Table A-16: Minimum Detectable Upper Product Thickness
Probe type Minimum Detectable Upper Product Thickness
Large coaxial 1 in. (2.5 cm)
(1)
Single lead 2.4 in. (6 cm)
Twin lead 5.1 in. (13 cm)
Coaxial (standard/HP/C) 2.8 in. (7 cm)
Coaxial (HTHP) 8 in. (20 cm)
(1) Depending on application characteristics such as the upper product dielectric constant.
Sometimes there is an emulsion layer (mix of the products) between the two products
which can affect interface measurements. For guidelines on emulsion situations, consult
your local Emerson representative.
For additional information, see the Guided Wave Radar Interface Measurement Technical
Note.
Related information
Interface measuring range
A.2.15
High pressure steam applications
Considerations
Saturated steam under high pressure can influence radar level transmitter measurements.
Rosemount 5301 with Dynamic Vapor Compensation will automatically compensate for
this and maintain the level accuracy.
• Probe type 3V (for 3- to 4-in. chambers) or 4U (for 2-in. chambers) must be used.
• Mount in a 2-, 3-, or 4-in. bypass chamber with flanges appropriately sized for the
pressure and temperature of the application.
• Dynamic Vapor Compensation requires a minimum distance X from the flange to the
surface level in order to measure the change in the vapor dielectric constant. If the level
rises within this area, the unit switches over to static compensation, using the last
known vapor dielectric constant.
Table A-17: Minimum Distance X
Reference reflector type Minimum distance X
Length Option code
Short, 14 in. (350 mm) R1 22 in. (560 mm)
Long, 20 in. (500 mm) R2 28 in. (710 mm)
Specifications and reference data Reference Manual
April 2019 00809-0100-4530
298 Rosemount 5300 Level Transmitter
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