Honeywell XNX User manual

Quick Start Guide
XNX Universal Transmitter

XNX Universal Transmitter Quick Start Guide 3
WARNINGS
The XNX Universal Transmitter is certied and designed for installation and use »
worldwide in hazardous areas.
Installation must be in accordance with the recognized standards of the appropriate »
authority in the country concerned.
Access to the interior of the detector, when carrying out any work, must only be conducted »
by trained personnel.
Before carrying out any work, ensure local regulations and site procedures are followed. »
Appropriate standards must be followed to maintain the overall certication of the detector.
To reduce the risk of ignition of hazardous atmosphere, disconnect the equipment from »
the supply circuit before opening the detector enclosure. Keep assembly tightly closed
during operation.
Never open the XNX enclosure under power unless the area is known to be non hazardous.»
The detector must be earthed/grounded for Intrinsic Safety, electrical safety and to limit »
the effects of radio frequency interference. An earth/ground point is provided inside
and outside the unit. The internal grounding shall be used as the primary equipment
ground. The external terminal is only a supplemental bonding connection where local
authorities permit or require such a connection.
Take care when handling EC sensor cells as they may contain corrosive solutions.»
Do not tamper or in any way disassemble the sensor cells.»
Do not expose to temperatures outside the recommended range.»
Do not expose sensor to organic solvents or ammable liquids.»
At the end of their working life, sensors must be disposed of in an environmentally »
safe manner. Disposal should be according to local waste management requirements
and environmental legislation.
Alternatively, sensors may be securely packaged and returned to Honeywell Analytics »
clearly marked for environmental disposal.
Electrochemical cells should NOT be incinerated as they may emit toxic fumes.»
HAzARdouS LocAtIoNS INStALLAtIoN RequIRemeNtS (uL/cSA)
To reduce the risk of ignition of hazardous atmospheres, conduit runs must have a pour »
gland installed within 18 inches (457mm) of enclosure.
All ¾ inch NPT conduit, stopping plugs and adapters must be installed with 5 ¼ threads »
(minimum) engaged to Maintain Explosion Proof rating.
The XNX Cover Assembly must be fully seated to enclosure 9 threads (minimum) to »
maintain Explosion Proof rating.
Stopping Plugs supplied (Honeywell Part Number 1226-0258) are approved for use »
ONLY with the XNX Universal Transmitter.
For units tted with the Optional Relay Module: Relay Contact Ratings are 250 VAC »
5A, 24 VDC 5A Resistive Loads Only.
Use copper conductors only, 60/75»°C, terminal block screws should be tightened to
4.5 Lb/in maximum.
Reference XNX Control Drawing 1226E0402 for additional information regarding IS »
function (Local HART and EC Personality).
HAzARdouS LocAtIoNS INStALLAtIoN RequIRemeNtS (AteX)
Read and understand this manual before installation and use.»
Use only Certied M25 cable glands for installation.»
Shielded armoured cable is required for CE compliance.»

XNX Universal Transmitter Quick Start Guide
4
1 Mounting and Location of Detectors������������������������������������������������7
1�1 Mounting the XNX Universal Transmitter�������������������������������7
2 Wiring the XNX����������������������������������������������������������������������������������10
2�1 General Wiring Considerations���������������������������������������������10
2.2 Distance Considerations for Installation............................11
2�3 POD Connections�������������������������������������������������������������������14
2�4
4-20mA Output, Common Connections and Power����������������14
2�5 Terminal Block Connections �������������������������������������������������16
2�6 EC Personality Wiring ������������������������������������������������������������17
2.6.1 XNX Electrochemical (EC) Sensor Installation ..............19
2�7 mV Personality Wiring �����������������������������������������������������������21
2�8 IR Personality Wiring �������������������������������������������������������������25
2.8.1 Connecting a Searchpoint Optima Plus or Searchline
Excel ..............................................................................26
2.8.2 Connecting Generic mA Device.....................................29
3 Options����������������������������������������������������������������������������������������������32
3�1 Local HART® Handheld ����������������������������������������������������������32
3�2 Relays��������������������������������������������������������������������������������������33
3�3 Modbus® ����������������������������������������������������������������������������������������������������������������������������������������������� 34
4 Powering the XNX for the First Time�����������������������������������������������35
4�1 XNX Units Configured for EC, mV, and IR (except Searchline
Excel) �������������������������������������������������������������������������������������������� 35
4�2 XNX IR Units Configured for Searchline Excel��������������������36
4�3 Configuring the XNX Universal Transmitter�������������������������38
5 The XNX Front Panel ������������������������������������������������������������������������39
5�1 Controls and Navigation��������������������������������������������������������39
5�2 The General Status Screen����������������������������������������������������39
5�3 Entering the Menu Structure�������������������������������������������������41
5�4 Displaying Transmitter Information ��������������������������������������42
6 Gas Calibration Menu ����������������������������������������������������������������������42
6�1 Calibration ������������������������������������������������������������������������������43
6.1.1 Calibration Procedure ....................................................43
6.1.2 Zero and Span Calibration for XNX EC Sensors ...........45
6.1.3
Zero and Span Calibration of XNX EC Hydrogen Sulfide (H2S)
Sensors ........................................................................................... 45
6.1.4 XNX EC Sensor Operational Life...................................46
6.1.5
Zero and Span Calibration for MPD Sensors ............................46
6.1.6 Cross Calibration procedure for MPD-CB1....................48
6.1.7 Calibrating the 705/705HT .............................................50
6.1.8 Calibrating the Sensepoint/Sensepoint HT ....................50
Table of Contents

