Manual - Scene7
Contents
1. mem 32 Table of Figures Figure 1 TES wih Junction eda Moco 1 Figure 2 Wiring Diagram from IR700 to Control 2 Foure 3 ModellR Oa rc rere wet 4 Figure 4 Model IR700 with junction 7 Figure 5 IR700 Mounting Dimensions 8 FIQGUKS 6 I7 00 with va da neat era tal nnd euch av Ra a bro Rad 12 Figure 7 Wiring Diagram from IR700 to Control 13 Figure 8 IR700 Zero Switch LED During Zeroing and Calibration 16 Figure 9 IR700 optical window nennen nennen nnn nnns 20 Figure 10 Outline and Dimensional Drawing IR700 inch 31 Table of Tables IE Tt Wining Chall c 1 TE 22 WV ING 10 OM CATON w 24 Table 4 Analog quid P 29 GENERAL MONITORS Model2. 1 1 66 6 nana anna 14 4 1 Zeroing Gas Check Tests and 14 4 2 IR700 Stand alone Operation and 15 4 3 CRECE MOOG seein E E 18 4 4 Detector Response Time RET 18 EMI MES 19 5 1 Developing a Maintenance Schedule 19 5 2 Gas Checks Zeroing and 19 5 3 Cleaning and Lubricating the IR700 IR4000S 20 5 4 sil s X 20 6 0 TROUBLESHOOTING 21 TO MODBUS INTERFACE aaa Aaa aru ER 23 aana 24 APPEND 25 9 1 MN AN AM ect din lem eet cen A A TAA E EA E VE A A 2 2 2 25 9 2 CO DCF IOI EE 26 9 3 27 9 4 vaa Cone ta ten a aa aS 30 m VV GENERAL MONITORS Model IR700 9 5 CONICA arein ETEei OO 30 9 6 Engineering 31 9 7
3. 40005 Units If the neoprene rubber gasket O ring the cover of the 40005 enclosure is found dry it should also be lubricated with the anti seize thread lubricant that is included with the IR700 IR4000S CO units or is available on order from General Monitors P N 2085 As an alternative to grease PTFE Teflon tape may be used provided that it complies with installation requirements 5 4 Storage The Model IR700 Gas Detector and IR4000S CO Monitor System should be stored in a clean dry area and within the temperature and humidity ranges noted for environmental specifications Insert the red dust caps into any vacant cable entry holes while the unit is stored 20 GENERAL MONITORS Model IR700 6 0 Troubleshooting The IR700 will alert the operator that there are problems in a number of ways The table on the following page shows the value for the analog output the value read through Modbus register 2 if Modbus is being used and the fault code shown as F and a number on the IR4000S CO display if connected If the IR700 is connected to a zero switch then the LED in the zero switch will blink at a rate of 5 flashes per second to show that the detector needs attention HART Troubleshooting 1 2 3 Verify that the IR700 is configured for HART Verify that the HART modem or HART handheld device is working by checking it against another HART field device Verify that the HART sof
4. GENERAL MONITORS Model IR700 Infrared Point Detector for Carbon Dioxide Gas Detection Applications DOG Qu 27 FLUE The information and technical data disclosed in this document may be used and disseminated only for the purposes and to the extent specifically authorized in writing by General Monitors Instruction Manual 12 11 General Monitors reserves the right to change published specifications and designs without prior notice 700 Part No MANIR700 Revision A 12 11 GENERAL MONITORS Model IR700 This page intentionally left blank GENERAL MONITORS Model 700 Table of Contents TABLE OF FIGURES flee IV TABLE OF TABLES c IV GUICK START 1 1 0 INTRODUCTION 2 1 1 3 1 2 Special Cautions and 3 152 Installation Operation and Maintenance 3 2 0 PRODUCT DESCRIPTION EDAM Rap FEE NIKE MIU MEER a 4 SXUD DIEN 0 6 3 1 Attaching the IR700 to a Junction Box or 40005 7 3 2 Mo nting d RR euo NER 8 3 3 Ce E E E E a E o EUR 10 3 4 APPI MO POWO EA 12 4 0 OPERATION AND CONFIGURATION
5. LED for approximately three seconds The LED in the switch will light to show proper placement 16 GENERAL MONITORS Model IR700 e Remove the magnet and the LED will flash on for one second and off for one second to indicate that the unit is attaining a zero value Zeroing in Figure 8 e When the unit has finished zeroing the LED will turn on and flash off quickly once per second for 30 seconds Zero Complete NOTE If an error occurs during the zeroing calibration sequence the LED will flash on and off rapidly Fault 4 2 3 Calibration 1 Zero the Unit Flow nitrogen to the detector Apply the General Monitors magnet that was included with the unit to the Zero Switch LED for approximately three seconds The LED in the switch will light to show proper placement e Remove the magnet and the LED will flash on for one second and off for one second to indicate that the unit is attaining a zero value Zeroing in Figure 8 e When the unit has finished zeroing the LED will turn on and flash off quickly once per second for 30 seconds Zero Complete NOTE If an error occurs during the zeroing calibration sequence the LED will flash on and off rapidly Fault Return to Normal Operation or Start Calibration If the magnet is not applied again the unit will return to normal operation To continue on and calibrate apply the magnet again and the unit will enter the calibration mode The LED will flash off quickly
6. 4 4 Detector Response Time A valid response time of a gas detector must take into account a static gas presence as it occurs in the field with a gas leak Tests performed on site use a flow method to verify detector function only as gas enters the optical path with its splashguard in place With regard to the time response this specification is obtained by testing the gas detector with a splashguard using test methods that are compliant with agency performance standards A chamber is filled with a known concentration of gas and the IR700 is then exposed to the gas This method instantly fills the optical path of the detector to achieve the stated response times for the IR700 The products offered by GM are not for the purpose of testing response time but as a method to allow a user to check that the unit is responding to gas If it is required to demonstrate a reading of 50 full scale on site this can be achieved using the calibration cup However you need to allow adequate time for the test gas to reach the detector This time is due to the ambient air located in the optical path of the detector having to be replaced progressively by the test gas This replacement of ambient air is quicker at the beginning but longer for the last percentage because it is linked to the slow replacement of air dilution by the test gas This test is only to indicate a gas level of 5096 full scale within the calibration cup and is not a reflection of the response tim
