EMERSON
Measurement Instrumentation
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Rosemount™ 485 Annubar™ Primary Element

The Rosemount 485 Annubar Primary Element has a patented T-shaped design for accurate flow over a wide range.

Built with a patented design, the Rosemount 485 Annubar Primary Element is an averaging pitot tube that delivers reliable measurement accuracy over a wide flow range. This sensor maintains a small profile in the pipe to reduce permanent pressure loss and increase energy savings. This T-shaped sensor is capable of temperature, pressure and flow measurements via a single pipe penetration.

Key Features

  • Patented T-shape sensor creates a fixed separation point for DP signal improvement over a wider flow rate
  • Sensor stagnation zone positioned to reduce noise, measurement inaccuracies and keeps particulates from clogging
  • T-shape design offers very low permanent pressure loss
  • Integral thermowell adds process temperature measurement without additional pipe penetrations
  • Lightweight design at large line sizes provides a cost-effective primary element solution