XNX Universal Transmitter Quick Start Guide 5
Table of Contents (cont’d)
6.1.9 Calibrating the Searchline Excel and Searchpoint Optima
Plus................................................................................50
6�2 Functional Gas Testing (Bump Test)�������������������������������������50
8 XNX Catalytic Bead and IR Replacement Sensor Cartridges�������53
9 Warning Messages ���������������������������������������������������������������������������53
10 Fault Messages�������������������������������������������������������������������������������57
11 Informational Messages ����������������������������������������������������������������67
12 Control Drawings ���������������������������������������������������������������������������69
13 XNX Labels��������������������������������������������������������������������������������������73
UL Certification Labels ����������������������������������������������������������������73
ATEX Certification Label �������������������������������������������������������������73

XNX Universal Transmitter Quick Start Guide
6

XNX Universal Transmitter Quick Start Guide 7
1 Mounting and Location of Detectors
cAutIoN
The location of the transmitters and sensors should be made in accordance with
any relevant local and national legislation, standards or codes of practice. Always
replace detectors with a detector of the same type. The detector should be mounted
where the gas is most likely to be present. The following points should be noted
when locating gas detectors.
Consider the possible damage caused by natural events e.g. rain or flooding•
when locating detectors.
Consider ease of access for functional testing and servicing.•
Consider how escaping gas may behave due to natural or forced air•
currents.
Note
The placement of detectors should be determined following the advice
of experts having specialist knowledge of gas dispersion, experts having
knowledge of the process plant system and equipment involved, safety and
engineering personnel. The agreement reached on the location of detectors
should be recorded.
1�1 Mounting the XNX Universal Transmitter
The XNX Universal Transmitter can be mounted in a number of different methods
using the integral mounting tabs.
Using the mounting tabs, the XNX can be attached to:
flat wall surface•
Unistrut• ®
With the optional Pipe Mount kit, the XNX can be mounted to pipe of diameter 2 to
6 in (50 to 150mm).
A ceiling mount bracket kit (1226A0358) is also available.
Integral Mounting Lugs
Figure 1. Integral Mounting Lugs and Optional Pipe and Ceiling Mounts

XNX Universal Transmitter Quick Start Guide
8
1.67"
42.41 mm
5.6"
124.24 mm
6.00"
15.4 mm
7.75"
196.85 mm 4.48"
113.8 mm
0.625"
15.88mm
2.054"
52.18mm
0.945"
24mm
1.2"
31.75mm
1.768"
44.90 mm
3.176"
80.67 mm
1.768"
44.90 mm
0.55"
14.35 mm
6.138"
158.75mm
Allow 11" 280mm
for Maint./Service
4"
101.6mm
6"
152 mm
w/sun shield
XNX with
Searchpoint Optima Plus
Allow
12"
305mm
For
Maintenance
Service
XNX with MPD or Local EC Sensor
Figure 2. XNX Universal Transmitter Mounting Dimensions and Clearances
WARNING
When the XNX is equipped with the optional Remote Mount Kit, the remote sensor
MUST be securely mounted to a xed position. The Remote Sensor Kit is not intended
to be used as a hand-held detector.