7. the active wavelength The reference source operates at a wavelength that is adjacent to the active wavelength but not absorbed by the gas or gases By comparing the signals from these two sources the concentration of the gas can be measured using the differential absorption technique This method of gas detection comes under what is commonly known as the non dispersive infrared NDIR absorption principle The reference wavelength is chosen suitable to compensate for any interference that can otherwise occur from atmospheric variation e g humidity dust snow fog steam temperature etc Control Electronics The Model IR700 operates from an unregulated 24 VDC nominal input which is fed to an onboard power supply that produces all of the necessary voltages within the unit The microprocessor constantly monitors the infrared wavelengths and performs mathematical operations on these values in conjunction with values obtained during the factory set up process The microprocessor generates output information and feeds it to the digital analog converter to produce a 4 to 20 milliampere mA signal that is proportional to O to 100 full scale of the detector The microprocessor program also monitors other conditions such as the supply voltage and the optical path integrity The Model IR700 provides a two wire RS 485 addressable communications link conforming to the Modbus protocol that is used to monitor the IR700 s status and settings
8. Temperature Range Operating 40 F to 122 F 40 C to 50 C Storage 76 F to 185 F 60 C to 85 C Humidity Range 10 to 95 RH non condensing Accuracy is not affected by humidity as long as no condensation accumulates on the windows 9 5 Communications 9 5 1 RS 485 Interface for Modbus The Model IR700 has built in serial communications in the form of a half duplex RS 485 digital serial interface designed to conform to EIA 485 specifications The format is in binary data transferred at 9600 baud with 1 start bit 8 data bits 1 stop bit and no parity for Modbus RTU communication A programming guide is available from the General Monitors website that gives details on all the available Modbus RTU commands 9 5 2 HART The IR700 HART Field Device Specification provides details on HART commands The specification is available from the General Monitors website 30 gt atum GENERAL MONITORS Model IR700 9 6 Engineering Documentation NAME THUMB SCREW PLATE SPLASH GUARD 3 4 NPT OPTICS HOUSING HOUSING 8 87 ELECTRONICS Figure 10 Outline and Dimensional Drawing IR700 inch measurements 31 2 GENERAL MONITORS Model IR700 9 7 Ordering Information 9 7 1 System Components Description Part Number Model IR700 Infrared Point Detector IR700 Instruction Manual Model IR700 MANIR700 Model IR700 HART Field Device Specification MANIR700H Model IR700 Modbus Programming Guide MANIR7
9. disabled and the analog signal is held 1 5 mA The HART 3 5 mA configuration is not compatible with the magnetic switch As you follow the procedure steps refer to the figure shown on the following page for the LED indicator 15 GENERAL MONITORS Model IR700 2 Seconds Ei i i i i i i i Zeroing Zero Complete Waiting for Gas Gas Present Fault Re Calibration Complete Figure 8 IR700 Zero Switch LED During Zeroing and Calibration Review the general guidelines in Section 4 1 on Zeroing Gas Check Tests and Calibration Make sure the windows are clean and there is nothing blocking the optical beam 4 2 2 Zero Only The junction box used with the IR700 is fitted with a switch to zero the detector JUNCTION MOX FART 7 u LAKE FOREST CALIFORNIA J nissasc CLASE ns DPEN CARUIT Enron TYPE x OV GROUP B ap p coin Tet aig ALME WARNING COMMUN sear m f nios TTY Cur Zero Switch Zero the Unit To insure a true zero and maintain IR700 accuracy the IR700 must be purged with nitrogen for a sufficient time to remove all naturally occurring carbon dioxide Apply the General Monitors magnet that was included with the unit to the Zero Switch
10. loop Wiring Connections WIRE WIRE COLOR SIGNAL BLACK GREEN FIELD GROUND FG 424M 24 V 6 WHUBU Table 2 Wiring Chart The IR700 operates on nominal power of 24 VDC The customer must provide primary DC voltage power unless a General Monitors readout relay display module with an internal power supply is used Since the IR700 is designed to continuously monitor gas levels a power switch is not included in order to prevent accidental system shut down NOTE Power should remain disconnected until all other wiring connections are made 3 3 1 Power Connections To supply power to the Model IR700 connect the red lead from the IR700 to the 24 VDC terminal on the power supply Connect the black lead from the IR700 to the power supply Common Refer to the manual of the power source being used for more detailed instructions An internal diode protects the system in the event of inadvertent supply reversal 3 3 2 4 20 mA Output A 4 to 20 mA output signal is provided by the Model IR700 and can be sent to a General Monitors readout relay display module or any industrial device that can accept a 4 to 20 mA 10 GENERAL MONITORS Model IR700 signal for computer based multi point monitoring The Analog Output connection provides a signal for use in displaying ppm gas readings special operation or fault conditions The maximum load for the Analog Output signal is listed in Section 9 3 Specificat
