HALO LED Junction Box
Infrared Transmitters

HALO is an ATEX/IECEx certified EX e junction box for use with Searchpoint Optima Plus, providing a local visual status indication at a glance
Features & Benefits
Clear device status provides enhanced safety
Suitable for wide range of applications
ATEX / IECEx hazardous area approval
Quick Specs
Alarm Range: 10 to 65%FSD in 5% increments
Operating Temperature: -40 °C to 65 °C

HALO is RoHS compliant

Product Overview

The HALO Junction Box enhances the Searchpoint Optima Plus point infrared Hydrocarbon gas detector* by providing a local display showing the sensor status at a glance, even from a distance. It also gives convenient, non-intrusive interaction with a HART® handheld device through an optional intrinsically safe (IS) HART® connection point.

HALO uses three instantly recognisable ‘traffic light’ colours to indicate its status. The LED light ring shows green to indicate normal operation, yellow to indicate a fault / inhibit and flashes red to indicate an alarm. This allows anyone in the area to clearly and immediately see the status of any detector. This can be particularly useful to identify operational status if the detector is located in a difficult to access area.

HALO is an ATEX / IECEx certified Ex e junction box for use with Searchpoint Optima Plus. It provides a local visual status indication, and an optional intrinsically safe non-intrusive HART® handheld device interface, for sensors that support HART® communication. It is suitable for use in either Zone 1 (gas) or Zone 21 (dust) hazardous areas.

HALO has three M20 cable entries and one M25 sensor entry. Internally, the box has a continuity plate with two earth connection points, and a 12-way terminal block.

The box lid has a three colour light ring (green, yellow and red), and optional connections for a HART® handheld device.

Additional Features and Benefits:

Easy to use
• Clear device status provides enhanced safety
• Easier to locate a unit in fault / warning – reduces time for maintenance
• Allows convenient connection of a HART® handheld device
• No hot work permit required to connect handheld device

Local display
• LED light ring indicates status at a glance: -
- Green – Normal
- Red – Alarm
- Yellow – Fault / Inhibit
• Simple configuration of alarm point and LED brightness

Suitable for wide range of applications
• Can be mounted in highly visible location
• Detector can be mounted remotely from HALO
• Backwards compatible with Searchpoint Optima Plus
• ATEX / IECEx hazardous area approval
• Ex e enclosure
• One M25 sensor entry, three M20 cable entries

Easy to Install
• Optional pipe mounting bracket
• Optional sunshade
• Optional retrofit adaptor plate

HALO LED Junction Box
with optional HART® Port
The box is configured using a magnetic switch.
A magnet is incorporated into the blanking cap
which screws into the middle of the box lid
when not in use. The following parameters can
be configured: -
• Threshold for local alarm indication (red
lights) can be set between 10 % and
65 %FSD
• Brightness of green LED lights can be set
to Full Power, Half Power or Off

Searchpoint Optima Plus
Output Light Ring Status
Less than 1.5 mA Flashing Yellow Fault
1.5 to 2.5 mA Steady Yellow Inhibit
2.5 to 3.5 mA Flashing Green Warning
3.5 mA to Alarm Threshold* Steady Green** Normal
Greater than Alarm Threshold* Flashing Red Hazardous Gas
Concentration
*Configurable between 10 and 65 %FSD
**Configurable to Full Brightness, Half Brightness or Off

Technical Summary HALO Junction Box
Use HALO is an ATEX/IECEx certified Ex e junction box for use with Searchpoint Optima Plus sensors. It provides a local status display, and an optional non-intrusive HART®
 interface for sensors that support HART® communication. It is suitable for use in either Zone 1 (gas) or Zone 21 (dust) hazardous areas.
Features
Display LED light ring – Red, Green, Yellow LED indication
Alarm Range 10 to 65%FSD in 5% increments
Environmental
Operating Temperature -40 °C to 65 °C
Operating Pressure 80 to 120 kPa
Operating Humidity 0 to 99 %RH (non-condensing)
Electrical
Supply Voltage 18 to 32 Vdc
Power Consumption 1 W maximum
Insertion Loss ~25 Ω
Mechanical
Material Glass filled polyester, static dissipative
Weight 1.7 kg
Ingress Protection IP66/67
Certification
ATEX / IECEx Baseefa 12ATEX0017 II 2 GD IECEx BAS 12.0011 Ex e ia mb IIC T5 Gb -40°C to +65°C Ex ia tb IIIC T100 °C Db
EMC EN 50270:2006
RoHS HALO is RoHS compliant
Performance EN 60079-29-1 Approved Accessory
Terminal Module Connections
Terminal
Number
Description Field Wiring Searchpoint
Optima Plus Wiring
Lid Wiring
1 spare
2 +V supply +24 V +24 V (red)
3 +V supply +24 V
4 mA loop mA output mA (white)
5 mA loop mA output mA (white)
6 -V supply 0 V 0 V (black)
7 -V supply 0 V
8 spare
9 spare
10 spare
11 spare
12 spare
Earth Earth
Searchpoint Optima Plus
LID
To Controller
RED
WHITE
BLACK
WHITE
+V
4-20mA
0V
EARTH
+24V
mA
mA
0V
+24V
4-20mA
0V
Ordering Information
Instruments Spares
2308B0903 HALO junction box ATEX/IECEx 2308B0970 Lid assembly – HALO ATEX/IECEx
2308B0941 HALO junction box Inmetro* 2308B0971 Lid assembly – HALO Inmetro*
2308B0947 HALO junction box GOST* 2308B0972 Lid assembly – HALO GOST*
2308B0953 HALO junction box CCCF* 2308B0973 Lid assembly – HALO CCCF*
2308B0900 HALO junction box with HART® connection ATEX/IECEx 2308B0974 Lid assembly – HALO with HART® connection ATEX/IECEx
2308B0940 HALO junction box with HART® connection Inmetro* 2308B0975 Lid assembly – HALO with HART® connection Inmetro*
2308B0946 HALO junction box with HART® connection GOST* 2308B0976 Lid assembly – HALO with HART® connection GOST*
2308B0952 HALO junction box with HART® connection CCCF* 2308B0977 Lid assembly – HALO with HART® connection CCCF*
Accessories 2308B0978 Blanking cap / magnet assembly including lanyard
2308B0934 HALO Sunshade 2308B0924 Terminal block spares assembly
2308B0930 Adaptor Plate Kit 2308B0969 Service spares kit
2308B0923 Pipe Mounting Bracket Kit * Contact Honeywell Analytics for availability