XNX Universal Transmitter Quick Start Guide 9
The XNX is configured with 5 cable/conduit entries built into the housing for wiring and
mounting sensors. Figure 3 provides the guidelines to proper installation of the XNX.
Note
While relay wiring can use any
available cable/conduit entry in
the XNX enclosure, do not use the
same cable/conduit entry for both
relay reset and relay signal lines to
avoid electrical noise.
Option Position
Local HART®Option B
MPD, 705 Series, Sensepoint Series C
Catalytic Bead Sensor C
Searchpoint Optima Plus A or E
Searchline Excel Typically C
Remote Sensor Connection (except EC ) Any remaining
Searchpoint Optima Plus - Remote Any remaining
Modbus®Any remaining
Relays Any remaining
Power Any remaining
A
E
D
B
C
*
* Limited access due to
IS barrier if equipped with
electrochemical cell.
Figure 3. XNX Universal Transmitter Cable/Conduit Entry Assignments
Integral Mounting Lugs
Figure 4. Integral Mounting Lugs and Optional Pipe and Ceiling Mounts

XNX Universal Transmitter Quick Start Guide
10
2 Wiring the XNX
Personality circuit boards determine the XNX behavior based on the sensor type
attached to the XNX interface.
The table below defines the three XNX transmitter configurations and the sensors
each support.
XNX IR Personality XNX EC Personality
Searchline Excel Searchpoint Optima Plus Local/
Remote XNX EC Sensor
Generic mA Sensors XNX EC Sensor Remote Mount Kit
XNX mV Personality
705 Local / Remote MPD Local (cat bead and IR) Sensepoint Local / Remote
705HT Local / Remote MPD Remote Sensepoint PPM Local/Remote
Sensepoint HT Remote
cAutIoN
Before wiring the XNX, conrm the correct personality boards and options are
installed.
2�1 General Wiring Considerations
For proper operation of the XNX Universal Transmitter and Sensor Technologies,
consideration of wiring induced voltage drops, transient electrical noise and dissimilar
Earth ground potentials is imperative in the design and installation of the system.
Note:
To maintain EMC integrity, wiring must be shielded by either an integral shield
or run through conduit or pipe. Shield should provide 90% coverage.
Loading
Wiring for DC Power, 4-20mA Signal, remote wiring to sensors must be sized
sufficiently to provide sufficient voltages for the line length and the loads that will
be used.
Isolation
Isolating power and signal carrying conductors is recommended.
Circuit Protection
Supply circuits must provide over current protection. Class 2 power supplies are
required for 24 volt DC supply. Consider Inrush current in specifying any DC supply.
Power supply range is 16 to 32 VDC for EC and mV versions, 18 to 32 VDC for

XNX Universal Transmitter Quick Start Guide 11
Searchpoint Optima Plus and Searchline Excel and 16 to 32 VDC dependent on
the limitations of device for the generic 4-20mA input.
Loads
The use of High Inrush or Inductive loads may affect the performance of the XNX.
For best reliability use resistive loads only.
2�2 Distance Considerations for Installation
Types of Installations
There are three basic types of installation: a single transmitter; multiple transmitters
connected to a single power source; and multiple transmitters connected in a “daisy-
chain” configuration.
Power Source Selection
The power requirements for different transmitter configurations are:
XNX EC (Toxic): 6.2 watts•
XNX mV (Catalytic): 6.5 watts•
XNX IR with Searchpoint Optima Plus: 9.7 watts•
XNX IR with Searchline Excel: 13.2 watts•
Wire Selection
The type of wire used for connections has an effect on the distance of the
installation. This is because some of the voltage is lost in the wire on the way to
the transmitter.
Single Transmitter Distances
For installations that have dedicated wiring between the transmitter and the power
supply, use the following chart. These distances assume stranded wire is used.
Class 2
Power Supply
Class 2
Power Supply
OR
Single Transmitter Distances
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
1140 feet
[347 meters]
1810 feet
[551 meters]
2890 feet
[880 meters]
4620 feet
[1408 meters]
XNX IR with
Searchpoint Optima Plus
660 feet
[201 meters]
1060 feet
[323 meters]
1690 feet
[515 meters]
2690 feet
[820 meters]
XNX IR with
Searchline Excel
550 feet
[168 meters]
890 feet
[270 meters]
1410 feet
[430 meters]
2260 feet
[690 meters]
Note
If multiple transmitters are using the same power supply, make sure the
power supply wattage rating is high enough to power all transmitters
simultaneously.