11. of CAL 2 Remove gas when directed and time out occurred 3a Check CAL cup for proper seating on Bit 6 Failed to Complete 3 Leaky CAL cup resulting in unstable unit Calibration signal 3b Check CAL cup seal and replace CAL cup if damaged 4 Attempted to CAL with too much wind 4 Calibrate at a much less windy time or resulting in unstable signal shield the unit and CAL cup from the wind 1 Detector windows or beam path are blocked by dirt spider webbing or other 1 Clean detector beam path and windows F3 Bit 2 cibi 2 Beam Block foreign matter 2 The IR700 must be returned to the 2 Detector or source failure factory or authorized service center for repair 1 4 20 mA miswired 1 Check and correct wiring F4 1 25 Communications Fault 2 4 20 mA output is 0 mA 2 Correct fault condition in IR700 F5 Bit 4 125 CAL Wire brown 1 CAL Wire brown not in connector Check and ensure proper connection of Shorted Wire to board connector 1 Power supply not outputing greater Check the supply voltage and replace than 20VDC d supply if necessary F6 Bit 5 1 25 Low Supply Voltage 2 Check the supply voltage at the IR700 2 Voltage loss due to wiring field and adjust supply to 24VDC at the IR700 or replace wiring with larger gauge 1 Cycle power wait 2 minutes if the fault 1 Internal memory glitch clears then check all menu settings and F7 Bits 9 13 amp 15 1 25 Electronics Error recalibrate the IR700 2 Intern
12. states please dispose of in accordance with existing federal state and local environmental control regulations 34
13. temperature rise estimated connection losses allowances for error in distance measurement and other variables particular to the customer installation Sample Calculations for Power Cable V supply 24 VDC V device 20 VDC l device max 0 20 A cable resistance per meter 9 00 ohms per meter at maximum ambient temperature for 2 5 cable Maximum distance from supply to Receiver 1 2 x V supply V device I device max x cable resistance per meter Maximum distance 1 2 x 24 20 0 20 x 9 00 1000 1110 meters Sample maximum distances from supply to device 16 AWG 14 AWG 1 5 mm2 2 5 mm2 Typical 5 00 ohms 3 00 ohms 16 0 ohms 9 00 ohms Resistance 1000 ft 1000 ft 1000 m 1000 m 2000 feet 3330 feet 630 meters 1110 meters Sample Calculations for Analog Output Cable Maximum load is 600 ohms If the AO device has an input impedance of 500 ohms the total cable resistance must not exceed 100 ohms where maximum load device load cable resistance For 16 AWG cable with resistance of 5 ohms 1000 feet the maximum distance from detector to AO input device is Maximum load AO device load x cable unit distance cable unit resistance 2 distance from detector to AO input device 600 500 x 1000 5 2 10 000 feet 29 GENERAL MONITORS Model IR700 AWG OHMS 1000 FT FEET METERS 4 550 1 390 7 140 2 180 3 050 9 4 Environmental Specifications
14. 0 21 7 mA 6000 Startup mode and critical fault for non HART unit Startup mode and critical fault for HART unit Zero Calibration and Gas Check Mode Dirty Optics 0 5000 ppm Overrange HART units can be configured to a minimum output current of 3 5 mA if the host equipment is incapable of working below this level Electrical Classification RFI EMI Protection Class 1 Divisions 1 2 Groups B C and D Ta 40 C to 75 C Type 4X Ex d IIB H2 T5 Gb IP66 Ta 60 C to 75 C Ex t IIIC T100 C Db Complies with EN55011 EN50270 28 2 GENERAL MONITORS Model IR700 9 3 4 Analog Current Output The following table shows the values of the analog output when in certain modes or fault conditions Condition Type Non HART Units HART Units HART Override Mode Start Up Fault 1 25 mA Zero Gas Check or Cal Dirty Optics 0 100 ppm 4 20 mA 4 20 mA 4 20 mA 21 7 mA 21 7 mA Table 4 Analog Current Output HAHT units can be configured to a minimum output current of 3 5 mA if the host equipment is incapable of working below this level 9 3 5 Cable Requirements It is the responsibility of the facilities engineer to comply with all regulatory legal and safety issues concerning appropriate wiring for the facility The sample calculations are for reference only Customers must derive the distance from supply to device based on cable specifications expected maximum ambient temperature and cable
15. 00M Multi Channel Controller for Hydrocarbon MC600 H2S and Toxic Gas Monitoring Applications 5 2 Single Channel Zero Two Series TA502A Trip Amplifier IR4000S Single point Monitor MANIR4000SCO2 32 GENERAL MONITORS Model IR700 9 7 2 Spare Parts and Accessories To order spare parts and or accessories please contact the nearest General Monitors representative or General Monitors directly and give the following information 1 Part Number 2 Description 3 Quantity 9 7 3 Recommended Spare Parts for One 1 Year 31037 1 9 7 4 Accessories Double Magnet Assembly if a zero switch is used 31305 1 Junction Box with magnetic switch CSA FM 31305 2 Junction Box without magnetic switch CSA FM 31306 1 Duct Mount Junction Box 31420 1 Flow Block for gas sampling system 31421 3 Junction Box with magnetic switch ATEX 31421 4 Junction Box without magnetic switch ATEX 31478 1 IR700 Gas Kit 31545 1 Rain Guard Assembly 32545 1 Splash Guard standard 32545 2 Splash Guard no screen 32554 1 Calibration Cup Flow Block 33 Model 700 GENERAL MONITORS ADDENDUM Product Disposal Considerations This product may contain hazardous and or toxic substances EU Member states shall dispose according to WEEE regulations For further General Monitors product WEEE disposal information please visit www generalmonitors com customer support faq general html All other countries or
