Field measurements become more valuable when oxygen readings, temperature, pressure and depth can be recorded together. GMH 5650 measures dissolved oxygen in water and adds data logging, alarms and depth-related functions for structured monitoring in aquaculture, aquaria, well water, sewer systems and wastewater treatment plants.
The integrated pressure sensor compensates ambient pressure for oxygen concentration, saturation and calibration. With the TMV 3600 depth measuring assembly, the instrument can also evaluate measuring depth with 0.1 m resolution, making oxygen profiles in lakes or wastewater easier to document with the logger function.
Built for portable use in demanding environments, the IP65 / IP67 housing includes a protective silicone case and an illuminated double display. The cyclic logger stores up to 10,000 data sets, while the single-value logger stores up to 1000 records with measuring point input. Separate alarm channels for oxygen and temperature support clear limits during field checks.
The instrument calculates oxygen concentration, oxygen saturation and oxygen partial pressure from the sensor signal and temperature.
With the TMV 3600 accessory, the pressure sensor evaluates hydrostatic measuring depth with 0.1 m resolution.
The logger records single measurement sets manually or cyclic data sets at selectable intervals from 0:01...60:00 minutes:seconds.
The universal output can be configured as an adjustable 0 ... 1 V analog output related to concentration or the selected oxygen display setting.
The meter supports 1-point calibration and 2-point or 3-point calibration using air, oxygen, nitrogen or corresponding saturated water references.
The configuration menu allows salinity correction from 0.0 ... 70.0 for water-based media with chemical content similar to sea water.
