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Honeywell XNX Universal Transmitter

Universal Transmitter

XNX’s modular design enables Honeywell Analytics to offer appropriate, cost effective solutions to a wide range of gas detection requirements. The XNX Universal Transmitter is an excellent choice for those who want a total integrated monitoring and safety solution for an industrial plant. With the XNX, you are freed from the need to add extra controllers, junction boxes, relays, monitors and other equipment accessories.

High performance
• Flammable gas detection 0 to 100% LFL/LEL
• Point IR with heated optics provides immunity to poisoning and no hidden faults
• Open-path IR flammable gas detection in LEL-m measurement
• Electrochemical cell offers toxic gas detection in ppm
• IR cell provides CO and combustible gas monitoring
• Robust and reliable operation in explosive areas and harsh environments

Flexible Operation
• 3 versions - supports mV (Catalytic Bead and IR Cell), Electrochemical Cell and IR (point and open-path) gas detection
• Multi-Purpose Detector (MPD) with field serviceable mV, Catalytic bead and IR Cell capability
• 4-20mA with HART® as standard
• Multiple communications options include up to 3 relays, MODBUS® and FOUNDATION® H1 Fieldbus (pending)
• Optional local IS port for handheld HART configurator

Easy to Use
• Large, backlit, easy-to-view LCD display offers multi-sensory indicators (visual icons, colored buttons, text, etc.) to display as and sensor readings
• User interface supported by 8 selectable languages (English, Spanish, German, Italian, Portuguese, French, Russian, Chinese)
• Self-test and fault indication features
• Non-intrusive, one-man operation
• Quick calibration with auto-inhibit

Easy to Install
• 3 or 4 wire operation, source, sink or isolated
• Use with conduit or cable installations
• Simple plug-in sensors and replaceable cells
• NEMA 4X IP66 rated for rugged indoor/outdoor use

Cost Effective
• Minimal training required
• One-man operation
• Plug-in sensor replacement
• All necessary accessories included

• Proven electrochemical sensing technology
• Surecell™ electrochemical cells are ideal for hot and humid environments
• Long life sensing cells (typical >2 years)
• Patented ‘Reflex’ sensing element verification diagnostics
• Sensor recognition software auto configures transmitter
• Plug and play factory configured sensors
• Intrinsically safe sensor connection permits hot swap, reducing down time

Catalytic Bead
• Supports Honeywell Analytics 705, 705HT, Sensepoint, Sensepoint HT and MPD sensors
• Fast response to wide range of hydrocarbons and flammables

Infrared (Open Path IR, Point IR, IR Cell)
• Supports Honeywell Analytics Searchline Excel, Searchpoint Optima Plus
• Failsafe operation
• Fast speed of response
• Reduced routine maintenance
• Immune to catalytic poisons
• Long operating life
• Works in inert atmospheres

Select a link under the "item" tab below to order.

Table 1Table 2Table 3Table 4Table 5Table 6
Table 1Agency Approval
Table 2Port Threads
T3/4” NPT
Table 3Enclosure
Table 4Sensor
Table 5Interface Option
FFoundationTM Fieldbus
Table 6Local HART®
HLocal HART®
XNX Transmitter:
Material: LM25 Aluminum, painted (SS316 painted optional)
Cable Entries: 5 conduits/cable entries – (2 right, 2 left, 1 bottom) Available in ¾” NPT, or M25
Termination: Cage Clamp pluggable Terminal Blocks with retaining screws, 0.5 to 2.5mm (12-28 AWG)
Mounting: Integral cast mounting tabs provide secure mounting to surfaces and channel. Can be mounted to 2 to 6 inch pipe or ceiling with corresponding mounting kit (optional)
User interface: Standard Custom Backlit LCD. 2.5” High Resolution DOT Matrix Display. Discrete Alarm and Status indication. Reliable Non-Intrusive 4 button interface magnetic wand access. Optional HART Handheld with IS Port
Signal: Standard HART over 3-wire 4-20mA (sink or source). Optional Modbus over RS-485 and Foundation Fieldbus
Temperature: -40°C to +65°C / -40°F to +150°F (sensor dependent
Humidity: 20 to 90% RH non-condensing
IP Rating: NEMA 4X IP66
Options: Form C and SPDT 3 Relays, 240 VAC, 5A (2 Alarm, 1 Fault) (Mutually exclusive with Modbus and Fieldbus Options)
Power: 18V to 32V (24V nominal)
Power Consumption: XNX used with: electrochemical sensor: 6.2 watts; millivolt (catalytic bead or IR cell): 6.5 watts; point Infrared sensor (Searchpoint Optima): 9.7 watts; open-path Infrared (Searchline Excel): 13.2 watts
Hazardous Area Approvals: UL: Class I, Div 1, Groups B, C, and D / Class 1, Zone 1 AEx d IIC T5 (Tamb -40°C to +65°C)
CSA*: Class I, Div 1, Groups B, C, and D T5 (Tamb -40°C to +65°C)
ATEX*: Ex II 2 G D, EEx [ia] IIC T5 (Tamb -40°C to +65°C)
Performance Approvals: UL: UL 913, UL 1203
CSA*: CSA 22.2 No. 152
ATEX*: Ex II 2 G D, EEx [ia] IIC T5 (Tamb -40°C to +65°C)
Other Approvals*: GOST, SIL 2, IECE61508, IECEx OD 005
Display Module & User Interface (Standard):
Display Type: Backlit LCD
Information Displayed:

Base Information: Gas Reading, Gas Name and Units of measurement, Fault and Alarm Status, Large Numeric concentration or LEL display, Bar graph showing current reading, set points and full scale.

Fault/Alarm and Operating Status Indication: Security settings allow multi level operator access for set-up, configuration and calibration  Event history stores Time and Date of all Alarm, Diagnostic, Configuration events

Interface: Magnetic wand with terminal screwdriver (supplied each unit)

• Offshore Oil & Gas production platforms
• Onshore Oil terminals
• Refineries
• Gas Transmission
• Gas Distribution
• LNG terminals
• Gas storage terminals
• Chemical plants
• Petrochemical plants
• Solvent recovery operations

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