rev A Nov 03 Watchman 3100 User Manual Troubleshooting 13 3 Operation IMPORTANT For terminal block cabling refer to wiring guide inside lid 1 Check all external cabling connections and associated equipment 2 If the POWER ON LED is off check that All heating and cooling equipment is functioning The unit s thermal cutoff switches are self resetting and the unit is disabled and re enabled without warning Thermal Protec tion page 36 Correct voltage is present at the correct terminals Fuses on the interface board are installed and functional Table 6 page 55 The fuses are protected by reusable fuse covers 3 Ifthe unit is not communicating check the DATA OUT LED Not flashing Program the unit for continuous mode
2. a Figure 4 Unit Top View 205 0001 06 290 0001 26 Rev A Nov 03 23 Installation Watchman 3100 User Manual 1 4 NPT FOR AIR CURTAIN ONE PORT ON EITHER SIDE PRESSURE AND FLOW DEPEND ON APPLICATION 120 VAC 50 60 Hz POWER SUPPLY OPTIONAL 8 X 1 25 1 4 NPT FOR PURGE 2 PLCS OR ALTERNATE MOUNT Figure 5 Unit Cross Section 205 0001 06 M8 X 1 25 4 PLCS Figure 6 Unit Bottom View 205 000106 24 290 0001 26 Rev A Nov 03 Watchman 3100 User Manual Installation FIELD INTERFACE MODULE OPTECH RANGEFINDER 12 30 VDC POWERED 147 Figure 7 Unit Front View 205 000106 8 3 Field Interface AC LINE FUSE F3 TERMINAL BLOCK FIELD INTERFACE ae ES RS422 TX DATA COMMON TRIGGER 120V LIVE 120V NEUTRAL CHASSIS TO BE USED ONLY WITH OPTIONAL AC DC SUPPLY RANGEFINDER INTERFACE RANGEFINDER FUSE NOTE1 FOR 24V DC OPERATION INSTALL FUSE F1 AND F2 FUSE F2 REQUIRED ONLY FOR HEATER OPTION DATA OUT FOR 120V AC OPERATION INSTALL FUSE F3 AND F1 NOTE THAT ONLY F3 OR F2 CAN BE INSTALLED AT A TIME DATA GND RS 232 PORT 12V OUT Figure 8 Field Interface Board Schematic 230 010073 290 000126 Rev A Nov 03 25 Installation Watchman 3100 User
3. The Watchman 3100 has two laser sources contained in the unit Invisible infrared IR Used for range measurement Visible beam Used for alignment The infrared IR laser emits energy that is not visible to the human eye It is designed as a Class 1M laser source as specified by IEC 60825 1 1993 A1 1997 A2 2001 In normal operation the IR laser is not considered hazardous In normal installation and use a person may view the laser light with the naked eye or with eyeglasses assisting vision The visible laser pointer is classified as a Class 2 laser product per IEC 60825 1 1993 A1 1997 A2 2001 Class 2 denotes low power visible lasers or laser systems that because of normal human aversion responses do not usually present a hazard In normal installation and use a person may view the laser light with the naked eye or with eyeglasses assisting vision The laser pointer emits continuous visible laser light at a wavelength of 635 nm The laser pointer light has an optical power of less than 1 mW and a spot diameter of less than 15 mm at a range of 5 m The laser pointer is co aligned with the rangefinder beam and projects a red spot on any surface Note that this beam spot may be hard to see in bright light When the two laser beams are considered together the Watchman 3100 is considered a Class 2M product per 60825 1 1993 A1 1997 2 2001 The Watchman 3100 is therefore labeled as a Class 2M product the two labels on the unit
4. Analog Settings Zero span inverse span 20 mA 0 to 50 000 cm 4 mA 0 to 50 000 cm 20 mA 3000 cm 4 mA 0 Filter Filter Distance Range window for valid readings 0 325 m Filter Time Out Number of readings for which window distance is valid 0 127 0 0 First Last Pulse Mode First Pulse Use with a clear and unobstructed view of the target material Last Pulse Use with interference such as fog rain dust snow or objects between the unit and the target material Filtered Last Use with heavy interference when lower accuracy is acceptable Last Pulse Zero Offset Forward Shift zero reference point for range readings closer to target material Backward Shift zero reference point behind the rangefinder 0 0 Power Up Display Main Menu Unit display main menu on power up Process Variable Unit display range readings on power up Main Menu Laser Pointer On Pointer on alignment only Off Pointer off Off Update Rate From 1 range reading every 5 seconds to 20 per second 1 reading second 290 0001 26 Rev A Nov 03 41 Programming Watchman 3100 User Manual 11 1 1 11 1 2 11 2 Hand Held Keypad To facilitate test and setup in an operational environment Optech offers an optional hand held keypad The keypad uses RS 232C communication and plugs into J2 on the interface board It can be connected or disconnected at any time whil
5. The Watchman 3100 s thermal protection is summarized in Figure 11 below 70 63 Rangefinder shuts off 60 Rangefinder DC 50 ona Laser Pointer shuts off at 40 C Temperature 40 C 30 AC Heater shuts off at 20 25 C 20 DC Heater 10 5 445 Em n AC Heater restarts if temp falls to 5 C DC Heater in Rangefinder warms up unit in 3 45 minutes AC Heater Enclosure warms up unit in 3 30 minutes 40 Figure 11 Thermal Protection 10 5 1 High Temperature Rangefinder Protection To protect the Watchman 3100 from temperature extremes outside its specified operating range the unit s power supply is automatically shut off without warning if the temperature of the rangefinder inside the enclosure Rises above 67 3 C The power supply is re enabled automatically and without warning when the temperature returns to an operable level The unit then resumes operation with the same programmed settings as before shutdown and begins reporting range readings again The laser pointer defaults to OFF 36 290 000126 Rev A Nov 03 Watchman 3100 User Manual Operation 10 5 2 10 5 3 10 5 4 High Temperature Laser Pointer Protection To protect the laser pointer from temperature extremes above its specified operating range the laser pointer is shut down automatically when the ambient temperature exceeds about 40 C The pointer is automatically re enabled when the temperature dro
6. 37 TT PROGRAMMIING s 1 33 Rr ta Sp do Roe eg Roa e CO ROS edo dT Ao Peto Bt qun B een hes 39 11 1 Summary of Screens and Programmable Settings 39 1141 1 Hand Held Keypad zen le al dine ELI a icu edu PAV Rad PRG 42 11 1 2 Using the Programming Screens x ree ce EROR EORR ERR URSUS MORE REUS 42 11 2 Programming the Laser Pointer ger od Bal poe eee od es 42 11 3 Menu Sereenti AE AN undated d t de eR E BEDS 43 11 4 Format Screens zz n AN RUP e EI MR eu taco es Ap O ie ste ted er ex abd e 43 11 4 1 Measurement Units for Range Readings 43 11 4 2 Power Menu 3 IT UP ER PTS UAE p MP eS 44 11 43 Range Resolution eeu RA P RS CE iE ees 44 TR Data pe y asd eri MI C eV ECHO 45 11 5 ANALOG Screens 4 20 mA Analog Range Settings 45 11 6 Modes SCrEeNS u y hacks e eerie eodd ee eso cn REC Ee A Sat Au ded AR ua b 47 11 6 1 First Last Pulse Range Filter 47 11 6 2 Filter Distance and Time Out rr rss reses 48 U E NTI BEEN rec poet piter p het bep Rui totas ge nte yt esee esters animad tue Bed ete DLR 50 2 SET Up Sereens uere e
7. Do not open enclosure when unit powered Only qualified personnel should handle power supply and associated wires and connectors The optional AC DC power supply converts an external 120 VAC power source into the 24 VDC used internally by the Watchman 3100 The power supply is located inside the main enclosure and is not accessible during normal operation The fuse for this device is located at F3 on the interface board covered by a reusable fuse cover 120 VAC is present on the interface board at terminals 12 and 13 of the terminal block and pins 34 and 36 of the 40 pin edge connector terminal 14 is chassis ground Live voltages may also be present at the power supply When the Watchman 3100 is powered do not touch the above con nections 8 290 000126 Rev A Nov 03 Watchman 3100 User Manual Specifications 4 SPECIFICATIONS All specifications are subject to change without notice For additional information and other options see appendix page 67 Measurement Range Absolute accuracy Operating accuracy 3 Repeatability Resolution Rate Maximum reportable range Units of measurement Zero reference point 0 2 m to 250m 0 2 m to 1 500 m with reflectors Within 2 cm Within 5 mm Within 3 mm 1 mm Programmable from 1 reading every 5 seconds to 20 readings per second 1 500 m Meters or feet Front surface of enclosure window frame Outputs Analog 9 4 20 mA load 1 000 ohms 1
8. Turco 5042 gt 290 000126 Rev A Nov 03 53 Maintenance Watchman 3100 User Manual Alcohols Methanol Isopropyl alcohol Note Remove all residual organic solvents with a secondary rinse 12 1 2 Graffiti Removal Butyl Cellosolve for removal of paints marking pen lipstick etc Masking tape adhesive tape and lint removal tools work well for lifting off old weathered paints Kerosene or VM amp P Naphtha for removal of labels stickers etc If these solvents will not penetrate sticker material apply heat hair dryer to soften the adhesive 12 2 Enclosure O Rings and Seals The interface module is water proof and dust proof as long as all seals are installed and in good condition When servicing the unit check the module O rings listed below Module 1 Lid module seal 2 Each cable conduit Enclosure 1 Lid enclosure seal 1 Around D37 connector on enclosure lid 2 Rangefinder transmit and receive windows 1 Laser pointer window 4 Mounting screws attaching module to enclosure 6 Two mounting holes on each mounting boss For O ring kits contact Optech 54 290 000126 Rev A Nov 03 Watchman 3100 User Manual Maintenance 12 3 12 4 12 5 Fuses There are three replaceable glass fuses F1 F2 F3 on the interface board as listed in the table below Fuses are installed at the factory for the options ordered Fuses are protected by reusable fuse covers The fuses F2 and F3 are la
9. 000 VDC isolation Serial RS 422 Transmit only 1 000 VDC isolation Serial RS 232C Bi directional for test and setup only not isolated 1 Maximum ranges are typical and depend upon target reflectance vessel conditions e g dust back ground radiation and sightglass ratings 2 Ata measurement rate of 1 reading per second the specified accuracy is absolute over the full tempera ture range with a variety of materials and at any distance within 1 standard deviation 3 Ata measurement rate of 1 reading per second this accuracy depends upon limited variations in tem perature material and distance associated with the installation 4 Ata measurement rate of 1 reading per second under steady state conditions within 1 standard devia tion 5 Analog accuracy is equal to absolute or operating accuracy 0 1 of range 290 0001 26 Rev A Nov 03 Specifications Watchman 3100 User Manual Lasers Wavelengths 905 nm infrared rangefinder beam Infrared beam divergence 5 mrad 0 28 635 nm visible laser pointer beam Infrared spot size 4 cm 0 005 x distance in cm Eyesafety U S FDA 21 CFR 1040 IEC 60825 IR rangefinder laser Class 1 Class 1M Visible laser pointer Class 2 Class 2 Power 1 000 VDC Isolation Input voltage 24 VDC nominal 10 5 30 VDC or 120 VAC option Power consumption 36 W max 24 VDC Environmental Operating temperature 10 C to 50 C With AC heater 40 C to 45 C Storage temperature 40 C to 7
