Emerson Rosemount 644R Reference Manual

Reference Manual
00809-0100-4728, Rev HA
December 2002
A-7
Models 644H and 644R
DIMENSIONAL DRAWINGS
Model 644R (Rail Mount) Model 644H (DIN A Head Mount)
Shown with Standard Compression Screw Terminals
Shown with WAGO
®
Spring Clamp Terminals
Threaded-Sensor Universal Head
(Option code J5 or J6)
Integral DIN Style Sensor
Connection Head
Shown with LCD Display
Note: A “U” Bolt is shipped with each universal head unless assembly
option X1, X2, or X3 is ordered. Since the head is integrally mounted to
the sensor, it may not need to be used.
Note: The DIN Style Integral sensor connection head is only
available through Volume 2 of the Rosemount Temperature Sensors
and Accessories Product Data Sheet (document number
00810-0101-2654).
Dimensions are in millimeters (inches)
36
(1.4)
104
(4.1)
82
(3.2)
Sensor Terminals
Power Terminals
644-1105E01A. 1101A01A
644-1360A02A
Failure Mode
Switch
Standard Sensor
Terminals
Communication Terminals
60 (2.4)
33 (1.3)
Power Terminals
Meter Connector
33 (1.30)
24 (1.0)
644-1360B02A
33
(1.3)
60 (2.4)
34 (1.33)
WAGO Spring Clamp
Sensor Terminals
24 (1.0)
Power Terminals
Communication Terminals
Failure Mode
Switch
Meter Connector
95 (3.74)
96 (3.76)
112 (4.41)
103 (4.03) with LCD Display
Meter Cover
SST “U” Bolt
Mounting,
2-inch Pipe
75
(2.93
)
Label
Standard
Cover
104 (4.09)
128 (5.04) with LCD Display
100
(3.93)
644-4420A02A, 4410A03A
78 (3.07)

Emerson Rosemount 644R Specifications

General

Type	Temperature Transmitter
Measurement Type	Temperature
HART Protocol	HART 7
Display	Optional LCD
Input	RTD, Thermocouple, Ohms, mV
Sensor Type	RTD, Thermocouple
Output	4-20 mA HART
Power Supply	10.5 to 42 VDC
Temperature Range	-40 to 85 °C
Process Temperature Range	-40°C to 85°C (-40°F to 185°F)
Enclosure	Aluminum
Enclosure Rating	IP66
Mounting	Field
Stability	±0.1% of URL per year