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Model FP-700

FP-700 Instruction Manual

Rev. 5.1

Page 5 of 46

2.

Installation

2.1

Operational Guidelines for Safe Use – HazLoc Certifications

1.

It is recommended for end-users to read and reference the procedures described in IEC 60079-29-2 for
guidance on the proper installation, operation, and servicing of this type of combustible gas detectors.

2.

Install sensor only in areas with classifications matching with those described on the ATEX approval
label. Follow all warnings listed on the label.

3.

Detector is performance tested to ANSI/UL 12.13.01:2013 Performance Requirements of Detectors for
Flammable Gases. Performance Testing was completed by CSA Group on March 28, 2018. This Model
FP-700 detector is performance tested only for methane gas measurement in the 0-100 % LEL (0-5%
by volume) range and with use of Accessory PN 613-120000-700 Sensor Splashguard with integral Cal
Port. There are no special conditions for use other than what is specified here in Section 2.1 of
Instruction Manual.

Figure 8

HazLoc Certification Approval Label

4.

Ensure that the sensor is properly threaded into a suitable flameproof rated junction box with a
downward pointing female ¾” NPT threaded connection. The sensor should be threaded up at least 5
full turns until tight, with the LED display facing forward (+/-15°). Minimize use of Teflon Tape, or
any type of non-conductive pipe thread coating on the NPT threaded connection.

5.

A good ground connection should be verified between the sensor’s metal enclosure and the junction
box. If a good ground connection is not made, the sensor can be grounded to the junction box using the
sensor’s external ground lug. Also verify a good ground connection between the junction box and earth
ground. Installer shall use ring terminal to make connection to earth ground to be secured by screw and
lock washer on sensor housing.

6.

Ensure that the Housing Bottom and plug-in sensor are installed during operation.  The Housing Bottom
should be threaded tightly to the Intelligent Transmitter Module. The locking setscrew (M3 x 0.6 6g6h
Stainless Steel Allen set screw cup point with yield strength of greater than 40,000 PSI, typical 80,000
PSI) should then be tightened down to keep the Housing Bottom from being inadvertently removed or
from becoming loose under vibration.  The locking setscrew ensures that  Housing Bottom is only
removable by authorized personnel with the use of special tools.  A M1.5 Allen Wrench is required. If
screw requires replacement, only an identical screw may be used.

7.

Removal of the Housing Bottom violates the Ex d protection method and hence power must be removed
from the sensor prior to its safe removal.

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Содержание FP-700

Страница 1: ...Detcon Model FP 700 FP 700 Combustible Gas Sensor 0 100 LEL 0 50 LEL DETCON Inc 4055 Technology Forest Blvd The Woodlands Texas 77381 Ph 281 367 4100 Fax 281 298 2868 www detcon com June 05 2018 Document 3168 Revision 5 1 ...

Страница 2: ...Model FP 700 Model FP 700 ii This page left intentionally blank ...

Страница 3: ...1 Navigating Program Mode 21 3 5 2 View Sensor Status 21 3 5 3 Set AutoSpan Level 22 3 5 4 Set Gas Factor 23 3 5 5 Set Cal Factor 24 3 5 6 Set Serial ID 25 3 5 7 Set Bridge Voltage 25 3 5 8 Signal Output Check 26 3 5 9 Restore Factory Defaults 26 3 6 Program Features 27 3 6 1 Operational Features 27 3 6 2 Fault Diagnostic Failsafe Features 28 4 RS 485 Modbus Protocol 30 Content Description 30 5 Se...

Страница 4: ...sions Aluminum Junction Box 9 Figure 12 Outline and Mounting Dimensions Mini Stainless Steel Junction Box 10 Figure 13 Typical Installation 11 Figure 14 Sensor Wire Connections 13 Figure 15 Magnetic Programming Tool 15 Figure 16 Magnetic Programming Switches 15 Figure 17 FP 700 Software Flowchart 17 Figure 18 Sensor Assembly 32 Figure 19 Plug in Sensor Bottom View 35 List of Tables Table 1 Wire Ga...

Страница 5: ...s treated so that oxidation of the gas does not occur The technique is referred to as non selective and may be used to monitor most any combustible gas Detcon catalytic bead sensors are specifically designed to be resistant to poisons such as sulfides chlorides and silicones The sensors are characteristically stable and capable of providing reliable performance for periods exceeding 5 years in mos...

Страница 6: ...odule The Intelligent Transmitter Module ITM is a fully encapsulated microprocessor based package that accepts a plug in field replaceable combustible gas sensor Circuit functions include extensive I O circuit protection sensor pre amplifier bridge voltage temperature control on board power supplies microprocessor LED display magnetic programming switches linear 4 20mA DC output and Modbus RS 485 ...

