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

dwf-analyse.png: Density meter DWF

Density meter DWF


Measuring range:
700 ... 1900 g/l
Flow: max. 2500 l/h, 5000 l/h or 10000 l/h
Connection: flange DN25 ... DN50
Material: stainless steel or Hastelloy®
pmax: PN16 (PN40 on request)
Temperature range: -20 ... +150°C
Accuracy: ±1.25 ... 6 g/l
Mechanical pointer indication
Options: 4 - 20 mA, contacts, Hart®, Profibus® PA


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294 KB

Operating Instructions

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DWF - Operating Instructions

2,7 MB


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Ignition Hazard Assessment

87 KB
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IECEx BVS 16.0072

Ex ia IIC T6 Gb

514 KB
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PESO P568580

Ex ia IIC T6 Gb

102 KB
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DMT 00 ATEX E 075

Transmitter ES, ES-PPA, ES-FF

2,4 MB


The displacer rod, which is attached to a measuring spring by a chain, immerses into the liquid and is subject to a buoyant force proportional to the mass of the displaced liquid. Every change in the weight of the rod corresponds to a change in the length of the spring and is therefore a measure of the liquid level.

The longitudinal expansion of the spring, i. e. the travel of the rod, will be transmitted from the measuring space to the indicator unit by means of a magnetic coupling. The basic version of the indicator unit consists of a scale with a pointer for displaying the liquid level.

As an option, the indicator unit may be equipped with electrical transmitters for remote display or with limit switches. If the device cannot be installed from above, because, for example, a stirrer is mounted in the container, a special displacement vessel is available for lateral installation. Since the buoyancy of the displacer rod depends on the density (g /L or kg/m3) of the measured medium, it must have been designed for the specific liquid to be measured.


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KOBOLD Instruments Inc.

1801 Parkway View Drive
15205 Pittsburgh PA
United States of America

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