XNX Universal Transmitter Quick Start Guide
12
“Daisy-Chained”Transmitter Distances
A few selected scenarios are presented here to provide a base to work from.
Class 2
Power Supply
“d”
“d”
“d”“d”“d”
Transmitter 1 Transmitter 2 Transmitter 3 Transmitter 4 Transmitter 5
Several transmitters equally spaced from themselves and the power source.1.
2 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
380 feet
[115 meters]
600 feet
[183 meters]
960 feet
[292 meters]
1540 feet
[469 meters]
XNX IR with
Searchpoint Optima Plus
220 feet
[67 meters]
350 feet
[106 meters]
560 feet
[170 meters]
900 feet
[274 meters]
XNX IR with
Searchline Excel
185 feet
[56 meters]
295 feet
[90 meters]
470 feet
[143 meters]
750 feet
[229 meters]
3 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
190 feet
[58 meters]
300 feet
[91 meters]
480 feet
[146 meters]
770 feet
[234 meters]
XNX IR with
Searchpoint Optima Plus
110 feet
[33 meters]
175 feet
[53 meters]
280 feet
[85 meters]
450 feet
[137 meters]
XNX IR with
Searchline Excel
90 feet
[27 meters]
145 feet
[44 meters]
235 feet
[71 meters]
375 feet
[114 meters]
4 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
110 feet
[33 meters]
180 feet
[55 meters]
290 feet
[88 meters]
460 feet
[140 meters]
XNX IR with
Searchpoint Optima Plus
65 feet
[20 meters]
105 feet
[32 meters]
165 feet
[50 meters]
270 feet
[82 meters]
XNX IR with
Searchline Excel
55 feet
[17 meters]
85 feet
[26 meters]
140 feet
[43 meters]
225 feet
[68 meters]
5 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
75 feet
[23 meters]
120 feet
[36 meters]
190 feet
[58 meters]
300 feet
[91 meters]
XNX IR with
Searchpoint Optima Plus
45 feet
[13 meters]
70 feet
[21 meters]
110 feet
[33 meters]
180 feet
[55 meters]
XNX IR with
Searchline Excel
35 feet
[11 meters]
55 feet
[17 meters]
90 feet
[27 meters]
150 feet
[46 meters]

XNX Universal Transmitter Quick Start Guide 13
Several transmitters installed in pairs with each pair equally spaced from2.
themselves and the power source. These distances assume the paired
transmitters are installed within 10 feet [3 meters] of each other.
Class 2
Power Supply
“d”“d”“d”
Transmitters 1 and 2 Transmitters 3 and 4 Transmitters 5 and 6
2 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
485 feet
[147 meters]
775 feet
[235 meters]
1230 feet
[292 meters]
1970 feet
[600 meters]
XNX IR with
Searchpoint Optima Plus
380 feet
[115 meters]
600 feet
[180 meters]
960 feet
[290 meters]
1540 feet
[470 meters]
XNX IR with
Searchline Excel
280 feet
[85 meters]
440 feet
[134 meters]
700 feet
[213 meters]
1130 feet
[344 meters]
4 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
190 feet
[58 meters]
300 feet
[91 meters]
480 feet
[146 meters]
770 feet
[234 meters]
XNX IR with
Searchpoint Optima Plus
110 feet
[33 meters]
175 feet
[53 meters]
280 feet
[85 meters]
450 feet
[137 meters]
XNX IR with
Searchline Excel
90 feet
[27 meters]
145 feet
[44 meters]
235 feet
[71 meters]
375 feet
[114 meters]
6 Transmitters - Distance “d”
18 AWG
[1.0 mm2]
16 AWG
[1.5 mm2]
14 AWG
[2.0 mm2]
12 AWG
[3.5 mm2]
XNX mV or EC
With Sensor
95 feet
[33 meters]
150 feet
[45 meters]
240 feet
[73 meters]
385 feet
[117 meters]
XNX IR with
Searchpoint Optima Plus
55 feet
[17 meters]
85 feet
[26 meters]
140 feet
[42 meters]
225 feet
[68 meters]
XNX IR with
Searchline Excel
45 feet
[14 meters]
70 feet
[21 meters]
115 feet
[35 meters]
185 feet
[56 meters]

