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Reference Manual
00809-0100-4690, Rev EA
March 2007
Rosemount 2088 and 2090
3-4
GENERAL
CONSIDERATIONS
The accuracy of the pressure measurement depends on proper installation of
the transmitter and impulse piping. The piping between the process and
transmitter must accurately transmit pressure to the transmitter. Mount the
transmitter close to the process and use a minimum of impulse piping to
achieve the best accuracy. Keep in mind, however, the need for convenient
access, safety of personnel, practical field calibration, and a suitable
transmitter environment. In general, install the transmitter to minimize
vibration, shock, and temperature fluctuations.
ENVIRONMENTAL
CONSIDERATIONS
Temperature
Mount the transmitter in a manner that minimizes variations in ambient
temperature.
Moisture and Corrosives The transmitter is designed to resist attack by moisture and corrosives. The
electronics module is fully encapsulated and mounted in a compartment that
is sealed from the power-side conduit entries. O-ring seals protect both
compartments when the covers are installed.
In humid environments, it is possible for moisture to accumulate in the conduit
lines and reach the terminal compartment of the transmitter housing. To
prevent moisture from entering the terminal compartment, mount the
transmitter at a high point in the conduit run, if possible. Also, remove the
terminal compartment cover periodically and inspect the terminals for
moisture and corrosion.
Hazardous Locations
Installations
Rosemount 2088, 2090P, and 2090F transmitters are designed with
explosion-proof electronics enclosures and circuitry that complies with
intrinsic safety requirements and non-incendive operation. Individual
transmitters are clearly tagged with approvals. Refer to Section 5:
Specifications and Reference Data for a complete list of available approvals.
To maintain certified ratings for installed transmitters, install with applicable
installation codes and approval drawings.
NOTE
Once a device labeled with multiple approval types is installed, it should not
be reinstalled using any other approval types. Permanently mark the approval
label to distinguish it from unused approval types.
Do not apply torque directly to the electronics housing. Rotation between the electronics
housing and the process connection can damage the electronics. To avoid damage, apply
torque only to the hex-shaped process connection. Use a backup wrench on Process
Connection when installing an adapter.
Electronics
Housing
Process
Connection