Страница 7: ... Figure 6 for Assembly Break away 1 FP 700 Intelligent Transmitter Module ITM 2 Field Replaceable Plug in Combustible Gas Sensor 3 Model 700 Housing Bottom Assembly contains the Housing Bottom Flame Arrestor Retaining Ring and rubber O Rings 4 Splash Guard NOTE All metal components are constructed from electro polished 316 Stainless Steel in order to maximize corrosion resistance in harsh environm...

Страница 8: ...g in Replaceable Sensor The Detcon combustible gas sensor is a poison resistant and field proven design It is packaged as true plug in replaceable type sensor with over sized gold plated connections that eliminate corrosion problems It can be accessed and replaced in the field very easily by releasing the locking screw and unthreading the housing bottom The Detcon combustible gas sensor has an inf...

Страница 9: ...t least 5 full turns until tight with the LED display facing forward 15 Minimize use of Teflon Tape or any type of non conductive pipe thread coating on the NPT threaded connection 5 A good ground connection should be verified between the sensor s metal enclosure and the junction box If a good ground connection is not made the sensor can be grounded to the junction box using the sensor s external ...

Страница 10: ...ground gas Density Placement of sensors relative to the density of the target gas is such that sensors for the detection of heavier than air gases should be located within 4 feet of grade as these heavy gases will tend to settle in low lying areas For gases lighter than air sensor placement should be 4 8 feet above grade in open areas or in pitched areas of enclosed spaces NOTE Methane and Hydroge...

Страница 11: ...n locations where temperatures will exceed the operating temperature limits of the sensor Where direct sunlight leads to exceeding the high temperature operating limit use a sunshade to help reduce temperature 2 3 Sensor Contaminants and Interference Detcon combustible gas sensors may be adversely affected by exposure to certain airborne substances Loss of sensitivity or corrosion may be gradual i...

Страница 12: ...le as sensor accessories See Figures 9 10 11 and 12 below but any appropriately rated enclosure with a downward facing NPT female connection will suffice When mounting on a wall it is recommended to use a 0 25 0 5 spacer underneath the mounting ears of the Detcon standard J Box to offset the sensor assembly from the wall and create open access around the sensor assembly Spacing requirements for ot...

Страница 13: ...8 32 Thread Ground Point detcon inc LEL Sensor MODEL FP 700 Figure 10 Outline and Mounting Dimensions Stainless Steel Junction Box 4 3 4 NPT Explosion Proof Enclosure Junction Box Sensor Assembly Splash Guard Detcon s Aluminum Junction Box shown 2 125 5 5 13 Typ Mounting Bolt Use Spacers to move the J Box and Sensor Assembly away from the wall at least 0 25 0 5 to allow access to Sensor Wall or ot...

Страница 14: ...llation NOTE If a conduit run exits the secondary port repeat the installation technique shown in Figure 13 In Figure 13 the drain allows H2O condensation inside the conduit run to safely drain away from the sensor assembly The electrical seal fitting is required to meet the National Electrical Code per NEC Article 500 3d or Canadian Electrical Code Handbook Part 1 Section 18 154 Requirements for ...

Страница 15: ...sion Proof Enclosure to ground unit properly Mount to bottom of enclosure using 6 32 screws 6 Pin Pheonix Plug P N 306 175705 100 detcon inc LEL Sensor MODEL FP 700 Figure 13 Typical Installation NOTE Any unused ports should be blocked with suitable male NPT plugs Detcon supplies one NPT male plug with their accessory J box enclosures If connections are other than NPT use an appropriate male plug ...

Страница 16: ...e is based on stranded tinned copper wire and is designed to serve as a reference only NOTE 2 Shielded cable is required for installations where cable trays or conduit runs include high voltage lines or other possible sources of induced interference Separate conduit runs are highly recommended in these cases NOTE 3 The supply of power should be from an isolated source with over current protection ...

Страница 17: ...inal on the Transient Protection Module NOTE If the 4 20mA output is not being used the Green wire from the sensor must be connected to the Black wire at the terminal on the Transient Protection Module to ensure proper sensor operation a If applicable terminate the RS 485 serial wiring as shown in Figure 14 Use the second plug Out as termination point on the customer side to facilitate a continuou...

