Rosemount 644 Specifications
Product Data Sheet
00813-0100-4728, Rev UE
February 2019
Rosemount™644 Temperature Transmitter
The most versatile temperature transmitter
Reduce complexity and simplify the day-to-day operations of your diverse temperature applications with
the versatile Rosemount™ 644 family of temperature transmitters. Make better decisions for your process
with the new and easy to use Rosemount 644 Transmitter capabilities including: diagnostics, safety
certification, integral transient protection, and display options.
February 2019
Features and benefits
Fulfill your needs within one model family with a customizable transmitter design
■
DIN head mount, field mount, and rail mount form factors
■
4–20 mA/HART® with Selectable Revisions, FOUNDATION™ Fieldbus or PROFIBUS® PA Protocol support
■
SIL3 Capable: IEC 61508 certified by an accredited third party agency for use in safety instrumented systems up to SIL 3
[minimum requirement of single use (1oo1) for SIL 2 and redundant use (1oo2) for SIL 3]
■
Enhanced display with Local Operator Interface (LOI)
■
LCD display
■
Integral transient protection
■
Enhanced accuracy and stability
■
Transmitter-sensor matching with Callendar-Van Dusen constants
■
Variety of enclosures
Contents
Features and benefits........................................................................................................................................................................ 2
Ordering Information........................................................................................................................................................................ 5
Specifications ................................................................................................................................................................................. 15
Dimensional drawings..................................................................................................................................................................... 29
Specifications and reference data for Rosemount 644 HART (Device Revision 7 or Previous)........................................................... 42
Product Certifications......................................................................................................................................................................50
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February 2019
Rosemount 644 selection guide
Rosemount 644 HART Transmitters
HART head mount and field mount
■
Single or dual sensor inputs for RTD, thermocouple, mV, and Ohm
■
DIN A Head mount and field mount transmitters
■
SIL3 Capable: IEC 61508 certified by an accredited third party agency for use in safety instrumented systems up to SIL 3
(minimum requirement of single use [1oo1] for SIL 2 and redundant use [1oo2] for SIL 3)
■
LCD display
■
Enhanced display with LOI
■
Integral transient protection
■
Diagnostic suite
■
Enhanced accuracy and stability
■
Transmitter–sensor matching with Callendar-Van Dusen constants
HART rail mount
■
Single sensor input for RTD, thermocouple, mV, and Ohm
■
Custom alarm and saturation levels
■
Transmitter–sensor matching with Callendar-Van Dusen constants
■
Hardware alarm switch
3
Rosemount 644 FOUNDATION Fieldbus
■
Single sensor input for RTD, thermocouple, mV, and Ohm
■
DIN A head mount transmitter
■
Standard function blocks: two analog inputs, one PID, and one backup Link Active Scheduler (LAS)
■
LCD display
■
ITK 5.01 compliant
■
Transmitter–sensor matching with Callendar-Van Dusen constants
■
Integral transient protection
February 2019
Rosemount 644 PROFIBUS PA
■
Single sensor input for RTD, thermocouple, mV, and Ohm
■
DIN A head mount transmitter
■
Standard function blocks: one physical, one transducer, and one analog output
■
LCD display
■
Compliant to PROFIBUS PA Profile 3.02
■
Transmitter–sensor matching with Callendar-Van Dusen constants
Easy to use human-centered designs to make your job simple
■
Diagnostic information and process health at your fingertips with intuitive Device Dashboards (DD).
■
Communication clips are easily accessible when an LCD display is attached.
■
Easy wiring practices with captive sensor screw terminals, an optimized wiring diagram, and field mount enclosure option.
Optimize plant efficiency and increase visibility into the process with an expansive diagnostic offering
■
Keep your process up and running with the Hot Backup™ feature where if your primary sensor fails, a second sensor seamlessly
takes over and prevents the measurement failure.
■
Tighten control with sensor drift alert that detects drifting sensors and pro-actively notifies the user.
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February 2019
■
Enable predictive maintenance practices with thermocouple degradation diagnostic that monitors the health of the
thermocouple loop.
■
Improve quality with minimum and maximum temperature tracking that records temperature extremes of the process and the
ambient environment.
Ordering Information
The Rosemount 644 is a versatile temperature transmitter that delivers field reliability and advanced accuracy and stability to meet
demanding process needs.
Transmitter features include:
■
HART/4–20 mA with Selectable Revision 5 and 7 (option code A), FOUNDATION Fieldbus (option code F) or PROFIBUS PA (option
code W)
■
DIN A head mount, field mount, or rail mount transmitter styles
■
Head mount - Dual sensor (option code S)
■
Field mount - Dual sensor (option code D)
■
Safety Certified to IEC 61508 with Certificate of FMEDA Data (option code QT)
■
LCD display (option code M5)
■
LOI (option code M4)
■
Advanced diagnostics (option codes DC and DA1)
■
Enhanced transmitter accuracy and stability (option code P8)
■
Transmitter-sensor matching (option code C2)
Specification and selection of product materials, options, or components must be made by the purchaser of the equipment. See
Specifications and reference data for Rosemount 644 HART (Device Revision 7 or Previous) for more information on material
selection.