10. 6 WASHER FLAT 3 4 223 6 Figure 18 Articulating Bracket Front View 72 290 000126 Rev A Nov 03 Watchman 3100 User Manual Appendix Product Information CAP 1 4NPT 316SS NIPPLE CLOSE 1 4NPT SS M8X1 25X16MML WASHER FLAT M8 WASHER LOCK 8 44 1 4 NPT PORT FOR OPTIONAL AIR CURTAIN EITHER SIDE 3 4 BOLT Figure 19 Articulating Bracket Side View 14 2 9 1 Articulating Bracket Installation Required Components Articulating bracket 3 4 10 x 1 1 2 hex bolt 3 4 10 nut 3 1 4 flat washer M8 x 18 mm hex bolts M8 flat washers 1 4 NPT SS close nipples 1 4 NPT SS caps N N N N N Note Caps and nipples usually shipped as one assembly with nipples screwed on to caps Procedure 1 Mount the articulating bracket to a stable surface using the 3 4 10 bolt washers and nut 2 Mount the unit to the articulating bracket using the two 1 4 NPT close caps nipples and the two M8 bolts and washers Tighten the caps nipples but leave the M8 bolts loose 290 000126 Rev A Nov 03 73 Appendix Product Information Watchman 3100 User Manual 3 Using the caps nipples as a pivot point adjust the vertical position of the unit with a large screwdriver 4 Adjust the horizontal position of the unit using the 3 4 10 bolt 5 When the unit is correctly mounted tighten all bolts 14 2 10 LEXAN Window Standard on all enc
11. 73 T4322 TOS LEXAN Wind OW eie Joe ting el phe alee at le eh ate haw A d 74 14 2 11 Reflector Clusters ss so xe id qi ege 9r eut 74 14 3 Electrical Interface Detail Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 List of Figures Page Watchman 3100 Level M nitor sise uni kre o Ee eer ae eee an en Se act e 3 Main Features of the Watchman 3100 LLL La 4 IEG Eyesafety Labels u dana ea ak ead Vee et ee ed a NA ee Bard eo eee hace 8 Unit Top View 205 000106 u aya u BIE u a e h dbo Dac A ae RES 23 Unit Gross Secti n 205000106 rx 3 85 ZNE pr IM PA ae uM 24 Unit Bottom View 205 000106 2 2 25 ke DR RR U teg a 24 Unit Front View 205 000100 isis VIPERA xe Nuper Ie eire I E U S TANE 25 Field Interface Board Schematic 230 010073 LLLLL RR es 25 Using Retro Reflectors with Laser Beam reme 31 Footprint of Rangefinder Laser Beam 1 1 eee ems 34 Thermal op a he RUE ea 36 Watchinan Programming Sereers 14 4 bre benen ke ask e Re SERE RR MER Ree ee eS 40
12. Range Resolution page 44 or send an ASCII C Check that the D9 connector is securely attached Flashing Check that the polarity of the field wiring is correct 4 For 4 20 mA analog data check that the analog current at the terminal block is correct and that the 4 mA and 20 mA set points are programmed correctly ANALOG Screens 4 20 mA Analog Range Settings page 45 290 0001 26 Rev A Nov 03 59 Troubleshooting Watchman 3100 User Manual 13 4 Intermittent Operation In Optech s experience intermittent problems are usually related to the environment in which the unit operates For this reason the Watchman 3100 has been designed so that environmental prob lems can be distinguished from instrument problems with ease The unit can also be tested locally to eliminate any possible interference from the line or other equipment Local Test page 62 1 Check all external cabling connections and associated equipment 2 Check the serial output for error codes Table 8 page 57 3 Check that all heating and cooling equipment is functioning The unit s thermal cutoff switches are self resetting and the unit is disabled and re enabled without warning Thermal Protection page 36 4 If the unit is sending invalid output PARTIAL DROPOUT SAT DROPOUT check that No dust smoke steam rain or other environmental condition is interfering with a clear line of sight between the unit and the target materi
13. and Gaskets For flange mount applications only must be ordered together Available in 150 300 and 600 class and in 4 and 6 sizes Flange gasket Seals your flange to Optech sightglass Bezel gasket Seals Optech unit to Optech sightglass 290 000126 Rev A Nov 03 69 Appendix Product Information Watchman 3100 User Manual 14 2 8 Sightglasses Metaglass sightglass for pressure applications LEXAN sightglass with 150 class for unpressurized applications 21 lt gt RETAINER z f 221 77 2 APPROVED Um lt SIGHTGLASS FUSED TO METAL Z N P VU M 2 2 CONFORMING TO DIN 7079 2 GLASS BOROSILICATE DIN 7080 Figure 16 Sightglass and Retainer Flange Accessory 70 290 000126 Rev A Nov 03 Watchman 3100 User Manual Appendix Product Information 14 2 8 1 Sightglass Installation MOUNTING BLOCK MOUNTING BRACKET M8 NUT W FLAT AND LOCK WSHRS M8 BOLT BOLT NOTE IN 4 SIZE HEAD OF BOLT MUST ALIGN WITH 3100 BOX FOR CLEARANCE BEZEL GASKET RETAINER FLANGE RAISED GROOVED FACE DOWN FLANGE GASKET SIGHT GLASS OR LEXAN FLANGE GASKET SPRAY RING OPTIONAL FLANGE GASKET STANDPIPE FLANGE BOLT AND NUT PROVIDED BY USER Figure 17 Sightglass and Gasket Installation Front View 1 Ensure the sightglass and bezel glass are clean and free from dirt or oil If they are dirty clean them with a commercial gl
14. is not intended to be permanently connected to a control system NOTICE Save and re install all O rings before completing commissioning of unit For location of O rings see page 54 6 1 Cable Conduits The interface module has two 1 2 NPT cable conduits both O ring sealed Optech can also provide a PG13 conduit entry set as an option page 67 290 000126 Rev A Nov 03 15 Cabling Watchman 3100 User Manual 6 2 Signal and Data Isolation The power RS 422 and analog current loop lines in the rangefinder and on the terminal block are isolated to 1 000 VDC The RS 232C port is intended for testing and local communication only and is not isolated Before making connections to this port determine whether a ground fault exists 6 3 J3 Terminal Block The terminal block is the primary interface between plant power and communications and the Watchman 3100 Optech provides a mating plug that can be attached to outside cabling Table 1 Terminal Block Assignments Terminal Connection 1 24 VDC 2 24 VDC 3 Spare 4 Analog Current Loop 4 20 mA 5 Analog Current Loop 4 20 mA 6 RS 422 Transmit 7 RS 422 Transmit 8 Data Common 9 LASER ENABLE 10 EXTERNAL TRIGGER 11 Spare 12 120 VAC Line Option 13 120 VAC Neutral Option 14 AC Ground Chassis Ground 16 290 000126 Rev A Nov 03 Watchman 3100 User Manual Cabling 6 3 1 External Trigger There are two ext
15. last valid measurement until another valid measurement occurs or the programmable filter time out expires The maximum filter distance is 32 500 cm 12 795 inches Filter Time Out The filter time out measured in number of range readings determines the number of readings for which the filter distance applies After the time out expires the next measurement is valid whether it is within this distance or not The maximum time out is 127 The FILTER DISTANCE screen displays the current value in the current units of measurement centimeters or inches the FILTER TIME OUT screen displays the current number of range read ings selected for the filter distance When you press A in either screen the following prompt appears INPUT A NUMBER FOR THE SETTING Enter the new value which will be shown at bottom left of the display Press ENTER to save it and then E to return to the screen Check that the correct value is now displayed Examples First range reading 3 500 cm Filter distance 200 cm Filter time out 5 range readings Valid reading must be 3 300 or greater If there are no valid measurements the signal remains at 3 500 cm After five readings the next range reading is valid whatever it is The Watchman 3100 provides a sliding filter that is a valid reading resets the filter for the follow ing readings First range reading 3 500 cm Filter distance 200 cm Filter time out 5 range readings Valid reading must be 3 300 or greater S
16. unit from dust and dirt during this step 3 Remove the top two hex head screws from the front window assembly Do not remove the assembly itself which is still attached by the bottom two screws 4 Loosen the four captive screws on the enclosure lid To avoid stripping the screws do not loosen them any more than necessary 5 Carefully lift the lid with interface module off the enclosure 6 Place the lid upside down above the enclosure so that the internal ribbon cable is exposed 7 On the rangefinder base plate inside the enclosure remove the four screws one in each corner that attach the base plate to the enclosure 290 000126 Rev A Nov 03 63 Troubleshooting Watchman 3100 User Manual One screw secures the transmitter baffle a curved black anodized aluminum component between the rangefinder lenses and the enclosure window to the base plate Remove this baffle carefully and note its mounting orientation If your unit has a heater ensure that the heater thermostat in one corner of the plate is not damaged while removing the screws 8 If your unit has an AC power supply two of the base plate screws attach the power supply to the enclosure Carefully remove the power supply from the enclosure 9 Carefully lift the base plate out of the enclosure and turn it over 10 Remove the four 4 40 x 3 8 screws that attach the rangefinder to the base plate 11 If necessary disconnect the ribbon cable from the rangefind
17. 0 C 3100 Enclosure CE Marking 2 Class A Ratings CSA 4X 6 IP 67 Class Div 2 Group ABCD Class Il Group EFG Size 2721 x 202 W x 148 H mm including mounting bosses Weight 7 kg with rangefinder 1 For 24 VDC operation 2 24 VDC operation only 10 290 000126 Rev A Nov 03 Watchman 3100 User Manual Specifications Options AC DC Enclosure Power Supply Input voltage 120 VAC 20 VA 50 60 Hz Operating temperature 10 to 50 AC Enclosure Heater Input voltage 120 V 100 W max Operating temperature 40 C to 45 C Hand Held Keypad Display 4 lines x 20 characters liquid crystal display Case Molded high impact ABS Operating temperature 0 C to 50 C Storage temperature 20 C to 70 C Air Curtain Use dry oil free instrument air 1 For AC operation down to 40 C 290 000126 Rev A Nov 03 11 Specifications Watchman 3100 User Manual 12 290 000126 Rev A Nov 03 Watchman 3100 User Manual Unpacking 5 UNPACKING Upon receiving your unit inspect the shipping carton for external damage that may have occurred during transit Check the contents against the packing list and inspect the unit for visible damage such as scratches and dents If an item is missing or damaged notify the carrier and your Optech representative immediately Check the enclosure window and ensure that it is clean and not cracked or scratched For window cleaning instructions see page 53 290 000126 Rev A
