1.1
General Introduction
The Southland Sensing OMD-625 Oxygen Analyzer is a microprocessor based online unit designed for
continuous measurements in a variety of applications and gas mixtures.
The analyzer was designed with the customer in mind keeping the operations simple, while still featur-
ing a fast response and rugged design. Every effort has been made to use modern industrial compo
-
nents and materials which has resulted in an advanced design, excellent performance and an overall
low cost of ownership.
The analyzer has numerous options including PPM, Percent and Purity oxygen analysis. The unit can
also be configured with or without MODBUS meeting most oxygen analysis applications.
Southland Sensing Ltd. appreciates your business and recommends to read through the complete
manual to be able to get the full experience from your new oxygen transmitter.
1.2
Principle of Operation - The Oxygen Sensor
The precision electrochemical oxygen sensor used in the OMD-625 is designed and manufactured by
Southland Sensing Ltd under a strict quality procedure.
To understand how the oxygen analyzer functions, it is important to understand a little bit of the sen-
sor characteristics.
The active components in the precision electrochemical oxygen sensor are the anode, cathode and
aqueous electrolyte which are all housed in a cell body. The oxygen molecules in the application pass
through the front sensing membrane. A chemical reaction occurs and a raw electrical current is gen-
erated.
This electrical current is proportional to the amount of oxygen in the application. The analyzer then
processes this raw electronic signal, compensates for temperature and barometric pressure varia-
tions and converts the data into a parts-per-billion, parts-per-million or percent oxygen measurement
value.
The oxygen concentration reading is then displayed on the local display and output to the various
analog and digital outputs features in the analyzer.
Introduction
OMD-625 Oxygen Analyzer
Precision Electrochemical Oxygen Sensor
Designed, Tested and Assembled in California, USA
4045 E. Guasti Rd. #203 Ontario, CA 91761 USA : 1-949-398-2879 : [email protected] : www.sso2.com
