Rosemount 248 - Physical Specifications; Performance Specifications

Reference Manual
00809-0100-4825, Rev BB
August 2005
A-3
Rosemount 248
Physical Specifications HART Communicator Connections
Communication Terminal: Clips permanently fixed to the terminals
Materials of Construction
Electronics Housing
•Noryl
®
glass reinforced
Universal (option code U) and Rosemount
®
Connection (option code A)
Heads
• Housing: Low-copper aluminum (option codes U and A)
Stainless Steel (option codes G and H)
• Paint: Polyurethane
• Cover O-Ring: Buna–N
BUZ Head (option code B)
• Housing: Aluminum
• Paint: Aluminum lacquer
• O-Ring Seal: Rubber
Mounting
The Rosemount 248R attaches directly to a wall or a DIN rail. The Rosemount
248H installs in a connection head or universal head mounted directly on a
sensor assembly or apart from a sensor assembly using a universal head.
The Rosemount 248H can also mount to a DIN rail using an optional
mounting clip (see Table A-10).
Weight
Enclosure Ratings
The Universal (option code U) and Rosemount Connection (option code A)
Heads are NEMA 4X, IP66, and IP68. The Universal Head with
1
/2-in. NPT
threads is CSA Enclosure Type 4X. The BUZ head (option code B) is IP54.
Performance
Specifications
EMC (ElectroMagnetic Compatibility) NAMUR NE21 Standard
The Rosemount 248 meets the requirements for NAMUR NE21 Rating
Code Options Weight
248H Head Mount Transmitter 42 g (1.5 oz)
248R Rail Mount Transmitter 250g (8.8 oz)
U Universal Head 520 g (18.4 oz)
B BUZ Head 240 g (8.5 oz)
C Polypropylene Head 90 g (3.2 oz)
A Rosemount Connection Head 524 g (18.5 oz)
S Polished Stainless Steel Head 537 g (18.9 oz)
G Rosemount Connection Head (SST) 1700 g (60 oz)
H Universal Head (SST) 1700 g (60 oz)
Susceptibility Parameter Influence
ESD
• 6 kV contact discharge
• 8 kV air discharge
None
Radiated • 80 – 1000 MHz at 10 V/m AM None
Burst • 1 kV for I.O. None
Surge
• 0.5 kV line–line
• 1 kV line–ground
None
Conducted • 150 kHz to 80 MHz at 10 V None