Study on the Indication Accuracy of Oxygenmeter Under the Low Atmospheric Pressure
1983 Volume 99 Issue 1149 Pages 978-982
Details
1983 Volume 99 Issue 1149 Pages 978-982
On the high mountain the partial pressure of oxygen becomes low in proportion to the atmospheric pressure with the altitude. It is important, therefore, for the health and safety of mine workers working in the underground mine to know the accurate and correct oxygen content in the environmental atmosphere. However, the availability of portable oxygenmeter on the high mountain, hitherto, has been hardly concerned about.
To make clear the availability of oxygenmeter on the high mountain, the indication accuracy of some galvanic cell type portable oxygenmeters under the low atmospheric pressure was studied in a low pressure testing apparatus which was made by way of trial for the purpose as well as on a high mountain of the 3000 meter class.
The tests in the laboratory and on the field revealed that the indication accuracy of oxygenmeters hithertofore in use were not enough for the use on high mountain and the main reason was found chiefly to be the inadequacy of membrane characteristics of galvanic cell used in the oxygenmeter.
The new oxygenmeter modified with an improved membrane works fairly good in the scope up to 5000m high and the indications coincide with the standard oxygen concentration calculated on each altitude.