16. 00S CO Before you can mount an IR700 device you must first attach it to an IR700 junction box or an IR4000S single point monitor CAUTION To prevent damage by static electricity avoid contact with circuit card components on the IR4000S All wire connections should be made to the terminal blocks To Attach an IR700 to a Junction Box IR4000S 1 Apply the supplied anti seize thread lubricant to all conduit entries to prevent binding Remove the cover from the junction box or monitor enclosure by loosening the four captive screws with a 5 mm Allen wrench and lifting the cover straight up otrip and trim the wires from the IR700 as needed and thread them into either the right or left wiring conduit of the enclosure Once the wires are threaded into the enclosure screw the IR700 securely into position An example is shown below FRAG AHD LICERET ANT THE PALA CORPER LET Figure 4 Model IR700 with a junction box Fasten the IR700 wires to a wiring connector inside the enclosure Once the two units are attached you may replace the cover on the enclosure attached to the IR700 using the four captive screws or leave it off until additional cabling from the enclosure is completed GENERAL MONITORS Model IR700 3 2 Mounting Instructions The IR700 is mounted using the bolt holes on an attached junction box or monitor enclosure IR4000S monitor is often mounted remote f
17. A analog signal proportional to O to 5 000 ppm gas concentration Modbus communications provides additional information such as beam block percentage for preventative maintenance and event logging sensor data and status information from the IR700 can be transmitted to a variety of General Monitors readout units The IR700 operates from an unregulated 24 volt DC supply aL ms T n bare BHEN va WARNING coves caen yg Pa s Figure 3 Model IR700 GENERAL MONITORS Model IR700 Features and Benefits This is a partial list of features and benefits for the Model IR700 infrared point detector e No routine calibration required e Fail to safe operation e 4 20 mA output e Modbus communications link e Optional HART interface e Heated optics eliminate condensation Dirty optics indication Reading not affected by air velocity e Interfaces directly with the IR4000S CO monitor MC600 controller IRFMD monitor and 5 2 trip amplifier GENERAL MONITORS Model IR700 3 0 Installation Receipt of Equipment All equipment shipped by General Monitors is packaged in shock absorbing containers which provide considerable protection against physical damage The contents should be carefully removed and checked against the packing list If any damage has occurred or there is any discrepancy in the order please notify General Monitors as soon as po
18. Calibration Guidelines Calibrating the detector corrects any errors that may be affecting the ppm measurement that is taking place You should use the General Monitors gas check kit for calibration Section 4 1 1 1 describes the gas check kit equipment in more detail You may need to calibrate the IR 00 detector under several circumstances lf the gas check test indicates that the detector needs adjustment f you are moving the detector to a higher altitude location every 1000 feet difference in altitude requires recalibration 4 2 700 Stand alone Operation and Configuration The IR700 does not have built in operation and configuration menus without IR4000S COs However zeroing and calibration can be accomplished using the Zero magnetic Switch LED on the junction box that is directly attached to the IR700 You should zero the Model IR700 detectors occasionally to assure proper detector operation Calibration is necessary if gas check readings show the unit is reading inaccurately In addition many operational functions are available using the Modbus or HART interface from a control room device as described in separate manuals available from our website 4 2 1 To Zero and Calibrate a Stand alone IR700 Using a Magnetic Switch This procedure describes how to use the IR700 junction box magnetic switch to zero and calibrate the IR700 Once zeroing or calibration begins the alarm and warning relays are automatically kept
19. IR700 Quick Start Guide Mounting and Orientation The Model IR700 should be mounted horizontally Figure 1 to reduce the likelihood of dirt and dust build up on the windows For optimum performance the splashguards should be located on the top and bottom as shown in Figure 1 Apply the supplied thread lubricant sealant to all conduit entries before use to prevent binding Figure 1 IR700 with Junction Box Wiring Connections TERMINAL WIRE COLOR SIGNAL 1 BLACK COM 2 GREEN FIELD GROUND FG 3 RED 24 V 4 WHITE 4 20 mA 5 BLUE MOD1 6 WHT BLU MOD1 7 BROWN CAL Table 1 Wiring Chart NOTE Power should remain disconnected until all other wiring connections are made Power Connections To supply power to the IR700 connect the red lead from the IR700 to the 24 VDC terminal on the power supply Connect the black lead from the IR700 to the power supply Common Refer to the manual of the power source being used for more detailed instructions GENERAL MONITORS Model IR700 Applying Power Before applying power to the system for the first time all wiring connections should be checked for correctness Upon initial power up the unit will enter a start up mode for 2 minutes During start up analog output will be 0 mA 1 25 mA or 3 5 mA depending on whether the communications option is Modbus HART 1 25 mA or HART 3 5 mA respectively After power is applied the IR700 should be allowed to stabilize for appro
20. al error with the electronics 2 Gal VOLF local monitors representative for advice 1 Ensure nitrogen is available for zeroing F8 Bit 7 1 25 Failed to Zero 1 Unstable signal due to gas present or provide nitrogen to the IR700 during zeroing F9 Bit 8 1 25 CAL Check Period 1 Test gas still present after gas check 1 Remove the gas Exceeded completed 22 GENERAL MONITORS Model IR700 7 0 Modbus Interface The IR700 has a single Modbus compatible interface for connection to control room equipment such as programmable logic controllers PLCs A separate programming guide for the IR700 Modbus registers is available from the General Monitors website 23 2 GENERAL MONITORS Model 700 8 0 Customer Support UNITED STATES Corporate Office 26776 Simpatica Circle Lake Forest CA 92630 9776 Whithorn Drive Houston 77095 UNITED KINGDOM Heather Close Lyme Green Business Park Macclesfield Cheshire United Kingdom SK11 OLR IRELAND Ballybrit Business Park Galway Republic of Ireland SINGAPORE No 2 Kallang Pudding Rd 09 16 Mactech Building Singapore 349307 MIDDLE EAST LOB12 G20 P O Box 61209 Jebel Ali Dubai United Arab Emirates 24 Toll Free 1 800 446 4872 Phone Fax Email Phone Fax Email Phone Fax Email Phone Fax Email Phone Fax Email Phone Fax Email 1 949 581 4464 1 949 581 1151 info general
