KOBOLD Instruments Inc • 1801 Parkway View Drive • 15205 Pittsburgh, PA • Tel: +1 412 788 2830 • E-mail: Please activate JavaScript • visit koboldusa.com

kds-kds-r-durchfluss.png: Variable Area Flow Meter / Switch - All Metal - Low Volume KDS

Variable Area Flow Meter / Switch - All Metal - Low Volume KDS

Measuring range:
0.1 - 1 l/h ... 20 - 200 l/h water
3.0 - 30 Nl/h ... 600 - 6000 Nl/h air
Connection: ¼" NPT
Material: stainless steel
pmax: 40 bar (63 bar), up to 420 bar on request
tmax:  +130°C
Contact: -25 ... +100°C, analogue output: -40 ... +100°C
Accuracy: ±3 % of full scale
Option: contacts, analogue output, up / downstream pressure regulator


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407 KB

Operating Instructions

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KDS/BGK - Operating Instructions

2,5 MB
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KDS-Ex - Operating Instructions

1,4 MB


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General Safety Instructions

175 KB


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II 1G Ex ia IIC T6...T1 Ga
II 2G Ex ia IIC T6...T1 Gb

3,8 MB
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II 2G Ex ib IIC T4 Gb
II 2D Ex ib IIIC T135°C Db

191 KB
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Ex ib IIC T4 Gb
Ex ib IIIC T135°C Db

280 KB
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Ignition Hazard Assessment

50 KB


The fluid flows from bottom to top through the meter tube of the flowmeter. The float is lifted until an annular gap between the measuring cone and the float is produced which corresponds to the flow. The forces acting on the float are in equilibrium.
The height of the float resulting from the flow rate is transmitted by the permanent magnet in the float through the magnetic tracking system in a rotation to the pointer axis of the analog indicator unit.
The variable-area flowmeter consists of a stainless steel device with an integrated conical stainless steel measuring tube and a vertically movable float. The valve for setting the flow rate is built-in (only KDS-K/C).

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KOBOLD Instruments Inc.

1801 Parkway View Drive
15205 Pittsburgh PA
United States of America

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