Emerson UVU-140A-AR User's Manual
Contents
1. usa kala E a atra 14 Fire Gonditioni 14 Current 8 Relay Output Conditions 14 Table 4 Current 8 Relay Output Conditions 14 CHAPTERS MAINTENANCE 15 uuu ardd eed ae A e ek 15 Troubleshooting 22 53 eee de a karta e Sus a aal kuway dog 15 Cleaning Viewing Window and Reflector 15 Repositioning vi Adjustment Allen Screw 15 Return ou pg abt bate ao eat Oeil aaa aka ae 16 Appendix Net Safety Monitoring Inc Electrostatic Sensitive Device Handling Procedure Appendix B Common Ultra Violet Absorbing Gases Appendix C Wire Resistance In Ohms CHAPTER 1 TECHNICAL INFORMATION Introduction The UVU 140 A amp UVU 140 AR fire detectors provide fast reliable flame detection in a wide vartety of applications The automatic visual integrity vi feature allows for a continuous check of optical surfaces sensitivity and electronic circuitry of the unitized fire detector Fire and fault identification are accomplished by2. 4 Whatis insthe package thaw 4 Mounting the Detector 214 umu usu Laada a 4 Cone of VISION Pee bate teen ee Bene a as 4 Figure 2 Detector of vision 2 4 arte m 4 Environmental 5 eu ee ele bee D a e 4 False Alarm usah xy atti waa ete Rag 5 Position and Density Detectors 5 Figure Detector with SwivelMount 6 Figure 4 Detector Dimensions nis nis nisi o 7 Figure 5 Swivel Mount Dimensions 7 Figure 6 JB4 UV T Junction Box Side VieW 7 Figure 7 JB4 UV T Junction Box Top View 7 General Wiring Requirements 8 Wiring Diagram for 140 nis is nsnsi sn s nis is nis nis ni o 9 Figure 8 Wiring for 0 140 9 Wiring Dia
3. the use of specific current output levels and relay contacts UVU 140 AR only The fire detectors are housed in explosion proof enclosures that are designed to meet most national and international standards They are available in anodized aluminum or optional stainless steel The UVU 140 A amp UVU 140 AR fire detectors are typically mounted with a swivel mounting assembly see Figure 3 The UVU 140 AR unitized fire detector connects to JBR T ASSY which consists of a junction box two relays and a terminal connector board The JBR T ASSY has large easy access spring tension terminals and a user selectable dip switch which allows the operator to select relay and coil status conditions see Table 3 Features gt Instantaneous response to ultraviolet radiation gt Automatic and manual visual integrity vi testing gt Adjustable sensitivity and time delay gt All automatic test functions are performed with the system on line gt Alarm and automatic fault identification indicated by a 4 to 20mA output gt Relay outputs for fire and fault identification UVU 140 AR only gt The fault relay is normally energized and non latching UVU 140 AR only Spectral Sensitivity Range The UVU 140 A amp UVU 140 AR fire detectors respond to radiation wavelengths of 185 to 260 nanometres 1850 to 2600 angstroms Figure 1 illustrates the range of sensitivity and compares this range to other forms of radiation Note that UV radiation reaching the eart
4. be lubricated with polyalphaolefin grease such as GRS 450 made by CPI Engineering Silicone based lubricants should never be used if catalytic type combustible gas sensors are being used in conjunction with the UV detectors since silicone lubricant on or near the combustible gas sensor will cause permanent damage to the sensing element Troubleshooting The automatic vi visual integrity feature continuously checks the detector for correct response If a problem is detected Table 4 shows the current output levels for various situations Cleaning Viewing Window and Reflector When cleaning the viewing window and reflector use a clean lint free cloth and the cleaning solution provided with the detector Use only recommended cleaning solutions as some cleaners can leave a residue that can block UV radiation Repositioning vi Adjustment Allen Screw The UV sensor module has an adjustable Allen Screw This adjustable Allen Screw controls the amount of light released from the vi source during visual integrity testing To increase the amount of UV light released turn the Allen Screw counter clockwise this will open the orifice and allow more light to pass through An ideal setting with a clean lens and reflector would yield an analog output of 12mA during the manual vi test which represents an excellent response level when performing a manual vi check 15 Device Repair Return The UVU 140 A and UVU 140 AR fire detectors are not desig
