JUMO 202610.0, Operating Instructions Manual, Page: 13 / 68

13
3 Oxygen transmitter dTRANS O2 01
Influence of the
atmospheric
pressure With present-day calibration methods (acquisition of the measurement signal
in vapor-saturated air), the atmospheric pressure must be considered, since
the tables above refer to the normal atmospheric pressure of 1013 mbar.
When the measuring device is installed either
- the height a.m.s.l. is entered. Since the weather-dependent fluctuations of
the atmospheric pressure only slightly influence the measurement variable,
they do not have to be automatically taken into account.
- or the present atmospheric pressure is measured and entered on the
transmitter.
The dTRANS O2 01 offers both entry options. The entries are made through
the setup program, or on the operating unit.
Salinity Salinity denotes the content of dissolved salts in water (in weight %).
The relationship between conductivity and salinity is described, for
example, on the following Internet page:
http://îoc.unesco.org/oceanteacher/resourcekit/M3/Converters/
SeaWaterEquationOfState/
Sea%20Water%20Equation%20of%20State%20Calculator.htm