2 Description and specifications
2.1 Features and applications
The 5081 includes the following features:
General: The Rosemount 5081 Explosion-Proof Transmitter is a loop powered device with a
robust design that serves several industrial, commercial, and municipal applications. It
offers a local operator interface (LOI) that can display values from a single measurement
input. This transmitter is compatible with a multitude of analytical sensors.
Analytical measurements: ph/ORP, contacting conductivity, toroidal conductivity,
dissolved oxygen, ozone, and chlorine
Maintenance features: Automatic 2 point buffer calibration routine, automatic recognition
of RTD, and sensor diagnostics
Diagnostics: Continuous monitoring of sensor performance along with warnings and fault
messages to alert the user of failures
Enclosure: Explosion-proof and corrosion resistant
2.2 General specifications
General specificationsTable 2-1:
Housing Cast aluminum with epoxy coating. NEMA 4X(IP65) and NEMA7B. Neoprene O-
ring seals.
Dimensions 6.3 x 6.9 x 6.4 in. (160.5 x 175.3 x 161.3 mm) See the engineering drawings in
Appendix A.
Conduit openings 3/4 in. FNPT
Ambient temperature -4 to 149 °F (-20 to 65 °C)
Storage temperature -22 to 176 °F (-30 to 80 °C)
Relative humidity 0 to 95% (non-condensing)
Weight / shipping weight 10 lb. / 11 lb. (4.5 kg / 5.0 kg)
Display First line: 7 segment LCD, 0.8 in. (20 mm) high. This line shows process varia-
bles (pH/ORP, contacting conductivity, toroidal conductivity, etc.)
Second line: 7 segment LCD, 0.3 in. (7 mm) high. This line shows process tem-
perature, output current, warnings, faults, and messages during calibration/
programming.
Display board can be rotated 90 degrees clockwise or counterclockwise if de-
sired.
Temperature resolution 0.1 °C
Hazardous location approval For details, see specifications for the measurement of interest.
Description and specifications
Instruction Manual 3
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