Maretron FFM100 GPS Receiver User Manual
Contents
1. 2 years from the date of original purchase If within the applicable period any such products shall be proved to Maretron s satisfaction to fail to meet the above limited warranty such products shall be repaired or replaced at Maretron s option Purchaser s exclusive remedy and Maretron s sole obligation hereunder provided product is returned pursuant to the return requirements below shall be limited to the repair or replacement at Maretron s option of any product not meeting the above limited warranty and which is returned to Maretron or if Maretron is unable to deliver a replacement that is free from defects in materials or workmanship Purchaser s payment for such product will be refunded Maretron assumes no liability whatsoever for expenses of removing any defective product or part or for installing the repaired product or part or a replacement therefore or for any loss or damage to equipment in connection with which Maretron s products or parts shall be used With respect to products not manufactured by Maretron Maretron s warranty obligation shall in all respects conform to and be limited to the warranty actually extended to Maretron by its supplier The foregoing warranties shall not apply with respect to products subjected to negligence misuse misapplication accident damages by circumstances beyond Maretron s control to improper installation operation maintenance or storage or to other than normal use or service TH2. Program this parameter to match the desired instance number of the temperature reading for this channel You can program this parameter to any value between 0 and 252 The default value for this parameter is 0 3 4 8 Configuring Channel 0 Temperature Source Program this parameter to match the desired instance number of the temperature reading for this channel You can program this parameter to any value between 0 and 252 The default value for this parameter is 129 User Defined Page 14 Revision 1 2 Maretron 3 4 9 Configuring Channel 0 Temperature Label Program this parameter with a text string which identifies the particular temperature parameter being monitored by this channel Maretron display products will display this label text when you are selecting data to display 3 5 Configuring Channel 1 3 5 1 Enabling Disabling Channel 1 NOTE This parameter is available only when the Operating Mode of the FFM100 is set to Two Independent Flow Rates By default the channel is enabled and will measure the flow rate and transmit it over the NMEA 2000 network If this parameter is programmed to Disable the channel will be completely disabled and will not measure flow rate nor transmit it over the NMEA 2000 network 3 5 2 Configuring Channel 1 Engine Instance NOTE This parameter is available only when the Operating Mode of the FFM100 is set to Two Independent Flow Rates Program this parameter to match the de
3. Section 3 3 4 Channel 0 Section 3 4 so fo ao op Channel Enable Disable Section 3 4 1 Engine Instance Section 3 4 2 Engine Label Section 3 4 3 K Factor Section 3 4 4 Data Damping Period Section 3 4 5 Reset Total Volume Recorded Section 3 4 6 Temperature Instance Section 3 4 7 Temperature Source Section 3 4 8 Temperature Label Section 3 4 9 Revision 1 2 Page 11 FFM100 User s Manual 5 Channel 1 Section 3 5 Channel Enable Disable Section 3 5 1 Engine Instance Section 3 5 2 Engine Label Section 3 5 3 K Factor Section 3 5 4 Temperature Coefficient Section 3 5 5 Data Damping Period Section 3 5 6 Reset Total Volume Recorded Section 3 5 7 Temperature Instance Section 3 5 8 Temperature Source Section 3 5 9 Temperature Label Section 3 5 10 eo Mo Memon 3 1 Advanced Configuration 3 1 1 Configuring Device Instance NMEA 2000 provides a unique device instance for each flow measuring device on a vessel This value should be programmed in each FFM100 so that each FFM100 is associated with a unique device instance number The default instance number is 0 which is used to indicate the first FFM100 that is hooked to the network Subsequent FFM100s connected to the network would be numbered 1 2 and so on 3 1 2 Configuring Channel 0 Installation Orientation If you install the Channel 0 fluid flow sensor with the FLOW arrow on the sensors
4. 149 to 746 kW M4ARP 2 E8 48 to 396 GPH 1000 to 3000 HP 746 to 2237 kW Figure 4 Fluid Flow Sensor Selection Chart for Diesel Engine Applications If you are unable to obtain maximum supply fuel flow rates from the engine manufacturer another way to get a good estimate of the engine s fuel feed rate is to disconnect the fuel return line from the tank and direct it into a five gallon bucket Run the engine at maximum RPM until the bucket is filled and calculate the return fuel flow rate by dividing the amount of fuel in the bucket by the amount of time it took to fill the bucket For instance if it took 15 minutes 0 25 hour to fill the five gallon bucket the return flow rate is Page 6 Revision 1 2 Maretron Max return flow rate 5 gallons 0 25 hours 20 gallons per hour Now add in the engine s consumption fuel rate at this RPM which should be readily available from the manufacturer s documentation for the engine and calculate the maximum supply flow rate as follows Max supply flow rate Max return flow rate Max consumption flow rate For this example let s assume that the engine manufacturer s documentation shows that the fuel consumption of the engine at the maximum RPM is 5 gallons per hour We can calculate the maximum supply flow rate as follows Max supply flow rate 20 gallons per hour 5 gallons per hour 25 gallons per hour The 25 gallons per hour maximum supply flow rate is within the
5. and return fuel flow sensors in a diesel fuel system Page 4 Revision 1 2 Maretron Supply Fuel Flow Sensor SS a PEs ay a 5 Fuel Filter lt VY muU La I Return Fuel E Flow Sensor E pe Fuel Tank Figure 3 Diesel Fuel Rate Measurement Fluid Flow Sensor Locations 1 6 4 Temperature Compensation The task of computing fuel consumption for a diesel engine is further complicated by the following two factors 1 Diesel fuel expands when heated 2 Diesel fuel is heated as it passes through the engine When using volumetric sensors such as positive displacement sensors or turbine flow sensors simply subtracting the return flow rate from the supply flow rate without taking these factors Revision 1 2 Page 5 FFM100 User s Manual into account will result in the fuel consumption being underestimated In fact without compensating for temperature if the engine were consuming no fuel the return fuel flow rate is greater than the supply fuel rate since the fuel is expanded by the engine s heat as it passes through the injection system The M1RSP 2R E8 M2RSP 2R E8 and M4ARP 2 E8 fuel flow sensors feature embedded temperature sensors so that the temperature of both the supply and return fuel is sensed and used in real time by the FFM100 to compensate for the expansion of the fuel due to the increase in temperature for the most accurate possible fuel fl