Страница 18: ...520124 025 Span Gas 25 LEL methane balance Air at fixed flow rate of 200 500cc min use with 0 50 LEL range NOTE Do not use calibration gases in Nitrogen background gas mixtures This will cause significant reading inaccuracies a Attach the calibration adapter to the threaded sensor housing Apply the test gas at a controlled flow rate of 200 500cc min 200cc min is the recommended flow Allow 1 2 minu...

Страница 19: ...on For 3 second hold the programming magnet is held in place over the switch location for three seconds For 10 second hold the programming magnet is held in place over the switch location for 10 seconds The 3 and 10 second holds are generally used to enter calibration program menus and save new data The momentary contact is generally used to move between menu items and to modify set point values A...

Страница 20: ... Refer to the complete Software Flow Chart Normal Operation Current Reading and Fault Status Calibration Mode AutoZero AutoSpan Program Mode View Sensor Status Sensor Model Type Current Software Version Range of Detection Serial ID address AutoSpan Level Days From Last AutoSpan Remaining Sensor Life Sensor Bridge Current Sensor Bridge Voltage Gas Factor Cal Factor 4 20mA Output Input Voltage Suppl...

Страница 21: ...ion X2 LEGEND inc PGM2 S PGM1 2 3 PGM1 S XX dec PGM1 2 3 Simulation Auto Time Out Set Cal Factor Auto Time Out Signal Output Check Auto Time Out Set Bridge Voltage Auto Time Out Set Gas Factor PGM1 S PGM1 2 3 PGM1 2 M PGM1 2 3 inc PGM1 2 3 PGM2 S XX PGM1 2 M dec inc dec PGM1 S PGM2 10 PGM1 2 M PGM1 2 3 PGM1 2 3 PGM2 S XX PGM1 2 M Figure 17 FP 700 Software Flowchart 3 3 Normal Operation In normal o...

Страница 22: ... gas content then it can be used to zero calibrate If a zero gas cal cylinder is going to be used then attach the calibration adapter and set flow rate of 200 500cc min and let sensor purge for 1 2 minutes before executing the AutoZero b From Normal Operation enter Calibration Mode by holding the programming magnet over PGM1 for 3 4 seconds Note the prompt will show that the magnetic switch is act...

Страница 23: ... menu displayed instructions The display will ask for the application of span gas in a specific concentration This concentration must be equal to the calibration gas level setting The factory default setting and recommendation for span gas concentration is 50 of the sensor s range If a span gas containing the recommended concentration is not available other concentrations may be used as long as th...

Страница 24: ...es AutoSpan Complete Sensor Life XXX Remove Span Gas d Remove the span gas and calibration adapter The ITM will report a live reading as it clears toward 0 When the reading clears below the threshold of 5 LEL 100 LEL range or 2 LEL 50 LEL range the ITM will display Span Complete and will revert to normal operation If the sensor fails to clear to less than the threshold within 5 minutes a Clearing ...

Страница 25: ... right To enter a menu item hold the magnet over PGM1 or PGM2 while the menu item is scrolling At the conclusion of the text scroll the prompt for PGM1 or for PGM2 will appear continue to hold the magnet over PGM1 or PGM2 for an additional 3 4 seconds to enter the selected menu item If there is no magnet activity while the menu item text is scrolling typically 4 repeated text scrolls the ITM will ...

Страница 26: ...uting another 3 4 second hold 2 move to another menu item by executing a momentary hold over PGM1 or PGM2 or 3 return to Normal Operation via automatic timeout of about 15 seconds the display will scroll View Sensor Status 4 times and then return to Normal Operation 3 5 3 Set AutoSpan Level Set AutoSpan Level is used to set the span gas concentration level that is being used to calibrate the senso...

Страница 27: ...as factor is 1 0 This would be used when methane is the target gas Values other than 1 0 would be used when the target gas is not methane Set Gas Factor is used to make the appropriate signal sensitivity adjustment when the target gas is a gas other than methane This is necessary because the catalytic bead sensor has different signal strengths for each combustible gas and all reading calculations ...

Страница 28: ...Carbon Disulphide 5 65 Hydrogen Sulphide 2 54 Trimethylamine 2 06 Carbon Monoxide 1 32 Methane 1 00 Vinyl Chloride 2 32 Carbon Oxysulphide 1 07 Methyl Acetate 2 01 Vinyl Ethyl Ether 2 38 Cyanogen 1 12 Methyl Alcohol 1 16 o Xylene 2 79 Cyclohexane 2 43 Methylamine 1 29 m Xylene 2 55 Cyclopropane 1 60 Methylcyclohexane 2 26 p Xylene 2 55 The menu item appears as Set Gas Factor From the Set Gas Facto...