18. 6 Rev A Nov 03 Watchman 3100 User Manual Alignment Procedures 7 10 11 12 Program the laser pointer ON if desired The pointer defaults to OFF upon power up Aim the unit adjusting its position until the range reading saturates and the SATURATION symbol is displayed to the left of the serial range reading This indicates that the unit is properly aligned and the rangefinder beam is striking the retro reflectors squarely Move the target to the furthest operating range and verify that the beam still strikes the target Move the target closer to the unit by selected intervals repeating Step 9 at each point If you are using retro reflectors at ranges of less than 30 m first reduce the strength of the return signal to protect the unit by one of the following methods Cover the laser beam spot OR Move the target off axis so that the beam spot strikes only the edges of the retro reflectors Figure 9 Remove the retro reflectors if desired Laser Beam Spot Size on Object At5m 8 cm dia Retro Reflector At 20 m 15 cm dia At 40 m 25 cm dia Figure 9 Using Retro Reflectors with Laser Beam 290 000126 Rev A Nov 03 31 Alignment Procedures Watchman 3100 User Manual 32 290 000126 Rev A Nov 03 Watchman 3100 User Manual Operation 10 10 1 OPERATION The Watchman 3100 can be programmed and controlled remotely from Optech s hand held keypad or from any device comm
19. Manual 26 290 000126 Rev A Nov 03 Watchman 3100 User Manual Alignment Procedures 9 LIGNMENT PROCEDURES This section describes three methods of aligning the Watchman 3100 Laser pointer method Distance method Retro reflector method IF Laser pointer spot is visible on the target gt ND No one is within the field of view of the laser pointer or able to look directly into the laser pointer beam IF Exact range to the target is known AND Laser pointer method cannot be used IF Range to the target is gt 250 m gt ND Environment is dusty or there is bright sunlight As a rule use the laser pointer method wherever possible After alignment the Watchman 3100 is ready to be operated and programmed as discussed in Chapters 10 and 1111 290 000126 Rev A Nov 03 27 Alignment Procedures Watchman 3100 User Manual 9 1 Laser Pointer Method DANGER Visible Laser Light Do Not Stare Into Beam Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous exposure to laser light See also Visible and Infrared Laser page 7 Do not use binoculars or devices that collect light NOTICE Rangefinder Damage Do not point unit at sun The laser pointer produces a visible laser beam that is aligned at the factory to be collinear with the rangefinder beam It projects a red spot that marks the location of the rangefinder beam The las
20. NEL ITEM 3100 3200 3310 3315 3400 o WATCHMAN DEMO 3200 3310 3315 3100 Keypad v v v v v 120 VAC Power Supply v 120 VAC Heater v PG 13 5 Conduit Air Curtain SS lt lt Spray Ring Sightglass Pressurized Sightglass Unpressurized Flange Gasket Sealing Gaskets Bezel Gasket Universal Bracket Articulating Bracket SER SEN SEN SER Reflector Cluster LEXAN Window SES K K SE SN BE E NYE SEE SEE lt lt lt lt lt EM MES v v v v 4 B E lt lt lt lt S SEN SEN SER SEN SEN IM lt lt lt lt Figure 14 Options for Optech Level Monitors and Object Positioners Hand Held Programmer See manufacturer s documentation for more information 120 VAC Power Supply See manufacturer s documentation for more information 120 VAC Heater See manufacturer s documentation for more information 68 290 000126 Rev A Nov 03 Watchman 3100 User Manual Appendix Product Information 14 2 4 PG 13 5 Conduit Entry Set Replaces NPT conduit entries on field interface module Designed for non armored control cables 14 2 5 Air Curtain Use dry oil free instrument air or nitrogen 14 2 6 Spray Ring For flange mount applications only See Figure 13 2 SERRATED FACE 8 625 RE dentes E 0 875 2 77 0 4375 Figure 15 Spray Ring Flange Accessory 14 2 7 Sightglass
21. Nov 03 13 Unpacking Watchman 3100 User Manual 14 290 000126 Rev A Nov 03 Watchman 3100 User Manual Cabling 6 CABLING IMPORTANT Power and data cables supplied by customer are required for operation Watchman 3100 may fire as soon as power is supplied For cabling diagram see Figure 8 page 25 To simplify cabling and servicing all external data and power connections are made to an inter face module on the enclosure In the module are a 14 pin terminal block J3 and a 9 pin con nector for RS 232C communication J2 The external data and power lines are carried by ribbon cable from an edge connector to a D37 connector on the base of the interface module This con nector and its mate on the enclosure are the interface between the module and the enclosure Ribbon cables run from this point to the rangefinder panel inside the enclosure All components are designed for quick and easy removal The interface board and the module lid are each attached to the interface module by four captive screws The module itself is mounted to the enclosure by four screws accessed from inside the module A wiring guide is provided inside the interface module see also J3 Terminal Block page 16 and J2 RS 232C Serial Connector Local Programming page 17 All other data and power connec tions are internal Note that the RS 232C port is designed for commissioning test installation and alignment only It is not isolated and
22. Optech Watchman 3100 User Manual LR and SR Models Optech Incorporated Industrial Products Division 100 Wildcat Road Toronto Ontario Canada 3 279 Telephone 416 661 5904 Facsimile 416 661 4168 Website www optech on ca Document No 290 000126 Rev A November 2003 Warranty This product is warranted to be free from defects in materials parts and workmanship for a period of one year from the date of delivery It will conform to the current product specifications upon delivery Misuse improper handling unau thorized repairs or modifications or use of the system outside of specifications will void this warranty Failure to maintain the enclosure rating for this product will void this warranty Shipping Damage This unit is inspected before shipment As soon as you receive the unit from the carrier and before operation inspect the unit for damage that may have occurred during shipment If any damage is found file a claim with the carrier and notify your Optech representative immediately Return of Unit Before returning this unit contact your Optech representative to obtain a Return Authorization Number Optech will not accept units without an RA number Copyright Copyright 2003 by Optech Incorporated All rights reserved This item and the information contained herein are the property of Optech Incorporated No part of this document may be reproduced transmitted transcribed stored in a retrieval system or tr
23. PUR RENE RU SENI ails Soke ache e tried ume Ea PEERS 50 TR ESAE v ar et OC I veo e ex pha sei x Eds 50 TAZ 2 OISEAU 51 14 78 Bointer z Teeny E ED e ptr iu iu ed de 52 12 5 MAINTENANCE SA 8 a i S u E een m ete RR RD AREE OE eR AA o ERR RT 53 12 1 Enclosure Window Cleaning and 53 12 1 1 Compatible Cleaning mue 53 12 1 2 Graffiti Removal uu a enn Bien ue e RN PERPE OR e eure ere dera 54 12 2 Enclos re O Rings and Seals EVE Ni bed ee eA e EE EUM 54 12 3 SEUSeS doo terio a SR eese eerte ak aa a ii o eT 55 TR Uu prr 55 12 5 Returning the Watchman 3100 to the mm 55 13 TROUBLESHOOTING axe bet never tam hes uu tege te ue ide whee bm eh eked 57 13 1 EtrotCodes calci e Ee HE alle ERE US ER RR wl V Swe aba dake wan asal e NA Qha 57 13 2 Diagnostic LEDS CR PCIE eui EPI pe HE REM EAS 58 13 3 ING son ec erc ne pec e h ua ee Rd c Ee eet 59 13 45 Intermittent Operation er Oen S ER P n Md e a eet tie eR dus 60 13 5 Erratic Eluct ating Short Readirigs us p rera RR CAT RES 61 13 67 Eocal Testz rg ro RR
24. RATE ALARM 4 20 C IGNORE C MODES D SET UP MODES MODES AOUTPUT CFILTER MODE B PULSE D TRIGGER OUTPUT MODE ADIRECT B EXTRA AVERAGING PULSE AFIRST PULSE BLAST PULSE C FILTERED LAST PULSE FILTER AFILTER DISTANCE B FILTER TIMEOUT FILT DIST at XXX SELECTABLE FILT DIST FILT TIMEOUT at XXX SELECTABLE FILT TIMEOUT TRIGGER A CONTINUOUS B EXTERNAL Figure 12 Watchman Programming Screens SET UP SET UP MENU ARATE C POINTER B OFFSET UPDATE AT 1 r s UPDATE RATE A 1 20 readings sec B 1 5 10 30 60 sec r SELECT UPDATE RATE OFFSET mm DIRECTION TO SHIFT ZERO POINT A FORWARD B BACKWARD POINTER AON BOFF 40 290 0001 26 Rev A Nov 03 Watchman 3100 User Manual Programming Table 4 Programmable Settings Setting Options Factory Default Measurement Units Meters feet Meters Resolution Low 0 00 m 1 cm or 0 1 ft High High 0 000 m 1 mm or 0 01 ft Trigger Continuous Unit internally triggered to output range readings Continuous at selected update rate External Unit outputs a range reading only when externally triggered Data Output Range Only Outputs range readings only Range Only Range Dropout Intensity Outputs range readings as well as the number of laser shots that do not return to unit and the relative intensity of return signals from 0 to 6375 Velocity Outputs range readings and target velocity
25. Range readings may then fluctuate for first 15 minutes Accuracy gradually improves as unit warms up Remote Programming via PC Use upper case letters only press CAPS LOCK Enclosure O Rings page 54 To maintain water proof seal save and re install all O rings after servicing Contents Page T Z OVERVIEW Bett ah oio a EN cu Se MI qu S e ERU e 1 TA Ferms Used in ThisManual i 22225 asun clk dex pu A a 1 1 24 TYPE CONVENTIONS i i VN tea decane brine ee kasa io grep dei jo PIE R R 1 2 SYSTEM DESCRIPTION e ree e ry RES Acacia ee metne ore Gatien alee PER dat u dete Nie eR ee te Ge RES N 3 2 T Principle of Operations Rado Sie ea Rede e 4 COR CR Rd tenes 4 232 Lasets ua R RERO eS Ber are diete qur eU eder AUS F apu 2 a a 5 2 3 Programi MIN AE Reb RE dor RE NE angle das E EMEN RARE CONNOTEA 5 24 258 Rc PM 5 3 SAFETY roo Eure x Op or E he Da USA qt EN M RUIN NS DEAE 7 371 Visibleand Infrared Lasers nass UI REDE MESURE 7 3 2 AC DC Enclosure Power Supply 120 VAC Option 8 5 IG URGERE ie eee Sa LEER 9 5 UNPACKING LEVE ead ook PI Esse M Ls Ed 13 6r CABLINGE amer c E Ue dE ANNE Pun
