The DAK-025 Water Flow Indicators

Intrinsically Safe Flow Indicator - ATEX approved for underground mining

The intrinsically safe water flow indicators type DA and type DAK can be mounted in any position and monitors the flow of fluid mediums (water or liquids with water-like viscosity) in closed and filled systems.

It is certified Ex ia I for underground mining.

Integrated changeover contacts, in conjunction with different kinds of line monitoring modules enable the use of the flow control device in either SPS or conventional controlled systems. Minimum and/or maximum flow settings can be adjusted and monitored.

The flow indicator type DA is only for monitoring use, whereas the flow indicator type DAK have a contact boundary switch integrated. Inside of the massive brass housing, a contact breaker is fitted to the volume dial.

The lower and upper boundaries can be externally adjusted over the whole range of the dial using the key, which is delivered with the unit.

The volume will be shown as an analogue display

Monitoring function

• integrated boundary valve contact
  
• activation and deactivation point infinitely adjustable

Specifications

Mechanical Connection: 1”, 1 ¼”, 2” straight pipe thread or Sandwich connection
Nominal Width: DN 25 to DN200 (see table)
Measuring range: see table
Tranquilliser Distance: In: 5 x DN (e.g. 5x DN25 = 125 mm)
Out: 5 x DN (e.g. 5x DN25 = 125 mm)
Any adaptation to the length requires written approval ofthe manufacturer.
Medium: Water or medium with water like viscosity
Nominal Pressure: 40bar (580Psi, 4Mpa) up to 200bar (2900Psi, 20Mpa)
Material: Brass MS58 / Red Brass RG7
Environment Temperature: -20°C to +60°C (253,15°K to 333,15°K)
Nominal Current: 0V to 24V
Circuit Durability: 0V to 12V: 2,0A
12V to 24V: 1,0A

The medium is water, or liquids with a water-like viscosity.

Learn more about our Water Flow Indicators and other Coal Mining Equipment