Страница 29: ... will scroll Set Cal Factor 4 times and then return to Normal Operation 3 5 6 Set Serial ID Detcon Model FP 700 sensors can be polled serially via RS 485 Modbus RTU Refer to Section 4 0 for details on using the Modbus output feature Set Serial ID is used to set the Modbus serial ID address It is adjustable from 01 to 256 in hexadecimal format 01 FF hex The current serial ID can be viewed in View S...

Страница 30: ...al wiring problems The menu item appears as Signal Output Check From the Signal Output Check text scroll hold the magnet over PGM1 or PGM2 until the prompt appears and then hold continuously for an additional 10 seconds Once initiated the display will scroll Simulation Active until the function is stopped During simulation mode the 4 20mA value will be increased from 4 0mA to 20 0mA in 1 of range ...

Страница 31: ...user must perform new AutoSpan Section 3 4 3 6 Program Features Detcon FP 700 gas sensors incorporate a comprehensive set of diagnostic features to achieve Fail Safe Operation These Operational features and Failsafe Diagnostic features are detailed below 3 6 1 Operational Features Over Range When gas greater than the full scale range is detected the ITM display will continuously flash the full sca...

Страница 32: ... Range Fault will be declared A Range Fault will cause a Fault Detected message to scroll once a minute on the ITM display and drop the 4 20mA output to 0mA The Modbus fault register bit for Range Fault will be set and will not clear until the fault condition has been cleared The sensor should be considered Out of Service until a successful AutoSpan calibration is performed Stability Fault AutoSpa...

Страница 33: ...tolerance contact Detcon at Service detcon com or contact Detcon customer service NOTE If the 4 20mA output is not being used the Green wire from the sensor must be connected to the Black wire at the terminal on the Transient Protection Module to ensure proper sensor operation Input Voltage Fault If the detector is currently receiving an input voltage that is outside of the 11 5 28VDC range an Inp...

Страница 34: ... registers which reflect its current status Table 3 Modbus Registers FC REG Content Description R W Content Definition Value Meaning Range 03 40000 Device Type R 8 700 Sensor 03 06 40001 40001 Read Detectable Range1 2 Write Detectable Range R W 100 10000 For 0 100 For 0 10000 2 DM 0 to 10000 FP Read only TP 20 50 100 200 IR 0 to 10000 PI 0 to 10000 03 40002 Read Concentration3 2 R 1000 Bound by ra...

Страница 35: ... 2 4 Span Gas must be less than or equal to Detectable Range and is usually about of it 5 Fault status bits self reset when fault clears 6 Text in ASCII in order L byte H byte L byte See field descriptions of notation string Gas Units String Character 1 2 3 4 5 6 7 8 9 10 11 Description Units 0x20 Gas Type 0x00 Units This field is PPM PPB or _ _ where _ is a space 0x20 0x20 The units filed is term...

Страница 36: ...rd should be inspected to insure that it is not blocked Examine the porous 316SS flame arrestor within the sensor s bottom housing for signs of physical blockage or severe corrosion Also inspect inside the Junction Box for signs of water accumulation or Terminal Block corrosion 5 3 Condensation Prevention Packet A moisture condensation packet should be installed in every explosion proof Junction B...

Страница 37: ... match the new sensor with the ITM Section 3 5 6 2 Perform a successful AutoZero and AutoSpan to match the new sensor with the ITM Section 3 4 5 5 Replacement of ITM Caution Hazardous areas must be declassified before opening the junction box or removing and replacing the ITM 04 Open the junction box and remove power to FP 700 sensor by lifting the 24VDC wire in J Box 04 Use a wrench and loosen th...

Страница 38: ...he sensor assembly a Disconnect all sensor wire connections at the J Box after removing power source b Use a wrench and loosen the locking nut at the top of the ITM and unthread the ITM from the junction box 04 Feed the new FP 700 sensor assembly wires through the female NPT mounting hole and thread the assembly into the J box until tight and the ITM lens faces toward the front access point Connec...

Страница 39: ...g in sensor has drifted Perform AutoZero calculation per Section 3 4 Replace the plug in sensor AutoSpan Calibration Faults Range Stability and Clearing To clear any AutoSpan Calibration fault the AutoSpan process must be completed successfully Range Fault Probable Causes Failed Sensor Cal Gas not applied or not applied at appropriate time or problems w cal gas and delivery Check Bridge Voltage sh...

Страница 40: ...Life Check Bridge Voltage should be 2 7 0 2VDC Check validity of span gas and flow rate check MFG date on cal cylinder Check for obstructions through stainless steel sinter element including being wet Evaluate area for presence of poisoning or inhibiting gases as listed in Section 2 3 Increase calibration frequency Note the sensor s serial and report repetitive problems to Detcon s Repair Departme...

