Honeywell XNX - 8.1.2 Zero and Span Calibration for XNX EC Sensors; 8.1.3 Zero and Span Calibration of XNX EC Hydrogen Sulfide (H₂S) Sensors

XNX Universal Transmitter
Section 2 - Installation and Operation
47
theXNXTransmitterandOptimaPlusorExcelis100feet(33
meters)using0�75mm
2
(18AWG)wireminimum�
Note: Asecond,black-handledscrewdriverisincludedforuseon
terminalblocks2and4.Thistoolissmallerthanthemagneticwand
andisdesignedtofitintotheterminalconnectionsonTB2andTB4.
TheSearchpointOptimaPlusorSearchlineExcelcanbe
suppliedineitherSinkorSourcemodeoperationandistypically
labeledonthewhitewireexitingtheSearchpointOptimaPlusor
SearchlineExcel�UsethetableinFigure50tosetS3andS4to
thesameoutputtypethatappearsonthewiretagoftheIR
device�
FormoreinformationseetheSearchpointOptimaPlusOperating
Instructions(2104M0508)ortheSearchlineExcelTechnical
Manual(2104M0506)�
Connecting Generic mA Devices
UsethefollowingschematicstosetswitchesS3andS4They
must besettothesameoutputtype(whichappearsonthewire
tagofthemAdevice)�
TheIRpersonalitytypeprovidesforagenericmAinputunder
sensortypeconguration�Thetransmittercanbeusedto
convertthemAinputtobereadoverHARToroptionalModbus
orFoundationFieldbusprotocolsandsetoptionalrelays(if
equipped)�AdditionalcongurationofgastypeandunitID
forreportingisrequired(seeGasSelection)�ForGenericmA
devices,inputvaluesbelow3mAwillgenerateFault155�
XNX
+IR
Signal
-IR
R
L
1-7
1-9
1-8
+V
+mA
-V
mA Device
Current
Flow
24V 7W Max
XNX S3 and S4 must be in the UP position
Set mA Device and XNX to the same output type.
Figure 49. XNX mA input sink conguration
XNX
+IR
Signal
-IR
R
L
1-7
1-9
1-8
+V
-mA
-V
mA Device
Current
Flow
XNX S3 and S4 must be in the DOWN position
Set mA Device and XNX to the same output type.
Figure 50. XNX mA input source conguration
