Overview; Introduction - Honeywell OELD Operating Instructions Manual

OELD User Manual (3018M5000_1-3)

2 Overview

2.1 Introduction

OELD is an ATEX certified Ex d junction box for use with sensors that feature a 4-20mA output. The
sensor is Searchpoint Optima Plus or Searchline Excel. It provides a local visual status indication, and
a Bluetooth low energy interface for remote monitoring and configuration using mobile device. OELD
is ATEX approved for use in either Zone 1 (gas) or Zone 21 (dust) hazardous areas as well as cULus
approved for use in Class I Division 1 or Class II Division 1.
OELD has five entries – either M25 or NPT3/4. It is supplied with three Ex d certified blanking plugs.
Transport plugs are fitted to the other two entries, which must be replaced with a sensor, suitable
cable glands or blanking plugs before use.
Internally, the box has a continuity plate with two earth connection points, and a 12-way terminal
block. The OELD features a three-color backlit (green, yellow and red), and customized 7-segment
liquid crystal display. In operation, the LCD backlit provides a status indication as follows:
•
Green – Normal operation or Warning
•
Yellow – Fault or Inhibit
•
Red – Alarm (level is configurable)
•
Blue – BLE pairing / connection
Do not use the OELD LCD backlit status indication for safety-related purposes.
The OELD is configured using mobile device over Bluetooth Low Energy. The following parameters
can be configured:
•
Threshold for local alarm indicator (red lights)
•
4-20mA input level for local display
•
Gas name and measurement units for local display
WARNING
Revision 1, Issue 3