26. Rangefinder Connector Panel Inside Enclosure 63 Options for Optech Level Monitors and Object Positioners 68 Spray Ring Flange Accessory Fase pA ERRARE eee HEAR MEA eR 69 Sightglass and Retainer Flange Accessory L L e ms 70 Sightglass and Gasket Installation Front View 71 Articulating Bracket Front View hh e mts 72 Articulating Bracket Side View hh me 73 Electrical Interface Details tin ms m E eG teste Re ee RACE 74 Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 List of Tables Page Terminal Block Assignments i csi ses kiss b Re AE d RR Poke eae ee RRS 16 42 RS 232C Connector Pinout 17 Accuracy and Repeatability at Selected Measurement Update Rates 35 Programmable 566 aie eves ede UR eth ERE eae cule t I S C RUE eat 41 Common Programming I I I IA t 42 Replaceable uses iic erre E PES SU Ee ERE ape naqa URSI ER CENT RENE 55 Troubleshooting Surnmi ty i m pe e eme Re ee th eg ave su E de e ges 57 Erot Codes xi leader e rique eR E era DOE I Ie donus deni eer Rare qu 57 Diagnostic LED
27. S 5 oua de Um eee Radeon ine LED RU se n t hc eet de 58 Table 10 Terminal Block Pin RI II e ea 75 Watchman 3100 User Manual Overview 1 OVERVIEW This manual provides installation programming operation and maintenance information for users of the Watchman 3100 object positioner Both the Watchman 3100LR and 3100SR models are discussed in this manual Unless otherwise stated information applies to both models 1 1 Terms Used in This Manual To highlight important information this manual uses the following signal words Do not proceed until you understand the information and have complied with any instructions DANGER WARNING CAUTION NOTICE IMPORTANT 1 2 Type Conventions Death or serious injury Potential for death or serious injury Potential for minor or moderate injury unsafe practices Damage to equipment or loss of data policy on safety of personnel or protection of property Operation or maintenance suggestion other useful infor mation This manual uses the following type conventions POINTER ON MAIN MENU Hardware labels For text displayed on or entered via keypad or PC 290 000126 Rev A Nov 03 Overview Watchman 3100 User Manual 2 290 000126 Rev A Nov 03 Watchman 3100 User Manual System Description 2 SYSTEM DESCRIPTION Figure 1 Watchman 3100 Level Monitor The Watchman 3100 is a laser base
28. See also Visible and Infrared Laser page 7 Do not use binoculars or devices that collect light NOTICE Rangefinder can be damaged by excessively strong signal returns At ranges of less than 30 m use retro reflectors ONLY IF environment is consistently very dusty This method is ideal for verifying that the rangefinder is hitting the target in dusty environments at ranges of more than 100 m or in clear environments at ranges of more than 1 km It requires retro reflectors such as 3M reflective tape or bicycle reflectors fixed on a mobile target One person is required to monitor the range readings while another moves the target This method relies on receiving a strong reflection that saturates the rangefinder receiver producing a SATURATION error code over the serial output It is not intended to monitor the exact range to the target since saturated range readings may not meet typical accuracy specifica tions 1 Attach retro reflectors to the target 2 Position the target at least 50 m from the unit 3 Position the Watchman 3100 directly in line with the target 4 To monitor the serial range output cable the unit to the Optech keypad or a similar device 5 Check that No one is within the field of view of the laser pointer or able to look directly into the laser pointer beam No one is holding a target for the beam The unit is not installed at eye level 6 Power the unit ON 30 290 0001 2
29. al All windows and the sightglass if provided are clean The air curtain or spray ring is functioning properly if provided The unit is programmed appropriately for its operating environment window distance window time out analog limits first last pulse mode 5 If the analog output remains the same even when the range changes check that the analog zero and maximum settings correspond to valid range readings default 0 30 m If the range differential is small when compared to the analog span readings may appear not to change For example if ranges vary from 40 50 m and analog settings are for 0 200 m the analog output may appear fixed 60 290 000126 Rev A Nov 03 Watchman 3100 User Manual Troubleshooting 13 5 Erratic Fluctuating Short Readings Erratic or drifting range readings may be caused by interference between the rangefinder and the target material either from dust inside the rangefinder or from atmospheric interference such as dust or rain Such readings may also be the temporary result of a cold unit that is warm enough to fire but is still warming up internally If your unit is producing erratic readings or ranges that are much shorter than expected there may be a build up of dust on the transmitter lens inside the rangefinder Especially in first pulse mode this may cause the unit to report a very short range reading e g 0 05 m to the enclosure window rather than to the target material bein
30. anslated into any language or computer language in any form or by any means otherwise without the express written permission of Optech Incorporated 100 Wildcat Road Toronto Ontario Canada M3 279 Revision History Revision Date Description A Nov 03 Release Product Description Sheet Product Name Enclosure Type Enclosure Serial No Rangefinder Serial No Software Versions Options Supplied with This Product Hand Held Keypad Sightglass Unpressurized 120 V AC DC Power Supply Flange Gasket 120 VAC Heater and Power Supply Sealing Gaskets PG13 5 Conduit Entry Set Bezel Gasket Air Curtain Universal Bracket Spray Ring Aritculating Bracket Sightglass Pressurized Reflector Cluster Special and Custom Features Important Notices Laser Pointer page 7 CAUTION Visible Laser Light Do Not Stare Into Beam Program laser pointer to OFF after installation and alignment Do not stare into laser pointer beam Low and High Temperature Protection page 36 Rangefinder turn on is delayed without warning at low temperatures until heater warms unit up to operating temperature rangefinder and laser pointer are shut down without warning at high temperatures until unit cools down No data is transmitted or accepted when rangefinder is shut down At cold temperatures unit may take up to 45 minutes to turn on
31. are shown in Figure 3 This labeling and classifica tion system ensures that the Watchman 3100 complies with all requirements of the European eye safety standard IEC 608251 1993 A1 1997 A2 2001 and with the United States eyesafety standard 21 CFR 1040 parts 10 and 11 and Laser Notice 50 dated July 2001 As with many conventional light sources there is some potential for hazard if the laser light is viewed directly for long periods Do not use optical instruments such as binoculars or other devices that collect light while the laser pointer is firing As a standard laser precaution do not stare directly into the laser and do not install the Watchman 3100 at eye level Use the laser pointer for alignment only and not in normal operation To prevent accidental exposure to the laser beam Optech strongly recommends programming the pointer OFF through 290 0001 26 Rev A Nov 03 7 Safety Watchman 3100 User Manual software as soon as the Watchman 3100 is installed and aligned As a precaution the pointer always defaults to OFF upon power up VISIBLE AND INVISIBLE LASER RADIATION DO NOT STARE INTO THE BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS CLASS 2M LASER PRODUCT 0 2 mW max output 200 Hz 10 ns pulse at 905 nm 0 99 mW max output at 635 nm Figure 3 IEC Eyesafety Labels 3 2 AC DC Enclosure Power Supply 120 VAC Option WARNING 120 VAC Shock Hazard Optional power supply can cause death or severe injury
32. ass cleaner 2 Remove the white backing from the foam bezel gasket and attach the gasket over the unit window frame with the thick part over each other so that the screws are visible 3 Place components on the standpipe as shown in the above illustration with the raised grooved face down towards the tank and the spray holes if spray ring supplied facing up toward the sightglass 4 Bolt the retainer flange to the standpipe using only 6 bolts Then insert the mounting brackets opposite each other and hand tighten them with the two remaining bolts 5 Place the unit in the center of the brackets Then insert the M8 bolts nuts and flat lock washers as shown in the above illustration Insert the M8 bolts all the way into the block leaving the nuts loose 290 0001 26 Rev A Nov 03 71 Appendix Product Information Watchman 3100 User Manual 6 Center the unit and slide the two brackets until both rest on the retainer flange Then tighten the brackets 7 Push down the centered unit on the top and then tighten the rest of the M8 nuts Notes Figure 17 above covers 4 and 6 non pressurized class 150 300 and 600 flanges Inthe 6 300 and 600 application rotate the brackets 180 around the flange bolt and bolt them directly to the mounting block Nuts are not necessary 14 2 9 Articulating Bracket For 3100 3310 3315 enclosures when they are not flange mounted 1 2 NPT CONDUIT 218
33. d non contact measurement system designed for industrial use as an object positioner It is a member of Optech s Series 3000 family of industrial instru ments SR Model Optimized for short range applications typically less than 25 m LR Model Optimized for long range applications typically greater than 25 m 290 000126 Rev A Nov 03 3 System Description Watchman 3100 User Manual 2 1 SIDE VIEW FRONT VIEW Interface Module Window Assembly Cable Conduits Enclosure Rangefinder Mounting Lenses Laser Pointer Figure 2 Main Features of the Watchman 3100 Figure 2 outlines the main features of the Watchman 3100 enclosure with the rangefinder installed The unit consists of a rangefinder housed in a sealed enclosure with a window installed over the rangefinder lenses and a small interface module mounted on the enclosure All external power and data connections are made to a printed circuit board inside this module In addition to a terminal block and a local RS 232C port the board contains diagnostic light emit ting diodes LEDs and fuses Housed in a rugged die cast aluminum enclosure the Watchman 3100 is configured for versa tile surface mounting in any orientation Mounting bosses and internal mounting holes on the base of the enclosure are provided for flexible installation The enclosure and the interface module are fully sealed to ens