5. detector will stay in the manual vi test mode as long as the manual vi input is held at the system power voltage During the manual vi test all other detector functions are disabled It is therefore imperative that after this test is performed the manual vi test input be released Test Procedures 1 Connect the manual vi test input UVU 140 4 terminal to system power by either a direct connection ora manual push button NOTE On UVU 140 AR detectors connect the MVI signal output terminal on the JBR T relay box to system power by either a direct connection or a manual push button CAUTION DO NOT connect system power to the blue wire on the UVU 140 AR detector Doing so will damage the fire detector 2 Hold the manual vi input at this voltage for at least two seconds 3 Two seconds after the test has commenced the detector will have a current output that corresponds to the quality of the vi reading obtained see Table 4 4 Release the manual vi test input The detector will immediately return to normal operation if a vi fault is not present 5 Ifa vi fault is present the current output will indicate 2mA Manual Check Procedure The whole system should be checked periodically with a UV test lamp to make sure that the detectors are not obstructed that the area seen by the detector has not changed and that there is no fault in the vi circuit CAUTION Secure all output loads connected to the fire detector to prevent u
6. output devices to prevent unwanted activation of equipment and remember to place the same devices back into service when the check out is complete Automatic vi Test NOTE The automatic vi system continuously monitors the operation of the detector However it is important that the system be manually checked using the MANUAL check procedure described on page 12 ona regular basis The whole system including external eguipment should be checked periodically using a UV test lamp to simulate a fire The detector performs an automatic vi test every 30 seconds If the automatic vi test fails the UVU 140 A or UVU 140 AR current output will decrease to 2mA indicating a dirty window or other obstruction in front of the detector tube The UVU 140 A or UVU 140 AR current output will remain at 2mA until the problem is corrected If the obstruction was only temporary the detector will return to normal operation with a current output of 4mA the next time the automatic vi test is successful 12 Manual vi Test Procedure The detector has a manual vi input The manual vi test is performed connecting this input to the system power for the duration of the test This can be done by connecting a momentary contact pushbutton between system power and the manual vi input and then holding the pushbutton to perform the test NOTE The manual vi feature is optional on the UVU 140 A If not used leave unconnected or tied to system common CAUTION The
7. 24Vdc system common 24 Vdc input power NOTE JBR T ASSY Junction Box with relays connector board See 3 Shield to Ground If the White 10 5 32Vdc Black System Common Red Signal Output Blue Manual Optional Green Ground FIRE RELAY STATUS TABLE NORMALLY ENERGIZED UVU 140 AR NORMALLY DE ENERGIZED CONDITION NO Contact No Fire NC NO Contact Contact NC Contact it to Fire O OPEN C CLOSED for UVU 140 AR iring Figure 9 W 10 Detector Settings System Sensitivity The UV tube count rate generated by different fires at the same distance is unpredictable Generally if a fire doubles in size the tube response is increased by about 60 percent The UVU 140 A amp UVU 140 AR detectors have selectable sensitivity settings which allow for various applications regardless of the severity of the hazard and the action required if a fire occurs The system can be adjusted to various sensitivity levels by setting the detectors to respond at a pre determined detector count rate The count rate is dependent upon the intensity of the ultraviolet radiation reaching the detector which in turn depends on the type of fuel temperature flame size distance from the detector and concentration of UV absorbing vapours present Setting the UVU 140 A UVU 140 AR detecto
