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

vkg-durchfluss.png: Viscosity Compensated Flow Meter / Switch VKG

Viscosity Compensated Flow Meter / Switch VKG

For viscous liquids

Measuring / switching range:
0.1 - 0.45 ... 5 - 80 l/min
Connection: G ¼ ... 1 female thread, ¼ ... 1" NPT female thread
Material: brass, stainless steel
pmax: 12 bar
tmax: 100°C
Accuracy: ±4 % of full scale
Options: reed contact, pointer indicator, analogue output


application/pdf; charset=binary


270 KB

Operating Instructions

application/pdf; charset=binary

VKG - Operating Instructions

1,5 MB


application/pdf; charset=binary

General Safety Instructions

175 KB


application/pdf; charset=binary


160 KB


The KOBOLD flowmeters and switches model VKG have a spring-loaded float, which slides within a cylindrical measuring tube and has an integral orifice which is believed to be unique. This  and other design features means that it has for the first time become possible to create a flowmeter and switch which fully compensates for viscosity and to a large extent for density even with very low flows.
The float of these patented devices contain permanent magnets which actuate a potential free bistable reed contact mounted outside the flow, thus ensuring hermetic separation between the medium and the electrical contact system. The contact is embedded within a height-adjustable plastic housing to prevent damage to the contacts by mechanical action or aggressive atmospheres.

Other Members of the KOBOLD group

Products by Keyword
KOBOLD Instruments Inc.

1801 Parkway View Drive
15205 Pittsburgh PA
United States of America

Please activate JavaScript

Cookies & Features

This website uses cookies to provide content and features. Details of the technologies used can be found in our privacy policy.

Essential Cookies

Session data such as language selection or spam protection - you can't do without it.

Google Services

Some pages on this website load content from Google Maps and YouTube.