34. dings per second For more information see Accuracy and Repeatability page 34 Offset OFFSET XXX mm Press E to exit DIRECTION TO SHIFT ZERO POINT FORWARD A FORWARD B BACKWARD Press E to exit Allows the user to set the zero reference for the range readings 290 0001 26 Rev A Nov 03 51 Programming Watchman 3100 User Manual A FORWARD Set the zero reference point in front of the rangefinder BACKWARD Set the zero reference point behind the rangefinder 11 7 3 Pointer POINTER A ON B OFF Press E to exit Turn the visible laser pointer on or off 52 290 000126 Rev A Nov 03 Watchman 3100 User Manual Maintenance 12 MAINTENANCE 12 1 Enclosure Window Cleaning and Maintenance NOTICE Window is delicate Do not use abrasive cleaners squeegees or other cleaning implements that may mar or gouge the window coating 1 Wash the window with a mild solution of soap and lukewarm water 2 Using a soft cloth or sponge gently wash the glass to loosen dirt and grime 3 Rinse well with clean water 4 To prevent spotting thoroughly dry with a chamois or cellulose sponge 12 1 1 Compatible Cleaning Agents Aqueous Solutions of Soaps or Detergents Windex Joy Fantastik Top Job Mr Clean Formula 409 gt Organic Solvents Butyl Cellosolve Kerosene Naphtha VM amp P grade Hexcel F O 554 Neleco Placer
35. e the unit is powered ON Using the Programming Screens When programming on PC first ensure that CAPS LOCK is on The programming screens are for matted for Optech s keypad and do not look the same when displayed on a PC The table below describes some of the most common screen operations Table 5 Common Programming Operations Operation Step Begin programming Press M Exit most screens Press E Backspace over an entry Hold down SHIFT and press BACKSP keypad Choose screen option Press letter then press E to save and exit Continuous update Press C Trigger mode Press S to get a reading Programming the Laser Pointer CAUTION Visible Laser Light Do Not Stare Into Beam Do not use binoculars or devices that collect light To program the laser pointer ON OFF press P at any time outside the programming screens The laser pointer is intended to help align the unit during installation and test only For any other application always program the laser pointer OFF The pointer defaults to OFF upon power up ON For alignment OFF At all other times For more information see Visible and Infrared Laser page 7 42 290 000126 Rev A Nov 03 Watchman 3100 User Manual Programming 11 3 Main Menu Screen When you press M to begin programming the following screen appears MAIN MENU A FORMAT MODES B ANALOG D SET UP Press E to exit To select a menu option Pre
36. econd range reading 3 400 cm Valid reading must be 3 200 or greater 290 000126 Rev A Nov 03 49 Programming Watchman 3100 User Manual 11 6 3 Trigger TRIGGER A CONTINUOUS B EXTERNAL Press E to exit A CONTINUOUS Updates automatically at set rate EXTERNAL Updates when TTL pulse received or S pushed on keypad 11 7 Set Up Screens SET UP MENU A RATE C POINTER B OFFSET Press E to exit 11 7 1 Rate UPDATE RATE AT 1 r s Press A to change Press E to exit 50 290 0001 26 Rev A Nov 03 Watchman 3100 User Manual Programming 11 7 2 UPDATE RATE A 1 20 readings sec B 1 5 10 20 60 sec r Press E to exit The measurement update rate is a function of the number of shots that are averaged and is there fore related to the unit s accuracy and repeatability Fastest least accurate rate 20 readings second Slowest most accurate rate 5 seconds per reading When you press A the following prompt appears INPUT A NUMBER FOR THE SETTING Enter the new value which will be shown at bottom left of the display Press ENTER to save it and then E to return to the screen Check that the correct value is now displayed Note that when the update rate is 19 readings per second the actual rate will be 1 shot per read ing This feature is implemented for diagnostic purposes when single shots per reading need to be observed Accuracy will be lower than for 20 rea
37. ength 635 nm aligned with the rangefinder beam The laser pointer produces a red spot that indicates the point to which the distance is being mea sured The pointer should be used only during installation to verify alignment Programming Embedded software enables you to customize many aspects of operation with an optional keypad providing a simple and convenient user interface The unit can also be programmed via PC or Palmtop computer A local non isolated RS 232C port can be used during installation to program and test the unit and to monitor range readings All programming software is built into the Watchman 3100 no separate software installation is required Outputs The Watchman 3100 outputs accurate range readings in RS 422 and analog data formats that are compatible with most industrial control and data logging systems A bi directional non isolated RS 232C port is provided for local programming 290 000126 Rev A Nov 03 System Description Watchman 3100 User Manual 6 290 000126 Rev A Nov 03 Watchman 3100 User Manual Safety 3 SAFETY 3 1 Visible and Infrared Laser CAUTION Visible Laser Light Do Not Stare Into Beam Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous exposure to laser light Use of optical instruments with pointer may increase eye hazard Program laser pointer to OFF after installation and alignment
38. er panel 12 If you are not going to replace the rangefinder in the enclosure immediately a Check that there is no dirt or dust on the lid and O rings b Re install the base plate enclosure lid and all O rings c Check that all cables are inside the enclosure d Re install the two top screws on the window assembly e Putthe enclosure in storage 13 7 2 Installing the Rangefinder in the Enclosure 1 Inastrong light check for dust on the inside of the rangefinder transmitter lens the right hand lens If dust is visible the rangefinder may produce incorrect readings In this case contact Optech for cleaning instructions 2 Turn the rangefinder base plate over 3 Attach the rangefinder to the base plate by installing the four 4 40 x 3 8 mounting screws Do not touch the rangefinder lenses 4 Attach the transmitter baffle to the mounting screw by the rangefinder lenses Ensure that the baffle curves around the right hand lens when looking into the lenses separating it from the other lens 5 Carefully lower the base plate into the enclosure 64 290 0001 26 Rev A Nov 03 Watchman 3100 User Manual Troubleshooting 6 Connect the ribbon cable securely from the enclosure lid to J2 and J1 on the rangefinder panel Z If your unit has an AC power supply a Carefully lower it into position on the base plate b Connect the ribbon cable to J2 on the power supply 8 Attach the base plate and power supply if prov
39. er pointer is most effective when ambient light is low and the red spot is clearly visible When ambient light is high as in bright sunlight the eye s ability to see the spot is reduced In this case use the distance or retro reflector method 1 Check that No one is within the field of view of the laser pointer or able to look directly into the laser pointer beam No one is holding a target for the beam The unit is not installed at eye level 2 Power the unit ON 3 Program the laser pointer ON The pointer defaults to OFF upon power up 4 Locate the laser pointer beam spot This spot can be difficult to see if the area is well lit 5 Adjust the position of the unit until the beam spot is centred on the desired location 6 Asan eyesafety precaution program the laser pointer OFF 28 290 000126 Rev A Nov 03 Watchman 3100 User Manual Alignment Procedures 9 2 Distance Method DANGER Visible Laser Light Do Not Stare Into Beam Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous exposure to laser light See also Visible and Infrared Laser page 7 IMPORTANT To use this method exact range s to target must be known The distance method verifies that the rangefinder is hitting a target and producing the expected analog range reading To use this method therefore you must know the exact distance s to which the rangefinder will be f
40. ernal trigger inputs on the terminal block J3 External Trigger Laser Enable Terminal 10 This is a TTL edge triggered input the unit executes one reading cycle on the negative high to low transition trailing edge of the trigger pulse Terminal 9 This is a TTL active low input the unit fires at the programmed repetition rate as long as the input is held low Since both inputs have internal pull up resistors the unit can be triggered by shorting terminal 9 or terminal 10 to the Data Common line terminal 8 6 4 J2 RS 232C Serial Connector Local Programming This non isolated connector is intended for local test installation and alignment with Optech s keypad or another serial communication device It is not intended to be permanently connected to a control system Table 2 J2 RS 232C Connector Pinout Pin Connection RS 232C Serial Data Out RS 232C Serial Data In Data Ground Remote 12 V 290 000126 Rev A Nov 03 17 Cabling Watchman 3100 User Manual 6 5 Serial Data Protocol NOTICE Before starting PC programming press CAPS LOCK Serial RS 232C communication is established via Optech s optional keypad Optech recom mends using this keypad All programming software is embedded and available as soon as serial communication is estab lished Programming screens are shown on the range display If you want to store readings or do not have a keypad y
41. g measured Dust on the inside of the rangefinder lens is clearly visible in good light 1 If the unit is in last pulse mode reprogram the unit to filtered last pulse mode First Last Pulse Range Filter page 47 This may eliminate interference from dust rain or similar parti cles 2 After a low temperature start wait for about 15 minutes for the unit s internal temperature to stabilize Range accuracy will gradually improve over this period 3 Power the unit OFF 4 Open the enclosure and remove the rangefinder Servicing the Enclosure page 63 5 Look into the transmitter lens the right hand lens to check for dust 6 If dust is visible contact Optech for cleaning instructions Do not open the rangefinder without direct authorization from Optech 290 000126 Rev A Nov 03 61 Troubleshooting Watchman 3100 User Manual 13 6 Local Test If you have followed the steps in the previous section and the problem persists test the unit to known portable target such as a cardboard sign Use a digital multimeter and Optech s keypad if provided to test the analog and RS 232C serial output Reposition the Watchman 3100 and range it to the portable target Note the programmed analog limits and then reprogram them temporarily to conform to the target range page 45 If desired use the laser pointer to confirm that the laser beam is hitting the target For laser pointer safety precautions see Visible and Inf