8. Density of Detectors The UVU 140 A amp UVU 140 AR fire detectors have a nominal 120 degree cone of vision when measured in accordance to NFPA 72 guidelines In an application such as a loading dock with a ceiling height of 25 feet 7 5 metres where it is desired to have complete detector coverage at floor level and a detector is mounted 2 feet 0 6 metres from the ceiling and pointed straight down the distance from the detector to the designated level would be 23 feet 7 metres The detector has a 120 degree cone of vision and would cover a circular area 80 feet 24 metres in diameter at floor level A sketch of the area to be covered will indicate the number of detectors required to monitor the area Detectors should be placed as close as practical to the expected fire hazard NOTE Do not mount UV detectors close to the ceiling of enclosed buildings if smoke might accumulate before the break out of flame It is preferable to mount the detectors on walls a few feet about 1 metre below the ceiling where they may respond before being obscured by smoke Consider shortening time delay settings when smoke is expected to accumulate during a fire If dense smoke is likely to accumulate prior to flame as in an electrical fire supplement UV detectors with other protection The detector should be mounted in a low vibration area be easy to access for cleaning purposes and should not have glass or plexiglass windows between the device and the potentia
9. NET D SAFETY MONITORING I N C UVU 140A AND UVU 140 AR UNITIZED ULTRAVIOLET FIRE DETECTOR USER MANUAL ISO 9001 2000 OMI REGISTERED Part Number MAN 0002 00 Rev 1 Copyright 2001 Net Safety Monitoring INC Printed in Canada This manual is provided for Informational purposes only Although the information contained in this manual is believed to be accurate it could include technical inaccuracies typographical errors Changes are therefore periodically made to the information within this document and incorporated without notice into subseguent revisions of the manual Net Safety Monitoring INC assumes no responsibility for any errors that may be contained within this manual This manual is a guide for the use of a Unitized UV Fire Detector and the data and procedures contained within this document have been verified and are believed to be adeguate for the intended use of the detector Ifthe detector or procedures are used for purposes other than as described in the manual without receiving prior confirmation of validity or suitability Net Safety Monitoring Inc does not guarantee the results and assumes no obligation or liability No part of this manual may be copied disseminated or distributed without the express written consent of Net Safety Monitoring Inc Net Safety Monitoring Inc products are carefully designed and manufactured from high guality components and can be expected to provide many years of
10. an object causes a discharge of electrostatic energy that has built up on the skin If the charge is of sufficient magnitude a spark will also be visible This voltage is often more than enough to damage some electronic components Some devices can be damaged without any physical contact Exposure to an electric field can cause damage if the electric field exceeds the dielectric breakdown voltage of the capacitive elements within the device In some cases permanent damage is instantaneous and an immediate malfunction is realized Often however the symptoms are not immediately observed Performance may be marginal or even seemingly normal for an indefinite period of time followed by a sudden and mysterious failure Damage caused electrostatic discharge can be virtually eliminated if the equipment is handled only in a static safeguarded work area and if it is transported in a package or container that will render the necessary protection against static electricity Net Safety Monitoring Inc modules that might be damaged by static electricity are carefully wrapped in a static protective material before being packaged Foam packaging blocks are also treated with anti static agent If it should ever become necessary to return the module it is highly recommended that it be carefully packaged the original carton and static protective wrapping Since a static safeguarded work area is usually impractical in most field installations caution sh
11. arious distances Range The practical application distance is up to about 80 feet 25 metres The distance 15 directly related to the intensity of the ultraviolet radiation source Programming the UVU 140 A amp UVU 140 AR fire detectors to require a high count rate results in low system sensitivity Environmental Factors Airborne contamination such as steam oil mist ice build up and smoke can impair the detection capabilities of UV fire detectors and should be avoided Since the UVU 140 A amp UVU 140 AR fire detectors are designed to detect fires by responding to the ultra violet UV radiation they emit it is very important to be aware of UV absorbing gases that may be present 4 between detector and sources of potential fires Small