Current meter stations

In the early 1970s, several temporary buoy stations were installed in the shallow western Baltic Sea off the coast of Mecklenburg-Western Pomerania (cf. Table 3.2) to improve technical details for installation and running of buoy stations (Muller, 1974). These stations were equipped with mechanical current meters of the LSK type or of the Russian current meter Alexejev and with photothermographs for measuring temperature (Franck, 1976). 

Fig. 9 Data from the mooting station installed in the strait connecting the western and the eastern basins in October, 2005, Survey 5(2). The current meter and the level gauge at the mooring station were deployed at the depth of 4 m, about 1.5 m above the bottom in the deep channel at the western outlet of the strait. The meteorological station was installed at the northern bank of the strait, some 3 km north of the mooring. From top to bottom atmospheric pressure relative humidity zonal and meridional wind stress components zonal and meridional components of the current velocity surface level anomaly as derived from the pressure gauge...

Ellis, G.H. (1920). Car for current-meter gaging stations. Engineering News-Record 84(2) 80. Ellis, G.H. (1920). Hydraulics of the intake to a pipe drop. Engineering News-Record 85(12) 565. 

Covert, C.C., Lyon, G.J., Pierce, C.H. (1913). Plans and specifications for current-meter gaging stations. USGS Washington DC. 

Rohwer, C. (1933). The rating and use of current meters. Technical Bulletin 3. Colorado Experiment Station Fort Collins. 

On June 08, 1994 a bottom mounted current profiler RDI BB-ADCP 600 kHz was deployed at some hundred meters distance from the station in order to collect current velocity data. The accuracy of the velocity data is of about 0.4 cm/s. On July 15, 2003 this device was replaced by an WH-ADCP 300 kHz device, mounted in a trawl resistant frame 100 m away from and connected to the measuring pile via a cable for power supply and data transmission. Because of the different device type the accuracy of the velocity data has changed to 1.1 cm/s. The uncertainty of depth allocation of the current measurements to the T-S samples is estimated to 0.5 m. The provided data files contain daily mean values averaged from 0 00 to 23 59 UTC at four depth levels for the period from December 1, 1991 to December 31, 2006, including the major inflow events of 1993, 1997, and 2003. 

There are many alternatives to this homebuilt monitoring station. One is to spend another 25 and get two meters. This lets you see both voltage and current simultaneously. For 150-200, the next best thing is an Ah (Amp-hour) meter. This will show the accumulated charge and discharge of your system s battery pack over time. Effectively, it sums... 

A test station is required for testing a fuel cell. A test station enables the control and measurement of the current and the voltage. The station also controls all the input parameters, such as the flow rate of the reactants, by using flow meters or mass flow controUers. A mass flow controller typically has an error of about 2% of file fuU scale. A 100-time difference in the flow rate is often encountered during the measurement when the current density is changed from 0.01 to 1.0 A cm So, a 2% flow rate error at the full scale can be many times higher at the lower flow rates. Very often, the flow rate is set at constant when the current densities are less than about 0.1 A cm. ... 

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