Rosemount 3812

Ideal for check metering and allocation, the economical Rosemount 3812 Two-Path Liquid Ultrasonic Flow Meter features two mid-radius, parallel-plane measurement paths that minimize measurement uncertainty caused by disturbed flow profiles. The meter is equipped with ultra-fast Rosemount 3810 Series Electronics that further enhance measurement stability and accuracy by minimizing sensitivity to changes in the flow profile, solids and/or entrained air. The intuitive operator interface within MeterLink Software helps operators identify costly flow disturbances and meter performance issues in real time to improve measurement and maintenance practices.

Specifications

Line Sizes	DN100 to DN900 (4-in to 36-in)
Fluid Type	Liquid
Linearity	±0.3% of measured value over a 1.2 to 12.2 m/s (4 to 40 ft/s) range
Repeatability	±0.10% of measured value
Velocity	1.2 to 12.2 m/s (4 to 40 ft/s) with an extended range of 0.3 to 14.6 m/s (1 to 48 ft/s)
Operating Temperature Range	Transducers: -50°C to +100°C (-58°F to +212°F) or optional -50°C to +150°C (-58°F to +302°F)
	Electronics: -40°C to +60°C (-40°F to +140°F)
Operating Pressure Range	0 to 155 Bar (0 to 2,250 psig)
Materials	Carbon steel and stainless steel
Calibration	Conducted in Emerson’s ISO 17025 certified flow calibration laboratory

Features

Reduce flow profile, solids and/or entrained gas change sensitivity with ultra-fast Rosemount 3810 Series Electronics
Monitor flow analysis and receive an intuitive view of meter health with integrated MeterLink Software
Use predictive diagnostics and process variable information to detect issues and avoid process upsets and downtime
Minimize maintenance time and costs with no moving parts to wear and tear
Facilitate maintenance with field-replaceable, non-wetted transducers
Streamline facility design and installation with wide flow range and bi-directional flow capabilities
Increase I/O with new Type 4 CPU Module with up to six frequency or digital outputs