Emerson Rosemount 644h Manual Pagina 62

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OLD
OLD TRANSMITTER
Transmitter Design
Sensor Wiring Diagrams
Models 644H and 244EH Models 644R and 244ER
Models 644 and 244E
* Rosemount Inc. provides 4-wire sensors for all single element RTDs. You can use these
RTDs in 3-wire configurations by leaving the unneeded leads disconnected and insulated
with electrical tape.
** The transmitters must be configured for a 3-wire RTD in order to recognize an RTD with a
compensation loop.
Two Mounting Holes
644-01260B01B, 1105E01B,
1101A01A
644-0000B01B
12341234 12 34 12
3
41234
2-wire
RTD
and
3-wire
RTD
and
4-wire
RTD
and
T/C and
mV
RTD with
Comp.
Loop
1
***
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