GE Baker Hughes Reuter-Stokes Flame Tracker... User manual

Flame Tracker*
SiC Two Wire Flame Sensor
Reuter-Stokes
Model RS-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.

FS-9006OM –REV K
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NOTICE
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Copyright © 2017 Baker Hughes, a GE company.
Contains Baker Hughes, a GE company Confidential Information.

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Revision History
REV#: G
DATE:
10/2006
ECN#:
7233394
WRTR:
K. Schmidt
REV#: D
DATE:
10/12/2009
ECN#:
7233394
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

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Certification Information
ATTENTION! The RS-FS-9006 Flame Tracker sensor complies with the following standards:
ETL
Control Number 9900287
Class 1, Div. 2, Grp A,B,C,D T3
Class 1, Zone 2 AEx nA IIC T3 Gc
ATEX / IECEx
Temperature Range
-40ºC ≤ Ta≤ 150ºC; T3
-40ºC ≤ 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 362A1053PXXX. See Section 1.1.2
for details.
0359 II 3 G
Ex nA IIC T3 Gc

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WARNING
Do not disconnect connector while circuit is energized (or live), unless area is known to be non-hazardous.
Certifications are based on the use of approved cables only. Currently available approved cables are BHGE Reuter-
Stokes RS-E2-0279 and GE AE 07482SOCNL44820.
Do not attempt to disassemble the sensor. Sensors are not repairable. Breaching the seal of the sensor will cause
loss of the inert fill gas and render the sensor unusable.
Do not remove the sensor 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 attached to the flame sensor.
Sensor disassembly and malfunction may occur, possibly resulting in a false Flame On signal.
CAUTION
The operating temperature range of the Flame Sensor is -40°C to 150°C. Do not attempt to work on the Flame
Sensor until it has reached a safe handling temperature.

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TABLE OF CONTENTS
1INTRODUCTION ..................................................................................................................................................1
1.1 SPECIFICATIONS..............................................................................................................................................1
1.1.1 Flame Tracker™ -RS-FS-9006....................................................................................................................1
1.1.2 INTERCONNECTING CABLE RS-E2-0279PXXX OR 362A1053PXXX.....................................................2
1.2 REFERENCE......................................................................................................................................................3
1.3 GENERAL DESCRIPTION.................................................................................................................................4
2SENSOR...............................................................................................................................................................4
3INSTALLATION ....................................................................................................................................................5
3.1 MECHANICAL....................................................................................................................................................5
3.2 ELECTRICAL......................................................................................................................................................7
3.3 CONNECTOR PINOUT......................................................................................................................................8
3.4 SENSOR CHECKOUT .......................................................................................................................................8
3.5 CONTROLLER SETUP......................................................................................................................................8
4Maintenance .........................................................................................................................................................9
4.1 WARNING ..........................................................................................................................................................9
4.2 CAUTION............................................................................................................................................................9
5TROUBLESHOOTING..........................................................................................................................................9
5.1 WARNING ..........................................................................................................................................................9
5.2 CAUTION............................................................................................................................................................9

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1 INTRODUCTION
1.1 SPECIFICATIONS
1.1.1 Flame Tracker™ -RS-FS-9006
Mechanical
Body Mount:
AISI316 Stainless Steel
Housing:
AISI304 Stainless Steel (sealed and Argon filled)
Connector
Process:
3/4” NPT female
Electrical:
MIL-C-38999 Series 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)
0.0125 inches DA 10 –88 Hz
5 G continuous 88 –1200 Hz

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1.1.2 INTERCONNECTING CABLE RS-E2-0279PXXX OR 362A1053PXXX
Mechanical
Wire
18 gauge (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)

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1.2 REFERENCE

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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 water. 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.
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 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

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3 INSTALLATION
3.1 MECHANICAL
The maximum operating temperature for the flame sensor is 302° F (150° C). If the peak operating
temperature at the location of the sensor exceeds this then cooling will be required. There are two methods
available for cooling: air-cooling with ambient air, and air-cooling with pressurized air.
Air-cooling with ambient air can be used in installations where the enclosure is cooled with forced air. This
would be typical of LM2500 and LM6000 aircraft engine applications. The air velocity at the sensor must be 5
ft./sec (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-Cooling Can requires 25 psi (170 kPa) minimum at 120° F (49° C) maximum. Under these
conditions the sensors will operate at ambient temperatures up to 302° F (150° C)
Do not complete step 2 in the “FLAME SENSOR AND WATER COOLING JACKET INSTALLATION
INSTRUCTIONS” on the next page. Leave the sensors installed hand tight until after the sensor checkout
described in Section 3.3.