6. ccccceceeeeeeeeeceeeeeeeeeeeeeeeceeeeeeeeeeeeeeeeeeeeeeaaees 14 3 4 2 Configuring Channel 0 Engine Instance ccccceeeeeeeeeeeeeeeeeeeeeeeeteeenenaeees 14 3 4 3 Configuring Channel 0 Engine Label ccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneees 14 3 4 4 Configuring Channel 0 K factor cccceeeeessseecceceeeeeeeeeeseseeeeeeeeeeeeeeesenseeeeees 14 3 4 5 Configuring Channel 0 Data Damping Period eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 14 3 4 6 Resetting the Total Volume Recorded for Channel 0 ccccccccccceseceeeeeees 14 3 4 7 Configuring Channel 0 Temperature Instance ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 14 3 4 8 Configuring Channel 0 Temperature SOUICE cccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 14 3 4 9 Configuring Channel 0 Temperature Label cccceceeeeeeeeeeeeeeeeeeeeeeeeeees 15 Revision 1 2 Page iii FFM100 User s Manual 3 5 Configuring Channel 1 rackectecttntccteaesk ict eect tel atime lad thai tecs eh att testa ttt hoe 15 3 5 1 Enabling Disabling Channel 1 ccccccceeeeeeeeeeeeeee settee eeeeeeeeaeeeeeeeeeeeeeeeneeaaees 15 3 5 2 Configuring Channel 1 Engine Instance ccccceeeeeeeeseeeeeeeeeeeeeeeeeeeeeeeeees 15 3 5 3 Configuring Channel 1 Engine Label ccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeees 15 3 5 4 Configuring Channel 1 K factor ccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeceeeeeeeeeeeeeeeeenaaee
7. ccccceeeeeeeeeeeeeeneeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeee 4 1 6 4 Temperature Compensation 00 cee eeeeeetece cette eeeeeeeeeeeeeeeeeeeeeeeeeeeaaeeeeeeeeeeeeeeeees 5 1 6 5 Fuel Flow Sensor Selection ceeeeeeceecccceeeeeeeeeeeeeeaeeeeeeeeeeeeeeeeneaeeeeeeeeeeeeeneee 6 1 6 6 Accuracy of Diesel Fuel Flow Measurement ccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 7 1 6 7 Choosing a Fluid Flow Sensor Mounting Location cccccecceeeeseeeeeeeeeeeeeeee 8 2 nstallati mssi a a G a 8 2 1 Unpacking the BOX ssssneeeeeeoseeeennnntresserttternnrrrsseerttttnnnntnseetttttnnnnrnesettetnnnnnneeetrenn eenn 8 2 2 Choosing a Mounting Location ccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaaeeeeeeeeeeeeeeeneneeeeeeeees 8 2 3 Mounting the FFM100 ssssseessesssnsnneeesssssrrnnrrsnssserrrrnnnntssetrrnrnnnnnnssettrnnnnnnnnnseernnnnn nnne 9 2 4 Mounting the Fluid Flow Sensor ssssossssseneneeseeseseerrnnnrrseoerttrnnnnrnsorrrttennnntneeerrrennnnn ne 9 2 5 Connecting the FFM100 se sisscadeccerternasenteesactiemetqeiaeeaasecuemeebeaasaesesaueiaeentetaaseuda iasieneeqest 9 2 5 1 Fluid flow sensor Connections wioccicacesnnsncusneutneenensuantidetteckpertenssuaninetecstwnubedasuantins 9 2 5 2 NMEA 2000 Connection sdscctstcisctatsccnstecaacdetideacosdesesinel daxpestiheatdetibeaeededestnabaiate 10 3 Configuring the FFM100 eclectic cee teed yes acl c ee ievienee ded een ved enseivau ep eae ve de nedevedessteacene
8. connection to pin number assignments which are repeated in the table below Revision 1 2 Page 9 FFM100 User s Manual Pin Signal Name Connection 1 PO Fluid flow sensor 0 power connection 2 GO Fluid flow sensor 0 ground connection 3 AO Fluid flow sensor 0 phase A connection 4 BO Fluid flow sensor 0 phase B connection 5 Co Fluid flow sensor 0 phase C connection 6 TO Fluid flow sensor 0 temperature sensor connection 7 P1 Fluid flow sensor 1 power connection 8 G1 Fluid flow sensor 1 ground connection 9 A1 Fluid flow sensor 1 phase A connection 10 B1 Fluid flow sensor 1 phase B connection 11 C1 Fluid flow sensor 1 phase C connection 12 T1 Fluid flow sensor 1 temperature sensor connection Table 1 Fluid Flow Sensor Connections Please refer to Figure 6 for connecting the FFM100 to a M1RSP 2R E8 M2RSP 2R E8 or M4ARP 2 E8 fluid flow sensor This figure shows the connection of the fluid flow sensor to channel 0 Connections to other channels are similar ucjeuey Fluid flow sensor FFM100 Screw Terminals Figure 6 Fluid flow sensor Connection Diagram 2 5 2 NMEA 2000 Connection The NMEA 2000 connector can be found on the side of the enclosure The NMEA 2000 connector is a round five pin male connector see j 7 You connect the FFM100 to an NMEA 2000 network using a Maretron NMEA 2000 cable or an NMEA 2000 compatible cable by connecting the female end of the c
9. specifications of the M1RSP 2R E8 fuel flow sensor so the M1RSP 2R E8 is appropriate for this fuel flow application If the maximum supply flow rate had exceeded the M1RSP 2R E8 specifications you would have needed to select the next larger fuel flow sensor the M2RSP 2R E8 1 6 6 Accuracy of Diesel Fuel Flow Measurement Even though the fluid flow sensors used with the FFM100 are rated at 0 25 accuracy since the fuel consumption measurement is calculated as the difference of the supply and return fuel flow rates the accuracy of the fuel consumption measurement when operating in differential mode for a diesel engine depends on the ratio of the flow rate of fuel consumed by the engine to the flow rate of fuel supplied to the engine Following is a worst case analysis of diesel engine fuel consumption measurement accuracy with a 4 1 supply rate to consumption rate ratio this ratio is typical of many diesel engines This assumes that both the supply and return fuel flow sensors are at the limit of their specifications in the way that will cause the most inaccuracy in the fuel consumption calculation Actual Supply Flow Rate 80 0 LPH Actual Engine Fuel Consumption 20 0 LPH Actual Return Flow Rate 60 0 LPH Measured Supply Flow Rate 80 2 LPH This assumes that the supply sensor reads 0 25 high Measured Return Flow Rate 59 85 LPH This assumes that the return sensor reads 0 25 low Calculated Fuel Consumption 20 35 LPH Error 1