21. ations and may also lead to serious damage to the equipment Equipment damaged in this manner is not covered under warranty 3 2 2 1 European Union EU Approved Cable Armor and Screens Interconnecting cables must have an overall screen or screen and armor Cable BS5308 Part 2 Type 2 or equivalent is suitable Note that the terms screen and shield are equivalent for the purpose of this manual The cable armor must be terminated in a suitable cable gland at the detector to ensure a positive electrical connection 3 2 2 2 Cable Termination in Non Hazardous Areas e The cable armor must be connected to safety earth in the safe area e The cable screen drain wire must be connected to an instrument earth in the safe area The power supply OV return must be connected to an instrument earth in the safe area e he interconnecting cables should be segregated from power and other noisy cables Avoid proximity to cables associated with radio transmitters welders switch mode power supplies inverters battery chargers ignition systems generators switch gear arc lights and other high frequency or high power switching process equipment e In general maintain separation of at least 1 meter between instrument instrument cables and other cables Greater separations are required where long parallel cable runs are unavoidable Avoid running instrument cable trenches close to lightning conductor earthing pits e Complete all cable insulation t
22. e of the detector 18 GENERAL MONITORS Model IR700 5 0 Maintenance The Model IR700 is calibrated at the factory and is fail to safe once it is correctly installed and calibrated upon start up it requires little maintenance other than periodic cleaning gas checks zeroing and recalibration to ensure system integrity Integrity checks can be performed using General Monitors Gas Check Kit P N 31478 1 WARNING Disconnect or inhibit external devices such as Trip Amplifiers PLC s or DCS N systems before performing any maintenance NOTE If an optical fault still occurs after cleaning and re zeroing of an IR700 detector is complete contact the factory The system s full two year warranty will be voided if customer personnel or third parties damage the system during repair attempts or maintenance activities Gassing into the screened splashguard will not provide a stable or accurate reading 5 1 Developing a Maintenance Schedule Maintenance requirements will vary with each installation General Monitors recommends that a schedule for periodic maintenance be established and followed and that a maintenance logbook be kept for each unit in operation More frequent cleaning and calibration checks are recommended if the equipment is affected by unusual environmental conditions such as mud collecting on the sensor head sensors accidentally being painted over etc 5 2 Gas Checks Zeroing and Recalibration The Model IR700 is cal
23. esting before connecting the cable at either end 3 2 3 Applying Sealants to Conduit Entries Please keep the following warnings and cautions in mind when you install the IR700 and IR4000S CO units to make sure that the equipment maintains the appropriate seals for a Class hazardous location 2 GENERAL MONITORS Model IR700 gt WARNING Each conduit run from an IR700 junction box or display unit within a hazardous location and from a hazardous to a non hazardous location must be sealed so that gases vapors and or flames cannot pass beyond the seal The purpose of seals in a Class hazardous location is to prevent the passage of gases vapors or flames from one electrical installation to another through the conduit system For information on Class location seals see NEC Articles 501 5 500 3d WARNING Unused cable entry holes in each IR700 junction box and IR4000S CO must be sealed with approved explosion proof stopping plugs Red caps supplied by General Monitors are for dust protection only and must not be left on the unit when installed CAUTION Acetic acid will cause damage to metal components metal hardware ceramic ICs etc If damage results from the use of a sealant that contains acetic acid RTV silicone the warranty will be void CAUTION To prevent corrosion due to moisture or condensation it is recommended that the conduit connected to the display unit housing be sealed or contain a drain
24. ibrated at the factory and needs only occasional recalibration after initial installation and start up e For detailed instructions on initiating gas checks zeroing and calibration using the IR4000S CO menus see the user manual for the IR4000S e For instructions on zeroing and recalibrating a stand alone IR700 using the magnetic switch on an attached junction box see Section 4 2 1 e For information on the IR700 Modbus register Operating Mode commands for gas checks zeroing and calibration refer to the separate Modbus programming guide 19 9 GENERAL MONITORS Model IR700 5 3 Cleaning and Lubricating the IR700 and IR4000S CO Units 5 3 1 Cleaning the IR700 and IR4000S CO Units The 00 optical windows can be cleaned by removing the splashguard that covers them then gently wiping them with a soft clean cloth or cotton swab that has had a commercial window cleaning solution applied water or ethanol are examples of suitable solvents You can remove particulate matter from the IR700 detector accessories and IR4000S units using an appropriate halogen free solvent such as water or ethanol Accessories should be thoroughly dried with oil free compressed air if necessary before refitting them to the detector Figure 9 IR700 optical window locations NOTE Do not clean the windows while an IR700 unit is zeroing or in recalibration mode The unit must be re zeroed after cleaning 5 3 2 Lubricating IR700 and
