Emerson 644 manual Physical

Rosemount 644

Reference Manual

00809-0400-4728, Rev AA June 2011

Physical	Electrical Connections
	Model	Power and Sensor Terminals

644H Compression screws permanently fixed to terminal block WAGO® Spring clamp terminals are optional (option code G5)

Field Communicator Connections

Communication Terminals

644H

Clips permanently fixed to terminal block

Materials of Construction

Electronics Housing and Terminal Block

644H

Noryl® glass reinforced

Enclosure (Option code J5 or J6)

Housing	Low-copper aluminum
Paint	Polyurethane
Cover O-ring	Buna-N

Materials of Constructions (Stainless Steel Housing for Biotechnology, Pharmaceutical Industries, and Sanitary Applications)

Housing and Standard Meter Cover

•316 SST Cover O-Ring

•Buna-N

Mounting

The 644R attaches directly to a wall or a DIN rail. The 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.

Weight

Code	Options	Weight
644H	Head Mount Transmitter	92 g (3.25 oz)
M5	LCD Display	38 g (1.34 oz)
J5, J6	Universal Head, Standard Cover	577 g (20.35 oz)
J5, J6	Universal Head, Meter Cover	667 g (23.53 oz)

Weight (Stainless Steel Housing for Biotechnology, Pharmaceutical Industries, and Sanitary Applications)

Option Code	Standard Cover	Meter Cover
S1	840 g (27 oz)	995 g (32 oz)
S2	840 g (27 oz)	995 g (32 oz)
S3	840 g (27 oz)	995 g (32 oz)
S4	840 g (27 oz)	995 g (32 oz)

Enclosure Ratings (644H)

All option codes (S1, S2, S3, S4, J5 and J6, J7 and J8) are NEMA 4X, IP66, and IP68. Option code J6 is CSA Enclosure Type 4X.

Sanitary Housing Surface

Surface finish is polished to 32 RMA. Laser etched product marking on housing and standard covers.

A-2