Emerson 2120 Quick Start Manual page 27

December 2016

3. Inspection and maintenance of the level switch shall be carried out by suitably

trained personnel, in accordance with the applicable standards and code of

practice.

4. If the level switch is installed in a stub then, to ensure clean-ability, the length

(L) must not exceed the diameter (D) with a minimum diameter of 46 mm.

If the stub diameter is < 46 mm then L < 2 * (D - 23).

L

5. The certification of the level switch relies upon the following materials used in

its construction:

Product contact surfaces

Probe:

d. Non-product contact surfaces:

Enclosure (Metal):

Enclosure (plastic):

Seals:

Cable entry devices:

6. It is the responsibility of the user to ensure:

a. The materials listed in instruction

(sanitizing) processes.

b. The level switch installation is drainable and cleanable.

c. That the joint requirements between the probe and the vessel/pipe are

compatible with the process media, applicable standards and code of

practice.

In EHEDG applications, the seals (gaskets) used shall be defined as in the

EHEDG position paper "Easy cleanable pipe couplings and process

connections".

d. That only suitable cable entry devices will be utilized when connecting the

level switch to maintain IP66.

e. That any unused cable entries are sealed with suitable stopping plugs to

maintain IP66.

7. The level switch is suitable for Cleaning-In-Place (CIP) up to 160 °F (71 °C).

8. The level switch is suitable for Steaming-In-Place (SIP) up to 275 °F (135 °C).

D

Stainless steel 316/316L

Aluminum alloy ASTM B85 360.0 or ANSI AA360.0

Glass-filled (30%) nylon 66

Silicone, Nitrile rubber and polyethylene

Nylon (PA6)

5

are suitable for the media and cleaning

Quick Start Guide

27