XNX Universal Transmitter Quick Start Guide
14
2�3 POD Connections
The illustration in Figure 5 details the connections available on each of the terminal
blocks for each type of personality board.
J1 - Remote HART®Connector Only
Personality
Boards
Option
Boards
A
B
C
D
E
F
Figure 5. XNX Personality Board
Terminal Block Legend
Table A Table B
Board Type Function S1 S2 Board Type Connection Function
EC Personality
4-20mA
Output
Source   EC Personality
TB1
Power, 4-20mA
mV Personality Sink  
mV Personality Power, 4-20mA,
Sensor
IR Personality Isolated  
IR Personality
Power, 4-20mA,
IR Power and
Signal
Table C Table D
Board Type Function S3 S4 Board Type Connection Function
IR Personality IR 4-20mA
Input
Source   EC Personality J2 EC IS Barrier
Sink   IR Personality TB2 Com A and B
Table E Table F
Board Type Connection Function Board Type Connection Function
Relay TB4 Remote Reset
Connector Relay TB3 Relay Output
Modbus®SW5 Bus Loop
Terminators Modbus®TB3 Data Connection
2�4 4-20mA Output, Common Connections and Power
Setting 4-20mA operation; S1 & S2
The XNX Universal Transmitter allows the user to configure the 4-20mA output to Sink,
Source or Isolated mode operation via two programming switches on the POD. The
table below shows the S1 and S2 setting and corresponding output configuration.
S1 S2
Source Down Up
Sink Up Down
Isolated Down Down

XNX Universal Transmitter Quick Start Guide 15
Power and 4-20mA connections are made at TB-1 and are identical for the EC , IR and
mV Personality Boards. For user convenience a second set of Terminals have been
provided to eliminate the need for a secondary junction box in multi node systems.
Controller
+VE
Signal
-VE
RL
1
2
3
1-1
1-5
1-3
+V
+mA
-V
XNX
XNX Sink Configuration
Current
Flow
Figure 6. Sink wiring for XNX
XNX Source Configuration
Controller
+VE
Signal
-VE
RL
1
2
3
1-1
1-6
1-3
+V
-mA
-V
XNX
Current
Flow
Terminate cable screen at the detector or controller, not both.
Figure 7. Source wiring for XNX
Controller
+V1
+V2
-V2
1-1
1-5
1-6
+V
+mA
-V
XNX
1-3
-mA
-V1
XNX Isolated Configuration
Figure 8. Isolated wiring for XNX

XNX Universal Transmitter Quick Start Guide
16
The XNX Universal Transmitter power consumption is dependent on the sensor and
options for the specific configuration. The input voltage must be maintained at 16 to
32 volts DC for proper operation - sensor dependant.
The table below defines the XNX typical and maximum power consumption based on
configuration:
Conguration Max
Power Inrush
XNX EC 6.2 w <1A, <10ms@24VDC
XNX mV 6.5 w <750mA <2ms@24VDC
XNX IR 13.2w <1A, <1sec@24VDC
2�5 Terminal Block Connections
Customer connections to the XNX are made via pluggable terminal blocks secured
to the back of the POD. The terminal blocks are keyed and polarized. A color coded
label is affixed to assist in wiring when the block is removed from the POD.
The terminals are suitable for use with 12 to 28 AWG or 0.8 to 2.5mm wire. Wire
insulation must be stripped 5/16 (0.312) inches or 8mm. Tighten each terminal to
a maximum of 4.5 in/lbs. Depending on Personality and Option one to ten position
terminal blocks are supplied.
Two terminal block jumpers are provided to provide an electrical connection without
connection to the Personality Board. Install the jumpers between pins 1 and 2 and
between pins 3 and 4 to support multi-node wiring.
Note:
Pins 2 and 4 of terminal block TB1 have no internal connection on the
personality board. When used in conjunction with the terminal block
jumpers, pins 2 and 4 can provide additional 4-20mA connections or power
feed for daisy-chained units.
TB-1 Terminal Block
Terminal Block Jumper
IN OUT
Figure 9. Pluggable Terminal Block and Terminal Block Jumper