Table 1: Rosemount 644 Temperature Transmitter Ordering Information
The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings
are subject to additional delivery lead time.
● = Available
– = Not Available
Model Product description
644 Temperature transmitter
Transmitter type
H DIN A head mount - single sensor input ★
5
February 2019
Table 1: Rosemount 644 Temperature Transmitter Ordering Information (continued)
Model Product description
R Rail mount - single sensor input ★
S DIN A head mount - dual sensor input (HART only) ★
(1)
F
D
(1)
Field mount - single sensor input (HART only) ★
Field mount - dual sensor input (HART only) ★
Output Head Rail
A 4–20 mA with digital signal based on HART protocol ● ● ★
(2)
F
FOUNDATION Fieldbus digital signal (includes 2 AI function blocks and
● – ★
Backup LAS)
(2)
W
PROFIBUS PA digital signal ● – ★
Product certifications
Hazardous locations certificates (consult factory for availability
(3)
) A F W A
NA No approval ● ● ● ● ★
E5 USA Explosion-proof; Dust Ignition-proof ● ● ● – ★
Head Rail
A F W A
I5 USA Intrinsically Safe; Non-incendive ● ● ● ● ★
K5 USA Explosionproof; Intrinsically Safe; Non-incendive; Dust Ignition-
● ● ● – ★
proof
NK IECEx Dust ● ● – – ★
KC USA and Canada Intrinsically Safe and Non-incendive – – – ● ★
KB USA and Canada: Explosion-proof; Intrinsically Safe; Non-incendive;
● – – – ★
Dust Ignition-proof
KD USA, Canada, and ATEX Explosionproof, Intrinsically Safe ● ● ● – ★
I6 Canada Intrinsically Safe ● ● ● ● ★
K6 Canada Explosionproof; Intrinsically Safe; Non-incendive; Dust
● ● ● – ★
Ignition-proof
I3 China Intrinsic Safety ● ● – – ★
E3 China Flameproof ● ● ● – ★
N3 China Type n ● ● – – ★
E1 ATEX Flameproof ● ● ● – ★
N1 ATEX Type n ● ● ● – ★
NC ATEX Type n Component ● ● ● ● ★
K1 ATEX Flameproof; Intrinsic Safety; Type n; Dust ● ● ● – ★
ND ATEX Dust Ignition–Proof ● ● ● – ★
KA Canada and ATEX: Explosion proof; Intrinsically Safe; Non-incendive ● – – – ★
I1 ATEX Intrinsic Safety ● ● ● ● ★
E7 IECEx Flameproof ● ● ● – ★
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February 2019
Table 1: Rosemount 644 Temperature Transmitter Ordering Information (continued)
Model Product description
I7 IECEx Intrinsic Safety ● ● ● ● ★
N7 IECEx Type n ● ● ● – ★
NG IECEx Type n Component ● ● ● ● ★
K7 IECEx Flameproof; Intrinsic Safety; Type n; Dust ● ● – – ★
I2 INMETRO Intrinsic Safety ● ● ● – ★
E4 Japan Flameproof ● ● – – ★
I4 Japan Intrinsic Safety ● ● – – ★
E2 INMETRO Flameproof ● ● ● – ★
EM Technical Regulations Customs Union (EAC) Flameproof ● ● ● – ★
IM Technical Regulations Customs Union (EAC) Intrinsic Safety ● ● ● ● ★
KM Technical Regulations Customs Union (EAC) Flameproof, Intrinsic
● ● ● – ★
Safety, and Dust-Ignitionproof
Consult factory on availability.
(1)
Only available with H (single sensor), not S(dual sensor).
(2)
See Table 2 for the validity of enclosures with individual approval options.
