Siemens SITRANS F Operating Instructions Manual page 183

Section 3 1010PFM-3G
The 991TW insert sensors are designed to be used in pipes equipped with Thermowells. These are
spring-loaded, 1/4" diameter sensors with 1/2" NPT integral connection heads, available in several
lengths to accommodate a range of pipe sizes. Thermowells for new installations are available from
Alloy Engineering Company in Bridgeport, Connecticut.
Both types of temperature sensors are connected to the energy flowmeter via 1012EC series cables.
These four wire cables, associated drive and sensing circuits assure that measurement accuracy at
the RTD is independent of cable length.
WARNING: Turn meter power OFF before connecting cables to Temperature Sensor Supply/
Return inputs.
Temperature Sensor Inputs
Temperature Sensor Inputs
(Supply/Return)
(Supply /Return)
1010EP Temperature Sensor Inputs
Temperature Sensor Inputs
Temperature Sensor Inputs
(Supply /Return)
(Supply/Return)
1010EWDP Temperature Sensor Inputs
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