Heinrichs Messtechnik GmbH
Page 12
Betriebsanleitung KDS/BGK
9
Conditions of use
The VDI/VDE guidelines must be observed. The meter is suitable for liquid products with sufficient flowability
that are free of solids, do not bond and do not tend to settle and gases with linear flow behavior and an adequate
inlet pressure.
KDS-R: The minimum differential pressure between input and output side must amoun to 350 mbar.
9.1
Mounting/start-up
The variable-area flowmeter must be installed perpendicularly (direction of flow from the bottom to the top).
The size of the product line to be connected must be identical to the size of the device connection.
Please make sure that there is adequate clearance from parts that might cause magnetic interferences, such as
solenoid valves and ferromagnetic components like steel brackets/supports. For two adjacently mounted devices
we recommend a the minimum lateral distance between them of 300 mm. The devices can be mounted closer
together if they are vertically offset by one device length. The minimum lateral clearance for interfering steel
parts should be 200 mm. In case of doubt, check the interference by moving the device back and forth in the
selected distance by about 200 mm and testing whether the pointer position changes.
Select the mounting location so as to enable a reliable reading of the scale values. Please take note as well of the
space requirement for any possible disassembly of the device.
To achieve stress-free mounting, the flanges of the pipe must be aligned parallel to each other. Please check
whether the pipe is adequately stable to rule out the possibility of vibration or swinging. (Do not use steel
mounting parts on the device.)
If there is risk of dirt or solid matter penetrating the process pipes, flush them beforehand so that these materials
do not get caught in the device. Ferromagnetic solid matter such as spatter can lead to the breakdown of the
device. If these materials are still present during normal operating conditions, mount a magnetic filter
(accessory) in front of the device.
When using gases, slowly let the inlet pressure rise to avoid pressure surges.
Basically, to prevent the float from shooting upwards during flow start-up, the use of solenoid valves should be
avoided.
KDS-S, BGK: Avoid installing a valve directly in front of the device.
9.1.1
Device setting
The measuring equipment is delivered ready for operation according to your order specifications. The limit
transducers are set to the desired values. If you have not submitted any requirements, the basic settings are the
following:
1 contact device: - Minimum contact switching point at 10% of descending flow (damped/closed-circuit principle)
2 contact devices: Minimum contact switching point at 10% of descending flow and maximum contact switching
point at 90% of ascending flow