(3)
Options
Head Rail
A F W A
Plantweb™ standard diagnostic functionality
(1)
DC
DA1 HART sensor and process diagnostic suite: Thermocouple diagnostic
Diagnostics: Hot Backup and sensor drift alert ● – – – ★
● – – – ★
and min/max tracking
Enclosure options
Housing style Material Entry size Diameter
(2) (3)
J5
(3)
J6
R1 Rosemount
Universal junction
box, 2 entries
Universal junction
box, 2 entries
connection head, 2
Aluminum M20 × 1.5 3-in. (76
mm)
Aluminum ½–14 NPT 3-in. (76
mm)
Aluminum M20 × 1.5 3-in. (76
mm)
● ● ● – ★
● ● ● – ★
● ● ● – ★
entries
R2 Rosemount
connection head, 2
entries
(2)
J1
Universal junction
box, 3 entries
J2 Universal junction
box, 3 entries
Aluminum ½–14 NPT 3-in. (76
mm)
Aluminum M20 × 1.5 3.5-in. (89
mm)
Aluminum ½–14 NPT 3.5-in. (89
mm)
● ● ● – ★
● ● ● – ★
● ● ● – ★
7
D1
D2
J3
(2)
(1) (2) (4)
(1) (4)
Field mount
housing, separate
terminal
compartment
Field mount
housing, separate
terminal
compartment
Universal junction
box, 3 entries
Aluminum M20 × 1.5 3.5-in. (89
mm)
Aluminum ½–14 NPT 3.5-in. (89
mm)
Cast SST M20 × 1.5 3.5-in. (89
mm)
February 2019
– – – – ★
– – – – ★
● ● ● –
J4 Universal junction
box, 3 entries
(2) (3)
J7
Universal junction
box, 2 entries
(3)
J8
Universal junction
box, 2 entries
R3 Rosemount
connection head, 2
entries
R4 Rosemount
connection head, 2
entries
S1 Connection head, 2
entries
S2 Connection head, 2
entries
S3 Connection head, 2
entries
S4 Connection head, 2
entries
Mounting bracket
(5)
Cast SST ½–14 NPT 3.5-in. (89
mm)
Cast SST M20 × 1.5 3-in. (76
mm)
Cast SST ½–14 NPT 3-in. (76
mm)
Cast SST M20 × 1.5 3-in. (76
mm)
Cast SST ½–14 NPT 3-in. (76
mm)
Polished SST ½–14 NPT 3-in. (76
mm)
Polished SST ½–14 NPSM 3-in. (76
mm)
Polished SST M20 × 1.5 3-in. (76
mm)
Polished SST M20 × 1.5,
M24 × 1.4
3-in. (76
mm)
● ● ● –
● ● ● –
● ● ● –
● ● ● –
● ● ● –
● ● ● –
● ● ● –
● ● ● –
● ● ● –
B4 316 SST U-bolt mounting bracket, 2-in. pipe mount ● ● ● ● ★
B5 “L” mounting bracket for 2-in. pipe or panel mounting ● ● ● ● ★
Display and interface options
M4 LCD display with LOI ● – – – ★
M5 LCD display ● ● ● – ★
Software configuration
C1 Custom configuration of date, descriptor and message (requires CDS
● ● ● ● ★
with order)
Enhanced performance
(6)
P8 Enhanced transmitter accuracy and stability ● – – – ★
Alarm level configuration
A1 NAMUR alarm and saturation levels, high alarm ● – – ● ★
Head Rail
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February 2019
A F W
A
CN NAMUR alarm and saturation levels, low alarm ● – – ● ★
C8 Low alarm (standard Rosemount alarm and saturation values) ● – – ● ★
Line filter
F5 50 Hz line voltage filter ● ● ● ● ★
F6 60 Hz line voltage filter ● ● ● ● ★
Sensor trim
C2 Transmitter sensor matching - trim to specific Rosemount RTD
● ● ● ● ★
calibration schedule (CVD constants)
5-Point calibration option
C4 5-point calibration (use option code Q4 to generate a calibration
● ● ● ● ★
certificate)
Calibration certificate
Q4 Calibration certificate (3-point calibration with certificate) ● ● ● ● ★
QP Calibration certification and tamper evident seal ● – – – ★
Custody transfer
D4 MID Custody Transfer (Europe) ● – – – ★
Quality certification for safety
QT Safety Certified to IEC 61508 with certificate of FMEDA data ● – – – ★
Shipboard certification
SBS American Bureau of Shipping (ABS) Type Approval ● ● ● – ★
SBV Bureau Veritas (BV) Type Approval ● ● ● – ★
SDN Det Norske Veritas (DNV) Type Approval ● ● ● – ★
SLL Lloyd's Register (LR) Type Approval ● ● ● – ★
External ground
G1 External ground lug assembly (see External ground screw assembly ) ● ● ● – ★
Transient protection
(7) (8)
T1
Integral transient protector ● ● – – ★
Cable gland option
G2 Cable gland (7.5–11.99 mm) ● ● ● – ★
G7 Cable gland, M20 × 1.5, Ex e, blue polyamide (5–9 mm) ● ● ● – ★
Cover chain option
G3 Cover chain ● ● ● – ★
Conduit Electrical Connector
(9)
GE M12, 4-pin, male connector (eurofast®) ● ● ● – ★
GM A size mini, 4-pin, male connector (minifast®) ● ● ● – ★
External label
EL External label for ATEX Intrinsic Safety ● ● ● – ★
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February 2019
HART revision configuration
HR5 Configured for HART Revision 5 ● – – – ★
(10)
HR7
Configured for HART Revision 7 ● – – – ★
Assemble to options
XA Sensor specified separately and assembled to transmitter ● ● ● – ★
Extended product warranty
WR3 3-year limited warranty ● ● ● ● ★
WR5 5-year limited warranty ● ● ● ● ★
Typical rail mount model number: 644 R A I5
Typical head mount model number: 644 S A I5 DC DA1 J5 M5
Typical field mount model Nnumber: 644 F A I5 DC DA1 D1 M4 T1
Only available with S (dual sensor), not H(single sensor).
