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Flow Indicators For Gases & Liquids
Flow Indicators For Gases & Liquids
KOBOLD Messring GmbH offers special version Type DAA flow indicators where the rotor is housed in a glass cylinder. This version ensures a functional flow check from two points of view. On the one hand its construction as a visible cylinder gives a relatively large and thus easily observed field of observation; in addition the rotary movement of the Teflon rotor permits reliable monitoring of cloudy or dark media due to its noticeably bright colouring. This type of device is already widely used and has proved itself in industrial use thanks to its functional reliability. Thanks to an interesting auxiliary device however the DAA flow indicator deserves particular attention. Due to the integration of two wiper elements there has been success here for the first time in combining a flow indicator with a device, which allows the equipment to be cleaned during operation. Here the sight tube is rotated so that the wiper elements concentrate the dirt into two narrow strips on the interior of the glass. From there it is taken away effortlessly by the flow. For this purpose the hard glass tube is fitted with O-rings, which slide easily, so that the cleaning of the unit can be carried out by hand even under full operating pressure. A choice of units, which can be mounted in any position, is offered with connection dimensions ¼" BSP to 1½"BSP, with which flow rates of, e.g., 0.4 l/min up to 100 l/min H2O can be reliably checked. Along with the standard housing version in brass, the units are also offered in a resistant stainless-steel version for aggressive media. If the rotor is unwanted for particular applications, e.g., for increases in flow rate, the unit is also available with just a sight glass with cleaning device. The type DAA flow indicators are usable for operating pressures up to PN 16 at temperatures up to 100 ° C.