10. to 70 C Relative Humidity 93 RH 40 per IEC60945 8 2 Vibration 2 13 2Hz 1mm 13 2 100Hz 7m s per IEC 60945 8 7 Solar Radiation Ultraviolet B A Visible and Infrared per IEC 60945 8 10 Corrosion Salt Mist 4 times 7days 40 C 95 RH after 2 hour Salt Spray Per IEC 60945 8 12 Electromagnetic Emission Conducted and Radiated Emission per IEC 60945 9 Electromagnetic Immunity Conducted Radiated Supply and ESD per IEC 60945 10 Safety Precautions Dangerous Voltage Electromagnetic Radio Frequency per IEC 60945 12 7 Technical Support If you require technical support for Maretron products you can reach us in any of the following ways Telephone 1 866 550 9100 Fax 1 602 861 1777 E mail support maretron com World Wide Web http Awww maretron com Page 20 Mail Maretron LLP Attn Technical Support 9014 N 23 Ave Suite 10 Phoenix AZ 85021 USA Revision 1 2 Maretron 8 Installation Template Please check the dimensions before using the following diagram as a template for drilling the mounting holes because the printing process may have distorted the dimensions 3 45 87 6mm 3 00 76 2mm 4 20 106 7mm Figure 9 Mounting Surface Template Revision 1 2 Page 21 FFM100 User s Manual 9 Maretron 2 Year Limited Warranty Maretron warrants the FFM100 to be free from defects in materials and workmanship for two
11. 100 uses this PGN to transmit fluid flow rate information The factory default for periodic transmission rate is twice per second The transmission of this PGN can be disabled see PGN 126208 NMEA Request Group Function Transmission Periodic Rate Field 1 Engine Instance 8 bit unsigned integer This field indicates the particular engine for which this data applies A single engine will have an instance of 0 Engines in multi engine boats will be numbered starting at 0 at the bow of the boat incrementing to n going in towards the stern of the boat For engines at the same distance from the bow are stern the engines are numbered starting from the port side and proceeding towards the starboard side 2 Engine Oil Pressure 16 bit unsigned integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available 3 Engine Oil Temperature 16 bit unsigned integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available 4 Engine Temperature 16 bit unsigned integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available 5 Alternator Potential 16 bit signed integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available Revision 1 2 Appendix A NMEA 2000 Interfacing Page A1 FFM100 User s Manual Fuel Rate 16 bit signed integer This field indicates the fuel consu
12. 45 FCC and CE Mark Electromagnetic Compatibility NMEA 2000 Parameter Group Numbers PGNs See Appendix A for Details Description PGN PGN Name Default Rate Periodic Data PGNs 127489 Engine Parameters Dynamic 2 Times Second 127497 Trip Parameters Engine 1 Time Second 130312 Temperature 0 5 Times Second Response to Requested PGNs 126464 PGN List Transmit and Receive N A 126996 Product Information N A 126998 Configuration Information N A Protocol PGNs 059392 ISO Acknowledge N A 059904 ISO Request N A 060928 ISO Address Claim N A 065240 ISO Address Command N A 126208 NMEA N A Maretron Proprietary PGNs 128720 Configuration N A Electrical Parameter Value Comment Operating Voltage 9 to 32 Volts DC Voltage Power Consumption 150mA Maximum Current Drain Load Equivalence Number LEN 3 NMEA 2000 Spec 1LEN 50mA Reverse Battery Protection Yes Indefinitely Load Dump Protection Yes Energy Rated per SAE J1113 Mechanical Parameter Value Comment Size 3 50 x 4 20 x 2 03 Including Flanges for Mounting 88 9mm x 106 7mm x 51 6mm Weight 13 oz 368 5 g Revision 1 2 Page 19 FFM100 User s Manual Environmental Parameter Value IEC 60945 Classification Exposed Degree of Protection IP64 Operating Temperature 25 C to 55 C Storage Temperature 40 C
13. 75 The resulting 1 75 error value is what appears in the FFM100 specifications for differential flow rate accuracy Revision 1 2 Page 7 FFM100 User s Manual 1 6 7 Choosing a Fluid Flow Sensor Mounting Location Choosing a proper mounting location for fluid flow sensors is critical to obtaining accurate tank level measurements Because of the positive displacement design of the FFM100 sensors no pulse dampening or flow straightening is necessary The installation instructions packaged with each fuel flow sensor contain details on choosing a mounting location and installation The ideal location for the supply fuel flow sensor is immediately after the fuel filter NOTE Maretron fuel flow sensors have anti tamper blue silicone on one or more of the screws that hold the body of the sensor together Do not remove these screws Removing these screws will void the warranty on the sensor 2 Installation 2 1 Unpacking the Box When unpacking the box containing the Maretron FFM100 you should find the following items 1 FFM100 Fuel Flow Monitor 1 Parts Bag containing 4 Stainless Steel Mounting Screws 1 FFM100 User s Manual 1 Warranty Registration Card If any of these items are missing or damaged please contact Maretron 2 2 Choosing a Mounting Location Please consider the following when choosing a mounting location 1 The FFM100 is waterproof so it can be mounted in a damp or dry location 2 The orientation i
14. E FOREGOING WARRANTIES ARE EXPRESSLY IN LIEU OF AND EXCLUDES ALL OTHER EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE Statements made by any person including representatives of Maretron which are inconsistent or in conflict with the terms of this Limited Warranty shall not be binding upon Maretron unless reduced to writing and approved by an officer of Maretron IN NO CASE WILL MARETRON BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES DAMAGES FOR LOSS OF USE LOSS OF ANTICIPATED PROFITS OR SAVINGS OR ANY OTHER LOSS INCURRED BECAUSE OF INTERRUPTION OF SERVICE IN NO EVENT SHALL MARETRON S AGGREGATE LIABILITY EXCEED THE PURCHASE PRICE OF THE PRODUCT S INVOLVED MARETRON SHALL NOT BE SUBJECT TO ANY OTHER OBLIGATIONS OR LIABILITIES WHETHER ARISING OUT OF BREACH OF CONTRACT OR WARRANTY TORT INCLUDING NEGLIGENCE OR OTHER THEORIES OF LAW WITH RESPECT TO PRODUCTS SOLD OR SERVICES RENDERED BY MARETRON OR ANY UNDERTAKINGS ACTS OR OMISSIONS RELATING THERETO Maretron does not warrant that the functions contained in any software programs or products will meet purchaser s requirements or that the operation of the software programs or products will be uninterrupted or error free Purchaser assumes responsibility for the selection of the software programs or products to achieve the intended results and for the installation use and results obtained from s