(1)
When ordered with XA, ½-in. NPT enclosure will come equipped with an M20 adapter with the sensor installed as a process ready.
(2)
Enclosure ships equipped with 50.8 mm (2-in.) SST pipe U-bolt mounting kit.
(3)
Available with Transmitter Type 644F or 644D only.
(4)
Bracket assembly only available with J1, J2, J3, J4, D1, and D2.
(5)
See Table 11 for Enhanced Accuracy specifications.
(6)
Transient Protection option requires the use of J1, J2, J3, or J4.
(7)
Transient Protection with Output option code F only available with NA, E3, I3, and N3 product certifications.
(8)
Available with Intrinsically Safe approvals only. For USA Intrinsically Safe or non-incendive approval (option code I5), install in accordance with
(9)
Rosemount drawing 03151-1009.
Configures the HART output to HART Revision 7. The device can be field configured to HART Revision 5 if needed.
(10)
Note
For additional options (e.g., K codes), contact your local Emerson representative.
Table 2: Rosemount 644 Enclosure Options Valid with Individual Approval Codes
Code Hazardous Location Approval Description Enclosure Options Valid with Approval
NA No approval J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, S1, S2, S3,
S4, D1, D2
E5 USA Explosion proof; Dust Ignition-proof J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
I5 USA Intrinsically Safe; Non-incendive J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
K5 USA Explosion proof; Intrinsically Safe; Non-
J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
incendive; Dust Ignition-proof
NK IECEx Dust J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
KC USA and Canada Intrinsically Safe and Non-
Only available with Rail mount device
incendive
KB USA and Canada: Explosion proof; Intrinsically
J2, J4, R2, R4, J6, J8, D2
Safe; Non-incendive; Dust Ignition-proof
KD USA, Canada, and ATEX Explosion proof,
J2, J4, R2, R4, J6, J8, D2
Intrinsically Safe
I6 Canada Intrinsically Safe J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
K6 Canada Explosion proof; Intrinsically Safe; Non-
J2, J4, R2, R4, J6, J8, D2
incendive; Dust Ignition-proof
I3 China Intrinsic Safety J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
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February 2019
Table 2: Rosemount 644 Enclosure Options Valid with Individual Approval Codes (continued)
Code Hazardous Location Approval Description Enclosure Options Valid with Approval
E3 China Flameproof R1, R2, R3, R4, J1, J2, J3, J4, J5, J6, J7, J8, D1, D2
N3 China Type n R1, R2, R3, R4, J1, J2, J3, J4, J5, J6, J7, J8, D1, D2
E1 ATEX Flameproof J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
N1 ATEX Type n J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
NC ATEX Type n Component None
K1 ATEX Flameproof; Intrinsic Safety; Type n; Dust J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
ND ATEX Dust Ignition-Proof J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
KA Canada and ATEX: Explosion proof; Intrinsically
Safe; Non-incendive
I1 ATEX Intrinsic Safety J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, S1, S2, S3,
E7 IECEx Flameproof J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
I7 IECEx Intrinsic Safety J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, S1, S2, S3,
N7 IECEx Type n J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
NG IECEx Type n Component None
K7 IECEx Flameproof; Intrinsic Safety; Type n; Dust J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8, D1, D2
I2 INMETRO Intrinsic Safety J1, J2, J3, J4, R1, R2, R3, R4, J5, J6, J7, J8
E4 Japan Flameproof J2, J6
E2 INMETRO Flameproof R1, R2, R3, R4, J1, J2, J3, J4, J5, J6, J7, J8, D1, D2
KM Technical Regulations Customs Union (EAC)
Flameproof, Intrinsic Safety, and Dust-Ignition
proof
IM Technical Regulations Customs Union (EAC)
Intrinsic Safety
EM Technical Regulations Customs Union (EAC)
Flameproof
J2, J4, R2, R4, J6, J8, D2
S4, D1, D2
S4, D1, D2
J1, J2, J3, J4,J5,J6, J7, J8, R1, R2, R3, R4,
D1, D2, J1, J2, J3, J4,J5,J6, J7, J8, R1, R2, R3, R4, S1,
S2, S3, S4
J1, J2, J3, J4,J5,J6, J7, J8, R1, R2, R3, R4,
K2 INMETRO Flameproof, Intrinsic Safety R1, R2, R3, R4, J1, J2, J3, J4, J5, J6, J7, J8
Tagging
Hardware
■
13 characters total
■
Tags are adhesive or metal labels
■
Tag is permanently attached to transmitter
Software
The transmitter can store up to 32 characters for FOUNDATION Fieldbus and PROFIBUS PA or eight for HART protocol. If no characters
are specified, the first eight characters of the hardware tag are the default. An optional 32 character long software tag is available
when option code HR7 is ordered.