42. holes M8 For standard installation using an M8 x 1 25 socket head cap screw 1 4 NPT For auxiliary mounting for example with heavy vibration as a purging port or as a cooling port Mounting Holes For surface mounting or for extra rigidity four threaded M8 x 1 25 holes are provided on the base of the enclosure in a 110 x 240 mm pattern Orientation of the Interface Module The interface module is usually oriented so that the cable conduits are at the bottom of the module shielded from weather and dust To accommodate your installation the module can be rotated 180 so that cabling emerges from the top Note that in this case the D37 connector on the base of the module must also be rotated 180 to maintain its mating connection on the enclo sure 290 0001 26 Rev A Nov 03 19 Mounting Watchman 3100 User Manual 7 2 Mounting Configurations 7 2 1 Surface Mounting and Alignment Ensure that the support is sufficiently rigid to prevent misalignment Before drilling through holes into the support consider any future alignment problems or equipment that may obstruct the rangefinder beam The degree of alignment depends upon the size of the mounting holes To facilitate align ment Optech recommends oversized holes with suitable clearance To ensure the correct vertical alignment use shims or washers Forinformation on Optech s optional articulating bracket and surface mount installation see Appendix Product Informa
43. ib dete eed We ee ua pete ba SU Y e e I Rie Kea Beds 62 13 7 Servicing the Enclosure ej ie Beha a Ge eb RR IRURE ORIS 63 13 7 1 Removing the Rangefinder from the Enclosure 63 13 7 2 Installing the Rangefinder in the Enclosure 64 14 APPENDIX PRODUCT INFORMATION 4 ot a 67 14 1 Hand Held Programmer Communications Configuration 67 14 2 Options ats uu Sones ee Eee RES UU SEI Ve Ca es Soe PM eL IPS 68 T4 2 T Hand Held Programmer ies re Roe Rec C RS RES 68 14 2 2 120 Power Supply uy resin yas e b dae ERR E eV RA eR eR Y 68 1222 3 120 VACS Heaters oor o SEN MIU adore ag a INE MS 68 14 2 4 PG 13 5 Conduit Entry Set le pet e UY ee Epor ee ee ee ed P yaa dE 69 4 25 222252 ar ete a des ute iL 69 142226 Spray Hee ghee ed actos repe desse oi et meinte tue Se rd 69 T4 2 7 Sightglass arid Gaskets iis uu es E ted v NE RUE 69 14 2 8 Sightglasses coe tae u Cr AE ERs Haein eade ae e 70 14 2 8 1 Sightglass Installation O O A UR CICER EU E ue ca bad ja NORIS ARE 71 14 29 Articulating Bracket ipee Feel ee EE ep HAE SANARE qe EE 72 14 2 9 1 Articulating Bracket Installation
44. ico 15 6 1 Cable Conduits rel A der d be ua e ERA EM 15 6 2 Signal and Data Isolatign ss snie ERE x ERG UI NEL EUER MEE E HE 16 6 33 J3 Terminal Block s oro sdb T dent c eser dde oo lesen N 16 6 3 T External Trigger S une ICA e HERR Ks A AIR ARR IRE A O a oet Als 17 6 4 J2 RS 232C Serial Connector Local Programming 17 6 5 Serial Data Protocol a escort ice gepostet 18 7 MOUNTING penes DR eler ge Sas p Suwa uQ 19 7 1 Mounting Elements be PA a Pe TRE T9 7 1 4 Mounting 5565 ae 8 e Er SER EB de Aa E A Lah E T9 7 1 2 Mounting Holes A ce a PA ete ee de E Se og bei T9 7 1 3 Orientation of the Interface Module 19 7 2 Mounting Configurations s u car aa take betes eR RO a 20 7 2 1 Surface Mounting and Alignment mm ene eee 20 7 3 Other Mounting Configurations 2 0 meh ren 20 8 INSTALLATION Z s uy ent A ak ah aa Ue REA AC o e letet C Rn 21 8 1 Installation Procedure le ll aeu peg et RESP TRAE ITE CR xe uA E 21 8 2 Installation Drawings 0 vie re E ERR eh gust NUR PE ERO E geen RE ke 23 8 3 Field In
45. id at this point Power ON page 34 If the unit is too hot or too cold the unit may not turn on immediately Thermal Protection page 36 NOTICE At cold temperatures unit may take up to 45 minutes to turn on Range readings may then fluctuate for first 15 minutes Accuracy gradually improves as unit warms up Align and Program Program the laser pointer ON page 42 Confirm that the red POINTER ON LED on the interface board is illuminated CAUTION Visible Laser Light Do Not Stare into Beam Do not use binoculars or devices that collect light to locate pointer beam 22 290 000126 Rev A Nov 03 Watchman 3100 User Manual Installation 2 Locate the red pointer beam spot The pointer beam is co aligned with the rangefinder beam 3 Align the unit Chapter 9 Use shims or washers to adjust the unit s position until the unit is correctly aimed 4 Program the laser pointer OFF Confirm that the red POINTER ON LED on the interface board is now off 5 Program the unit for plant operation Chapter 1111 The unit is now ready for 4 20 mA analog output calibration if desired Final Steps After Alignment 1 Unplug the RS 232C data cable 2 Replace the lid of the interface module 3 Tighten all mounting hardware 4 Begin operation 8 2 Installation Drawings LEXAN WINDOW ZERO REF oor E
46. id out so that they cannot be installed together For 10 5 30 VDC operation standard Install F1 and F2 120 VAC operation 120 VAC option F3 Table 6 Replaceable Fuses Fuse Rating Function F1 2 10 5 30 VDC power input fast blow 24 VDC nominal F2 3A 24 VDC rangefinder heater F3 2A 120 VAC line fuse x 2A Internal rangefinder fuse slow blow The rangefinder is protected by a fourth fuse located on the back of the rangefinder connector panel Since F1 is a fast blow fuse it will blow first The rangefinder fuse can be replaced if necessary by opening the enclosure and the rangefinder see Servicing the Enclosure page 63 Storage Store the Watchman 3100 in a clean dry environment at temperatures between 20 C and 70 C Returning the Watchman 3100 to the Factory Before returning the unit note the serial number on the label and contact Optech or your Optech representative If the problem cannot be resolved by telephone fax or e mail Optech will issue a Return Authorization Number Do not ship a unit to Optech without a Return Authorization Number 290 000126 Rev A Nov 03 55 Maintenance Watchman 3100 User Manual If the repair is covered by warranty Optech will notify you and repair the unit promptly If the repair isdeemed chargeable Optech will quote the estimated repair costs and proceed promptly upon your approval 56 290 000126 Rev A Nov 03 Watchman 3100 User Manua
47. ided to the enclosure by installing the four mounting screws one in each corner 9 Replace the enclosure lid and tighten the four captive screws 10 Install the top two screws on the window assembly 11 Cable install align and program the unit for operation 290 000126 Rev A Nov 03 65 Troubleshooting Watchman 3100 User Manual 66 290 000126 Rev A Nov 03 Watchman 3100 User Manual Appendix Product Information 14 APPENDIX PRODUCT INFORMATION This appendix contains information on product options available from Optech 14 1 Hand Held Programmer Communications Configuration For use with the Watchman 3100 Optech s handheld programmer can be configured with a baud rate of 9600 kbps To configure the handheld programmer 1 Confirm that the keypad is powered by checking that the backlight is on or that data is dis played 2 Simultaneously press the F1 SHIFT and CTRL keys Hold them down until the menu appears on the display 3 Release the keys 4 Follow the instructions on the display a To change the baud rate press F1 until the desired rate is displayed b To quit the menu without saving changes press F4 The keypad settings will default to the original value when powered off and back on again c To save changes permanently press F5 290 0001 26 Rev A Nov 03 67 Appendix Product Information Watchman 3100 User Manual 14 2 14 2 1 14 2 2 14 2 3 Options SENTI
48. iring for example along a tripper car path The target must be mobile One person is required to monitor the range readings and a second person may be used to move the target 1 10 Position the Watchman 3100 directly in line with the target Position the target If the target is expected to move in operation for example a tripper car move it to one end of its path as close as possible to the Watchman 3100 Power the unit ON As an eyesafety precaution check that the laser pointer is programmed OFF The pointer defaults to OFF upon power up Record the analog signal output range from the Watchman 3100 If the target is expected to move in operation move it to the extreme end of its path as far away as possible from the unit Record the analog signal output range again Confirm that the analog outputs match the expected range readings YES The unit is properly aligned and can be locked into position NO Go to Step 9 Adjust the position of the unit or the target by adding washers or by other methods Repeat Steps 5 9 as required until the analog signal outputs match the expected range readings 290 000126 Rev A Nov 03 29 Alignment Procedures Watchman 3100 User Manual 9 3 Retro Reflector Method DANGER Visible Laser Light Do Not Stare Into Beam Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous exposure to laser light
49. l Troubleshooting 13 TROUBLESHOOTING The following table outlines the troubleshooting information in this chapter Table 7 Troubleshooting Summary Problem Action No operation 1 Check diagnostic LEDs Section 13 3 2 Check unit temperature Wait for unit to warm up or cool down Intermittent operation Section 13 4 1 Check error codes 2 Check unit temperature 3 Check operating environment 4 Check programming values Erratic fluctuating short readings 1 Try filtered last pulse mode Section 13 5 2 Wait for unit to warm up 3 Check rangefinder lens for dust Before contacting Optech follow the troubleshooting procedures in the table above and then conduct a local test Section 13 6 13 1 Error Codes Table 8 below lists the error codes that can be output Table 8 Error Codes V Analog Code Description Serial Output Output SATURATION Return signal too strong target material highly N A reflective Measurement may not meet typical accuracy specifications and may be shorter than actual PARTIAL DROPOUT Fewer than 50 of laser shots returned to unit lt N A Measurement valid but may not meet typical accuracy specifications SAT DROPOUT Both saturation and partial dropout Measure in N A ment may not meet typical accuracy specifica tions and may be shorter than actual OUT OF RANGE No laser shots returned to unit No range pro NO RANGE User vided selected
