ATI Technologies B12-71 User manual

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O&MManual
B12-71
2-Wire Hydrogen
GasTransmitter
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Model B12-71 WetHydrogenGasTransmitter
O&M Manual-2 -
Rev-D, 7/15
TABLEOFCONTENTS
TABLEOF CONTENTS...................................................................................................................2
INTRODUCTION..............................................................................................................................4
SPECIFICATIONS............................................................................................................................8
INSTALLATION...............................................................................................................................9
MECHANICAL MOUNTING..........................................................................................................9
ELECTRICALCONNECTION........................................................................................................12
HYDROGEN SENSORASSEMBLY..............................................................................................14
OPERATION..................................................................................................................................16
TRANSMITTER TEST POINTS..................................................................................................16
DIGITAL DISPLAYOPTION.......................................................................................................17
CALIBRATION...............................................................................................................................18
ZERO ADJUSTMENT.................................................................................................................18
SPAN ADJUSTMENT.................................................................................................................18
MAINTENANCE.............................................................................................................................19
SPAREPARTSLIST.....................................................................................................................20

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-3 -
Rev-D, 7/15
TABLEOFFIGURES
Figure 1 -Typical %Version Insertion SystemInsallation (ATI-0156).................................................. 4
Figure 2 -TypicalPPMRemote Version Insertion SystemInstallation (ATI-0165).............................. 5
Figure 3 -TypicalPPMStandardVersion Insertion SystemInstallation (ATI-0166)........................... 6
Figure 4 -TypicalFlowThrough SystemInstallation(ATI-0223)........................................................... 7
Figure 5 -Nema-4XEnclosure DimforRemote PPM& %Versions (ATI-083)..................................... 9
Figure 6 -Nema-4XEnclosure DimforStd. PPMVersions (ATI-0198)............................................... 10
Figure 7 -Enplosion-ProofTransmitterEnclosureDimensions (ATI-0226)....................................... 10
Figure 8 -WetHydrogenGas SensorDimensionsall Versions (ATI-0276)........................................ 11
Figure 9 -Electrical Connections, Nema-4Enclosure (ATI-0288)....................................................... 12
Figure 10 -Electrical Connections, Explosion-ProofEnclosure (ATI-0289)....................................... 13
Figure 11 -%HydrogenGas SensorAssembly(ATI-0290).................................................................. 14
Figure 12 -TransmitterControls & TestPoints (ATI-0291).................................................................. 17

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-4 -
Rev-D, 7/15
INTRODUCTION
The SeriesB12-71isatwo-wiretransmitterdesignedtoworkwithATI'sModel71Wet
Hydrogen GasSensor.It provide alowpowermethod ofmonitoringhydrogen inmoisturesaturated gas
streams.
GAS CODENO. STD. RANGE
MIN. RANGEMAX. RANGE
HYDROGEN 71 4% 0-1% 0-10%
HYDROGEN 71 2000PPM 0-500 PPM 0-5000 PPM
Figure1 showsa typicalB12-71 Hydrogen monitoringsystemfora vent orduct system.
Figure 1 -Typical%Version Insertion SystemInsallation (ATI-0156)

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-5 -
Rev-D, 7/15
Figure 2 -TypicalPPMRemote Version Insertion SystemInstallation (ATI-0165)

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-6 -
Rev-D, 7/15
Figure 3 -TypicalPPMStandardVersion Insertion SystemInstallation (ATI-0166)

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-7 -
Rev-D, 7/15
Figure4showsatypicalflowthrough B12-71gasmonitoring system.The sensorisshownwith
the flowcell inplace. Ifused ininsertion applications, the flowcell must be removed.
Figure 4 -TypicalFlow Through SystemInstallation(ATI-0223)

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-8 -
Rev-D, 7/15
SPECIFICATIONS
Type: Wet Hydrogen Gas
Range: 0-1%Min., 0-10%Max.
0-500 PPMMin., 0-5000PPMMax.
Accuracy: ±0.05 %at constant temperature
Electronic Repeatability: ±1%ofspan
Electronic Linearity: ±0.5%ofspan
Output: Loop-powered 4-20 mA, 675 ohmsmaximumat 24 VDC
Power: 12-30 VDC
Enclosure: NEMA4Xpolystyrene
Controls: Zeroand span potentiometers mounted on transmittercircuit board
Operating Temperature: 0ºto+55ºC
Sensor: Model71Hydrogen Sensor
SampleFlowRequirements (Whenusing Flowcell): 500-2000 cc/min.
Weight: 0.25 Lbs(0.12Kg.)

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-9 -
Rev-D, 7/15
INSTALLATION
Installation ofaB12 Transmitterrequiresmechanicallymounting the enclosureand connecting
DC powerto the system.Inaddition, the flowcell assemblyforthe sensormustbe connectedto sample
inlet andoutlet tubing.Hosebarbsaresupplied ontheflowcell,and theinlet and outlet portsaresuitable
fora varietyoffitting with 1/8"NPTconnections.
MECHANICALMOUNTING
The NEMA4Xtransmitterenclosureissurfacemounted usingscrewsinserted throughthe blind
mounting holesaccessiblebyremovingthetransmittercover.Figure5showsthe centertocenter
mounting holedimensionsforthisenclosure. Ifrigidconduitisto be used forwiringthetransmitter,the
transmittercan be supported directlyfromthe conduitsystemwithout the useofmountingscrews.The
transmitterweighsonly4ounces,sonormalconduitsupportswillbe adequate. If conduitistobe used,
be surethat theconduitissealedat the point wereitenters thetransmitter.Otherwise, condensationin
the conduit systemcan drain into the transmittercausing failure ofthe electroniccircuit board.
Figure 5 -Nema-4XEnclosure DimforRemote PPM & %Versions (ATI-083)

Model B12-71 WetHydrogenGasTransmitter
O&M Manual-10 -
Rev-D, 7/15
Figure 6 -Nema-4XEnclosure DimforStd. PPMVersions (ATI-0198)
Explosion-prooftransmitterenclosuresshouldbe supportedbytheconduitsystemand the
installation should include properconduitsealsasrequired bylocalelectricalcode.
Figure 7 -Enplosion-ProofTransmitterEnclosureDimensions (ATI-0226)