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February 2019
Considerations
External ground screw assembly
The external ground screw assembly can be ordered by specifying code G1 when an enclosure is specified. However, some
approvals include the ground screw assembly in the transmitter shipment, hence it is not necessary to order code G1. The table
below identifies which approval options include the external ground screw assembly and which do not.
Option code External Ground Screw Assembly Included?
E5, I1, I2, I5, I6, I7, IM, IP, K5, K6, NA, I3, KB No–order option code G1
E1, E2, E3, E4, E7, EM, EP, KM, KP, K7, N1, N7, ND, K1, K2, KA,
NK, N3, KD, T1
Table 3: Enclosure Spares
Description Part number
Universal head, aluminum, standard cover, 2-conduit - M20 entries 00644-4420-0002
Universal head, aluminum, display cover, 2-conduit - M20 entries 00644-4420-0102
Universal head, aluminum, standard cover, 2-conduit - ½–14 NPT entries 00644-4420-0001
Universal head, aluminum, display cover, 2-conduit - ½–14 NPT entries 00644-4420-0101
Universal head, SST, standard cover, 2-conduit - M20 entries 00644-4433-0002
Universal head, SST, display cover, 2-conduit - M20 entries 00644-4433-0102
Universal head, SST, standard cover, 2-conduit - ½–14 NPT entries 00644-4433-0001
Universal head, SST, display cover, 2-conduit - ½–14 NPT entries 00644-4433-0101
Connection head, aluminum, standard cover, 2-conduit - M20 × ½ ANPT entries 00644-4410-0021
Connection head, aluminum, display cover, 2-conduit - M20 × ½ ANPT entries 00644-4410-0121
Connection head, aluminum, standard cover, 2-conduit - ½–14 NPT × ½ ANPT entries 00644-4410-0011
Connection head, aluminum, display cover, 2-conduit - ½–14 NPT × ½ ANPT entries 00644-4410-0111
Connection head, SST, standard cover, 2-conduit - M20 × ½ ANPT entries 00644-4411-0021
Yes
Connection head, SST, display cover, 2-conduit - M20 × ½ ANPT entries 00644-4411-0121
Connection head, SST, standard cover, 2-conduit - ½–14 NPT × ½ ANPT entries 00644-4411-0011
Connection head, SST, display cover, 2-conduit - ½–14 NPT × ½ ANPT entries 00644-4411-0111
Connection head, polished SST, standard cover, 2-conduit - M20 × 1.5 entries 00079-0312-0033
Connection head, polished SST, display cover, 2-conduit - M20 × 1.5 entries 00079-0312-0133
Connection head, polished SST, standard cover, 2-conduit - M20 × 1.5/M24 × 1.5 entries 00079-0312-0034
Connection head, polished SST, display cover, 2-conduit - M20 × 1.5/M24 × 1.5 entries 00079-0312-0134
Connection head, polished SST, standard cover, 2-conduit - ½ –14 NPT entries 00079-0312-0011
Connection head, polished SST, display cover, 2-conduit - ½–14 NPT entries 00079-0312-0111
Connection head, polished SST, standard cover, 2-conduit - ½–14 NPSM entries 00079-0312-0022
Connection head, polished SST, display cover, 2-conduit - ½–14 NPSM entries 00079-0312-0122
Universal head, aluminum, standard cover, 3-conduit - M20 entries 00644-4439-0001
Universal head, aluminum, display cover, 3-conduit - M20 entries 00644-4439-0101
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February 2019
Table 3: Enclosure Spares (continued)
Description Part number
Universal head, aluminum, standard cover, 3-conduit - ½–14 NPT entries 00644-4439-0002
Universal head, aluminum, display cover, 3-conduit - ½–14 NPT entries 00644-4439-0102
Universal head, SST, standard cover, 3-conduit - M20 entries 00644-4439-0003
Universal head, SST, display cover, 3-conduit - M20 entries 00644-4439-0103
Universal head, SST, standard cover, 3-conduit - ½ - 14 NPT entries 00644-4439-0004
Universal head, SST, display cover, 3-conduit - ½ - 14 NPT entries 00644-4439-0104
Table 4: Display Kit Spares
Description Part number
Display only
Rosemount 644 HART LCD display (option M5) 00644-7730-0001
Rosemount 644 HART LOI (option M4) 00644-7730-1001
Rosemount 644 FOUNDATION Fieldbus LCD display (option M5) 00644-4430-0002
Rosemount 644 PROFIBUS PA LCD display (option M5) 00644-4430-0002
Rosemount 644 HART Legacy display kit (option M5 - device rev 7) 00644-4430-0002
Display with aluminum cover
Rosemount 644 HART LCD display (option M5) 00644-7730-0011
