Preview: MESSKO® MFLOC 2.0

New Generation of Flow Indicators – Available from March 1st, 2019!

Modifications at
a glance

  • New paddle design and material – made of glass-fibre reinforced plastic material
  • Revised interior design (position of switches / new actuating cam)
  • Optimized ventilation
  • Coating according current DIN EN ISO 12944-9:2018-06, available in C4H an CX
  • Revised scale
  • Micro switches with higher switching capacity (10A/250 V AC; 4A/24 V DC)

Since 2010, the MESSKO® MFLOC flow indicator has been in the portfolio of Messko GmbH. As part of our continuous product improvement, those responsible for our products have completely updated the flow indicator.

In the future, we offer you a new generation of the product, the MESSKO® MFLOC 2.0, which represents the state of the art. The assembly and features of the new product are compatible with the device you are familiar with so that nothing will change in installation and use for you.

Product Description

MESSKO MFLOC 2.0 detects pump failure in power transformer oil or water cooling systems immediately and reliably. A specially designed paddle is placed as flow resistance in the circulating cooling liquid to monitor the flow of the cooling fluid. When the pump is on, the flow pressure applied to the paddle, ensures that it rotates to an end stop and functions safely in case of laminar or non-laminar medium flow.

The new paddle


The MESSKO MFLOC 2.0 has been developed with an improved paddle design. The paddle is made from Polyamide Copolymer, 50% Glass Fiber – a proven material in the Reinhausen Group. The optimized functionality of the new design was confirmed by internal and external lab tests during the stage of development.

Technical Data


Ambient Temperature

-40°C up to +80°C
-40°F up to 176°F

Temperature of cooling liquid

-30°C up to +120°C
-22°F up to 248°F

Protection class IP54 (IP65 in certification process)
Pipe diameter DN100 to DN300; other diameters on request
Indication unit Diameter 100 mm / 3,94''
Min. flow speed 0,7 [m/s] / 27,56 [inch/s]

Micro Switches

Electrical connection

Terminal box including M20 x 1,5 cable glands or Terminal box including 3/4"-NPT cable glands

(Optional ANSI and Military connector available)

Contact load max. 10 A/250 V AC oder 4 A/24 V DC, min. 0,5 mA/5 V DC
Rated insulation voltage min. 0,15 mm² / max. 2,5 mm²
2,5 kV AC/1 min., contacts to housing


View glass laminated safety glass with UV filter
Housing/terminal box powder coated according to DIN EN ISO 12944-9:2018-06; available in C4H and CX
Paddle Polyamide Copolymer, 50% Glass Fiber
Dial Aluminum matt, anodized
Gasket NBR for mineral oil, EPDM for water, Viton for alternative isolation liquids

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