25. in order to simplify installation and maintenance 26 GENERAL MONITORS Model IR700 9 3 Specifications 9 3 1 System Specifications Consult factory for other ranges 5 Full Scale FS lt 50 FS 10 FS gt 50 FS Warranty zero Readout Relay Display IR4000S display and relay alarms Modules MC600 TA502A Single Channel Zero Two Series Faults Monitored Re calibration or Zero Error Gas Check Timeout Optics Failure Blockage Low Supply Voltage Reference or Active Lamp Failure Heater Failure Negative drift Program Memory Checksum Error EPROM Data Non Volatile Memory Checksum Error EEPROM Short Circuit on CAL Wire Response Time T50 lt 4 seconds With standard splash guard in place T90 x 8 seconds and 100 full scale gas applied Approvals CSA CE Marking ATEX IECEx 9 3 2 Mechanical Specifications Length 8 87 inches 225 mm Diameter 2 9 in 74 mm Weight 3 Ibs 1 35 kg for aluminum 6 lbs 2 7 kg for stainless steel Mounting 3 4 NPT threads Enclosure Marine Aluminum or Stainless Steel Explosion proof IP66 TYPE 4X 2f GENERAL MONITORS Model 700 9 3 3 Electrical Specifications Input Power absolute min nominal absolute max max wattage max current ripple maximum allowed Analog Signal Range Load max resistance Current Level mA 0 1 25 1 57 2 4 20 21 7 20 V 24 V 36V 4 8 W 24 VDC 200 mA 24 VDC 1 V pk pk
26. ions To access the 4 20 mA signal connect the white lead from the IR700 to the signal in terminal of the input unit Refer to the manual of the display or other device being used for detailed instructions Connect the black lead from the IR700 to the device Common The Common connection serves both the analog signal and the power connections 3 3 3 Modbus Interface To access the Modbus Modbus RTU interface connect the blue lead from the IR700 to the Modbus terminal and the blue white lead to the Modbus terminal on the customer s Modbus capable device For a description of the data available from the IR700 and the programming interface refer to the separate IR700 Modbus Programming Guide 3 3 4 HART Interface A standard HART interface is available which provides a digital data channel at 1200 baud over the 4 20 mA current loop Refer to the IR700 HART Field Device Specification for additional information 3 3 5 Calibration Interface The IR700 also provides a brown CAL lead for calibration The brown lead from the IR700 must be connected to the powered side of a switch so that when the switch is activated the brown lead is grounded General Monitors supplies a junction box or monitor with an integral magnetic switch to ease the connection of the IR700 in the field Figure 6 11 GENERAL MONITORS Model IR700 3 4 Applying Power Before applying power to the system for the first time all wiring connections shou
27. ld be checked for correctness Upon initial power up or after a fault condition has been corrected the unit will enter a start up mode for 2 minutes before returning to normal operation Analog output will be 0 mA for a non HART configuration and 1 25 or 3 5 mA for a HART configuration After power is applied the IR700 should be allowed to stabilize for approximately 60 minutes while the unit attains the proper operating temperature After stabilization it is recommended that the IR700 be zeroed per the procedure in Section 4 1 step 1 only A gas check should then be performed to ensure that the unit is operating properly Use the General Monitors gas check kit P N 31478 1 to perform this check If the unit does not respond properly calibrate per the procedure in Section 4 1 2 steps 1 4 e When connecting the IR700 to a safety system the 24 VDC red wire should be the last wire connected and first wire disconnected when removing the unit to protect the system from shorting Figure 6 IR700 with Junction Box 12 GENERAL MONITORS Model IR700 General Monitors Control Junction Box Equipment IR400 Wires Terminals 1COM 2 FG 3 24 4 4 20mA 4 20mA IN CAL optional 5 MOD1 MOD optional 6 MOD1 MOD optional 7 CAL 8 MOD 2 9 MOD 2 10 BLACK General Monitors Zero Switch Figure 7 Wiring Diagram from IR700 to Control Equipment 13 GENERAL MONITORS Model IR700 4 0 Ope
28. monitors com 1 281 855 6000 1 281 855 3290 gmhou generalmonitors com 44 1625 619 583 44 1625 619 098 info generalmonitors co uk 353 91 751175 353 91 751317 info gmil ie 65 6 748 3488 65 6 748 191 1 genmon gmpacifica com sg 971 4 8143814 971 4 8857587 gmme generalmonitors ae Table 3 GM Locations GENERAL MONITORS Model IR700 9 0 Appendix 9 1 Warranty General Monitors warrants the Model IR700 to be free from defects in workmanship or material under normal use and service within two 2 years from the date of shipment General Monitors will repair or replace without charge any such defective equipment found to be defective during the warranty period Full determination of the nature of and responsibility for defective equipment will be made by General Monitors personnel Defective or damaged equipment must be shipped prepaid to General Monitors plant or representative from which shipment was made In all cases this warranty is limited to the cost of the equipment supplied by General Monitors The customer will assume all liability for the misuse of this equipment by its employees or other personnel NOTE The Model IR700 Infrared Point Detector is easy to install however you should read and understand this manual before attempting to install or operate the device It includes important safety information All warranties are contingent upon proper use in the application for which the product was in