concentrations of these types of gases may not absorb enough UV radiation to cause a problem but when higher concentrations of these gases are present the detectors may become blind as not enough ultra violet radiation can reach them to activate an alarm Moving detectors closer to the probable source of fire and increasing the sensitivity of the detector can help to overcome this problem in some cases For a list of some common U V absorbing chemical vapours see Appendix B False Alarms Arc Welding long duration lightning flashes cracked mercury lamps cracked halogen lamps and X rays may cause false alarms and should be avoided NOTE Ultraviolet detectors are sensitive to arc weld
12. chlorobenzene P Dichlorobenzene 18 Methyl Methacrylate Alpha Methylstyrene Naphthalene Nitroethane Nitrobenzene Nitromethane 1 Nitropropane 2 Nitropropane 2 Pentanone Phenol Phenyl Clycide Ether Pyridine Hydrogen Sulfide Styrene Tetrachloroethylene Toluene Trichloroethylene Vinyl Toluene Xylene Appendix Wire Resistance In Ohms Q 9 N NI lt x gt gt 9 N _ N S N a m N n N N N 10000 102 00 000 102 00 63 90 ss 4020 40 20 25 30 2530 1599 15 90 9 99 6 28 NOTE RESISTANCE SHOWN IS ONE WAY THIS FIGURE SHOULD DOUBLED WHEN DETERMINING CLOSED LOOP RESISTANCE 19 NETODSAEETY MONITORING INC 2721 Hopewell Place N E Calgary Alberta Canada T1Y 7J7 Telephone 403 219 0688 Fax 403 219 0694 www net safety com E mail netsafe net safety com
13. gram for UVU 140 AR 10 Figure 9 Wiring for UVU 140 AR 10 D tectorSettilfgeSrt u ras yu uuu s AAU uu ARE 11 SYSIEMESENSILIVIEY eld L ays l ku 11 Figure 10 DIP switch operation location 11 Table 1 Detector Sensitivity Settings nis nis nis isis 11 SystenmioTime Delay 2 uu 1 via s ak ha a ua k 11 Table 2 Alarm Response Delay Settings 11 Table 3 Goll andiRelay Stlaf uS va nan iy au unu Be nar 12 CHAPTER 3 START UP AND TEST 12 Slartiup Procedures yin untu dd ua bee a es 12 Check Out iPr6Oc edure t u uyu ee ISA 12 A toma tlevh kest teach au a da de 12 Test Procedure kasuy waka urad yuka Sete Bat a 13 Manual Check Procedure inedi aed Bee kiq a e 13 CHAPTER 4 NORMAL OPERATION 14 Normal Operation
14. h from the sun does not extend into the sensitivity range of the detector Nor does radiation from normal artificial lighting such as fluorescent mercury vapour and incandescent lamps 100 SPECTRAL RESPONSE OF DETECTOR SUNLIGHT RELATIVE SENSITIVITY OF DETECTOR RELATIVE SENSITIVITY OF LIGHT SOURCE r AME 4 100 200 300 400 500 600 700 800 900 1000 WAVELENGTH ULTRVIOLET RANGE VISIBLE RANGE INFRARED RANGE Figure 1 Various Spectral Distributions Specifications gt Operating Voltage Range 24Vdc nominal 10 5 to 32Vdc If a fuse is rated in line with the main power supply it should be slow blow type Ifa power supply with current limiting is used it should have a rating appropriate for the inrush current required by the product gt Power Consumption UVU 140 A 1 92 Watts nominal 2 4 Watts maximum 24Vdc 80mA nominal 100mA maximum 24Vdc Inrush Current 250 mA for 2 5 ms gt Power Consumption UVU 140 AR 2 4 Watts nominal fault relay energized 24Vdc 2 9 Watts maximum fire amp fault relays energized 24Vdc 100mA nominal 24Vdc 120mA maximum 24Vdc Inrush Current 380 mA for 2 5 ms gt Temperature Range Operating 40 C to 85 40 F to 185 F Storage 55 C to 125 C 67 F to 257 F gt Dimensions Refer to Figures 4 5 6 and 7 gt Detector Enclosure Materials NEMA 4X anodized copper free al
15. ing and if this type of radiation can be expected nuisance alarms must be controlled through proper application including careful positioning and shielding of the detectors Some applications may reguire a UV IR system CAUTION Caution must be exercised if the detection system is turned off as the hazardous area will not be protected Lightning strikes can trigger the detector but this can be solved by pointing the sensor cone of vision below the horizon and setting the time delay to 7 seconds Cracked mercury halogen lamps in the vicinity of the fire detector should be replaced as soon as they are discovered UV radiation other than that produced by an actual fire is referred to as background UV An example of a high level of background UV could be a flare stack situated outside of a building The UV radiation produced by this flare may be detected when a door to the building is opened Windows or other reflective surfaces may also cause unusually high levels of UV radiation to enter the building from the flare In a situation like this the fire detection system response must be carefully checked and the sensitivity level adjusted high enough so that this background UV will not cause false alarms UV fire detectors respond to radiation other than ultraviolet X rays can activate the detector and are often used in industrial inspection It may be necessary to disable the system when X ray is conducted nearby Position and
