| 摘要 |
The invention describes a method of establishing a temperature correction for a Ni-Span C cylinder incorporated in a gas specific gravity sensor, the cylinder is characterised in that during manufacture validation points of time period versus temperature have been established to determine if the cylinder is fit for use. The method of the present invention is characterised in that these validation points are used to derive a temperature correction curve where the curve may be a polynomial curve that is at least cubic in order. During operation of the device a measurement of temperature may be taken and applied to establish a correction factor in real time. The correction of temperature effects is particular relevant at gas pressures below around 8 bar. |
