This table shows the maximum flow capacities for different GAS-VIEW models in several flow units. Please note, these capacities are all shown for Air. Use Fluidat on the Net to calculate to other flow units.
The flowmeter saves all the parameters in the built-in nonvolatile memory (EEPROM).
Backup processing will be performed, if circuit voltage falls and it is less than a steady value by the battery’s having died or having intercepted the external power supply.
Therefore, when a power supply is recovered, the parameters (when the power was turned off) are reproduced.
In general, vortex meters are sensible for vibrations and impact shocks. Therefore vibrations and impact shocks should be prevented in the neighbourhood of the meter.
A Kármán vortex street is a term for a repeating pattern of swirling vortices caused by the unsteady separation of flow of a fluid over bluff bodies. It is named after the engineer and fluid dynamicist, Theodore von Kármán.
The output pulse of a GAS-VIEW is of the “open collector” type.
Instead of outputting a signal of a specific voltage or current, the output signal is applied to the base of an internal NPN transistor whose collector is externalized (open) and available on the wire. The emitter of the transistor is connected internally to the ground pin.
If we supply for instance 24Vdc to the pulse line and we keep the maximum current to 20mA, then we need a “pull-up” resistor of 24(VDC) / 20 (mA) = 1.2 (k Ohm)
Note: if the readout unit is a NPN Open collector receiver, there is no need for a pull-up resistor.
