Reference Manual
00809-0400-4728, Rev AA
June 2011
A-13
Rosemount 644
Assemble To Options
Standard Standard
XA Sensor Specified Separately and Assembled To Transmitter ● ● ● –★
Head Rail
A F W A
Enclosure Options
Standard Standard
J5(4)(5) Universal Head (junction box), aluminum alloy with 50.8 mm (2-in.) SST pipe bracket
(M20 entries)
● ● ● –★
J6(4) Universal Head (junction box), aluminum alloy with 50.8 mm (2-in.) SST pipe bracket
(1/2–14 NPT entries)
● ● ● –★
J7(4)(5) Universal Head (junction box), cast SST with 50.8 mm (2-in.) SST pipe bracket (M20
entries)
● ● ● –★
J8(4) Universal Head (junction box), cast SST with 50.8 mm (2-in.) SST pipe bracket (1/2–
14 NPT entries)
● ● ● –★
Expanded
S1 Connection Head, Polished Stainless Steel (1/2–14 NPT entries) ● ● ● –
S2 Connection Head, Polished Stainless Steel (1/2–14 NPSM entries) ● ● ● –
S3 Connection Head, Polished Stainless Steel (M20 x 1.5 conduit and entries) ● ● ● –
S4 Connection Head, Polished Stainless Steel (M20 x 1.5 conduit entries, M24 x 1.5
head entry)
● ● ● –
Display
Standard Standard
M5 LCD Display ● ● ● –★
Expanded
M6 LCD Display with Polycarbonate Meter Face ● ● ● –
Software Configuration
Standard Standard
C1 Custom Configuration of Date, Descriptor and Message (Requires CDS with order) ● ● ● ● ★
Alarm Level Configuration
Standard Standard
A1 NAMUR alarm and saturation levels, high alarm ●– – ●★
CN NAMUR alarm and saturation levels, low alarm ●– – ●★
C8 Low Alarm (Standard Rosemount Alarm and Saturation Values) ●– – ●★
Line Filter
Standard Standard
F6 60 Hz Line Voltage Filter ● ● ● ● ★
Sensor Trim
Standard Standard
C2 Transmitter-Sensor Matching - Trim to Specific Rosemount RTD Calibration
Schedule (CVD constants)
● ● ● ● ★
5-Point Calibration Option
Standard Standard
C4 5-point calibration. Use option code Q4 to generate a calibration certificate ● ● ● ● ★
Calibration Certificate
Standard Standard
Q4 Calibration certificate. 3-Point calibration with certificate ● ● ● ● ★
External Ground
Standard Standard
G1 External ground lug assembly (see “External Ground Screw Assembly” on
page A-15)
● ● ●–★
Table A-3. Rosemount 644 Smart Temperature Transmitter Ordering Information
★ The Standard offering represents the most common models and options. These options should be selected for best delivery.
__The Expanded offering is manufactured after receipt of order and is subject to additional delivery lead time.
● = Available
– = Not Available