15. Maretron FFM100 Fuel Flow Monitor User s Manual Revision 1 2 Copyright 2012 Maretron LLP All Rights Reserved Maretron LLP 9014 N 23 Ave 10 Phoenix AZ 85021 http www maretron com Maretron Manual Part M003010 Revision 1 2 Page FFM100 User s Manual Revision History Revision Description 1 0 Release for Review 1 1 Public Release 1 2 Corrected formatting problems in certain figures Added notes about tamper proof silicone seals on sensor screws Added information about location of sensors Page ii Revision 1 2 Maretron Table of Contents k RMS ea ence ea aes te ac e e ete 1 MW OO Uh tte A dee esirekdes nee ec ieee ie deveu de A ease eee eee eee 1 1 2 Firmware REVISION pccncereemseevieaveenytreuneeviveyiceybeusaueviverteryhveybeeyiuauleureauieeybrestuuut eee elec teal 1 13 Wr AO Mh 8 tetera A acetate E AE E aay mane A 1 1 4 PPI TOO ACCOSSONES asacninsdssiagnesassoasntonesniasanjasadaicaedaned ides tsanadtonoedinaetbigoeacualLenthebevesatnued 1 MS UMC WAST siei cst thee iia thie a tenth aaah a 1 1 6 Theory of Operation cee ec ccceeceee eee eeeeeeecaeeeeeeeeeeeeeaaaaaaeeaeeeeeeeeeesesaaaeaeeeeeeeeeenenee 2 1 6 1 Operating Modes ccccccceceeeeeeeeeeeeeeeeeeeeeeeeeeeaaaaeaeeeeeeeeeeeseseaaeaeeeeeeeeeeeeeenene 2 15 2 Sensor ACCUNACY occi a crncciaccagst Annona a nadsrorn cetera onnetionaetadmeamesetedansnatenain 2 1 6 3 Diesel Fuel Flow Measurement 22
16. able to the FFM100 note the key on the male connector and keyway on the female connector Be sure the cable is connected securely and that the collar on the cable connector is tightened firmly Connect the other end of the cable male to the NMEA 2000 network in the same manner The FFM100 is designed such that you can plug or unplug it from an NMEA 2000 network while the power to the network is Page 10 Revision 1 2 Maretron connected or disconnected Please follow recommended practices for installing NMEA 2000 network products Pins Connector Threads Sockets Connector Threads Male Connector Female Connector Pin 1 Shield Pin 2 NET S power supply positive V Pin 3 NET C power supply common V Pin 4 NET H CAN H Pin 5 NET L CAN L Figure 7 NMEA 2000 Connector Face Views 3 Configuring the FFM100 The FFM100 has several configurable parameters which are shown below including the default values If you are not using the default values then you will need to refer to the corresponding section for configuring the FFM100 appropriately 1 Advanced Configuration Section 3 1 Orpa Device Instance Channel 0 Installation Channel 1 Installation Channel 0 Allow negative flow Channel 1 Allow negative flow Differential Mode Allow negative flow Installation Description NMEA 2000 PGN Enable Disable Restore Factory Defaults 2 Device Label Section 3 2 3 Operating Mode
17. aid programs or products No specifications samples descriptions or illustrations provided Maretron to Purchaser whether directly in trade literature brochures or other documentation shall be construed as warranties of any kind and any failure to conform with such specifications samples descriptions or illustrations shall not constitute any breach of Maretron s limited warranty Warranty Return Procedure To apply for warranty claims contact Maretron or one of its dealers to describe the problem and determine the appropriate course of action If a return is necessary place the product in its original packaging together with proof of purchase and send to an Authorized Maretron Service Location You are responsible for all shipping and insurance charges Maretron will return the replaced or repaired product with all shipping and handling prepaid except for requests requiring expedited shipping i e overnight shipments Failure to follow this warranty return procedure could result in the product s warranty becoming null and void Maretron reserves the right to modify or replace at its sole discretion without prior notification the warranty listed above To obtain a copy of the then current warranty policy please go to the following web page http www maretron com company warranty php Page 22 Revision 1 2 Maretron Appendix A NMEA 2000 Interfacing FFM100 NMEA 2000 Periodic Data Transmitted PGNs PGN 130312 Temperat
18. ate value for thermal expansion coefficient of the fluid being measured The default value of this field is 0 083 C which is appropriate for diesel fuel The configuration tools have predefined values for common fluids diesel engine oil gasoline and water You may select one of these values or choose your own 3 5 6 Configuring Channel 1 Data Damping Period NOTE This parameter is available only when the Operating Mode of the FFM100 is set to Two Independent Flow Rates You can configure a damping parameter to smooth the flow rate readings or make them more responsive The data damping is configurable between 0 2 25 0 seconds The default data damping period is 3 0 seconds 3 5 7 Resetting the Total Volume Recorded for Channel 1 NOTE This parameter is available only when the Operating Mode of the FFM100 is set to Two Independent Flow Rates The FFM100 maintains the total volume recorded in EEPROM so that it is maintained across power cycles Select this menu entry to reset the total volume recorded to zero 3 5 8 Configuring Channel 1 Temperature Instance Program this parameter to match the desired instance number of the temperature reading for this channel You can program this parameter to any value between 0 and 252 The default value for this parameter is 0 3 5 9 Configuring Channel 1 Temperature Source Program this parameter to match the desired instance number of the temperature reading for this chann