50. losures except the 3200 and 3315 Not intended for explosion proof environments or high temperature applications 14 2 11 Reflector Clusters For Watchman object positioner applications Minimum quantity of 3 14 3 Electrical Interface Detail CUSTOMER TERMINAL BLOCK PINS SERIAL PORT 1 2 NPT CONDUIT HUBS 2 Figure 20 Electrical Interface Detail 74 290 000126 Rev A Nov 03 Watchman 3100 User Manual Appendix Product Information Table 10 Terminal Block Pin Descriptions Terminal Connection 1 24 VDC 2 24 VDC 3 Spare 4 Analog Current Loop 4 20 mA 5 Analog Current Loop 4 20 mA 6 RS 422 Transmit 7 RS 422 Transmit 8 Data Common 9 LASER ENABLE 10 EXTERNAL TRIGGER 11 Spare 12 120 VAC Line Option 13 120 VAC Neutral Option 14 AC Ground Chassis Ground 290 000126 Rev A Nov 03 75 Appendix Product Information Watchman 3100 User Manual 76 290 000126 Rev A Nov 03
51. maintain the mating connection with the enclosure Optech recommends that wherever possible the conduit entry face down Cable and Power 1 Open the interface module 2 Detach the module from the enclosure to simplify the task of cabling if necessary 290 0001 26 Rev A Nov 03 21 Installation Watchman 3100 User Manual Save the five O rings on each mounting screw and the lid module seal Run your power and data cables through the cable conduits NOTICE Unit is fully sealed at factory Failure to maintain sealed entry will void warranty Make all connections to J3 the terminal block on the interface board To simplify the task of routing the wires remove the mating connector on the terminal block and re install it when this step is complete The unit operates off 24 VDC or 120 VAC option For J3 terminal assignments see page 16 or Figure 8 page 25 For local RS 232C test and programming plug in the optional keypad or remote device to J2 the 9 pin serial port use a remote device other than Optech s keypad a laptop computer see Signal and Data Isolation page 16 and Serial Data Protocol page 18 The device must be unplugged before the interface module can be closed Re install the interface module on the enclosure a Check the five O rings b Align the mating connectors c Plug in the module d Install the M4 mounting hardware on the lid but do not replace the l
52. ngefinder stays ON once it reaches operating temperature 290 000126 Rev A Nov 03 37 Operation Watchman 3100 User Manual 38 290 000126 Rev A Nov 03 Watchman 3100 User Manual Programming 11 PROGRAMMING IMPORTANT Use the RS 232C port to program via keypad or PC with serial link Most recent programmed settings are restored when the unit is powered ON laser pointer defaults to OFF To begin programming press M Rangefinder laser does not fire during programming Laser pointer continues to fire if pro grammed ON 11 1 Summary of Screens and Programmable Settings Programming software is embedded no separate software installation is necessary On the following two pages are shown the hierarchy of programming screens for the Watchman 3100 and a summary of settings that can be programmed via these screens More detailed infor mation is provided in the rest of this chapter 290 000126 Rev A Nov 03 39 Programming Watchman 3100 User Manual FORMAT FORMAT MENU AUNITS CRES POWER UP D DATA MAIN MENU A FORMAT B ANALOG ANALOG ANALOG MENU A4 mA C NO RANGE B20mA DSATURATE MEASUREMENT UNITS AMETERS B FEET UPON POWER UP SHOW MAIN MENU B PROCESS VARIABLE RESOLUTION ALOW B HIGH DATA A RANGE ONLY B RANGE DROPOUT INT C RANGE VELOCITY INPUT LEVEL AT 4 mA 20 mA at xxxxxx cm INPUT LEVEL AT 20 mA NO RANGE ALARM A4 B 20 mA C IGNORE SATU
53. ou can use a PC instead The Watchman 3100 interfaces easily with any PC terminal communications program To establish a serial data connection your computer must be equipped with an RS 232C or RS 422 port Use the follow ing settings RS 422 Tx only RS 232C Tx Rx bi directional ASCII characters Baud rate 9600 Data bits 8 Stop bits 1 Parity None Flow control None Xon Xoff Serial port According to your computer configuration For Windows 98 or Windows NT use the HyperTerminal program with the below steps If your PC is equipped with Windows 3 1 software follow these steps 1 Select the ACCESSORIES icon 2 Select TERMINAL and then SETTINGS and COMMUNICATIONS 3 Set communications parameters as listed above 4 Save the correct settings to a file for quick recall 18 290 000126 Rev A Nov 03 Watchman 3100 User Manual Mounting 7 7 1 7 1 1 7 1 2 7 1 3 MOUNTING IMPORTANT For installation drawings and information see Chapter 8 Mounting Elements The Watchman 3100 enclosure provides a variety of mounting options to suit specific applica tions and installations The enclosure and the interface module are water proof and dust proof as long as the module is properly installed on the enclosure and all O rings and seals are properly installed and in good condition Mounting Bosses The aluminum mounting bosses on the sides of the enclosure have two external threaded mount ing
54. ps Rangefinder DC Heater At internal temperatures below 0 the Watchman 3100 rangefinder does not fire or output data When the unit is powered on at such a cold temperature a heater incorporated into the rangefinder turns on automatically to warm the unit to an operable level At very cold temperatures it may take up to 45 minutes before the rangefinder is ready to fire If your unit includes an AC heater the warm up time will be shorter The rangefinder begins firing when its internal temperature reaches 5 and the heater turns off at 8 C Under most conditions the rangefinder temperature will remain above 5 C from that point on Should the temperature drop the heater will turn on again 120 VAC Enclosure Heater Option For operation in very cold environments where 120 VAC is available Optech offers an enclosure heater as an option If the temperature of the rangefinder inside the enclosure is below 0 C when the Watchman 3100 is powered ON the rangefinder will not turn on until the heater has warmed the rangefinder to an operable level about 0 10 C This may take up to 30 minutes depending on the ambient tem perature after which the rangefinder will be warm enough to turn on Thereafter the heater s thermostat will operate the heater up to a temperature of 20 25 C at which point it will shut off The thermal cutoffs of the rangefinder and the heater thermostat set point are overlapped to ensure that the ra
55. r Manual 10 2 10 3 10 4 10 4 1 Powering ON OFF The Watchman 3100 has no power ON OFF switch It is turned ON OFF by the external power source Note that the laser pointer fires continuously if it is programmed ON Laser Footprint Figure 10 illustrates the dimensions of the laser beam footprint at various ranges 140 mm Spot Size 20 meters 60 feet Distance 5 5 inches Spot Size Figure 10 Footprint of Rangefinder Laser Beam Accuracy Accuracy and Repeatability The Watchman 3100 averages a number of laser shots to produce each range reading The number of shots averaged affects the accuracy of a reading the higher the number of shots the higher the accuracy of the resulting reading Since the Watchman 3100 fires a fixed number of shots per second the measurement update rate rate of readings determines the number of shots that can be averaged and thus the accuracy of the range reading Accuracy T As Measurement Update Rate You can program the desired accuracy Table lists the accuracy and repeatability of Watchman 3100 range readings at selected measurement update rates The column headings are defined as 34 290 000126 Rev A Nov 03 Watchman 3100 User Manual Operation 10 4 2 10 4 3 Absolute accuracy Absolute accuracy over the full range of operating tempera tures and material reflectives and at any distance with 1 sigma standard deviation Operating accuracy Acc
56. rared Laser page 7 CAUTION Visible Laser Light Do Not Stare Into Beam Do not point or install the unit at eye level where people may be working Check the range output locally on the analog and serial lines RS 232C serial Use Optech keypad or similar device Analog Use digital multimeter Move the target while monitoring the unit s output Check that the serial and analog outputs ramp up smoothly If the range readings under test are Consistent The problem may be related to the operating environment Go to Step 8 Inconsistent Consult Optech Check all electrical interconnections and related equipment and verify that there are no envi ronmental obstacles such as dense dust and dirty windows Reprogram the unit with its original analog limits 62 290 0001 26 Rev A Nov 03 Watchman 3100 User Manual Troubleshooting 13 7 Servicing the Enclosure of C POINTER ON JI 18 POWER Optech Figure 13 Rangefinder Connector Panel Inside Enclosure NOTICE Dust inside the rangefinder may cause incorrect readings When the rangefinder is outside its enclosure always keep the rangefinder in a clean and dust free environment 13 7 1 Removing the Rangefinder from the Enclosure 1 Power the unit OFF and disconnect all external cabling 2 Move the Watchman 3100 to a clean environment such as a laboratory or office Protect the inside of the
57. ss A D To return to the range display Press E The rangefinder laser does not fire during programming but the laser pointer continues to fire if it is programmed ON 11 4 Format Screens FORMAT A UNITS C RES B POWER UP D DATA Press E to exit 11 4 1 Measurement Units for Range Readings MEASUREMENT UNITS A METERS B FEET Press E to exit Select whether you wish the unit to measure range in meters or feet 290 0001 26 Rev A Nov 03 43 Programming Watchman 3100 User Manual 11 4 2 Power Menu UPON POWER UP SHOW A MAIN MENU B PROCESS VARIABLE Press E to ex1t Select whether you wish to see the main menu or the process variable when the unit is powered up 11 4 3 Range Resolution RESOLUTION A LOW B HIGH Press E to ex1t Resolution Example A LOW 0 00 m 1 cm or 0 1 ft 7 54 m 24 1 ft B HIGH 0 000 m 1 mm or 0 01 ft 7 545 m 24 17 ft 44 290 000126 Rev A Nov 03 Watchman 3100 User Manual Programming 11 4 4 Data DATA A RANGE ONLY B RANGE DROPOUT INT C RANGE amp VELOCITY Press E to exit A RANGE ONLY Only range readings are displayed in the selected measurement units B RANGE DROPOUT INT In addition to range readings two other useful diagnostic values are displayed The number of dropouts laser shots that do not return to the unit per range reading is a function of the selected update rate at a high update rate fewer sho
