H84.0.15.6C-01
Operating manual ResOx 5695
Page 11 of 22
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6.2 Sensor elements
Unsuitable for underwater-diving-application e.g. Rebreather.
6.2.1 GOEL 370 acidic electrolyte
Integrated in GGO 570, GGA 570, GOO 570.
Recommended application areas 0...35 Vol. % O
2
(above, the measuring accuracy is
reduced).
Also suitable for gases with high CO
2
-proportion or for CO
2
-gas. The effect of the
acidic electrolyte is that the sensor is resistant against the CO
2
-gas and still hold the
stability.
6.2.2 GOEL 381 basic electrolyte
Short-time exposition of up to 10% CO
2
is not problematic (for example 15 minutes.
up to 10 times per day) for the GOEL 380 (e.g. exhaust measuring). If there is
measured more often with elevated CO
2
-concentration or at CO
2
-concentrations
above 10%, the exposition time has to be kept as short as possible and sufficient
measuring breaks should be made.
If the sensor is not exposed to free air during measuring pauses, the connected
tubes etc. have to be flushed with clean air or nitrogen.
Integrated in GGO 581, GGA 581, GOO 581.
Recommended application areas 0...100 Vol. % O
2
.
Preferred of measurements with extremely small oxygen content (e.g. < 0.3 Vol. %
O
2
), e.g. protective atmosphere, or more than 35 % Vol O
2.
For gases without larger CO2 concentration
7
Oxygen measuring in gases- please note
The instrument is designed for measuring the oxygen partial pressure or the oxygen concentration (% Vol.
O
2
) calculated from partial pressure and ambient pressure) in gases. Please keep in mind.
The sensor consists of a sensing element (GOEL 3xx) enclosed in a sensor housing (GGO/ GGA/ GOO).
When purchasing a Sensor GGO/GGA/GOO 5xx, a sensor element is already integrated,
e.g. a GGO 570: contains housing GGO and a sensor element GOEL 370
7.1 Application of the different sensor types
7.1.1 GGO housing (closed sensor)
For measurements at atmosphere
and in systems without over or under pressure, the GGO... is sufficient.
Additionally the GGO can be screwed tightly into systems with small
over or under pressure.
Attention! Mind the maximum pressure and the maximum pressure
difference at the membrane.
If instrument and sensor pressure are different, please connect the
pressure port of instrument to measuring pressure, otherwise it will
be compensated wrong!