SST
Sensing Ltd (UK) has adapted a proven and reliable oxygen sensing technology
and developed this into a miniaturised oxygen sensor aimed at OEMs. The
technology, packaged in a small 'can style' housing, uses fluorescence
quenching by oxygen to determine the oxygen content in a given environment. The
Optical Oxygen Sensor incorporates a temperature sensor which removes the need for external
hardware or software temperature compensation.
An
optional pressure sensor allows the sensor to report the oxygen concentration
as well as the oxygen partial pressure. The standard ‘can’ style sensor
provides an RS232 output, SST Sensing's Evaluation Board allows customers to
trial the product and provide a variety of outputs (RS232 and 0-10V and 4-20mA
and Modbus) and their Industrial Board provides the output specifically to
match customer’s requirements (RS232 or RS485 or 0-5V or 4-20mA).
Connection
to the host microcontroller is by a simple two-wire interface and requires no
ancillary components like amplifiers, A-to-Ds and temperature sensors. This
saves on both design time and bill of material cost.
The
gas temperature and the gas pressure (in models with built-in pressure sensor)
can also be sent to the host.
A
stabilisation process performed during manufacture removes initial short-term
sensor drift ensuring the long-term stability of the product.
Unlike standard electrochemical sensors, LuminOx contains no hazardous materials and is fully RoHS compliant.
Used
for many years in complex, high value instrumentation products, LuminOx
technology is proven to be robust and accurate. SST uses a unique formula to
ensure stability and long life, in a significantly smaller package than
previously available. Data from trials using this technology in high-value
instruments showed a drift of less than 0.3% O2 in ten years without
re-calibration.
LuminOx’s non-consumptive sensing principle means that shelf-life issues associated with electrochemical sensors are non-existent.
Sensors
measuring 0-300mbar O2 partial pressure and 0-25% vol. O2 are currently
available, fully calibrated, from SST Sensing’s factory in Scotland
LuminOx
is a complimentary addition to SST’s current Zirconia oxygen sensing product
portfolio.
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