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1. Ensure that the cooling coil is not attached to the flame sensor during installation or removal
of the sensor. The cooling coil can apply an unwanted torque and cause disassembly and
malfunction of the flame sensor.
2. Apply a small amount of Never-Seez PN NG-165 to threads of sight tube prior to installation.
Be sure the Never-Seez applied to the sight tube is minimal and only 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 coil over Flame Sensor major diameter and orient tubes on the coil as required
for assembly. Tighten clamps 50-60 in. lbs. Install Swagelok fittings re-torque clamps to 50-
60 in. lbs. after first shut down

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3.2 ELECTRICAL
The sensors are connected to the turbine junction box with a connector cable as specified in Section 1.1. All
wiring must be in grounded conduit or armored. The green wire must be connected to earth ground at the junction
box. Do not connect the shields over the twisted pair signal leads to each other 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 18 gauge (1.02 mm) twisted shielded pair. The extension cable from the junction box
to the Controller is the customer’s responsibility.

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The Flame Tracker™ is connected to the controller as a typical two wire current transmitter. It can be operated
from any well-filtered dc supply from 12 volts to 30 volts. The supply should be capable of supplying 100
milliamps. The power supply must be protected to prevent the supply voltage from exceeding 30 volts in normal
use and more than 42 volts under transient conditions. The sensor is protected against reverse polarity. The
maximum value for the sense resistor plus the wire resistance is dependent on the supply voltage. At 24 volts
this value is 560 ohms. Resistance values for other voltages can be determined from the chart in Figure 2.
3.3 CONNECTOR PINOUT
The pinout for the power connector is as follows:
CONNECTOR LEGEND
PIN
CIRCUIT
DESIGNATION
WIRE COLOR for
RS-E2-0279PXXX cable
A
-
Black
B
+
Red
C
Ground
Green
D
Not Used
E
Not Used
3.4 SENSOR CHECKOUT
Disconnect the sensors and unscrew them from the turbine. Plug the sensor cables back in to each of the
sensors. Apply power to the sensors. Check the current values at the controller for each of the sensors. The
sensors are sensitive to light, and may have some reading, depending on the ambient light level. Test each
sensor by covering the port to 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 test for general
functionality only and is not a controlled or quantitative test. If a sensor is outside these rough check limits see
Section 5.0.
Disconnect the sensor cables, and reinstall the sensors according to the instruction in Section 3.1. At this time
step 2 of Section 3.1 should be completed and the sensor cables reconnected. Make sure that the sapphire
window is clean; if it needs cleaning, do this according to the maintenance instructions in Section 4.0. Check
that all sensors are reading between 3.7 to 4.1 milliamps.
3.5 CONTROLLER SETUP
The Flame Sensor provides a minimum output of 5 milliamps when exposed to the minimum flame intensity
specified in GE specification number 362A1052. The set point for flame off should be set to 6.25%, which is
equal to 5 milliamps. The set point for flame on should be 10% of full scale, which equals 5.6 milliamps. If the
intensity levels are too low for these settings there may be other problems. Low intensity levels may be a sign
of other problems. Refer to Section 5.0 - Troubleshooting.

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4 MAINTENANCE
4.1 WARNING
Do not disconnect connector while circuit is energized (or live), unless area is known to be non-hazardous.
4.2 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 handling temperature.
The Flame Sensor output will deteriorate as the lens becomes dirty. It is recommended, when initially installed,
that the signal level be recorded during normal operation. During subsequent running, the signal level should
be compared with the initial values. If a significant reduction in the signal level is noticed, then it is recommended
that the lens be cleaned at the next opportunity (with the turbine shut down and cold). Clean the lens with
isopropyl alcohol or other residue free solvent compatible with Sapphire. In order to reduce the risk of galling,
an anti-seize 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 handling temperature.
PROBLEM
CAUSE
SOLUTION
No current flows
Reversed polarity
Change polarity
Low sensitivity during
checkout or operation
Dirty lens
Grounded cable
Clean lens (Section 4.0)
Check cable for grounds
Low flame intensity signal
during operation
Misalignment of the sensor
mount
Check the squareness of all
flanges and pipes of the sensor
mount. Verify that the senor has a
clear view of the flame.
Obstructions in the line of
sight
Look for washers, or valves that
may restrict the diameter of the
sight tube.
Condensation on the lens
Over cooling can cause moisture
to condense on the lens and
reduce the signal. Reduce the
cooling until the condensation
clears up and the signal returns to
normal.