German AMT Shallow Water Micro Sensor for Dissolved Oxygen - Dissolved Oxygen

German AMT Shallow Water Micro Sensor for Dissolved Oxygen Description:

A current-based dissolved oxygen micro sensor for shallow water has been developed for very rapid in-situ depth profiling via CTD probes and horizontal profiling in rivers, lakes, and oceans using towed vehicles, ROVs, or AUVs. Due to the partial pressure of gaseous O2, the analyte permeates through the membrane. Inside the sensor, oxygen undergoes an electrochemical reaction at the working electrode. This generates a current corresponding to the partial pressure of dissolved oxygen. The sensor's t90% response time can reach a few hundred milliseconds. As is well known from all other Clark-type membrane-covered oxygen sensors, flow-through is not necessary. Therefore, analysis with very high local resolution is possible. Turbid, muddy, and colored solutions do not affect the sensor signal. To measure oxygen saturation, the sensor needs to be combined with temperature measurement. If oxygen concentration is determined, additional measurement or knowledge of conductivity/salinity is required. Maximum deployment depth is 100 meters. All sensors are equipped with temperature compensation data.

German AMT Shallow Water Micro Sensor for Dissolved Oxygen Parameters:

Parameter	Technical Specification
Measurement Principle	Electrochemical membrane-covered sensor
Power Supplies	9 ... 30 VDC (other requirements)
Output	0 ... + 3 VDC (other requirements)
Dimensions	Diameter: 24 mm, Length: approx. 235 mm
Connection	SUBCONN BH-4-MP (other requirements)
Housing	Titanium, integrated preamplifier
Measurement Range	0...150% saturation (other requirements)
Resolution	e.g., 100% saturation/volt Depending on the resolution and requirements of the sensor signal
Accuracy	2% (of measured value)
Response Time	t90% below 200ms
Average Lifetime	6...24 months (depending on application environment)