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FS-9006OM 

– REV K 

 

 
 

1.3 GENERAL DESCRIPTION 

 

On Liquid Dry Low Nox Applications as well as those applications with significant levels of water and steam 

injection, the ultra-violet light sensed by the Geiger Mueller tube based flame detectors is absorbed by the fog 
of  fuel,  steam  or  wate

r. GE’s research center invented a silicon carbide (SiC) photodiode that is significantly 

more  sensitive  to  the  longer  wavelength  components  of  the  UV  light  generated  by  the  flame.  This  longer 
wavelength light does penetrate the fog of oil quite well and therefore the SiC based sensor is significantly more 
sensitive  to  the  presence  of  flame.  A  flame  sensor  utilizing  the  SiC  photodiode  is  being  produced  by  BHGE 
Reuter-Stokes, and has been successfully operated on a number of GE gas turbine installations. 

SENSOR 

 

Figure 1 is a block diagram of the SiC Flame Sensor. The sensor has a sapphire window that is transparent 

to UV  light and can  withstand the compressor discharge temperature and pressure.  It has a lens inside that 
focuses the light on a silicon carbide photodiode in a hermetic package.  The photodiode is wired to a MOSFET 
input  amplifier.    The  amplifier  has  a  high  initial  gain,  which  automatically  shifts  to  a  lower  gain  in  order  to 
accommodate a  wide range of input light level  without saturating. The sensor regulates the supply current  in 
proportion to the amount of UV light present. Both power and signal are transmitted on the same two wires.  The 
sensor can be powered from a dc voltage between 12 and 30 volts.  The whole transducer is sealed and filled 
with dry argon. 

 
 

Figure 1 

BLACK -

RED +

GREEN

External Signal 
Conditioning
4-20mA

SiC FLAME TRACKER 

TM

 WIRING DIAGRAM

A

B

C

D

E

4-20mA

BARE 

WIRE

 

Summary of Contents for 07482SOCNL44819P01

Page 1: ...S FS 9006 GE 07482SOCNL44819P01 Operation and Maintenance Manual FS 9006OM Rev K November 2017 www gemeasurement com A trademark of Baker Hughes a GE company LLC 2017 Baker Hughes a GE company All rights reserved Technical content subject to change without notice ...

Page 2: ...NG AS WELL AS WARRANTIES IMPLIED FROM A COURSE OF PERFORMANCE OR COURSE OF DEALING THE MATERIALS IN THIS MANUAL WILL BE ERROR FREE OR THAT THE MATERIALS IN THIS MANUAL WILL BE COMPLETE ACCURATE OR TIMELY NO ADVICE OR INFORMATION OBTAINED BY YOU FROM REUTER STOKES LLC OR THROUGH THE CONTENT AND MATERIAL IN THIS MANUAL SHALL CREATE ANY WARRANTY OF ANY KIND REUTER STOKES LLC DOES NOT MAKE ANY WARRANT...

Page 3: ...94 WRTR L Lombardo REV E DATE 06 25 10 ECN 40293054 WRTR R Martin REV F DATE 04 24 13 ECN 77469075 WRTR J Hashmi REV G DATE 12 18 15 ECN 500000157848 WRTR J Hashmi REV H DATE 02 22 16 ECN 500000204318 WRTR J Hashmi REV J DATE 08 24 17 ECN 500000263564 WRTR J Hashmi REV K DATE 11 03 17 ECN 500000272164 WRTR J Hashmi ...

Page 4: ... Ta 235ºC T2 with cooling coil South Korea KTL hazardous area mark Customs Union hazardous area mark China hazardous area mark Brazil INMETRO hazardous area mark India hazardous area approved Taiwan hazardous area mark These certifications are based on the use of approved interconnecting cables only Currently available approved interconnecting cables are BHGE Reuter Stokes RS E2 0285PXXX and GE 36...

Page 5: ... by wrenching on the body Always use the 1 3 8 inch mounting nut Wrenching on the body may breach the seal Breaching the seal of the sensor will cause loss of the inert fill gas and render the sensor unusable Do not install a sensor that has a cracked window damaged threads or one that has been disassembled Do not install or remove the flame sensor from the sight tube with the cooling coils attach...

