Filter
Top Products
Reference Manual
00809-0400-4728, Rev AA
June 2011
Rosemount 644
A-2
Physical Electrical Connections
Field Communicator Connections
Materials of Construction
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
Weight (Stainless Steel Housing for Biotechnology, Pharmaceutical
Industries, and Sanitary Applications)
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.
Model Power and Sensor Terminals
644H Compression screws permanently fixed to terminal block
WAGO
®
Spring clamp terminals are optional (option code G5)
Communication Terminals
644H Clips permanently fixed to terminal block
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
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)
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)