16. l fire Locate detectors to ensure an unobstructed view of the area to be monitored To minimize dirt accumulation around the vi surfaces mount the detectors so that the internal vi source tube is on top The silver external reflector should be placed directly over the vi source tube Refer to Figures 4 and 5 for the detector and swivel mount dimensions Refer to Figure 3 for a diagram of the assembled detector and swivel mount assembly Figure 3 Detector with Swivel Mount Figure 4 Detector Dimensions 3 4 pE 4 0 3 4 NPT k Figure 6 JB4 UV T Junction Box Side View 550 4 14 holes in base for mounting mI 2 50 a Figure 5 Swivel Mount Dimensions A 3 4 NPT Figure 7 JB4 UV T Junction Box Top View General Wiring Requirements NOTE The wiring procedures in this manual are intended to ensure proper functioning of the device under normal conditions However due to the many variations in wiring codes and regulations total compliance to these ordinances cannot be guaranteed Be certain that all wiring complies with applicable regulations that relate to the installation of electrical equipment a hazardous area If in doubt consult a qualified official before wiring the system Shielded cable is highly recommended for power input and signal wires to protect against interference caused by extraneous electrical noise Recommended detector cable is fo
17. ned to be repaired by the customer in the field If a problem should develop first carefully check for proper wiring and programming If it is determined that the problem is caused by an electrical malfunction the unit must be returned to the factory for repair Net Safety Monitoring Inc encourages its distributors to make advance replacement units available to the user during the warranty period This allows Net Safety Monitoring Inc to take time to repair the unit completely while users keep their operations running with the advance replacement unit Prior to returning items contact the nearest distribution office so that an RMI Return Material Identification number can be assigned written statement describing the malfunction must accompany the returned item to simplify finding the cause of the failure and reduce the time and cost of the repair Pack the item to protect it from damage and use an anti static bag or aluminum backed cardboard as protection from electrostatic discharge 16 Appendix Net Safety Monitoring Inc Electrostatic Sensitive Device Handling Procedure With the trend toward increasingly widespread use of microprocessors and a wide variety of other electrostatic sensitive semiconductor devices the need for careful handling of equipment containing these devices deserves more attention than it has received in the past Electrostatic damage can occur in several ways The most familiar is by physical contact Touching
18. nt all optical surfaces are clean 16mA Instant alarm 20mA Fire condition detected Fire relay activated on UVU 140 AR 14 CHAPTER 5 Routine Maintenance The UVU 140 A amp UVU 140 AR fire detectors require periodic calibration To maintain maximum sensitivity the viewing window and reflector should be cleaned on a routine basis depending on the type and amount of contaminants in the area The rubber o ring on the detector housing is used to ensure the detector is watertight The housing should be opened periodically and the o ring inspected for breaks cracks or dryness To test the o ring remove it from the detector housing and stretch it slightly If cracks are visible the o ring should be replaced If it feels dry to the touch a thin coating of lubricant should be applied When re installing the o ring be sure that it is properly seated in the groove on the housing The o ring must be properly installed and in good condition to prevent water from entering the detector and causing failure The life expectancy of rubber o rings varies depending on the type and amount of contaminants present in the area The person who maintains the system must rely on experience and common sense to determine how frequently the rings should be inspected A coating of lubricant should also be applied to the enclosure threads before reassembling the detector to help prevent moisture from entering CAUTION The o ring should
