Emerson Rosemount 385+ -02, Справочное руководство, Страница: 11 / 42

Installation 5
Section 2: Installation
Reference Manual Installation
00809-0100-3386 February 2019
2.1 Unpacking and Inspection
Inspect the outside of the carton for any damage. If damage is detected, contact the carrier
immediately. Inspect the instrument and hardware. Make sure all items in the packing list are
present and in good condition. Notify the factory if any part is missing.
2.2 Mechanical Installation
The Rosemount 385+ is available in two versions, the retraction version (Code 02) and the
insertion/submersion version (Code 03, & 04). Please refer to the appropriate section below.
2.2.1 Retraction Option (Code option 02)
The Rosemount 385+ sensor may be installed through a weldalet or in a pipe tee or “Y”, as shown
in Figure 2-1, when used with a ball valve. Insert the end of the sensor to a depth sufficient to ensure
that the glass bulb is continuously wetted by the process fluid.
The sensor can also be inserted directly into the process without the use of a ball valve for
applications not requiring continuous operation during sensor maintenance (Figure 2-2).
Allow sufficient room for safe retraction and insertion of the sensor. personnel should have room
for stable footing while performing removal or insertion of the sensor.
The sensor must be mounted within 10-90 degrees of the horizontal with the tip pointed
downward, thus keeping air bubbles out of the pH sensitive glass bulb. Bubbles settled in the glass
bulb disrupt the electrical continuity between the pH sensitive glass and the silver/silver chloride
measuring element.
If the retraction version is to be installed without a ball valve follow the installation procedure for
insertion service (Section 2.2.2). Perform the following steps for sensor installation through a ball
valve:
1. Carefully remove the liquid filled rubber boot which protects the glass electrode and keeps
the liquid junction wet during shipping and storage. Discard the liquid and boot. Make
sure the lubricated O-ring is in place in the groove inside the male connector on the sensor
body (Figure 4-1, item A).
WARNING
Glass electrode must be wetted at all times (in storage and in line) to maximize sensor life.
Save the original packing cartons and materials as most carriers require proof of damage due to mishandling,
etc. Also, if it is necessary to return the instrument to the factory, you must pack the instrument in the same
manner as it was received. Refer to Section 6.0 for instructions.
NOTICE
Buffer solution, in the vinyl boot, may cause skin or eye irritation.
CAUTION