23.090 - Digital flow meter (no back-run stop):
For determining the amount of water passing through a plankton net or a pipe with a known diameter.
The flow meter is recommended for a horizontal tow of the plankton net. If lowered in a vertical position, the flow meter counts on its way down as well as when drawn back through the water column, thus causing an improper read-out. For a vertical pull you can use flow meter 23.091, which comes with the back-run stop feature.
Diameter of propeller/counter body: 70/32 mm, length 185 mm, 5-digit counter; easy installation by a two-wire point connection of the nosepiece.
The construction is based on a free flooding design, so it can be used for full (unlimited) oceanographic depth.
|Flow meter||Recommended for horizontal pull|
|Rotor||Polyamide, PA 6.6 Nylon rotor|
|Nose cone||POM Plastic|
|Gear shaft||Armaloyed stainless steel main rotor and idler gear shaft|
|Overall length||19,0 cm|
|Standard rotor diameter||7,5 cm|
|Depth rating||Unlimited (free flooding)|
|Data read out||Five ten-digit counter wheels reading 00000 to 99999. One count per rotor revolution|
|Counter||99999 counts, equal approx. 16,2 nautical miles. The counter can be reset to "0".|
|Mounting||Universal bridle allowing two-point connection|
|Range||20 cm/sec to 8,0 m/sec|