19. d M2RSP 2R E8 fuel flow sensors Page 2 Revision 1 2 Maretron 0 35 X 0 15 gt 3 0 157 O lt 0 35 30 n A 20 e 7a 10 6 O 25 50 75 100 Flow rate Figure 1 M1RSP 2R E8 and M2RSP 2R E8 Accuracy and Pressure Loss Please refer to Figure 2 below for a chart detailing typical accuracy and pressure loss versus flow rate for the M4ARP 2 E8 fuel flow sensor Revision 1 2 Page 3 FFM100 User s Manual d 0 15 e i 0 a a 5 0 15 i lt 80 ae x 60 8 2 40 7 g 20 amp 0 25 50 75 100 Flow rate Figure 2 M4ARP 2 E8 Typical Accuracy and Pressure Loss 1 6 3 Diesel Fuel Flow Measurement Most diesel engines do not use all of the fuel that is supplied to them by the fuel pump via the supply line A portion of the fuel is consumed by the engine but the majority of the fuel is used for cooling the injection system and returned to the fuel tank via the return line For diesel engines the FFM100 will operate in its differential mode and will measure the net fuel consumption of these engines by separately measuring the fuel sent to the engine via the supply line and the fuel returned to the fuel tank from the engine via the return line The difference between these two readings is the fuel consumption of the engine Please refer to Figure 3 below for a system diagram demonstrating the location of the supply
20. dividually enable or disable each of these messages You may also change the rate of transmission of each of these messages if desired 3 1 9 Restoring Factory Default Settings Selecting this configuration option causes all stored parameters in the FFM100 to be reset to the values they contained when the unit was manufactured 3 2 Configuring the Device Label Program this parameter with a text string which identifies this device Maretron display products will display this label text when you are selecting data to display 3 3 Configuring the Operating Mode The FFM100 can be operated in one of two selectable operating modes 1 Differential Flow Rate default in this mode the FFM100 measures fuel consumption of a diesel engine by measuring the flow rate of the fuel sent from the fuel tank to the engine and the flow rate of the fuel returned from the engine to the fuel tank and computing the difference between these two flow rates with temperature compensation This difference is the flow rate of the fuel actually consumed by the engine and is transmitted as a single parameter over the NMEA 2000 network 2 Two Individual Flow Rates in this mode the FFM100 can measure two independent flow rates of any fluids diesel oil water etc and transmit Revision 1 2 Page 13 FFM100 User s Manual the two flow rate measurements as separate parameters over the NMEA 2000 network 3 4 Configuring Channel 0 3 4 1 Enabling Di
21. ds 11 3 1 Advanced Configuration ses ciettscetsctetcetecutedaltadetadelia elie Undepsset nicl ddetndebcstadebassbneeideetpdebadebens 12 3 1 1 Configuring Device Instance osicecssernresetraresmceytemtaneutcareeeuteatmessaeutiembenr bere ealsneutad 12 3 1 2 Configuring Channel 0 Installation Orientation ceeeeeeeeeeeeeeeeeeeeeeeeeeneeees 12 3 1 3 Configuring Channel 1 Installation Orientation eeeeeeeeeeeeeeeeeeeeeeeeeeneees 12 3 1 4 Configuring Channel 0 Allow Negative FIOW ccccceeeeseeeeeeeeeeeeeeeeeeeeeeees 12 3 1 5 Configuring Channel 1 Allow Negative FIOW cccccecceeseeeseeeeeeeeeeeeeeeeeeeees 13 3 1 6 Configuring Differential Mode Allow Negative FIOW cceeeeeeeeeeeeesteeeees 13 3 1 7 Configuring Installation DeSCription eeeeeeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneeeees 13 3 1 8 Configuring NMEA 2000 PGN Enable Disable eceeeeeeeeceeeeeeeeeeeeeeeteeees 13 3 1 9 Restoring Factory Default Settings ecceceeeeccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeaeeees 13 3 2 Configuring the Device Label ceeeecccescccece eee eeeeeeeeeaeeeeeeeeeeeeeaaaaaeaeeeeeeeeeeeeeeenaanees 13 3 3 Configuring the Operating MOde ccccceeeeeeeeeeeeneceeeeeeeeeeeeeeeeaaeeeeeeeeeeeeeseeneaaeees 13 3 4 Configuring Channel 0 cciicacscoteveandcmntadaomnrnetnenuarncnn tn otwenedeetnemuataanuatnds 14 3 4 1 Enabling Disabling Channel 0
22. el You can program this parameter to any value between 0 and 252 The default value for this parameter is 129 User Defined 3 5 10 Configuring Channel 1 Temperature Label Program this parameter with a text string which identifies the particular temperature parameter being monitored by this channel Maretron display products will display this label text when you are selecting data to display 4 Maintenance Regular maintenance is not required however an occasional inspection will ensure continued proper operation of the Maretron FFM100 Perform the following tasks periodically e Clean the unit with a soft cloth Do not use chemical cleaners as they may remove paint or markings or may corrode the FFM100 enclosure or seals Do not use any cleaners containing acetone as they will deteriorate the plastic enclosure Page 16 Revision 1 2 Maretron e Ensure that the unit is mounted securely and cannot be moved relative to the mounting surface If the unit is loose tighten the screws holding the cable ties e Check the security of the cable connected to the NMEA 2000 interface and tighten if necessary e Check the security of all of the fluid flow sensor connections on the top of the unit and tighten if necessary Revision 1 2 Page 17 FFM100 User s Manual 5 Troubleshooting If you notice unexpected operation of the Maretron FFM100 follow the troubleshooting procedures in this section to remedy simple problems Symptom T
23. iguring Channel 1 Allow Negative Flow The M1RSP 2R E8 M2RSP 2R E8 and M4ARP 2 E8 fuel flow sensors are capable of sensing flow in both directions When this parameter is in the default state of Yes the FFM100 will report reverse flow on Channel 1 as a negative flow rate If you do not wish to see negative flow rates from the Channel 1 sensor you may change this parameter to No When this parameter is set to No the FFM100 will report a zero flow rate for Channel 1 when reverse flow occurs 3 1 6 Configuring Differential Mode Allow Negative Flow In differential mode if no fuel consumption occurring but fuel is flowing through both the supply and return fuel flow sensors the resulting calculated net fuel consumption can result in a small negative value When this parameter is set to the default state of No the FFM100 will report this as a zero flow rate value If you wish to see these small negative values transmitted by the FFM100 change the value of this parameter to Yes 3 1 7 Configuring Installation Description You can configure the two installation description parameters with any text you wish Examples include date of installation location etc NMEA 2000 diagnostic tools such as Maretron N2KAnalyzer can display this information 3 1 8 Configuring NMEA 2000 PGN Enable Disable The FFM100 is capable of transmitting NMEA 2000 messages or PGNs associated with monitored fluid senders You may in
