Level Indicators & Controllers

The BM 26 is a simple, rugged instrument designed to indicate level or interface. It indicates level using a float magnetically coupled to an index or a column of rotating flaps. It is ideal for aggressive media stored in tanks when the PTFE lining option is used. For liquids with densities less than 0.5 kg/l / 31 lb/ft³, pressures more than 120 bar / 1740 psig and temperatures higher than 300°C / 570 °F, we recommend our BW 25 displacer-type level indicator.Highlights

Stainless steel design (optional NACE conformity)
Proven technology
Temperature range: -200…+300°C / -325…+570°F
Pressure range: -1…120 bar / -14.5…1740 psig
Density: 0.5…3 kg/l / 31…187 lb/ft³
Float material options: 316L, 316 Ti and Titanium
Stainless steel scale with wide choice of markings: m/cm, ft/in, %, volume etc.
Less risk of leakage than a sight glass - little or no maintenance needed
Easy to install
Ideal for tanks with obstructed environments
Optional indication of interface
Optional approvals for EEx i or EEx d applications

Industries

Chemical and Petrochemical
Oil and Gas
Power

Applications

Boilers
Condensators
Hydrocarbons and Separators
Liquid gas
Process and storage tanks
Steam cracking

Level measurement of liquids, even at high pressures using the displacement principle

Modular assembly, replacement or retrofit without interruption of the process
Pressure-tight separation of measuring and display parts
Interface detection possible
Displacement rod available 0.3 - 6 m (1 - 20 ft)
Resistant to high pressures ≤ 400 bar (5800 psig) and high temperature ≤ 400°C (752°F)
Current output 4...20 mA and/or max. 2 limit switches

Application range

The level indicator can be used for various liquids. This device is suitable for extreme operating conditions.

Temperatures '60 - +400°C ('76 - +752°F)
Pressure Up to 400 bar (5800 psig)

If the display cannot be installed from above, e.g. there is an agitator in the vessel, it is possible to install it lateral in a special reference chamber. In both cases it is important to note that the non-measurable depth is 340 mm because of the spring mounting.

With special versions it is possible to measure the interface between two immiscible liquids of different densities. The displacer must be covered completely with liquid. The difference in density should be min. 100 g/l.

Typical products are:

Water, aqueous liquids
Acids/alkalis
Organic and inorganic solvents
All kind of pure liquids

Krohne BM26 Magnetic Level Gauge

Krohne BW 25 Liquid level indicator

Application range

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