Maintenance/Repair; Introduction; Preventive Maintenance; Inspecting And Cleaning Barrier Diaphragms - Honeywell OneWireless XYR 6000 User Manual

6.1

Introduction

This section provides information about preventive maintenance routines and replacing damaged parts.
The topics covered in this section are:
Preventive maintenance of the meter body barrier diaphragms and process piping to the transmitter.
Replacement of damaged parts such as the transmitter display/sensor and batteries.
6.2

Preventive maintenance

The XYR 6000 transmitter itself does not require any specific maintenance routine at regularly scheduled
intervals. However, you should consider carrying out these typical inspection and maintenance routines on
a schedule that is dictated by the characteristics of the process medium being measured and whether blow-
down facilities or purge systems are being used.
Check piping for leaks.
Clear the piping of sediment or other foreign matter.
Clean the transmitter's pressure chambers including the barrier diaphragms.
6.3

Inspecting and cleaning barrier diaphragms

Depending on the characteristics of the process medium being measured, sediment or other foreign
particles may collect in the process head cavity/chamber and cause faulty measurement. In addition, the
barrier diaphragm or diaphragms in the transmitter's meter body may become coated with a residue from
the process medium. The latter is also true for external diaphragms on flange mount and remote seal type
transmitters.
In most cases, you can readily remove the process head or heads from the transmitter's meter body to clean
the process head cavity and inspect the barrier diaphragm or diaphragms. For flange mount and remote seal
diaphragms, you may only need to run a purge line in the tank to rinse off the face of the diaphragm.
The procedure in Table 6-1 outlines the general steps for inspecting and cleaning barrier diaphragms. You
may have to modify the steps to meet your particular process or transmitter model requirements. Figure 6-1
shows an exploded view of a DP transmitter's meter body for reference.
WARNING
Risk of death or serious injury by explosion. Do not open transmitter
enclosure when an explosive gas atmosphere is present.

Tools required


5/8" Wrench or Socket for 7/16" Dia. Hex Bolt

3/4" Wrench or Socket for 7/16" Hex Nut

Calibrated torque wrench. For the most accurate performance, select a torque wrench with which the
applied torque value is near the middle of the tool's torque range. For example, if applying 68 N-M
(50 Lb-Ft), select a torque wrench with range of 7 N-M to 136 N-M (5 to 100 Lb-Ft).
Revision 3 OneWireless XYR 6000 ISA100.11a Compliant Pressure Transmitter User's Manual
March 2012

6. Maintenance/Repair

6. Maintenance/Repair
6.1. Introduction
35