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Reference Manual
MAN-0081, Revision 4 July 2014
1
Section 1: Introduction
1.1 Models covered
The Net Safety JB series junction box is a multi-purpose junction box that is used with numerous Net
Safety products. It can be used as a termination box for flame detectors or for remote mounting gas
sensors from transmitters. It is available in copper-free Aluminum or 316 Stainless Steel.
Models covered:
• JB-IR3SAR - Used with IR3S-AR flame detectors to provide 4-20mA analog and relay outputs
• JB-MPD - Used for remote mounting of Millennium II combustible (SC3) and toxic (ST3) gas
sensors, Millennium combustible (SIR100) IR sensors, and APM sensors
• JB-MPG - General junction box used to separate Millennium toxic (ST2), Millennium combustible
(SC1100), and Gas Shield sensors from their transmitter
• JB-MPH - Used to separate the HART Port (HPT-001) from the HART device
• JB-MPNS - Used with the IR3S-A, UVS-A, and UV/IRS-A flame detectors and separated Millennium
toxic sensors (ST1); includes current loop test jacks
• JB-MPR - Used with UVS-AR and UV/IRS-AR relay models only
• JB-MPR3 - Used with IR3S-R relay models only
• JB-MPS - Used with UVS-A and UV/IRS-A flame detectors only, includes magnetic switch for
manual VI testing
1.2 Service support
Technical support for this product can be provided by contacting your local Emerson Process
Management/Net Safety representative or by contacting the Net Safety Technical Support
department at +1 866 347 3427 or safety.csc@emerson.com
.