Honeywell 1309A0103 E3POINT NETWORK REPLACEMENT PCBA

XNX Transmitter

XNX has Worldwide hazardous area and performance approvals and is housed in

a flameproof enclosure that is available in either painted marine grade aluminum alloy

or stainless steel 316 versions. A large backlit multilingual LCD clearly indicates the unit’s

status using a combination of text, digits and icons. Users can modify its operation using

the LCD and magnet switches without ever needing to open the unit. An optional local

IS HART® terminal port is also available.

Both enable one man, non-intrusive, operation and reduce routine maintenance time and

costs. Local LEDs are also provided to indicate the unit’s status at a glance.

XNX Transmitter Sensor Compatibility

XNX is compatible with all of the Honeywell Analytics range of industrial fixed

gas sensors including Searchline Excel, Searchpoint Optima Plus, Sensepoint (HT and

PPM) and Model 705. For further information on these sensors, please refer to their individual

datasheets.

The Multi Purpose Detector (MPD) is a serviceable stainless steel sensor housing with

plug-in catalytic and infrared sensor cartridges. The catalytic sensors measure flammable

gases in the range 0-100%LEL and the infrared sensors measure Hydrocarbons in the

range 0-100%LEL, or Methane 0-100%LEL (or 0-5%Vol) and CO20-5%Vol. See the

specifications section for full details of the MPD sensor.

The XNX EC sensor is also a serviceable stainless steel sensor with a wide range of toxic

and Oxygen plug-in sensor cartridges. The XNX EC sensor interface to the XNX transmitter is

intrinsically safe, allowing the sensors to be ‘hot swapped’ without the need for a hot work

permit. This reduces the cost of ownership by reducing the cost and time to service

the detector.

XNX Transmitter Configuration

XNX has three basic personalities (configurations) which support different types of sensor. 

The personality boards and optional output interfaces are enclosed in the electronics POD

(Personality, Options and Display). The POD determines the XNX transmitter behaviour

based on the sensor type attached to it and the selected output options.

The mV (millivolt) personality is used for all mV signal input sensors including MPD,

Sensepoint HT, PPM and the Model 705.

The EC (Electrochemical cell) personality is for use with the XNX EC toxic and Oxygen

sensors. The IR (infrared) personality is for use with the Searchline Excel open path and

Searchpoint Optima Plus point infrared gas detectors.

The table below shows the three basic XNX transmitter configurations and the sensors

each supports.

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