29. once every half second while the unit is waiting for gas to be applied Waiting for Gas Apply Gas Apply 50 full scale gas using a Gas Check Kit with portable purge calibrator equipment e When the unit detects the gas the LED will flash on for a half second every one and one half seconds Gas Present e If the unit does not detect the gas the LED will flash off quickly once every half second while the unit is still waiting for gas to be applied No Gas Error e Once calibration has been completed the LED will turn and flash off once every second Calibration Complete Return to Normal Operation Remove the gas and the unit will return to normal operation once the gas has fallen below 20 of full scale 17 GENERAL MONITORS Model IR700 4 3 Gas Check Mode 1 Send Modbus or HART gas check command 2 When the unit enters gas check mode AO will be 3 5 mA for the HART 3 5mA configuration or 1 5 mA for other configurations Apply 50 full scale gas using a gas check kit with portable purge calibrator equipment 3 Once the detector is placed in gas check mode and the gas is applied monitor the ppm reading for the detector to see if it is functioning properly using the junction box or IR4000S display or Modbus or HART commands When the reading is stabilized it should be 50 full scale 4 Remove the gas The unit will return to normal operation when the concentration drops below 20 of full scale
30. ration and Configuration The methods used to operate and configure the IR700 will vary depending on whether you using the IR700 as part of an IR4000S CO monitoring system as a stand alone unit attached to a junction box and control room devices Separate instructions are provided in this chapter for each situation lf your 700 is part of 40005 CO system you can operate and configure both the IR700 and the IR4000S using the IR4000S menu options and LED display You can also send Modbus or HART commands to the IR4000S from connected control room devices to perform all the menu driven functions plus additional ones e If your 700 is a stand alone unit attached to a junction box you can use the magnetic switch attached to the junction box for zeroing and calibration You can also send Modbus or HART commands to the IR700 from control room devices to perform zero calibration gas checks and configuration tasks NOTE This chapter describes how to use the junction box magnetic switch for stand alone IR700 operation the IR4000S CO manual describes how to use the IR4000S CO menus for IR700 system operation and configuration 4 1 Zeroing Gas Check Tests and Calibration Each IR700 is calibrated at the factory However the detector will need occasional zeroing as well as gas check tests and calibration after initial installation to make sure it is working properly Before zeroing or calibration always check tha
31. revent damage to equipment WARNING TOXIC COMBUSTIBLE AND FLAMMABLE GASES AND VAPORS ARE VERY N DANGEROUS USE EXTREME CAUTION WHEN THESE HAZARDS ARE PRESENT 1 3 Installation Operation and Maintenance Before power up verify wiring terminal connections and stability of mounting for all integral safety equipment Proper system operation should be verified by performing a full functional test of all component devices of the safety system ensuring that the proper levels of alarming occur Fault detection should be verified Periodic testing calibrating should be performed per the manufacturer s recommendations and instructions When testing produces results outside of the manufacturer s specifications re calibration or repair replacement of the suspect device s should be performed as necessary Calibration intervals should be independently established through a documented procedure including a calibration log maintained by plant personnel or third party testing services GENERAL MONITORS Model IR700 2 0 Product Description General Description The Model IR700 infrared IR point detector is a microprocessor based carbon dioxide gas detector is calibrated at the factory and needs no routine field calibration It is also relatively maintenance free requiring only a periodic cleaning of the windows and re zeroing to ensure dependable performance The IR700 continuously monitors carbon dioxide and provides a 4 to 20 m
32. rom the IR700 units in order to locate it within easy reach and at eye level 3 2 1 Mounting an IR700 with an Attached Enclosure The following figure shows the overall and mounting dimensions for the Model IR700 with an attached junction box IR4000S CO enclosure 14 5 368 634 161 8 11 206 3 4 NPT ENTRY pa ll 60 152 43 110 285 724 5 05 128 4X SOCKET HEAD CAP SCREW 3 4 NPT ENTRY 3X 2X 30 THRU 3 21 81 1 82 46 0 47 12 04 10 Figure 5 IR700 Mounting Dimensions GENERAL MONITORS Model IR700 gt gt To Mount the IR700 The IR700 must rest horizontally to reduce the possibility of dirt and dust building up on the lens Where applicable for best step change response time orient the IR700 so that the gas will flow into the slots in the splash guard Mount the attached junction box or IR4000S CO enclosure using the two bolt holes NOTE There is also a duct mounting kit available from General Monitors with separate instructions 3 2 2 Cabling Safety Notices CAUTION The Model IR700 detector and Model IR4000S CO monitor system contain components that can be damaged by static electricity Special care must be taken when wiring the system to ensure that only the connection points are touched WARNING Under NO circumstances should equipment be connected or disconnected when under power This is contrary to hazardous area regul
33. ssible All subsequent correspondence with General Monitors must specify the equipment part number and the serial number Detector Location Considerations There are no standard rules for detector placement since the optimum detector location varies with the application The customer must evaluate conditions at the facility to make this determination If practical the Model IR700 infrared point detector should be easily accessible for occasional integrity checks The unit should be mounted horizontally so that dirt and dust do not build up on the windows Although the 00 is RFI resistant it should not be mounted close to radio transmitters or equipment that generates high magnetic or electrical fields Some other factors to consider when selecting a detector location e Emission temperature and vapor density of the gas The IR700 should be located near the floor since carbon dioxide is heavier than air e Locate the IR700 where prevailing air currents contain the maximum concentration of gas e Observe the temperature range of the IR700 and locate the unit away from concentrated sources of heat or light Mount the IR700 away from sources of excessive vibration AN WARNING Each IR700 is completely tested at the factory However a complete system checkout is required upon initial installation and start up to ensure system integrity 2 GENERAL MONITORS Model IR700 AN 3 1 Attaching the IR700 to a Junction Box IR40