Page 6: ...NTERCONNECTING CABLE RS E2 0279PXXX OR 362A1053PXXX 2 1 2 REFERENCE 3 1 3 GENERAL DESCRIPTION 4 2 SENSOR 4 3 INSTALLATION 5 3 1 MECHANICAL 5 3 2 ELECTRICAL 7 3 3 CONNECTOR PINOUT 8 3 4 SENSOR CHECKOUT 8 3 5 CONTROLLER SETUP 8 4 Maintenance 9 4 1 WARNING 9 4 2 CAUTION 9 5 TROUBLESHOOTING 9 5 1 WARNING 9 5 2 CAUTION 9 ...

Page 7: ...es III size 15 5 pin Sensor Silicon Carbide photodiode Window Sapphire Operating Sensitivity 5 mA 1x1010 photons in2 sec 310 nm Output 4 20 mA dc Max 21 mA Response Time 25 milliseconds Power Requirements 12 30 vdc 100 mA Temperature Range ambient 40 F to 302 F 40 C to 150 C 455 F 235 C with specified air cooling Relative Humidity Process Pressure Vibration 100 Non Condensing 400 psig 2 8 Mpa 0 01...

Page 8: ...ge 1 02 mm 19 strand nickel plated copper Insulation Teflon PTFE Shield Jacket 36 gauge 0 127 mm nickel plated copper braid Extruded PFA Armor Stainless steel braid Connector MIL C 38999 series III shell size 15 5 16 pins only 3 pins are used Operating Voltage max 300 vrms Temperature max 482 F 250 C ...

Page 9: ...FS 9006OM REV K 3 1 2 REFERENCE ...

Page 10: ...on a number of GE gas turbine installations 2 SENSOR Figure 1 is a block diagram of the SiC Flame Sensor The sensor has a sapphire window that is transparent to UV light and can withstand the compressor discharge temperature and pressure It has a lens inside that focuses the light on a silicon carbide photodiode in a hermetic package The photodiode is wired to a MOSFET input amplifier The amplifie...

Page 11: ... 1 5 m sec or greater at a temperature of 50 F 10 C or less above outside ambient Under these conditions the sensors will operate at outside ambient temperatures up to 140 F 60 C Air cooling with pressurized air requires the use of Air Cooling Can BHGE Reuter Stokes Part Number RS E2 0259 GE Part Number 07482SOCNL44821P01 The Air Cooing Can is installed as shown in the following drawing The Air Co...

Page 12: ...applied below the 2nd thread If Never Seez is applied to the face of the sight tube upon heating it can fog the window of the Flame Sensor 3 Inspect the window and clean with Isopropanol soaked swab If required install hand tight 3 4 Full turns tighten with a wrench approximately 2 5 turns Tighten further as required to align keys on cable connector with slots in sensor connector 4 Slide cooling c...

Page 13: ...her or to earth ground at any location The inner shields should be individually jumpered through all junction boxes and connected to the proper ground terminal at the Controller The polarity of the cable is red wire is positive and black wire is negative The polarity is shown in the drawings Reverse polarity will not damage the sensor Signal cable from the junction box to the Controller should be ...

Page 14: ... see zero flame intensity signal and with a flashlight to see a positive reading With no light the reading should be 3 7 to 4 1 milliamps while with most flashlights the reading should be above 8 milliamps An LED flashlight may not work for this application Variations in flashlight type strength or battery voltage may cause variations in signal output The flashlight test is intended as a field tes...

Page 15: ...eize compound should be applied to the mounting thread prior to reinstallation of the sensor 5 TROUBLESHOOTING 5 1 WARNING Do not disconnect connector while circuit is energized or live unless area is known to be non hazardous 5 2 CAUTION The operating temperature range of the Flame Sensor is 40 C to 150 C Do not attempt to work on the Flame Sensor or the cable until they have cooled to a safe han...

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