BM26A-8000 is a magnetic level indicator (MLI) for redundant level measurement in liquid applications
Category: KROHNE
Specifications
Technical
Magnetic level indicator with level transmitter for liquids in redundant measurement
Designed for redundant level measurement combining magnetic level indicator and guided radar (TDR), radar (FMCW) or displacer technology
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
Icon/Logo Security Integrity Level 2/3 (SIL 2/3)
Options
Specifications
Depending on selected device configuration
General information
Product type Level indicator
Product family name BM
Product positioning For liquids in redundant measurement
Measurement principle Radar (FMCW), Displacer, Guided radar (TDR), Float
Level measurement type Continuous measurement
Contact to measured medium Yes
Interface measurement Yes
Redundancy Yes
Measured media Liquids
Measuring range (liquids) 0.3…5.5 m/
1...18 ft (other on request)
Measuring point Bypass
Operating conditions
Process temperature
Version with OPTIFLEX 7200:
-50…+250°C/
-58…+482°F
Version with OPTIFLEX 8200:
-50…+315°C/
-58…+599°F
Version with OPTIWAVE 7400:
-50…+200°C/
-58…+392°F
Version with BW 25:
-40…+400°C/
-40...+752°F
Materials
Gaskets Depending on selected device configuration
Wetted parts Depending on selected device configuration
Process connections
Flange connections EN (1092-1): DN15…50
ASME (B 16.5): ...2″
Approvals/Standards
Certificates/Approvals Ex ATEX, IECEx
Certificates/Approvals Safety SIL 2/3
Communication
Analogue outputs 4…20 mA
Discrete outputs Limit switches
Digital outputs FOUNDATION Fieldbus, HART, Profibus-PA
Accuracy
Accuracy (liquids)
Indicator: ±10 mm/0.39 in
(optional: ±5 mm / 0.2 in with LT40)
OPTIFLEX/OPTIWAVE: ±2 mm /0.08 in
SKU
BM26A-8000
Details
Overview
The BM26A-8000 is a magnetic level indicator (MLI) for redundant level measurement in liquid applications. It comes in two versions: BM26A-8000-TWIN and BM26A-8000-BI. The BM26A-8000-TWIN consists of a double measuring chamber with one chamber featuring a flapper indication and the other one – equipped with a level transmitter (TDR guided radar, FMCW radar or displacer) – acting as a bypass chamber. The BM26A-8000-BI features a unique measuring chamber with two compartments, one for the OPTIFLEX 7200 transmitter probe and one for the float moving next to it.
Features & Options
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
- Combined technology for redundancy
- Can be fitted with OPTIFLEX 7200 or OPTIFLEX 8200 guided radar (TDR), OPTIWAVE 7400 radar (FMCW) or BW 25 displacer level transmitter
- Also available as TWIN version with a dual bypass chamber connected adjacently
- Rugged metallic design – no maintenance
- Large choice of materials e.g. 316L, 304L, alloy C276, alloy 625
- Highly visible flaps housed in hermetically sealed glass tube (IP68)
- Accuracy from ±2 mm / ±0.08″ with OPTIFLEX and OPTIWAVE level transmitters
Typical applications
General
- Redundant measurement in liquid applications up to +400°C / +752°F
- Interface measurement
- Safety-related applications up to SIL2/3
Oil and gas industry
- Level control on process and storage tanks for oil and other hydrocarbons
- Oil / water interface measurement in high- and low-pressure separators
Chemical industry, petrochemical industry
- Redundant level control and interface measurement of various chemicals and refined products such as:
- Refined products (e.g. gasoline, ethylene etc.)
- Toluene, xylene, naphtha, gas condensate
- Heat transfer fluids (e.g. Therminol®) and glycol
- Alcohols
Power industry
- Redundant level monitoring in the steam cycle of power plants (e.g. steam condensate, boiler feedwater etc.)
- Level monitoring on heat exchangers
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