Rosemount 644 HART LCD display (option M5 - for use with options J1-J2) 00644-7730-0111
Rosemount 644 HART LOI (option M4) 00644-7730-1011
Rosemount 644 HART LOI (option M4 - for use with options J1-J2) 00644-7730-1111
Rosemount 644 FOUNDATION Fieldbus LCD display (option M5) 00644-4430-0001
Rosemount 644 PROFIBUS PA LCD display (option M5) 00644-4430-0001
644 HART Legacy display kit (option M5) 00644-4430-0001
Display with SST meter cover
Rosemount 644 HART LCD display (option M5)
Rosemount 644 HART LCD display (option M5)
Rosemount 644 HART LOI (option M4)
Rosemount 644 HART LOI (option M4)
(1)
(2)
Rosemount 644 FOUNDATION Fieldbus LCD display (option M5)
Rosemount 644 PROFIBUS PA LCD display (option M5)
Rosemount 644 HART Legacy display kit (option M5)
(1)
(2)
(1)
(1)
(1)
00644-7730-0021
00644-7730-0121
00644-7730-1021
00644-7730-1121
00644-4430-0011
00644-4430-0011
00644-4430-0011
Covers provided are compatible with the 3-in. (76 mm) universal junction box and Rosemount connection head enclosure styles.
(1)
Cover provided is compatible with the 3.5-in. (89 mm) universal junction box and field mount enclosure styles.
(2)
Table 5: Transient Protection Spares
Description Part number
HART transient protector without enclosure 00644-4537-0001
13
Table 5: Transient Protection Spares (continued)
Description Part number
February 2019
HART transient protector with universal head, aluminum, standard cover, 3-conduit -
00644-4538-0001
M20
HART transient protector with universal head, aluminum, display cover, 3-conduit -
00644-4538-0101
M20
HART transient protector with universal head, aluminum, standard cover, 3-conduit -
00644-4538-0002
½ NPT
HART transient protector with universal head, aluminum, display cover, 3-conduit - ½
00644-4538-0102
NPT
HART transient protector with universal head, SST, standard cover, 3-conduit - M20 00644-4538-0003
HART transient protector with universal head, SST, display cover, 3-conduit - M20 00644-4538-0103
HART transient protector with universal head, SST, standard cover, 3-conduit - ½-NPT 00644-4538-0004
HART transient protector with universal head, SST, display cover, 3-conduit - ½-NPT 00644-4538-0104
FOUNDATION Fieldbus transient protector without enclosure 00644-4539-0001
Table 6: Miscellaneous Accessories
Description Part number
Stainless steel meter housing cover, Fieldbus extended 03031-0199-0025
Ground screw assembly kit
(1)
00644-4431-0001
Mounting screws and springs 00644-4424-0001
Hardware kit for mounting a Rosemount 644 head mount to a DIN rail (includes clips
00644-5301-0010
for symmetrical and asymmetrical rails)
Hardware kit for retrofitting a Rosemount 644 head mount in an existing threaded
00644-5321-0010
sensor
connection head (former option code L1)
U-bolt mounting kit for universal housing 00644-4423-0001
U-bolt mounting bracket, 2-in. pipe mount - 316 SST (option B4) 00644-7610-0001
L - mounting bracket for 2-in. pipe or panel mounting, SST, 2g vibration rating (option
00644-7611-0001
B5)
Universal clip for rail or wall mount 03044-4103-0001
24 inches of symmetric (top hat) rail 03044-4200-0001
24 inches of asymmetric (G) rail 03044-4201-0001
Ground clamp for symmetric or asymmetric rail 03044-4202-0001
Snap rings kit (used for assembly to a DIN sensor) 00644-4432-0001
Cover clamp assembly for 2-conduit J-box 00644-4434-0001
Cover clamp assembly for 3-conduit J-box 00644-4434-0002
Terminal block, 13 mm M4 mounting screws 00065-0305-0001
Compatible with the 3-in. (76 mm) universal junction box and Rosemount connection head enclosure styles.
(1)
14 www.emerson.com
February 2019
Table 7: Housing Covers
Description Part number
Standard cover- aluminum (J5, J6, R1, R2) 03031-0292-0001
Standard cover- SST (J7, J8, R3, R4) 03031-0292-0002
Aluminum meter cover. (J5, J6, R1, R2) 03031-0199-0015
SST meter cover (J7, J8, R3, R4) 03031-0199-0025
Specifications
HART, FOUNDATION Fieldbus, and PROFIBUS PA Protocols
Functional specifications
Inputs
User-selectable; sensor terminals rated to 42.4 Vdc. See Accuracy example (FOUNDATION Fieldbus and PROFIBUS PA devices).
