Monitoring of Temperature probes are comes in feature called ASM(Advance System Management) in OMCI. But current version of OMCI doesn't support ASM feature in SNMP interface. You can use only WMI interface, following is the wmic command to get temperature probe instances.

wmic /namespace:\\root\dcim\sysman path DCIM_NumericSensor Where SensorType="2" get BaseUnits, CreationClassName,CurrentReading,CurrentState,DeviceID,ElementName,EnabledDefault,EnabledState,HealthState, LowerThresholdCritical,LowerThresholdNonCritical,OperationalStatus,PossibleStates,RateUnits, RequestedState, SensorType,SystemCreationClassName,SystemName,TransitioningToState,UnitModifier,UpperThresholdCritical, UpperThresholdNonCritical,ValueFormulation,SupportedThresholds,SettableThresholds

OMCI Install 10892.mib file in the Install location(By default, C:\Program Files\Dell\SysMgt\omsa\config.) if you select Custom installation/EnableSNMP during installation. Supported OIDs can be find using SNMP Reference Guide located at the following link.

http://www.dell.com/support/Manuals/us/en/19/Product/dell-opnmang-clnt-instr-v8.2