19. nwanted activation 1 Direct the UV test lamp into the detector viewing window 13 The UVU 140 A or UVU 140 AR current output will change with amount of ultraviolet light being detected see Table 4 2 Turn off the UV test lamp 3 Repeat steps 1 amp 2 for all detectors in the system 4 After all detectors have been checked return the system to the normal operating mode 5 Restore power to output loads remove any mechanical blocking devices CHAPTER 4 NORMAL OPERATION Normal Operation In normal operation the detector outputs 4mA Fire Condition In a fire condition the detector outputs 20mA Current amp Relay Output Conditions The 4 20mA DC current output transmits system information to other devices The current output can only be wired for non isolated operation The current output can have a maximum external loop resistance of 600 Ohms at 10 5 to 32 Table 4 shows the current output levels for various conditions Table 4 Current amp Relay Output Conditions Current Output Situation OmA Shorted signal output or loss of power ImA Internal power fault or system power out of range Fault relay activated on UVU 140 AR 2mA Automatic or manual vi test failure Fault relay activated on UVU 140 AR 4mA Normal operation 6mA Background UV source 10mA Manual vi test adequate clean all optical surfaces Manual vi test good optical surfaces are moderately clean 12mA Manual vi test excelle
20. on 15 required gt protection of large capital investments Petroleum Products Handling gt petroleum loading terminals gt offshore platforms gt pipeline stations gt tank farms gt gt engine rooms Gaseous Fuel Handling gt butane and propane loading and storage gt pipeline compressor stations gt gas gathering facilities gt LNG loading transfer and storage gt hydrogen gt gas turbines Other Processes gt paint spray booths gt chemical and petrochemical production gt powder coating booths Automated fire protection systems also have applications in any manufacturing or research facility where the potential of fire may be low to moderate but the losses due to a fire would be high Figure 2 Detector cone of vision CHAPTER 2 INSTALLATION What s in the package Remove all the components from the packing box s carefully check components against the packing list Inspect all components for obvious damage and broken loose parts Notify the carrier and distributor immediately if damage 15 found or parts are missing Mounting the Detector There are many factors that you should be aware of when positioning your fire detector s Cone of vision The UVU 140 A amp UVU 140 AR fire detectors have a nominal 120 degree cone of vision when measured in accordance to NFPA 72 guidelines Figure 2 shows the cone of vision and detector response to a UV source at v
21. ould be exercised to handle the module by its metal shields taking care not to touch electronic components or terminals In general always exercise all of the accepted and proven precautions that are normally observed when handling electrostatic sensitive devices A warning label is placed on the packaging identifying those units that use electrostatic sensitive semiconductor devices Published in Accordance with E1A standard 471 17 Appendix B Ultra Violet Absorbing Gases Since the UVU 140 A amp UVU 140 AR fire detectors are designed to detect fires by responding to the ultra violet UV radiation they emit it is very important to be aware of UV absorbing gases that may be present between the detector and the sources of potential fires Small concentrations of these types of gases may not absorb enough UV radiation to cause a problem but when higher concentrations of these gases are present the detectors may become blind as not enough ultra violet radiation can reach them to activate an alarm Moving detectors closer to the probable source of fire and increasing the sensitivity of the detector can help to overcome this problem in some cases Following is a list of common UV absorbing gases Acetaldehyde Acetone Acrylonitrile Ethyl Acrylate Methyl Acrylate Ethanol Ammonia Aniline Benzene 1 3 Butadiene 2 Butanone Butylamine Chlorobenzene 1 Chloro 1 Nitropropane Chloroprene Cumene Cyclopentadiene O Di