Output
Single two-wire device with either 4–20 mA/HART, linear with temperature or input; or completely digital outputs with FOUNDATION
Fieldbus communication (ITK 5.01 compliant), or PROFIBUS PA (compliant with profile 3.02).
Isolation
Input/output isolation tested to 620 Vrms.
Local display options
LCD
display
LCD
display
with LOI
An optional 11 digit, two-line integral LCD display operates with a floating or fixed decimal point. It displays
engineering units (°F, °C, °R, K, Ohms and mV), mA, and percent of range. The display can be configured to alternate
between selected display options. Display settings are pre-configured at the factory according to the standard
transmitter configuration. They can be re-configured in the field using either HART, FOUNDATION Fieldbus, or
PROFIBUS PA communications.
An optional 14-digit, two-line integral LCD display operates with a floating or fixed decimal point. The LOI includes
all features and functionality available in the regular display with an added two-button configuration capability
directly at the display interface. The LOI also has optional password protection for secure operations. The LOI is only
available on the Rosemount 644 HART head mount and field mount transmitters.
For more information on the LOI configuration options or further functionality that the LOI offers, see the
Rosemount 644 Temperature Transmitter Reference Manual.
Humidity Limits
0–95 percent relative humidity
Update Time
≤0.5 second per sensor
Accuracy(default configuration) PT 100
HART Standard: ±0.15 °C
HART Enhanced: ±0.1 °C
FOUNDATION Fieldbus: ±0.15 °C
15
February 2019
PROFIBUS PA: ±0.15 °C
Physical specifications
Material selection
Emerson provides a variety of Rosemount product with various product options and configurations including materials of
construction that can be expected to perform well in a wide range of applications. The Rosemount product information presented
is intended as a guide for the purchaser to make an appropriate selection for the application. It is the purchaser’s sole responsibility
to make a careful analysis of all process parameters (such as all chemical components, temperature, pressure, flow rate, abrasives,
contaminants, etc.), when specifying product, materials, options and components for the particular application. Emerson is not in a
position to evaluate or guarantee the compatibility of the process fluid or other process parameters with the product, options,
configuration or materials of construction selected.
Conformance to specifications (±3σ [Sigma])
Technology leadership, advanced manufacturing techniques, and statistical process control ensure specification conformance to at
least ±3σ.
Electrical connections
Rosemount model Power and Sensor Terminals
644 head mount (HART) Captivated screw terminals permanently fixed to terminal block
644 head mount (FOUNDATION Fieldbus/PROFIBUS) Compression screw terminals permanently fixed to the terminal
block
644 field mount (HART) Captivated screw terminals permanently fixed to the terminal
block
644 rail mount (HART) Compression screw permanently fixed to front panel
Field Communicator Connections
Communication Terminals
Rosemount 644 head/field mount Clips permanently fixed to terminal block
Rosemount 644 rail mount Clips permanently fixed to front panel
Materials of Construction
Electronics Housing and Terminal Block
Rosemount 644 head/ field mount GE polyphenylene oxide glass reinforced GFN -2 or -3
Rosemount 644 rail mount Polycarbonate
Enclosure (Options J1, J2, J5, J6, R1, R2, D1, and D2)
Housing Low-copper aluminum
Paint Polyurethane
Cover O-ring Buna-N
Materials of Construction (Stainless Steel Housing for Biotechnology, Pharmaceutical Industries, and Sanitary
Applications)
Housing and standard meter cover
■
316 SST
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February 2019
Cover O-ring
■
Buna-N
Mounting
The Rosemount 644R attaches directly to a wall or a DIN rail. The Rosemount 644H installs in a connection head or universal head
mounted directly on a sensor assembly, apart from a sensor assembly using a universal head, or to a DIN rail using an optional
mounting clip.
