Product introduction：

The Rosemount 3051SFA Annubar Flow Meter is a no-equal solution with a patented, averaging pitot tube that delivers superior measurement accuracy over a wide flow range. Its patented T-shaped sensor is engineered with an integrated thermowell, capable of obtaining measurements via a single pipe penetration while maintaining a small profile in the pipe to reduce permanent pressure loss and increase energy savings. This flow meter is also engineered with built-in flow calculations for fully compensated mass flow measurements and is offered with multiple communication protocols including WirelessHART®.

Product feature：

Designed with built-in flow calculations for direct reporting of fully-compensated mass flow
Advanced diagnostics provide diagnostic coverage to detect abnormal process conditions and electrical loop issues
Callendar-Van Dusen sensor matching improves temperature accuracy enabling best-in-class flow calculations
Ultra for Flow performance class enables optimized flow measurement with a ±0.04% of reading accuracy
T-shape Annubar design features very low permanent pressure loss
Integral thermowell of sensor adds process temperature measurement without additional pipe penetrations
All-welded, SuperModule™ design offers industry-leading accuracy in harsh environments and applications
Flowmeters come fully configured, leak-tested and ready to install right out of the box for fast installation
Sensor stagnation zone positioned to reduce noise, measurement inaccuracies and keeps particulates from clogging
SIL 2/3 certified to IEC 61508 (via 3rd party) and prior-use certificate of FMEDA data for safety installations
WirelessHART® technology is secure, cost-effective and delivers >99% data reliability without the cost of wiring
SmartPower module provides up to 10-year maintenance-free operation and field replacement without transmitter removal

Product Parameter：

Model
Code	Description
644	Temperature transmitter
Transmitter type
Code	Description
H	DIN A head mount - single sensor input
S	DIN A head mount - dual sensor input (HART only)
F	Field mount -single sensor input (HART only)
D	Field mount - dual sensor input (HART only)

Code	Description
A	4-20 mA with digital signal based on HART® Protocol
F	FOUNDATION Fieldbus digital signal (includes 2 analog input [AI] function blocks and backup Link Active Scheduler [LAS])
W	PROFIBUS° PA digital signal
KB	USA and Canada: Explosion-proof; Intrinsically Safe; Non-incendive; Dust ignition-proof
KD	USA, Canada, and ATEX Explosion-proof, Intrinsically Safe
I6	Canada Intrinsically Safe
K6	Canada Explosion-proof, 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
I7	lECEx 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 lgnitionproof

Enclosure
Code	Housing style	Material	Entry size	Diameter
J5	Universal junction box, 2 entries	Aluminum	M20x 1.5	3 in. (76 mm)
J6	Universal junction box, 2 entries	Aluminum	½-14 NPT	3 in. (76 mm)
R1	Rosemount connection head, 2 entries	Aluminum	M20x 1.5	3 in. (76 mm)
R2	Rosemount connection head, 2 entries	Aluminum	½-14 NPT	3 in. (76 mm)
J1	Universal junction box, 3 entries	Aluminum	M20x 1.5	3.5 in. (89 mm)
J2	Universal junction box, 3 entries	Aluminum	½-14 NPT	3.5 in. (89 mm)
D1	Field mount housing.separate terminal compartment	Aluminum	M20x 1.5	3.5 in. (89 mm)
D2	Field mount housing.separate terminal compartment	Aluminum	½-14 NPT	3.5 in. (89 mm)
J3	Universal junction box, 3 entries	Cast SST	M20x 1.5	3.5 in. (89 mm)
J4	Universal junction box, 3 entries	Cast SST	½-14 NPT	3.5 in. (89 mm)
J7	Universal junction box, 2 entries	Cast SST	M20x 1.5	3 in. (76 mm)
J8	Universal junction box, 2 entries	Cast SST	½-14 NPT	3 in. (76 mm)
R3	Rosemount connection head, 2 entries	Cast SST	M20x 1.5	3 in. (76 mm)
R4	Rosemount connection head, 2 entries	Cast SST	½-14 NPT	3 in. (76 mm)
S1	Connection head, 2 entries	Polished SST	½-14 NPT	3 in. (76 mm)
S2	Connection head, 2 entries	Polished SST	½-14 NPTSM	3 in. (76 mm)
S3	Connection head, 2 entries	Polished SST	M20x 1.5	3 in. (76 mm)
S4	Connection head, 2 entries	Polished SST	M20x 1.5, M24x 1.4	3 in. (76 mm)