24. l engines or gasoline engines The FFM100 can be used with the positive displacement sensors to detect flow rates of many other types of fluid as well including water hydraulic oil or other fluids The Maretron FFM100 is designed to operate within the harsh demands of the marine environment However no piece of marine electronic equipment can function properly unless installed calibrated and maintained in the correct manner Please read carefully and follow these instructions for installation calibration and usage of the Maretron FFM100 in order to ensure optimal performance 1 2 Firmware Revision This manual corresponds to FFM100 firmware revision 1 0 1 1 3 Features The Maretron FFM100 has the following features e NMEA 2000 interface e Adapts up to two fluid flow sensors to the NMEA 2000 network e Each channel independently programmable to match fluid flow sensor characteristics e The FFM100 can be programmed to measure a differential flow rate using two fluid flow sensors supply and return flow for diesel engines or two completely independent flow rates 1 4 FFM100 Accessories Maretron offers the following accessories for the FFM100 e M1RSP 2R E8 Fuel Flow Sensor 20 to 200 HP 0 53 to 26 4 GPH 2 to 100 LPH e M2RSP 2R E8 Fuel Flow Sensor 200 to 1000 HP 4 to 132 GPH 15 To 500 LPH e M4ARP 2 E8 Fuel Flow Sensor 1000 to 3000 HP 48 to 396 GPH 180 To 1500 LPH 1 5 Quick Install Installing the Maretron FFM100 involve
25. mption rate of the engine in units of 0 0001 cubic meters hour Total Engine Hours 32 bit unsigned integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available Engine Coolant Pressure 16 bit unsigned integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available Fuel Pressure 16 bit unsigned integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available Reserved 8 bits The FFM100 sets all bits in this field to a value of 1 Engine Discrete Status 1 16 bits The FFM100 sets all bits in this field to a value of 0 Engine Discrete Status 2 16 bits The FFM100 sets all bits in this field to a value of Q Percent Engine Load 8 bit signed integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available Percent Engine Torque 8 bit signed integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available PGN 127497 Trip Parameters Engine The FFM100 uses this PGN to transmit more slowly changing engine data The factory default for periodic transmission rate is once per second The transmission of this PGN can be disabled see PGN 126208 NMEA Request Group Function Transmission Periodic Rate Field 1 Field 2 Field 3 Field 4 Field 5 Engi
26. nd clean if necessary Check the rotors to see if they are damaged and replace if necessary Check the sensor connections to see if they are over tightened and re adjust if necessary If a line strainer is installed check to see if it is partially blocked and clean if necessary Ensure that the fluid being measured is less than 1000 centipoise viscosity Ensure that the fluid flow rate is within the minimum and maximum specifications for the sensor Check for air in the system and bleed if present Check the fluid flow sensor body and rotors for excess wear caused by incorrect installation Figure 8 Troubleshooting Guide If these steps do not solve your problem please contact Maretron Technical Support refer to Section 7 for contact information Page 18 Revision 1 2 6 Technical Specifications Specifications Maretron Parameter Value Comment Accuracy Differential Mode 1 75 of Using M1RSP 2R E8 sensors reading K factors programmed into FFM100 4 1 fuel supply fuel consumption ratio Accuracy Two Independent 0 25 of Using M1RSP 2R E8 sensor Sensors reading K factors programmed into FFM100 Resolution 0 1 LPH 0 026 GPH Certifications Parameter Comment NMEA 2000 Level A Maritime Navigation and Radiocommunication Equipment amp Systems IEC 61162 3 Maritime Navigation and Radiocommunication Equipment amp Systems Tested to IEC 609
27. ne Instance 8 bit unsigned integer This field indicates the particular engine for which this data applies A single engine will have an instance of 0 Engines in multi engine boats will be numbered starting at 0 at the bow of the boat incrementing to n going in towards the stern of the boat For engines at the same distance from the bow are stern the engines are numbered starting from the port side and proceeding towards the starboard side Trip Fuel Used 16 bit unsigned integer This field indicates the total fuel used since the counter was last reset with a resolution of 0 001 cubic meters Fuel Rate Average 16 bit signed integer The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available Fuel Rate Economy 16 bit signed integer This field indicates the current fuel consumption rate with a resolution of 0 0001 cubic meters hour Instantaneous Fuel Economy 16 bit signed integer This field indicates the current fuel consumption rate with a resolution of 0 0001 cubic meters hour Page A2 Appendix A NMEA 2000 Interfacing Revision 1 2
28. ow measurement 1 6 5 Fuel Flow Sensor Selection The fluid flow sensors must likewise be sized to accommodate the flow rate of fluid flowing through the supply and return lines as opposed to the net fuel consumption used by the engine If too small a fuel flow sensor is used excessive back pressure will occur through the sensors and the sensor may wear prematurely For example consider the M1RSP 2R E8 fluid flow sensor which is rated at a maximum flow rate of 26 4 GPH 100 LPH A typical diesel engine will consume 20 of the fuel sent to the engine so under this assumption this fuel sensor will be able to support a diesel engine which consumes 5 28 GPH 20 LPH The fluid flow sensor you select must have sufficient range to measure the supply flow rate of the engine whose fuel consumption you are monitoring The table in Figure 4 below shows the maximum fuel supply flow rates that can be sensed by each fuel flow sensor and approximate engine power ranges for each fuel flow sensor type Please consult your engine s documentation or contact your engine manufacturer for the maximum supply fuel flow rate sometimes called fuel feed rate for the specific engine whose fuel consumption you wish to monitor Approximate Fluid Flow Sensor Flow Rate Range Engine Power 180 to 1500 LPH Range M1RSP 2R E8 0 53 to 26 4 GPH 20 to 200 HP 2 to 100 LPH 14 9 to 149 kW M2ESP 2R E8 4 to 132 GPH 200 to 1000 HP 15 to 500 LPH
