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454FTB Series Single-Point Insertion Flow Meter
Brand: Kurz Instruments
The Kurz Series 454FTB is the premier single-point insertion thermal mass flow meter for industrial gas flow measurements.
The 454FTB supports process temperatures from -40° to 260° C and from -40° to 500° C, process pressure ratings up to 300 psig, and a velocity range from 0 to 24,000 SFPM.
Features- Built‐in dry gas flow calculation on all flow units for saturated processes
- Variable CH₄ composition for a CH₄/CO₂ gas mix.
- Up to five user-selectable pure or mixed gas calibration curves
- Interchangeable sensor and electronics (single circuit board) - no matched sets
- Continuous self‐monitoring electronics that verify the integrity of sensor wiring and measurements
- Zero velocity as a valid data point
- Sensor does not overheat at zero flow by using a unique constant temperature control method and power limiting design
- Supports HART, Profibus DP, and Modbus communication protocols
- Sensor Blockage Correction Factor (SBCF)
- Flexibility with transmitterattached or transmitter-separate designs
- Fogging in stacks and around fan inlets can be monitored
- Accurate and real time digester measurements reveal digester imbalances, enabling early corrective action
Specifications
Brand
Accuracy
- 16-bits
- Flow Accuracy: ± 1 % of Reading +20 SFPM
- Temperature Accuracy: ± [0.5 % of Reading +1° C (1.8° F)] for Velocities Above 100 SFPM
Applications
- Aeration Air & Treat Biogas
- Boilers & Recovery Boilers
- Cement Plants
- Coal Pulverizer Air
- Compressed Air
- EPA & AMS Emissions Monitoring
- Flare Gas
- Industrial & Process Gases
- Primary, secondary, Tertiary & Overfire Air
- Stack & Flue Gas
Approvals & Certifications
- ATEX
- CE
- CRN
- CSA Class I, Div. 1 & 2
- EMC
- EN IEC 60079.0, EN IEC 60079-1, EN IEC 60079-15
- EPA Mandatory GHG Certification: 40 CFR 98.34(C)(1)
- LVD
- NAMUR NE43
- PED
- RoHS
- TÜV Rheinland SIL 1
- WEEE
Communication
- HART (v7 FSK)
- Modbus
- PROFIBUS DP
- RS-485
- USB
Display
- Backlight Display
Enclosure, Body Material
- Aluminum
- Polycarbonate
Environmental Protection
- IP54
- IP66
- NEMA 4
Flange Material
- 316L Stainless Steel
- C-276 Alloy with Abrasion-Resistant Aluminum Titaniu Nitride (AlTiN) Coating
- C-276 Alloy with PTFE Coating
- C-726 Alloy
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150#
- 1-1/2” (DN 40) - 300#
Flange Size - 1-1/4” (DN 32)
- 1-1/4” (DN 32) - 150#
- 1-1/4” (DN 32) - 300#
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150#
- 1” (DN 25) - 300#
Flange Size - 1/2” (DN 15)
- 1/2” (DN 15) - 150#
- 1/2” (DN 15) - 300#
Flange Size - 2-1/2” (DN 65)
- 2-1/2” (DN 65) - 150#
- 2-1/2” (DN 65) - 300#
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150#
- 2” (DN 50) - 300#
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150#
- 3” (DN 80) - 300#
Flange Size - 3/4” (DN 20)
- 3/4” (DN 20) - 150#
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150#
- 4” (DN 100) - 300#
Input Power
- 24 Vdc ± 10 %, 1 A, Max.
- 85-264 Vac 50/60 Hz, 24 W, Max.
Length
- Sensor Support Length: 6” to 60” (152 to 1524 mm)
Loop Resistance
- Maximum
Materials of Construction
- Sensor Support: 316L Stainless Steel (Standard)
- Sensor Support: C-276 Alloy (Optional)
- Sensor Support: PTFE-Coated (Optional)
NACE & NIST
- NIST
Operating Temperature - Electronics
- Integral Display: -25° to 65° C (-13° to 149° F)
- Remote Aluminum Enclosure: -40° to 65° C (-40° to 149° F)
- Remote Polycarbonate Enclosure: -25° to 50° C (-13° to 122° F)
Output
- 4-20 mA Optically-Isolated Loop Powered 4-20 mA Output (± 48 Vdc Isolation)
Pressure Rating
- Up to psig: 300 (barg: 20.68, kPa: 2068.43)
Process Temperature
- -40° to 260° C (-40° to 500° F) HT
- -40° to 500° C (-40° to 932° F) HHT
Range
- Velocity Range: 0 to 70,000 SFPM (325 NMPS)
Repeatability
- 0.25%
Resolution
- 16-bits
Sensor, Probe Diameter
- 1” (25.4 mm)
- 1/2” (12.7 mm)
- 3/4” (19.05 mm)
Sensor, Probe Material
- C-276 Alloy All-Welded Sensor Construction (Standard)
Time Constant
- Process Temperature Time Constant: 8 seconds for Temperature Changes at 6,000 SFPM (Constant Velocity)
- Velocity Time Constant: 1 second for Velocity Changes at 6,000 SFPM (Constant Temperature)
- Aeration Air & Treat Biogas
- Boilers & Recovery Boilers
- Cement Plants
- Coal Pulverizer Air
- Compressed Air
- EPA & AMS Emissions Monitoring
- Flare Gas
- Industrial & Process Gases
- Primary, Secondary, Tertiary & Overfire Air
- Stack & Flue Gas
The rugged design of the 454FTB is built for demanding environments including:
- Chemical & Petrochemical Processing
- Power
- Wastewater
- Pulp & Paper Mills
- Cement
- Nuclear
Any application where durability, accuracy, and repeatability are required, such as:
- Combustion Control
- Greenhouse Gas Emissions
- Air Sampling
- Stack & Flare Monitoring