Special Mounting Considerations
See for the special hardware that is available to:
■
Mount a Rosemount 644H to a DIN rail. (see Dimensional drawings)
■
Retrofit a new Rosemount 644H to replace an existing Rosemount 644H Transmitter in an existing threaded sensor
connection head. (see Table 3)
Weight
Code Options Weight
644H HART, head mount transmitter 78 g (2.75 oz)
644H FOUNDATION Fieldbus, head mount transmitter 92 g (3.25 oz)
644H PROFIBUS PA, head mount transmitter 92 g (3.25 oz)
644R HART, rail mount transmitter 174 g (6.14 oz)
M5 LCD display 34 g (1.2 oz)
M4 LCD display with local operator interface 34 g (1.2 oz)
J1, J2 Universal head, 3-conduits, standard cover 718 g (25.33oz)
J1, J2 Universal head, 3-conduits, meter cover 826 g (29.14oz)
J3, J4 Cast SST universal head, 3-conduits, standard cover 2073 g (73.12oz)
J3, J4 Cast SST universal head, 3-conduits, meter cover 2148 g (75.77oz)
J5, J6 Aluminum 2-conduits, universal head, standard cover 520g (18.43oz)
J5, J6 Aluminum 2-conduits, universal head, meter cover 604 g (21.27oz)
J7, J8 Cast SST universal head 2-conduits, standard, cover 577 g (20.35oz)
J7, J8 Cast SST universal head 2-conduits, meter cover 667 g (23.53oz)
R1, R2 Aluminum connection head, standard cover 523 g (18.45 oz)
R1, R2 Aluminum connection head, meter cover 618 g (21.79 oz)
R3, R4 Cast SST connection head, standard cover 1615 g (56.97 oz)
R3, R4 Cast SST connection head, meter cover 1747 g (61.62 oz)
D1, D2 HART, field mount transmitter, aluminum housing, meter
cover, standard cover
1128 g (39.79 oz)
Weight (Stainless Steel Housing for Biotechnology, Pharmaceutical Industries, and Sanitary Applications)
Option Code
S1 840 g (27 oz) 995 g (32 oz)
S2 840 g (27 oz) 995 g (32 oz)
Standard Cover Meter Cover
17
Option Code Standard Cover Meter Cover
S3 840 g (27 oz) 995 g (32 oz)
S4 840 g (27 oz) 995 g (32 oz)
Enclosure Ratings (Rosemount 644H/F)
All available enclosures are Type 4X, IP66, and IP68.
Sanitary Housing Surface
Surface finish is polished to 32 RMA. Laser etched product marking on housing and standard covers.
Performance specifications
ElectroMagnetic Compatibility (EMC) NAMUR NE 21 Standard
The Rosemount 644H HART meets the requirements for NAMUR NE 21 Rating.
Susceptibility Parameter Influence
ESD
■
6 kV contact discharge
■
8 kV air discharge
None
February 2019
Radiated
Burst
Surge
Conducted
■
80 – 1000 MHz at 10 V/m AM < 1.0%
■
1 kV for I.O. None
■
0.5 kV line–line
■
1 kV line–ground (I.O. tool)
■
10 kHz to 80 MHz at 10 V < 1.0%
None
CE Electromagnetic Compatibility Compliance Testing
The Rosemount 644 is compliant with Directive 2004/108/EC. Meets the criteria under IEC 61326:2006, IEC 61326-2-3:2006.
Power Supply Effect
Less than ±0.005 percent of span per volt
Stability
RTDs and thermocouples have a stability of ±0.15 percent of output reading or 0.15 °C (whichever is greater) for 24 months.
When ordered with the P8 option code:
■
RTDs: ±0.25 percent of reading or 0.25 °C, whichever is greater, for five years
■
Thermocouples: ±0.5 percent of reading or 0.5 °C, whichever is greater, for five years
Self Calibration
The analog-to-digital measurement circuitry automatically self-calibrates for each temperature update by comparing the dynamic
measurement to extremely stable and accurate internal reference elements.
Vibration Effect
The Rosemount 644 HART head mount and field mount are tested to the following specifications with no effect on performance
per IEC 60770-1, 2010:
18 www.emerson.com
–
+
+
–
1
2-wire
RTD and Ω
3-wire
RTD and Ω*
4-wire
RTD and Ω
T/C
and mV
2 3 4 4 4 43 3 32 2 21 1 1
+
_
February 2019
Frequency Vibration
10 to 60 Hz 0.35 mm displacement
60 to 1000 Hz 5g (50 m/s2) peak acceleration
The Rosemount 644 Fieldbus and PROFIBUS are tested to the following specifications with no effect on performance per IEC
60770-1: 1999:
Frequency Vibration
10 to 60 Hz 0.21 mm displacement
60 to 2000 Hz 3 g peak acceleration
Rosemount 644 Sensor Connections Diagrams
Emerson 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.
- HART head mount
- HART rail mount
- Fieldbus
- PROFIBUS
19
- HART field mount
FOUNDATION Fieldbus specifications
February 2019
Function blocks
Resource block
The resource block contains physical transmitter information including available memory, manufacture identification, device type,
software tag, and unique identification.
Transducer block
The transducer block contains the actual temperature measurement data, including sensor 1 and terminal temperature. It includes
information about sensor type and configuration, engineering units, linearization, reranging, damping, temperature correction,
and diagnostics.
LCD display block
The LCD display block is used to configure the local display, if an LCD display is being used.
Analog input (AI)
■
Processes the measurement and makes it available on the Fieldbus segment.
■
Allows filtering, alarming, and engineering unit changes.
PID block
The transmitter provides control functionality with one PID function block in the transmitter. The PID block can be used to perform
single loop, cascade, or feedforward control in the field.
Block
Resource N/A
Execution time (milliseconds)
Transducer N/A
LCD display block N/A
Analog input 1 45
Analog Input 2 45
PID 1 60
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