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BM26A-7000

Magnetic level indicator for extreme operating conditions

Designed for level and interface measurement of high-temperature and high-pressure liquids; no power supply needed
Measuring range: 0.3…5.5 m / 1...18 ft (others on request)
Density: 370…1200 kg/m³ / 23.9…74.91 lb/ft³
Up to +400°C / +752°F; 400 barg / 5801 psig

BM26A-7000

The BM26A-7000 is a magnetic level indicator (MLI) for extreme operating conditions and liquid interface applications. The level gauge is particularly suitable for continuous level measurement of high-temperature or high-pressure liquids in chemical, petrochemical and refining processes or in boiler applications of various industries. It is equally suitable for interface measurement in oil/water separators or similar installations. For level monitoring of corrosive products in pressurised tanks up to 40 barg / 580 psig, the PTFE-lined version of the MLI is the instrument of choice.

The magnetic flaps of the BM26A-7000 are housed in an IP68 rated, hermetically sealed glass tube. The level indicator provides highly visible local level indication. There is absolutely no power supply needed. However, in applications with more advanced signal output requirements, the BM26A-7000 can be easily equipped with optional limit switches or a reed-chain level transmitter providing analogue or digital output signals.

Product highlights

Dedicated version for high temperature and pressure conditions
Large choice of materials, e.g. 316L, 304L, alloy C276, alloy 625
PTFE-lined version for corrosive liquids up to +200°C / 192°F and 40 barg / 580 psig
Float designed for low densities down to 370 kg/m³ / 23.09 lb/ft³
Flaps housed in hermetically sealed glass tube (IP68)
Thermal insulation for high temperatures, electric heat tracing, heating/cooling system, heat protective enclosure
Highly visible level indication works without power supply
Available with optional reed switches (3-wire, NAMUR) or reed-chain level transmitter (4…20 mA/HART^®7, FF, PA output)

Typical applications

Power generation

Feedwater heaters, industrial boilers, boiler drums, flash drums, hot wells

Petrochemical industry, chemical industry

Alkylation units
Propylene vessels
Chlorine vessels
Blowdown/flash tanks
Pressurized tanks with acids (nitric, sulfuric) or solvents (acetone, toluene, xylene)
Naphtha
Gas condensate
Alcohols

Oil and gas industry

Oil/water separators
Surge tanks, gas chillers, deaerators

Accessories for this product

LT40

Reed-chain level transmitter for magnetic level indicators

Aluminium or stainless-steel housing (IP66/68) with optional backlit display
Remote version for temperatures >+300°C / >+572°F
Top or bottom mounted electronics
4…20 mA/HART^®7, FOUNDATION^TM fieldbus or Profibus-PA output
ATEX / IECEx certifications

MS15

Reed limit switch for magnetic level indicators

Polyester-coated aluminium or stainless-steel housing (IP66/68)
3-wire (NAMUR) single pole double throw (SPDT)
Hysteresis: 28 mm / 1.1″
100VA/1A/250 VAC or 250 VDC
ATEX / IECEx certifications

MS40

Reed limit switch for magnetic level indicators

Aluminium housing (IP66/68)
3-wire (NAMUR) single pole double throw (SPDT)
Hysteresis: 28 mm / 1.1″
60VA/1A/250 VAC or 250 VDC
ATEX / IECEx certifications

General information

Measurement principle	Float in bypass
Measured media	Liquids
Contact to measured medium	Yes
Interface measurement	Yes
Measuring range (liquids)	0.3…5.5 m/ 1...18 ft (other on request)
Process pressure	-1…400 barg/ -14.5…5801 psig
Process temperature	-196…+400°C/ -320.8…+752°F
Wetted parts	Austenitic stainless steel (1.4404/316L), Nickel-chromium-molybdenum-niobium (2.4856/Alloy 625), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Borosilicate glass 3.3, Titanium coated with ECTFE (Ethylene ChloroTriFluoroEthylene), PTFE-lined stainless steel (1.4404/316L), Titanium
Gaskets	316L/graphite (spiral-wound), Aramid, Graphite, Polytetrafluoroethylene (PTFE)
Accuracy (liquids)	±10 mm/ 0.39 in (optional: ±5 mm / 0.2 in with LT40)

Approvals/Standards

Certificates/Approvals Ex	ATEX, IECEx
Certificates/Approvals Nuclear	Nuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.)
Certificates/Approvals Others	ASME B31.1, ASME B31.3, NACE, PED/EN 13445
Ingress protection	IP68