Emerson Rosemount 326L, Быстрый старт

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2.2.5 Installing in a plastic tank
Follow these guidelines when installing the level transmitter in a plastic tank or in a metal
tank with a plastic lid.
D1: Minimum 5.91 in (150 mm)
R: Launching plate
• The plastic lid must have a drill hole with a minimum diameter of 5.91 in (150 mm).
• Use a metal flange plate or launching plate (R) that sufficiently covers the drill hole. For
more information, see
Operation with a single probe .
• Ensure that the distance between the probe and the tank wall is at least 3.15 in (80
mm). Adhere to the installation instructions in
Installation considerations . If necessary,
perform a tank adjustment.
CAUTION
When installed in plastic tanks, there may be deterioration caused by electromagnetic
interference from other devices. Follow these guidelines to avoid deterioration:
• Apply a metal foil to the outside of the tank.
• Apply a shielding screen between the level transmitter and other electronic units.
• Install in a metal pipe only if hygienic requirements are met. For more information, see
Installation considerations .
2.2.6 Installing with 3-A
®
standards
The level transmitter is authorized to display the 3-A symbol. Follow these guidelines to
ensure 3-A compliance when installing the level transmitter.
• Ensure that the transmitter is installed according to 3-A standards.
• Use the level transmitter only with 3-A certified adapters marked with the 3-A symbol.
• The process connection must have a self-draining leakage port. 3-A certified adapters
all have self-draining leakage ports.
• Choose an installation position where the probe and process connection can be
cleaned with a spray ball.
Quick Start Guide Installation
00825-0100-4326 January 2019
Quick Start Guide 21