22. rs to respond to a low count rate results in high system sensitivity Adjustments are made by setting the DIP switch on the bottom of the internal module The factory settings are 5 second time delay at 24 counts per second cps the fire relay is de energized and latching Table 1 Detector Sensitivity Settings SYSTEM SENSITIVITY SETTINGS ON Switch 1 Switch 2 8 Counts cps ON ON OFF 16 Counts ON OFF 24 Counts cps ON DIP Switch Located Ep apayan SSE on Bottom of Module 32 Counts cps OFF OFF Figure 10 DIP switch operation System Time Delay and location Time delay can be set via dip switches located on the bottom of the electronics module See Figure 7 Table 2 Alarm Response Delay Settings SYSTEM TIME DELAY SETTINGS sis eapi 3 Seconds Coil and Relay Settings The DIP switch is located in the JBR T assembly 11 Table 3 and Relay Status COIL AND RELAY SETTINGS TABLE Switch 1 Switch 2 De energized and ON ON non latching Energized and non ON OFF latching De energized and OFF ON latching Energized and OFF OFF latching CHAPTER 3 START UP AND TEST Start up Procedure NOTE Be sure that the detector is correctly aimed at the potential hazard and that no obstructions interfere with its line of vision UV absorbing gases should not exist between the detector and the potential hazard Check Out Procedure CAUTION When testing the system be sure to secure all
23. trouble free service Each product is thoroughly tested inspected and calibrated prior to shipment Failures can occur which are beyond the control of the manufacturer Failures can be minimized by adhering to the operating and maintenance instructions herein Where the absolute greatest of reliability is required redundancy should be designed into the system Net Safety Monitoring Inc warrants its sensors and detectors against defective parts and workmanship for a period of 24 months from date of purchase and other electronic assemblies for 36 months from date of purchase No other warranties or liability expressed or implied will be honoured by Net Safety Monitoring INC Contact Net Safety Monitoring Inc or an authorized distributor for details TABLE of CONTENTS CHAPTER 1 TECHNICAL INFORMATION 1 Introductions depa date Cpu due be eet a hele a au ates 1 Features k asas ae Pee Na he ote d ph 1 Spectral Sensitivity Range S n 1 Figure 1 Various Spectral Distributions 1 Sau 2 Applications ae ict eh Aaa SUS sQ a R a tt u k u m 3 CHAPTER 2 INSTALLATION eo Pee
24. uminum or stainless steel optional gt Shipping Weight approximate 2 Ibs 0 9 kilograms aluminum gt Certification CSA NRTL C NEMA 4X certified for hazardous locations Class 1 Division 1 Groups B C and D IEC approval Ex 4 2 5 Class 1 Zone 1 Groups 2 5 gt Spectral Sensitivity Range The detectors respond to UV radiation over the range of 185 to 260 nanometres 1850 to 2600 angstroms gt Cone of Vision 120 degree cone of vision when measured in accordance with NFPA 72 guidelines gt Current Outputs 4 20mA DC into a maximum external loop resistance of 600 Ohms at 10 5 to 32Vdc gt Relay Contacts Available on UVU 140 AR only lA 30Vdc 05 125Vac gt Response Time Response to a saturating high intensity UV source is typically 10 milliseconds Alarm response time is programmable gt Time Delay Settings DIP switch selectable 3 4 5 or 7 seconds gt Sensitivity Settings DIP switch selectable 8 16 24 or 32 counts per second gt Humidity Range 0 to 100 relative humidity Applications The UVU 140 A amp UVU 140 AR fire detectors respond instantly to ultraviolet radiation emitted by a flame These devices are designed for use in hazardous locations and are suitable for use in outdoor applications Typical applications for UV detection systems gt around highly combustible materials gt when instantaneous response to flame is needed or where automated fire protecti
25. ur conductor shielded 18 AWG rated 300V If the wiring cable is installed in conduit the conduit must not be used for wiring to other electrical equipment Detectors can be located up to 2000 feet 600 metres from the controller if 16 AWG shielded conductor is used The UVU 140 A amp UVU 140 AR are factory sealed complete with four feet of four conductor 18 AWG cable rated 300V No seal is required Wiring Diagram for UVU 140 A EXTERNAL CONNECTIONS VI TEST OPTIONAL manual VI driver if not used leave disconnected 4 20 signal output 24Vdc signal output 24Vdc input power Equipment Ground Junction Box with Connector Board r Shield to Earth Ground UVU 140 Power Supply W 10 5 32Vdc BLK System Common Momentary Contact R Signal Output for Manual VI test OPTIONAL B Manual VI Optional Green Ground N 140 for UVU 140 A iring Figure 8 W Wiring Diagram for UVU 140 AR Shield cut at JBR T ASSY LEI GREEN Fire Fault RST z RI 2 BLUE Q Z R RED SIG o E OFF s w WHITE 4 20 7 Power Supply monitoring devices RST remote reset OPTIONAL MVI manual VI driver OPTIONAL S 4 20mA SIGNAL OUTPUT 2
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