MOX-1,2,3 & 4 MediceL

N.B. The specification is based on measurements made with cylinder gases using a flow rate of 100 mls min-1. Conditions at 20°C, 50%RH, and 1013mBar unless otherwise noted.

Performance Characteristics

Output 9-13 mV in 210mBar O2
Range 0-1500mBar O2
Signal in 100% O2 100±1%
Resolution 1mBar O2
Expected Operating Life 1.5 x 106 % O2hours at 20°C
0.8 x 106 % O2 hours at 40°C
Responce Time (air to 100% O2) T90 < 10s
Linearity Linear 0-100% O2
Zero signal in N2 at 20°C <200mV
Operating Temp. Range -20°C to +50°C
Temp. Compensation ±2% variation from 0-40°C
Pressure Range 0.5-2.0 Bar
Relative Humidity Range 0 to 99% non-condensing
Long Term Output Drift in 100% O2 Typically <5% over 1 year
Housing Material White ABS
Packaging Sealed blister packaging
N2O Resistance Resistant to 100% N2O
Cross-Sensitivity Meets EN12598 requirements
Warranty Period 13 months from date of despatch
(This amounts to a variation of condition 6 of our
standard terms and conditions which otherwise apply)
Sensor Connections Suggested Mating Parts
MOX-1 M16 thread, 3-pin molex header
(MOLEX 22-29-2031)
MOLEX 22-01-2035 (3-way housing)
MOLEX 08-56-0110 (crimp terminals)
MOX-2 M16 thread, 0.141”/3.5mm mini
phone jack
SWITCHCRAFT 750 mini phone jack
MOX-3 M16 thread, UK data socket
AMP P/N 520257-2
MOX-4 M16 thread, UK data socket
AMP P/N 520257-2


Intended Use

These sensors are designed to be used to monitor the partial pressure of oxygen in anaesthesia, critical care, incubators and general Oxygen monitors.

Stabilisation time

Allow at least 15 minutes to stabilise in instrument before calibration.

Cleaning and Sterilisation

In case of contamination the sensor may be cleaned with distilled water and allowed to dry naturally. The sensor is not suitable for sterilisation by steam or exposure to chemicals such as ethylene oxide or hydrogen peroxide

Calibration Interval

These sensors are designed to have minimal drift over their useful lifetime however for maximun accuracy they should be calibrated in 100% Oxygen before use.


Test Gas Error ( %O2)
50% He / 50% O2 < 1%
80% N2O / 20% O2 +1 to +1,5%
4% Halotane / 28,8% O2 / 67,2% N2O +1,5 % to 2,0%
5% Sevoflurane / 28,5% O2 / 66,5% N2O +1 to +1,5%
5% Enflurane / 28,5% O2 / 66,5% N2O +1,2 to +1,8%
5% Isoflurane / 28,5% O2 / 66,5% N2O +1,2 to +1,8%
5% CO2 / 28,5% O2 / 66,5% N2O < 1%

Every effort has been made to ensure the accuracy of this document at the time of printing. In accordance with the company’s policy of continued product improvement City Technology Limited reserves the right to make product changes without notice. No liability is accepted for any consequential losses, injury or damage resulting from the use of this document or from any omissions or errors herein. The data is given for guidance only. It does not constitute a specification or an offer for sale. The products are always subject to a programme of improvement and testing which may result in some changes in the characteristics quoted. As the products may be used by the client in circumstances beyond the knowledge and control of City Technology Limited, we cannot give any warranty as to the relevance of these particulars to an application. It is the clients’ responsibility to carry out the necessary tests to determine the usefulness of the products and to ensure their safety of operation in a particular application. Performance characteristics on this data sheet outline the performance of newly supplied sensors. Output signal can drift below the lower limit over time.

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