Linn-Catalogue 2019-2020

Control Systems 62 LINN Stationary Oxygen Probe A key component of any monitoring sys- tem is an oxygen sensor installed directly in the pond. This sensor/probe optimally protects against any malfunctions (elec- trical outages, motor malfunctions etc) that could lead to a reduction in oxygen levels. Dryden oxygen prober and transducer ODOS - oxygen probe Oxyguard oxygen probe We are generally able to combine our mo- nitoring and control systems with a range of different probes. All probes work with a 4 - 20 mA current. Probes measures oxygen in % saturation (mg/l on request). Optical oxygen sensor LINN Calibrator for optical oxygen probe Optical Sensor This new kind of probe works with a light sensor. We provide this probe with spe- cial programming and a protective cap for use in fisheries. The only closure is the robust sensor cap, which can simply be removed and repla- ced after use (3-4 years). No additional transducer is necessary for this kind of probe. The optical ODOS probe can easi- ly be added to existing systems as a re- placement sensor, as it can also be con- nected using a two-lead cable. The optical probe offers stable measure- ments, does not require inflow and does not have to be calibrated. OXYGUARDProbe This type of probe is an electro-chemical sensor (with membrane and electrolytes). This technique has proven itself in daily use in fisheries. In the Oxyguard probe, the necessary electronics (transducer) are located wit- hin the sensor. This is advantageous, as an additional control box for the transducer is not necessary. The sensor can be calibrated using a potentiometer directly on the sensor. A two-lead cable is sufficient to power the sensor. DRYDENProbe This probe is also an electro-chemical sen- sor. In this type, the transducer is located outside the sensor itself. The electronics are not in the sensor casing and therefore not constantly under water. The transducer can be kept in the control box as a rail module. Again, a two-lead cable is sufficient.