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Model9060ZManual
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4.8CONNECTINGTHEAUXILIARYTHERMOCOUPLE(OPTIONAL)
For 9060H heated probes, the auxiliary thermocouple must be a separate TC with the junction
isolatedfromearth,mountedneartoandupstreamoftheoxygenprobe.ItcanbeeitheraK,J,RorS
typethermocouple.Itisoptional.Iftheauxiliarytemperatureorcombustionefficiencyisnottobe
displayedortransmitted,thenanauxiliarythermocoupleisnotnecessary.Thethermocoupleshould
beconnectedtoterminals7&8.Theseterminalswillnotbeavailableforanauxiliarythermocoupleif
asecondprobehasbeeninstalled.
4.9CONNECTINGTHEOUTPUTCHANNELS
The two 4 to 20 mA DC output channels are capable of driving into a 1000Ω load. The output
terminalsare12&13forchannel1,and14&15forchannel2.
4.10CONNECTINGTHEALARMS
A common alarm, which should be connected for all installations initiates on alarm functions
described below. Three additional alarm relays are available for selectable functions as listed in
chapter9.2.Eachrelayhasnormallyopencontacts.Thecontactswillopeninalarmcondition.Relays
areconnectedasfollows:
RelayCommonAlarm TerminalNumbers26&27
Alarm1 28&29
Alarm2 30&31
Alarm3 32&33
CommonAlarmsAllofthefollowingconditionswillcauseacommonalarm‐
Probe1(2)HeaterFail RefAirPumpFail Heater1(2)SSRFailure
Probe1(2)HighImpedance ADCCalibrationFail HeaterSSRLeakage
Probe1(2)TCOpenCircuit AlarmLogFail Probe1(2)FilterBlocked
AuxTCOpenCircuit Output1(2)Failure Gas1(2)CalibrationError
BBRAMFail
The watchdog timer is a special alarm. There will not be an alarm message displayed, but the
transmitterwillreset.
Alarmscanbeacceptedbypressingthealarmbutton(viewingthealarmmessages).
Alarmrelay2to4Selectanyoneorallofthefollowingforeachrelay.Referchapter9.
Inaddition,anyoftheselectionsthatareremo
vedfromthecommonalarmrelaycanbeaddedto
relaystwotofour.
Highoxygen1(2)
Lowoxygen1(2)
Verylowoxygen1(2)
Oxygendeviation
Probe1(2)temperaturelow
Calibrationcheck1(2)inprogress
Probe1(2)purgeinprogress
4.11CONNECTINGTHEAUTOMATICPURGEANDCALIBRATIONCHECKSYSTEM
CAUTION
The purge and calibration solenoid valves are supplied with mains voltage. This supply has
electricalshockdangertomaintenancepersonnel.Alwaysisolatethetransmitterbeforeworking
withthepurgeandcalibrationsolenoidvalves.