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法國ARELCO（阿萊爾科）公司是法國制造氣體分析和取樣儀器的廠商，用于氣體的制造和燃燒的控制：氧氣，H2, CO, CO2 和 H2O分析儀；ARELCO石油產品物理性能分析儀；ARELCO熱量計和Wobbe測量儀；灰塵，細菌，有毒氣體取樣儀。

The oxygen analyzer ARELCO ARC models ZOA 100 use a zirconium oxide detector with gaseous distribution. This technique allows to insure a continuous operation, or intermittent, with a reduced maintenance at least.
The ZOA 100, in all its versions, addresses the demanding applications.
The oxygen analyser from ARELCO A.R.C. model TOA MP - R integrates a maintenance free sealed electrochemical sensor and a complete new microprocessor electronics.
Main technical specifications :
Measurement principle: electrochemical sensor
Accuracy* : +/- 1 % of selected full scale
+/- 0.2 % between 0 and 10 ppm
Response time : T95 < 20 sSensor : temperature monitored at +40°C
Inlet pressure : 1 bar max