29. pointing in the same direction as the fuel flow you will not need to change this parameter from the factory default setting If you inadvertently install the sensor in the reverse direction rather than reinstalling the sensor you may change this parameter from Normal to Reverse and the FFM100 will compensate for the reversed installation of the flow sensor 3 1 3 Configuring Channel 1 Installation Orientation If you install the Channel 1 fluid flow sensor with the FLOW arrow on the sensors pointing in the same direction as the fuel flow you will not need to change this parameter from the factory default setting If you inadvertently install the sensor in the reverse direction rather than reinstalling the sensor you may change this parameter from Normal to Reverse and the FFM100 will compensate for the reversed installation of the flow sensor 3 1 4 Configuring Channel 0 Allow Negative Flow The M1RSP 2R E8 M2RSP 2R E8 and M4ARP 2 E8 fuel flow sensors are capable of sensing flow in both directions When this parameter is in the default state of Yes the FFM100 will report reverse flow on Channel 0 as a negative flow rate If you do not wish to see negative flow rates from the Channel 0 sensor you may change this parameter to No When this parameter is set to No the FFM100 will report a zero flow rate for Channel 0 when reverse flow occurs Page 12 Revision 1 2 Maretron 3 1 5 Conf
30. r Locations cceeeeeeeeeees 5 Figure 4 Fluid Flow Sensor Selection Chart for Diesel Engine Applications eee 6 Figure 5 Mounting the FFM100 cect tet ees sted ee tee ei Se ca enter dee daar 9 Figure 6 Fluid flow sensor Connection Diagram cccccceeeeeeeeeeeeeeeeeeeeeeeeeeeenneeeeeeeeeeeteee 10 Figure 7 NMEA 2000 Connector Face VieWS cc c csccsesesesssesesscsesesesesscecetststsesesseseaeateees 11 Figure 8 Troubleshooting Guide sre savas caeschaviaee ete vchae segs cues tase terse vose2ota2caev exe vOease tees eters 18 Figure 9 Mounting Surface Template cccccceeceeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeeeeeeeeeeeaeeeeeeeeeeeteee 21 Table of Appendices Appendix A NMEA 2000 Interfacing cccccccccccccscscesesesesesesececesesecececesesesessesesesesesssesesses A1 Page iv Revision 1 2 Maretron 1 General 1 1 Introduction Congratulations on your purchase of the Maretron Fuel Flow Monitor FFM100 Maretron has designed and built your monitor to the highest standards for years of reliable dependable and accurate service Maretron s Fuel Flow Monitor FFM100 is used to adapt up to two positive displacement fluid flow sensors to the NMEA 2000 network Fluid Flow sensors sold separately This allows you to observe engine fuel usage on a vessel where there are NMEA 2000 compatible displays With the appropriate sensor the FFM100 reports flow rate for diese
31. roubleshooting Procedure No Fuel Flow data visible on NMEA 2000 network No Fluid Temperature data visible on NMEA 2000 network Fluid will not flow through the fluid flow sensors Reduced flow through the fluid flow sensors Inaccurate fluid flow reading Ensure that power is supplied to the ac 2000 Ensure that the FFM100 is properly connected to the NMEA 2000 network Ensure that fluid flow sensors are properly connected to the FFM100 Ensure that each channel that you wish to monitor is configured correctly and that instance numbers are configured correctly Ensure that the FFM100 has the appropriate NMEA 2000 PGNs enabled If operating in the NMEA 2000 Mode check the connection to the NMEA 2000 interface see Section 2 5 1 and tighten if necessary network Proper network power can be checked by measuring the voltage at an open tee between NET S and NET C The voltage should be between 9 and 16 volts Ensure that both trunk line terminators are in place Proper network termination can be checked by removing network power and measuring the resistance at an open tee between NET L and NET H signals The resistance should read approximately 60 ohms two 120 ohm terminators in Check the meter for foreign matter blocking the rotors Dismantle the sensor and clean the rotors then reassemble the sensor Ifa line strainer is installed check to see whether it is blocked a
32. s 15 3 5 5 Configuring Channel 1 Temperature Coefficient cccccccccccceeeeeeeeeeeeeees 15 3 5 6 Configuring Channel 1 Data Damping Period ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 16 3 5 7 Resetting the Total Volume Recorded for Channel 1 ccccccccecceseeeeeeees 16 3 5 8 Configuring Channel 1 Temperature Instance ccccccccccccecceceeeeeeeeeeeeeeees 16 3 5 9 Configuring Channel 1 Temperature SOUICE cccceeeeeeeeeeeeteeeeeeeeeeeeeeeeeeaeees 16 3 5 10 Configuring Channel 1 Temperature Label ccccceeeeeeeeceeeeeeeeeeeeeeeteeees 16 4 A PAANMGMANCS steak siact last anaa naasa aa ben dita nA aaa aiaa adai ce Altai ts htc hee 16 5 WIFOUDIGSMOOUMNG ta nenn crn los ao fe ea cad ki naan canara 18 63 lechnical SOS CHI CAMO segs sleds acts cases oss de os toed es tyes eae de aa TAa Cees tgid cede ate 19 7 TECHNICAL SUD DORs sinini aaa a a E a aa eee eee 20 8 Installation Template ooonnennnneneeeeeeeeeeennnteeeeerettttrntnnntrtsstttttnnnnttnserttttnnnnnnneetttnnnnneeee eee 21 9 Maretron 2 Year Limited Warranty cccceeceeeeeeeeeeeeeeeeeeeeeeeeeeeeesececeaeeeeeeeeeeeeeeeeeeaaees 22 Table of Figures Figure 1 M1RSP 2R E8 and M2RSP 2R E8 Accuracy and Pressure LOSS ccccceeeeeee 3 Figure 2 M4ARP 2 E8 Typical Accuracy and Pressure LOSS ccceeeeeeeeeeeeeeeeeeeeeeeeeeeeees 4 Figure 3 Diesel Fuel Rate Measurement Fluid Flow Senso
33. s not important so the FFM100 can be mounted on a horizontal deck vertical bulkhead or upside down if desired 3 The FFM100 is temperature rated to 55 C 130 F so it should be mounted away from engines or engine rooms where the operating temperature exceeds the specified limit Page 8 Revision 1 2 Maretron 2 3 Mounting the FFM100 Attach the FFM100 securely to the vessel using the included stainless steel mounting screws or other fasteners as shown in Figure 5 below Do not use threadlocking compounds containing methacrylate ester such as Loctite Red 271 as they will cause stress cracking of the plastic enclosure Figure 5 Mounting the FFM100 2 4 Mounting the Fluid Flow Sensor Since the FFM100 supports different fluid flow sensors depending on the application please consult the installation instructions that are packaged with each sensor for detailed installation instructions 2 5 Connecting the FFM100 The FFM100 requires two types of electrical connections 1 the fluid flow sensor connections which are described in Section 2 5 1 and 2 the NMEA 2000 connection refer to Section 2 5 2 2 5 1 Fluid flow sensor Connections The FFM100 fluid flow sensor connections are made by connecting to the 12 pin terminal strip on the top of the unit First remove the four screws at the corners of the unit detaching the splash guard from the unit On the bottom of the splash guard you will find a label detailing the wire
