Emerson 644 Specifications Page 127

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117
Reference Manual
00809-0200-4728, Rev RA
Appendix A: Specifications and Reference Data
April 2015
Specifications and Reference Data
A.4.1 Configuration
Transmitter configuration
The transmitter is available with standard configuration settings for HART. The configuration
settings may be changed in the field with DeltaV
, with AMS
®
Device Manager, or with any Field
Communicator.
Standard HART configuration
Unless specified, the transmitter will be shipped as follows:
A.4.2 Tagging
Hardware tag
13 characters total
Tags are adhesive or metal labels
Tag is permanently attached to transmitter
Software tag
HART Revision 5
A HART Revision 5 Transmitter can store up to 8 characters for the HART software tag and
defaults to the first 8 characters of the hardware tag.
HART Revision 7
A HART Revision 7 Transmitter can store the same 8 character tag as the Revision 5 but has a
additional and separate long software tag that can be configured for up to 32 characters. The
long software tag is available when option code HR7 is ordered.
A.4.3 Considerations
Special mounting considerations
See “Mounting Kits for 644 Head Mount” on page 105 for the special hardware that is available
to:
Mount a 644H to a DIN rail.
Retrofit a new 644H to replace an existing 644H transmitter in an existing threaded sensor
connection head.
Sensor Type RTD, Pt 100 (α=0.00385, 4-wire)
4 mA Value 0 °C
20 mA Value 100 °C
Output Linear with temperature
Saturation Levels 3.9 / 20.5 mA
Damping 5 sec.
Line Voltage Filter 50 Hz
Alarm High (21.75 mA)
LCD (when installed) Engineering Units and mA
Ta g See “Tagging” on page 117.
HART Revision 5
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