34. t the optics path is clear and the windows are clean These are the most important operations to ensure that the IR700 is measuring accurately Depending on your system configuration you can use menus Modbus HART commands or magnetic switch selection to initiate zeroing gas checks and calibration as described later in this chapter Some general guidelines are provided here that are useful no matter what method is used 4 1 1 Gas Check Test Guidelines Running a gas check test enables you to verify whether the detector is functioning correctly by applying a known gas concentration and monitoring the ppm reading while keeping the alarm and warning relays disabled To conduct the test you can use the General Monitors gas check kit with portable purge calibrator equipment NOTE The FMD and IR4000S CO have a relay inhibit mode that will turn off the Warn and Alarm relay but the 00 current loop will still transmit the gas concentration level This could cause alarms on control room equipment 4 1 1 1 Portable Purge Calibrator Equipment The portable purge calibrator is a compact accurate and safe system The purge is filled with nitrogen The lecture bottle is filled with a standard 50 full scale mixture of gas air Using 14 GENERAL MONITORS Model IR700 known gas air mixtures reduces the likelihood of error in field calibration The hose and cup adapter that are included allow for quick calibrations and gas checks 4 1 2
35. tended and do not cover products which have been modified or repaired without General Monitors approval or which have been subjected to neglect accident improper installation or application or on which the original identification marks have been removed or altered Except for the express warranty stated above General Monitors disclaims all warranties with regard to the products sold including all implied warranties of merchantability and fitness and the express warranty stated herein are in lieu of all obligations or liabilities on the part of General Monitors for damages including but not limited to consequential damages arising out of or in connection with the use or performance of the product 25 GENERAL MONITORS Model IR700 9 2 Principle of Operation Most gases absorb infrared radiation in specific wavelengths or bands that are characteristic of the chemical structure of molecules in the gas The Model IR700 is based on measuring absorption of infrared radiation passing through a volume of gas Absorption of the radiation follows the Beer Lambert Law which states the transmittance T of radiation through an absorbing medium decreases exponentially by the product of the extinction coefficient the concentration C and the path length L T exp ACL The Model IR700 uses dual source single detector measurement method One source operates at a wavelength where absorption of a specific gas or gases occurs
36. tware or handheld device has the Device Description DD for the IR700 If the DD is not present download it from the HART Communication Foundation HCF website add web address Verify the IR700 wiring Verify that power is off when removing or attaching wires e Red to power e Black to common e White to a 250 ohm resistor and the other end of resistor to common Resistor tolerance should be 5 or less e Verify HART modem or 475 wiring Leads are across the 250 ohm resistor After verifying the IR700 wiring verify that power is on to the IR700 and to the HART modem or handheld device Verify the IR700 4 20 mA output When no gas and no faults are present a voltmeter across the 250 ohm resistor will read 1 0 volt DC 21 GENERAL MONITORS Model IR700 Table showing the fault conditions and corrective action required MODBUS RET FAULT FLAG DESCRIPTION POSSIBLE CAUSE CORRECTIVE ACTION ANALOG OUTPUT mA REGISTER 2 HART non HART 1 Fouling of the detector windows or FO Bits 3 amp 14 eine Tn 0S eH Toss 205 C onceniratian S beam path is excessive and requires 1 Clean detector beam path and windows then 1 25mA then OmA Excessively Negative 2200 Bits 0 amp 1 Gas Concentration is Detector windows or beam path are Clean detector beam path and windows Negative 2 to be obscurred Cal bottle empty and time out occurred 1 Obtained filled CAL bottle and re CAL 2 Man to remove gas at end
37. ximately 60 minutes while the unit attains the proper operating temperature After stabilization it is recommended that the IR700 be zeroed per the procedure in section 4 1 zero only gas check should then be performed to ensure that the unit is operating properly Use the General Monitors Gas Check Kit P N 31478 1 to perform this check General Monitors Control Junction Box Equipment IR700 Wires Terminals Shield 4 20mA IN g CAL optional MOD optional BLUE WHITE d MOD optional V BLACK r General Monitors Zero Switch Figure 2 Wiring Diagram from IR700 to Control Equipment The instrument is now ready to operate Please further consult this manual for more information on the instrument s many features GENERAL MONITORS Model IR700 1 0 Introduction 1 1 Protection for Life General Monitors mission is to benefit society by providing solutions through industry leading safety products services and systems that save lives and protect capital resources from the dangers of hazardous flames gases and vapors The safety products you have purchased should be handled carefully and installed calibrated and maintained in accordance with this instruction manual Remember these products are for your safety 1 2 Special Cautions and Warnings This instruction manual includes numerous cautions and warnings that are included to prevent injury to personnel and p
Download Pdf Manuals
Related Search