XNX Universal Transmitter Quick Start Guide 17
2�6 EC Personality Wiring
WARNING
When the XNX is equipped with the optional Remote Mount Kit, the remote sensor
MUST be securely mounted to a xed position. The Remote Sensor Kit is not
intended to be used as a hand-held detector.
Position EC
TB1
1+24
2
30v
4
J1 - Local HART Connector
S1 and S2 - Signal Output
Jumper Switch
▼▼
▲
S2S1
Isolated
▼
Sink
▼
▲
Source
XNX EC TB-1
J2 - EC Barrier Connector
HART
20 mA
Operation
LOCAL
J1
S1
S1
Source
Sink
Isolated
S2
S2
EC Barrier J2
+V 1-1
EC TB-1
4-20mA
HART
16-32 VDC
6.2W max.
1-2
-V 1-3
1-4
+mA 1-5
-mA 1-6
123456
Figure 10. XNX EC Personality Board Terminal Blocks and Jumper Switches and
Terminal Block Assignments
cAutIoN
Be certain to dress the wires properly to ensure cabling does not contact switches
1-2 on the back of the POD.
Do not force the POD into the enclosure as it may indicate an interference condition
resulting in damage to the wiring, POD or switch settings.

XNX Universal Transmitter Quick Start Guide
18

EC
Adaptor
Optional Local HART
IS Barrier must
be connected to J1
EC IS Barrier must
be connected to J2
4
3
2
1
-
+
6
5
J1 HART
S1 S2
J2 EC Barrier
TerminalBlock 1
Local HART
IS Barrier
(optional)
HART
Adaptor
EC IS Barrier
Sensor Cartridge
Weatherproof Cap
Sensor Retainer
Sensor Cartridge
Weatherproof Cap
Sensor Retainer
Local Sensor Mounted to Transmitter
Sensor Mounted to
Remote Sensor Kit
Figure 11. EC Personality Wiring
Note:
Reference Control Drawing 3000E3157 for install requirements on EC cells
and remote mounting.

XNX Universal Transmitter Quick Start Guide 19
2�6�1 XNX Electrochemical (EC) Sensor Installation
cAutIoN
For biased sensors (e.g. Nitrogen Dioxide) remove the sensor stabilizer from the
bottom of the sensor prior to installation.
Using Figure 12 as a guide, follow the procedure below:
Check that the label on the new sensor is the correct gas type.1.
Unscrew the weatherproof cover, loosen the retainer locking screw with the2.
supplied hex key and unscrew the sensor retainer.
Plug in the new sensor taking care to align the sensor pins with the3.
connector.
Refit the sensor retainer, tighten the locking screw with the supplied hex4.
key and refit the weatherproof cover.
Countdown time of up to 180 seconds (dependent on sensor type) is5.
displayed.
Acknowledgement of the gas type will be required before proceeding. For6.
more information on setting gas type, see the XNX Technical Manual Section
2.51 Gas Selection.
After the sensor is installed and the gas type is confirmed, the Range, alarm7.
levels and other important settings must be set; see appropriate section in
Section 4 - Powering the XNX for the First Time.
Once the XNX has been configured, calibrate the detector following the8.
procedures in Section 6.1 - Calibration.
Transmitter
Sensor Retainer &
Locking Screw
2
1
3
4
5
New Sensor
Weatherproof Cap
Figure 12. Installing Plug In Sensor

XNX Universal Transmitter Quick Start Guide
20
XNX EC Sensor Remote Mounting Kit
The remote sensor mounting kit is used to remotely mount the sensor from the
transmitter. To remotely mount the sensor, follow the procedure below.
Unscrew the weatherproof cover, loosen the retainer locking screw and1.
unscrew the sensor retainer.
Remove the sensor by pulling without twisting.2.
Plug the remote sensor cable connector into the bottom of the transmitter.3.
Route the cable to the location where the remote sensor is to be mounted.4.
If necessary, cut the cable to the required length.5.
cAutIoN
Take care not to cut the cable too short. Once cut, additional lengths of cable
cannot be added as this will invalidate the intrinsically safe certication. It is
also recommend that a loop of cable is made at the junction box to allow slack
for any future re-termination.
The enclosure of the remotely mounted sensor contains aluminum. Care must
be taken to avoid ignition hazards due to impact or friction when installed in the
Zone 1 location.
All cable entry devices and blanking elements shall be certied in type of explosion
protection ameproof enclosure “Ex e”, suitable for the conditions of use and
correctly installed.
Mount the remote sensor junction box ensuring enough room below to fit6.
the sensor and weatherproof cover.
Attach the cable to the remote terminal box via the gland provided.7.
Make the wiring connections as shown in Figure 13.8.
Fit the terminal box lid.9.
Plug the sensor into the socket at the bottom of the terminal box.10.
Fit the sensor retainer, tighten the locking screw and fit the weatherproof cover.11.
Calibrate the detector following the procedure12. s in Section 6.1 - Calibration .