10
Rosemount 248
August 2014
www.rosemount.com
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 Process Management 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 specification [±3σ (Sigma)]
Technology leadership, advanced manufacturing techniques,
and statistical process control ensure specification conformance
to at least ±3
σ.
Field Communicator connections
Communication Terminal: clips permanently fixed to the
terminals
Materials of construction
Electronics housing
Reinforced GE polyphenylene oxide glass
Universal (option code U and H) and Rosemount
connection (option code A and G) 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 248R attaches directly to a wall or a DIN rail. The 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 248H can also mount to a DIN rail using an
optional mounting clip (see Table 7).
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 NPT threads is CSA Enclosure Type 4X.
The BUZ head (option code B) is NEMA 4 and IP65.
Code Options Weight
248H Headmount Transmitter 42 g (1.5 oz)
248R Railmount Transmitter 250 g (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 (SST) Head 537 g (18.9 oz)
G Rosemount Connection Head (SST) 1700 g (60 oz)
H Universal Head (SST) 1700 g (60 oz)
(2 pages)
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