User manual

Z11.0.1X.6C-15 page 1 of 4
WEEE-Reg.-Nr. DE93889386
GHM Messtechnik GmbH • Standort Greisinger
Hans-Sachs-Str. 26 • D-93128 Regenstauf
 +49 (0) 9402 / 9383-0  +49 (0) 9402 / 9383-33  [e-mail]
Operating Manual
GOEL 370, GOEL 380
Atmospheric Oxygen Sensor - Replacement
General information:
GOEL 370 (acidic electrolyte): Specialized sensor for diving application e.g. measuring Nitrox. Construction is
optimized to this application, especially during professional usage in harsh environment the higher price will pay.
Also suitable to measure oxygen-concentration in air or other gases with a high CO
2
-content or even in a CO
2
-
atmosphere. The acid electrolyte guarantees that the sensor could not be influenced by CO
2
.
GOEL 380 (basic electrolyte): Sensor for low oxygen concentration e.g. controlled atmosphere. Without larger
CO
2
concentration *).
*) The GOEL 380 (and formerly the GOEL 369) is designed to measure oxygen-concentration in air or other gases
without larger CO
2
concentration. Higher CO
2
-concentration reduces the life-time of the sensor.
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.
Note: 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.