34. s the following steps Please refer to the individual sections for additional details Revision 1 2 Page 1 FFM100 User s Manual Unpack the Box Section 2 1 Choose a Mounting Location Section 2 2 Mount the FFM100 Section 2 3 Mount the Flow Sensors and Connect Fluid Lines Section 2 4 Connect the Flow Sensors to the FFM100 Section 2 5 1 Connect the FFM100 to the NMEA 2000 network Section 2 5 1 Configure the FFM100 Section 3 ao OL SN 1 6 Theory of Operation The FFM100 operates by using positive displacement fluid flow sensors These sensors are volumetric they measure the volume of fluid passing through them as opposed to the mass of the fluid 1 6 1 Operating Modes The FFM100 can operate in one of two user selectable operating modes 1 Differential Flow Rate this mode is used for diesel engines that recirculate unused fuel back into the fuel tank These engines will have separate supply and return fuel lines 2 Two Independent Flow Rates the FFM100 can measure flow rates from two independent sources for example a water flow rate on one channel and a gasoline fuel flow rate on another channel 1 6 2 Sensor Accuracy The M1RSP 2R E8 M2RSP 2R E8 and M4ARP 2 E8 fuel flow sensors use positive displacement technology These sensors are extremely accuracy over a wide flow range Please refer to Figure 1 below for a chart detailing typical accuracy and pressure loss versus flow rate for the M1RSP 2R E8 an
35. sabling Channel 0 By default the channel is enabled and will measure the flow rate and transmit it over the NMEA 2000 network If this parameter is programmed to Disable the channel will be completely disabled and will not measure flow rate nor transmit it over the NMEA 2000 network 3 4 2 Configuring Channel 0 Engine Instance Program this parameter to match the desired engine instance number of the flow rate and total fuel used for this channel You can program this parameter to any value between 0 and 252 3 4 3 Configuring Channel 0 Engine Label Program this parameter with a text string which identifies the particular parameter being monitored by this channel Maretron display products will display this label text when you are selecting data to display 3 4 4 Configuring Channel 0 K factor Program this parameter to match the K factor that appears on the flow sensor connected to this channel 3 4 5 Configuring Channel 0 Data Damping Period You can configure a damping parameter to smooth the flow rate readings or make them more responsive The data damping is configurable between 0 2 25 0 seconds The default data damping period is 3 0 seconds 3 4 6 Resetting the Total Volume Recorded for Channel 0 The FFM100 maintains the total volume recorded in EEPROM so that it is maintained across power cycles Select this menu entry to reset the total volume recorded to zero 3 4 7 Configuring Channel 0 Temperature Instance
36. sired engine instance number of the flow rate and total fuel used for this channel You can program this parameter to any value between 0 and 252 3 5 3 Configuring Channel 1 Engine Label NOTE This parameter is available only when the Operating Mode of the FFM100 is set to Two Independent Flow Rates Program this parameter with a text string which identifies the particular parameter being monitored by this channel Maretron display products will display this label text when you are selecting data to display 3 5 4 Configuring Channel 1 K factor Program this parameter to match the K factor that appears on the flow sensor connected to this channel 3 5 5 Configuring Channel 1 Temperature Coefficient NOTE This parameter is available only when the Operating Mode of the FFM100 is set to Differential Mode In a diesel engine the diesel fuel is used to help cool the fuel injection system Therefore the fuel returned from the engine to the tank has a higher temperature than the fuel sent to the engine from the tank Diesel fuel expands when heated To calculate the most accurate fuel usage measurement the FFM100 accounts for this expansion by sensing the temperature at the supply flow sensor and the receive flow sensor and calculating the effect of the temperature difference on the fuel expansion In order to do this compensation this parameter Revision 1 2 Page 15 FFM100 User s Manual is programmed with the appropri
37. ure The FFM100 uses this PGN to provide a regular transmission of fluid temperatures The factory default for periodic transmission rate is once every two seconds The transmission of this PGN can be disabled see PGN 126208 NMEA Request Group Function Transmission Periodic Rate Field 1 SID The sequence identifier field is used to tie related PGNs together 2 Temperature Instance The FFM100 sets this field to identify a particular temperature measurement from the source specified in Field 3 Every temperature measurement from a given source type on the network should have a distinct instance value so that monitoring devices and displays can identify which measurement is which 3 Temperature Source This field is used to indicate the type of temperature measurement being taken Possible values for this field include Sea Temperature Outside Temperature Inside Temperature Engine Room Temperature Main Cabin Temperature Live Well Temperature Bait Well Temperature Refrigeration Temperature Heating System Temperature and Freezer Temperature 4 Actual Temperature This field is used to indicate the temperature whose source is specified in field 2 in units of 0 01 C 5 Set Temperature The FFM100 sets this field to a reserved NMEA 2000 value indicating Data Not Available 6 Reserved bits The FFM100 sets all bits in this field to a value of 1 PGN 127489 Engine Parameters Dynamic The FFM
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