58. terface to oe eC eem eb ES eee tU etum RE tete 25 ALIGNMENT PROGEDURES ssezierd Xena le ep dug Wie paw QE PLURA aie Der EIS 27 9 1 Laser Pointer Method s entes Rer ver vc a bs rU oe ek Ae MES 28 9 2 Distance Method oa t a ERU bete Ee DEP tto diii cm 29 9 3 Retro Reflector Metliod ss wes eter e rr eR E aoe tae heeds 30 10 OPERATION sebi viv saa a ei RUNI RUP REG qa IR EP E 33 Operating Steps CC EHE LUTEA Da etes 33 10 2 Powering ON OFF ek uh a eee e drea epee E E MR Aer 34 10 3 Laser Footprint 252 54 eee eed des Pea SEA Da kaspa aq a do x Bolt ie kai 34 10 4 JACCUFIGY EN e SE RECS oret datur UT N E 34 10 4 1 Accuracy and hm reme 34 10 4 2 Accuracy Restrictions a sei rar basa eaula Ata ate ae ERR RD d een gu 35 10 4 3 Eow Tempe rat re Start eise edere ER GEN a Mum bas de d 35 10 57 Thermal PrO EGU ON 2 eroe sud ee et Ut E AC 36 10 5 1 High Temperature Rangefinder Protection 36 10 5 2 High Temperature Laser Pointer Protection 37 10 5 3 Rangefinder DC 3 ret ert Oe bee debe SEAR DO a SA ws 37 10 5 4 120 VAC Enclosure Heater Option
59. tion page 67 7 3 Other Mounting Configurations For assistance with other mounting options please contact Optech or your Optech representative See also Appendix Product Information page 67 for information on product options that may apply to your installation 20 290 0001 26 Rev A Nov 03 Watchman 3100 User Manual Installation 8 INSTALLATION 8 1 Installation Procedure CAUTION Visible and Invisible Laser Light Do Not Stare into Beam Before closing the interface module program the laser pointer to OFF Watchman 3100 may fire as soon as power is supplied NOTICE Do not point the Watchman 3100 at the sun Strong sunlight reflections can cause erratic range readings This procedure assumes that you are already familiar with the cabling and mounting information in Chapters 6 and 7 For installation drawings see page 23 For information on installing product options see Appendix Product Information page 67 Install 1 Locate a suitable installation site Mounting page 19 2 Install the unit but do not secure it in place until final alignment is complete For Use Standard installation M8 x 1 25 cap screws on mounting bosses Extra rigidity security 1 4 NPT mounting on mounting bosses Surface mounting M8 x 1 25 screws into enclosure base 3 If you rotate the interface module to facilitate the cable routing or entry location remember to rotate the D37 connector on its base as well to
60. to LAST PULSE but the rangefinder is now optimized to range through very thick fog steam rain snow or dust This mode provides usable and stable ranges at the cost of possible lower accuracy 0 5 to 8 cm The PARTIAL DROPOUT symbol lt may appear ahead of the serial range output Note that the unit relies on line of sight laser light must be able to reach the target material and return to the unit for a measurement to be made Filter Distance and Time Out FILTER A FILTER DISTANCE B FILTER TIME OUT Press E to exit FILTER DISTANCE IS O cm Press A to change Press E to exit FILTER TIME OUT IS 0 Press A to change Press E to exit These screens provide a sliding window filter for both the analog and serial output The Watch man 3100 assumes that the longest readings are valid and therefore uses a one way window to ignore short readings outside the window This screens out interference and obstacles passing between the unit and the target material it is monitoring A valid reading within the window resets the reference for the next measurement 48 290 000126 Rev A Nov 03 Watchman 3100 User Manual Programming Filter Distance One Way The filter distance determines how much shorter a valid reading can be from the previous read ing Any shorter reading outside the window is ignored while all readings longer than the previ ous one are considered valid The unit re transmits the
61. ts are averaged per reading The intensity of the reflection is shown as a value from 0 6375 C RANGE amp VELOCITY In continuous mode outputs range as well as the velocity of the target as follows Velocity Previous range reading Current range reading Update rate Velocity is an absolute value no positive or negative value is assigned 11 5 ANALOG Screens 4 20 mA Analog Range Settings ANALOG SETTINGS A 4 mA C NO RANGE 20 mA D SATURATE Press E to exit 4 mA Limit is cm Press A to change Press E to exit 290 0001 26 Rev A Nov 03 45 Programming Watchman 3100 User Manual 20 mA Limit is 3000 cm Press A to change Press E to exit These screens set the ranges corresponding to the 4 mA and 20 mA analog limits Ranges can be set for zero span and inverse span and are displayed in the current units of measurement centi meters or inches The maximum value for either limit is 500 000 cm 196 850 inches Note that the value of the analog limit is exact if centimeters are used but round off errors reduce the accuracy using feet to under one inch When you press A to change the limit the following prompt appears INPUT A NUMBER FOR THE SETTING Type a value and press ENTER Press E to save the value and check that it is now displayed NO RANGE ALARM A 4 mA C IGNORE B 20 mA Allows the user to program an analog output response to a no range reading s
62. uch as no signal return SATURATE ALARM A 4 mA C IGNORE B 20 mA Allows the user to program an analog output response to a saturated reading such as too strong a signal 46 290 000126 Rev A Nov 03 Watchman 3100 User Manual Programming 11 6 Modes Screens MODES OUTPUT MODE FILTER PULSE D TRIGGER Press E to exit OUTPUT MODE A DIRECT B EXTRA AVERAGING Press E to exit A DIRECT Outputs the range reading directly B EXTRA AVERAGING Outputs a rolling average of the last five readings 11 6 1 First Last Pulse Range Filter PULSE A FIRST PULSE B LAST PULSE C FILTERED LAST PULSE Press E to exit A FIRST PULSE This mode is best if there is a clear and unobstructed view of the target material with no fog steam rain snow dust or other possible targets in the way Range readings are made to the first object encountered B LAST PULSE This mode improves ranging through fog steam rain snow or certain quantities of dust It can provide the correct range even if stationary objects partly block the unit s line of sight as long as the objects are separated by more than 3 m 10 feet and part of the laser 290 0001 26 Rev A Nov 03 47 Programming Watchman 3100 User Manual 11 6 2 beam travels beyond them Range readings are made to the last object encountered fil tering out earlier returns C FILTERED LAST PULSE This mode is similar
63. unicating via RS 232C and using ASCII characters Program ming is discussed on page 39 Factory settings or the most recent programmed settings are saved and restored whenever the unit is powered ON again Operating Steps Before powering the unit check that Interface cables are firmly attached at both ends and will not come loose If using a PC it is properly configured for remote programming and CAPS LOCK is on Serial Data Protocol page 18 Power ON The software version is briefly displayed on your keypad or PC In continuous mode the Watchman 3100 begins to report range readings within seconds In external trigger mode the unit reports readings only when triggered External Trigger page 17 NOTICE At cold temperatures unit may take up to 45 minutes to turn on Range readings may fluctuate for the first 15 minutes Accuracy gradually improves as the unit warms up Review and follow the laser safety precautions in Visible and Infrared Laser page 7 Program other aspects of the Watchman 3100 as outlined in Chapter 11 Programming on page 39 Review also the operating notes in this chapter Programming software is embedded no separate software installation is necessary In external trigger mode trigger range readings as desired External Trigger page 17 Monitor range readings and change programmable settings as desired 290 000126 Rev A Nov 03 33 Operation Watchman 3100 Use
64. uracy within limited variations in temperature material reflectivity and distance associated with many typical installa tions Repeatability Under steady state conditions with 1 sigma standard devia tion Table 3 Accuracy and Repeatability at Selected Measurement Update Rates A RN Absolute Accuracy Operating Accuracy Repeatability Within Within mm Within mm mm 1 reading per 5 sec 20 5 3 1 reading per 1 sec 20 5 3 2 readings per 1 sec 25 7 4 5 readings per 1 sec 30 10 6 10 readings per 1 sec 40 15 9 20 readings per 1 sec 80 60 35 Accuracy Restrictions At short range a very strong return from a highly reflective target such as reflective tape will satu rate the Watchman 3100 s range detector and may produce a range reading with a degraded accuracy In this case a SATURATION or SAT DROPOUT error code will be output with the range Table 8 page 57 A highly reflective target at less than 10 m may produce a saturated range reading indicating that the target is closer than it really is Low Temperature Start If the Watchman 3100 is cold when it is first powered ON it may begin firing before all its com ponents have fully warmed up In this case initial range readings may fluctuate Range accuracy will gradually improve as the unit s internal temperature stabilizes which takes about 15 minutes 290 000126 Rev A Nov 03 35 Operation Watchman 3100 User Manual 10 5 Thermal Protection
65. ure dust and water proof opera tion The Watchman 3100 operates from a nominal input voltage of 24 VDC 120 VAC option avail able Power input analog data input output and RS 422 output are isolated up to 1000 VDC The local RS 232C port is not isolated Options are available to customize the Watchman 3100 for your particular operating and mount ing requirements see Appendix page 67 Principle of Operation The rangefinder uses a laser diode to make non contact range measurements to almost any target or material operating in both dark and well lit environments without using retro reflectors or mir rors The narrow laser beam produces no false echoes and resolves small targets at long range It 290 000126 Rev A Nov 03 Watchman 3100 User Manual System Description 2 2 2 3 2 4 can be reflected from a diffuse surface at virtually any angle and still return to the unit to produce a range measurement To calculate the range the time of flight of the laser pulse to and from the target material is mea sured by a high precision counter and then converted into a range reading by a microprocessor By firing the laser rapidly and employing averaging to reduce random errors the rangefinder pro duces high resolution readings independent of range Lasers The Watchman 3100 uses two laser sources Rangefinder laser Invisible infrared beam wavelength 905 nm used to measure distance Laser pointer Visible beam wavel

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