Oxygen Transmitter - SenzTx

·Gas generation (oxygen / nitrogen)
·Additive manufacturing
·Glove box purge and leak detection
·Industrial gas applications

  • Model Number: SenzTx
  • Data Sheet: Date Sheet File
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  • Oxygen Transmitter
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Product Specification


    The SenzTx is a compact and robust O2 transmitter that utilises zirconia or electrochemical technology to give a reliable measurement of oxygen concentration. The zirconia sensor offers fast response time and a long service life with virtually no drift, whilst the electrochemical sensor allows measurement in background gases containing hydrocarbons.


    The minimum output range of 0 to 10ppm is ideal for nitrogen generation or glove box monitoring. The SenzTx transmitter can also be supplied with measuring ranges up to 0 to 96% O2 for oxygen concentrators.


    The flexibility is further enhanced by process connection multiple output options.



» Zirconia or electrochemical sensor technology options

» Measurement range: 0 to 10ppm up to 0 to 96% O2

» RS 485 modbus protocol

» 24VDC power supply

» KF40 Flange, Flowthrough and Flow Orifice process connection options available

» Combined Sensor & Electronics allows for ease of integration.

» Lightweight and robust (< 0.3Kgs)



» Gas generation (oxygen / nitrogen)

» Additive manufacturing

» Glove box purge and leak detection

» Industrial gas applications


Technical Specifications


Transmitter Model


Measurement technology

Zirconia (ZR)

Electrochemical (EC)

Measurement range*

0 to 1000ppm / 0 to 1% /

0 to 25% / 0 to 96%

0 to 1000ppm / 0 to 25%

Output resolution ( for %)


Output resolution (for ppm)



+/-2% of reading (or 2ppm O2) @ calibrated temperature and pressure

Response time (T90)

<10 seconds @ 25˚C (within selected range)

LDL (Sensitivity)

0.01% (when measuring %) / 1ppm (when measuring ppm)

Temperature range

-20 to +50

0 to +45

Pressure range

900 to 1100 mBarabs


+/- 2% of reading

Life expectation

3-5 years

1 years


0-95% RH non-condensing

Shelf life

No shelf life

Up to 3 Months

Electrical Input / Output

Power supply


Power consumption

Maximum 50mA @ 24VDC

Signal output


Digital communications

RS485 Modbus protocol.

Multiple devices can be connected in a linear series

Electrical interface

M12 x 1.5 connection

Cable length

1 metre / 3 metre / 10 metre

Mechanical Specifications


47mm Diameter x 120mm to 140mm depending on connection type



Wetted materials

Aluminium, PTFE, Viton

Process connection

Flowthrough / Flowthrough + Orifice / KF40 Flange

Ingress protection


Housing material

Anodised aluminium


Complies with EMC Directive 2004 / 108 / EC. UL/ETL Certification Number: UL-61010-1

* Outputs can be factory set to other ranges.Please see order code sheet for details.

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