Страница 41: ...he green wire from the sensor must be connected to the terminal on the Transient Protection Module to ensure that it does not create a 4 20mA Fault section 2 6 Field Wiring Perform a Signal Output Check sequence via Section 3 5 8 and verify 4 20mA output with Current Meter Swap with new ITM to determine if the ITM s 4 20mA output circuit is faulty If the 4 20mA current loop is still out of toleran...

Страница 42: ...nty details below Detcon Inc will repair or replace without charge any such equipment found to be defective during the warranty period Full determination of the nature of and responsibility for defective or damaged equipment will be made by Detcon Inc personnel Defective or damaged equipment must be shipped to the Detcon Inc factory or representative from which the original shipment was made In al...

Страница 43: ...Conditions The original serial number must be legible on each sensor element Shipping point is FOB the Detcon factory Net payment is due within 30 days of invoice Detcon Inc reserves the right to refund the original purchase price in lieu of sensor replacement ITM Electronics Warranty Detcon Inc warrants under intended normal use each new Model 700 Intelligent Sensor Module to be free from defects...

Страница 44: ...eflect use when combined with other Control Units Zero Drift 5 per year Outputs Linear 4 20mA DC RS 485 Modbus RTU Electrical Classification Explosion proof CSA and US NRTL Class I Division 1 Groups B C D Tamb 40 Cto 75 C Class I Zone 1 Group IIB H2 ATEX ExdIIB H2T4Gb Tamb 40 Cto 75 C EN60079 0 2012 EN60079 1 2007 EN50270 2006 Ingress Protection NEMA 4X IP66 NOTE NEMA 4X IP66 ratings have been ach...

Страница 45: ...Steel Junction Box 12 5 H x 6 1 W x 4 D 317mmH x 155mmW x 101mmD Mounting holes J box 5 5 140mm center to center Aluminum Junction Box 13 H x 6 1 W x 4 D 330mmH x 155mmW x 101mmD Mounting holes J box 5 5 140mm center to center Mini Stainless Steel Junction Box 11 H x 4 24 W x 3 5 D 279mmH x 108mmW x 89mmD Mounting holes J box 3 5 89mm center to center Weight 2 lbs 0 907kg sensor only 6 lbs 2 72kg ...

Страница 46: ...s concentration full script menu prompts for AutoSpan Set up Options and Fault Reporting Faults Monitored Operating Temperature Loop Input Voltage Bridge Voltage Zero Sensor Processor Memory Calibration Cable Requirements Power Analog 3 wire shielded cable Maximum distance is 13 300 feet with 14 AWG Serial Output 2 wire twisted pair shielded cable specified for RS 485 use Maximum distance is 4 000...

Страница 47: ...time of the unit particularly on Heavy Hydrocarbon gases 327 000000 000 Programming Magnet 960 202200 000 Condensation prevention packet for J Box replace annually Calibration Accessories 943 000000 000 Calibration Wind Guard 943 000006 132 Threaded Calibration Adapter 943 020000 000 Span Gas Kit Includes calibration adapter span gas humidifier 200cc min fixed flow regulator and carrying case Not ...

Страница 48: ...sembly meets Updated ATEX listing in specifications BM 2 5 04 02 13 Updated ATEX installation instructions regarding use of ring terminal for earth ground using screw and lock washer Updated guidelines for metric special fasteners used in 700 assembly BM 2 6 04 05 13 Added 0 50 LEL range LU 2 7 11 11 13 Updated approvals label add information on 4 20mA problems BM 2 8 11 20 13 Correct Modbus Regis...

Страница 49: ...4 X Reference European Standards EN 60079 0 2012 A11 2013 EN 60079 1 2007 EN 60079 11 2012 Marking II 2 G Ex d IIB H2 T4 Gb DM and PI II 2 G Ex d IIB H2 T4 Gb FP IR and TP Production Quality Assurance Notification Number FM17ATEXQ0041 Issued by the Notified Body 1725 FM Approvals Ltd 1 Windsor Dials Windsor Berkshire UK SL4 1RS II The European Directive EMC 2014 30 UE dated from 26 02 14 Electroma...

Страница 50: ...6 of 46 This page left intentionally blank Shipping Address 4055 Technology Forest Blvd The Woodlands Texas 77381 Mailing Address P O Box 8067 The Woodlands Texas 77387 8067 Phone 888 367 4286 281 367 4100 Fax 281 292 2860 www detcon com sales detcon com ...

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