Sensor Connection Options; Bos Sensor With Integral Rtd Via J-Box; Figure 15 - Bos Sensor With Integral Rtd Through Junction Box - Ametek OXYvisor Installation, Operation & Maintenance Manual

Section 4
Installation

4.10 Sensor Connection Options

Barben Optical Sensors (BOS) connect to the OXYvisor through a fiber optic cable connection. The fiber
optic cable from the OXYvisor is easily mated to the BOS oxygen sensor via a finger-tightened SMA coupler
connection, located in the lower sensor junction box (J-Box). The BOS sensor types, FlexSense and SafeTap,
each have an option for an integral RTD that may be selected for convenience depending on the application
details and requirements. Both integral and external RTD's can be connected to the OXYvisor through the Rear
(Wiring) Compartment and via the J-Box when the later connection is available. Figures 15, 16 & 17 show
some common arrangements for the OXYvisor and BOS sensors.

4.10.1 BOS Sensor with Integral RTD via J-Box

When the BOS sensor is specified with an integral RTD, and the OXYvisor model is selected with Agency
Approval "2", the RTD can also be connected through the J-Box via a Molex connector. See Figure 15.
The mating RTD Molex connection in the Junction Box is only available on OXYvisor models
with Agency Approval selection "2" (cULus CID2 and ATEX/IEC Zone 2 3G) per OXYvisor
Configuration - Product Model Number, Table 3.
USEFUL INFORMATION
Integral RTD's are located within the BOS sensor and may not give the desired accuracy in
certain applications. Avoid using integral RTD's in applications with large temperature changes
over short periods of time or in streams with low heat capacity (e.g. dry gas streams).
USEFUL INFORMATION
32
Installation, Operation and Maintenance Manual
Oxygen 01/06/2017 10:55 AM
% O2
� � 850.9 mBar
20.946
67.9°F
Err: 0
OXYvisor
 
ESC
 
ANALYZER FIBER
OPTIC SMA
CONNECTION IN
J-BOX
FIBER OPTIC SMA
TO SMA COUPLER
P/N: B3907-1122
BOS OXYGEN
SENSOR FIBER
OPTIC SMA
CONNECTION IN
J-BOX

Figure 15 - BOS Sensor With Integral RTD Through Junction Box

OXYvisor Optical Oxygen Analyzer
EXAMPLE - GENERAL ARRANGEMENT
OF OXYVISOR (General Purpose / Class I
Div. 2 / or Zone II 3G) and BOS SENSOR
WITH INTEGRAL RTD
ANALYZER RTD
MOLEX CONNECTION
IN J-BOX
BOS OXYGEN SENSOR
RTD MOLEX CONNECTION
IN J-BOX
BOS OXYGEN SENSOR
WITH INTEGRAL RTD
(SEE BOS DATA
SHEET FOR OPTIONS)
BOS-FLEXSENSE