Flow Measurement without Moving Parts

Measuring Ranges0.29...26.4 to 431.6...43,333 GPM (Water)
Fittings½"...24" ANSI CL150/300, DN15-DN600 DIN Flange, Tri-Clamp®
Wetted Materials Hard Rubber, Soft Rubber or PTFE-Lined Flow Tube, SS/Hastelloy C®/Tantalum/Titanium/Platinum Electrodes
Max. Pressure Per Flange Rating
Max. Temperature 176 °F / 300 °F
Accuracy± 0.3% of Reading ± 0.01% x Qmax
Output4-20 mA Analog, Pulse Frequency Outputs, LCD Rate/Totalizer Display
Range0,2-20...35-3500 Nm³/h (Air)
FittingsDN25... 200 Flange, ANSI 1"...8"
Wetted Materials Stainless Steel
Maximum Pressure40 Bar
Maximum Temperature248°F (120°C)
Accuracy± 1.5 % of Measured Value (Air)
OutputPulse Frequency, Digital Display for Flow Measurement & Totalization
Measurement PrincipleTime-of-flight w/DSP (Transit Time Principle)
Flow Velocity Range0...98 ft/sec
Pipe Size Range3/8"...20 Feet
Temperature Range-40...300 °F
Accuracy up to 1% of Reading
Measuring Ranges 0.02...5 GPM to 0.6...160 GPM
Accuracy± 0.7 % of Rate and ± 0.7 % F.S.
Fittings½"...3" NPT or G (BSPP)
MaterialBrass or 316 Stainless Steel
Maximum Temperature248 °F
Maximum Pressure230 PSIG
Turndown Ratio250 to 1
OutputsAnalog, Frequency, Switching, Compact Electronics w/ Digital Displays, Batching and Totalizing Electronics
Process ConnectionANSI, DIN Wafer Flange or Threaded via Compression Fitting
Line Sizes DN80...DN600, (3"...24")
Wetted Materials 316L St. Steel
Input Power 12-36 VDC (2 & 4 Wire), 85-240 VAC 50/60 Hz
DisplayAlphanumeric 2 Line x 16 Character LCD
Fittings1/2”...8” ANSI Flanges, 1/2"...4" ANSI Wafer
Wetted MaterialsHousing/Bluff Body/Flanges - 316L St. Steel (Standard)
Input Power 12-36 VDC (2 & 4 Wire), 85-240 VAC 50/60 Hz
Optional DisplayAlphanumeric 2 Line x 16 Character LCD
Range 0.13...1.2 GPM to 2.7...26 GPM
Fittings¼"...1" NPT & G¼...G1
Fitting MaterialNi-Plated Brass, SS
Max. Pressure 145 PSIG / 290 PSIG
Max. Media Temperature176 °F
Accuracy± 2.5% of Full Scale
Selectable Sensing Range0 ... 2000 / 3000 / 4000 ft/min
Body/Housing MaterialPolycarbonate
Media Temperature Range-13 ...122 °F
Power Supply24 VAC/VDC ± 20%
Signal Output4-20 mA or 0-10 VDC
Media Humidity Range 5 ... 95 % RH (Non-condensing)
Switching Range 0.2...6.6 ft/s
Fittings 1/4"...1-1/2" NPT
MaterialBrass, SS
Max. Pressure 1450 PSI
Max. Temperature 176/250 °F
OutputRelay Outputs for Flow and Temperature Monitoring
Sensing Range 0.16...6.6 ft/s (Water)
Fittings1/2" NPT, 3/4" NPT, 1½" Tri-Clamp®
Wetted Material304, 316-Ti SS
Max. Pressure 1450 PSIG (with NPT Connection)
Max. Temperature 176 °F
RepeatabilityApprox. 1%
Output Signal4-20 mA, 3-Wire (Non-Linear)
Optional SwitchPNP Transistor, 400 mA Max.
Switching Range 0.15...6.6 ft/sec (Water)
Fittings ¼" NPT, ½" NPT, M12 x 1, G¼, G½
Wetted Material316-Ti SS
Maximum Pressure580 PSIG
Max. Media Temperature 176 °F
Repeatability ± 2 %
Switch OutputPNP/NPN, N/O, N/C (Specified upon Ordering)
Switching Range0.2...6.6 ft/s (Water)
Fittings½" or 3/4" MNPT, 1½" Tri-Clamp®
Wetted Material304 or 316-Ti Stainless Steel
Max. Pressure1450 PSIG (with NPT Connection)
Max. Operating Temperature250 °F
Input Power24 VDC ± 10%, 110 VAC Optional
OutputNPN/PNP Transistor, N/O Relay Only w/110 VAC Version
Measuring Range1...20 m/s (Air)
Fittings½" NPT, Flange
OutputSPDT Relay, Max. 250 VAC / 1000 VA / 4A
Max. Pressure 120 PSIG
Max. Temperature250 °F
Switching Accuracy± 10% of Reading
Measuring Range 0.2...90 Nm³/h ... 5...2840 Nm³/h (Air), Max. 224 Nm/s
Accuracy±1.5 % of Reading ±0.3 % of Full Scale
Maximum Pressure 100 Bar
Maximum Temperature180°C
Process ConnectionG ½...G 2, ½"...2" NPT, DN15...80 PN40 Flange, ½"...3" ANSI Class 150 & 300
Wetted Material1.4571 St. Steel, Glass
Output Modbus RTU, 2x 4-20 mA, Modbus TCP, pulse, alarm
Measuring Range0.1...0.5 to 400...2000 GPM
Fittings ½"...1½" NPT or BSP, 1/2"... 8 " ANSI or DIN Wafer
Body MaterialBrass, Brass/Cast Iron or SS
Accuracy ±2 to ±5% FS (Depending on the Model)
Max. Temperature 150 °F or 250 °F (Depending on the Model)
Max. Pressure230 PSIG
Measuring Range 0.2...76.3 to 0.6...212 Nm3/h (Air)
Accuracy± 3 % of Reading + 0.3 % of Full Scale
Maximum Pressure16 Bar
Operating Temperature-20…60 °C
Process Connection½", ¾" & 1" BSP and NPT Threaded
Wetted MaterialsAluminum, Stainless Steel, Glass
Outputs PNP Transistor Switch, Analog Current, Pulse
Measuring Range 0.32...63 Nm³/h to 263.4...263350 Nm³/h (Air)
Accuracy±1.5 % of Reading +0.5 to +0.8% of Full Scale
Maximum Pressure16 Bar
Maximum Operating Temperature+80 °C
Process ConnectionG ½...G 2 & ½...2" NPT with ball valve, R½ Threaded Version for DN65...300
Wetted MaterialsStainless Steel, Glass, Brass
OutputsAnalog Output / Switch Outputs / Pulse Outputs
Maximum Pressure420 Bar (Class 2500 tmax +500 °C )
Maximum Temperature100° C
Process ConnectionDN 50 ... DN 600, 2" ... 24" ASME Flanged
Wetted MaterialStainless Steel, Carbon Steel, Others
Measuring Ranges 0...10 SCCM to 0...500 SLPM
Fittings¼" NPT, ½" NPT, ¼"...½" Swagelok®
Body Material Polyamide, Aluminum, SS
Max. Pressure 100 PSIG (Polyamide, Aluminum), 500 PSIG (SS)
Max. Media Temperature120 °F
Accuracy± 1.5% F.S. at 15...25°C & 5...60 PSIA
Input Power12 VDC Standard, 24 VDC Optional
Output Signal (Linear) 0-5 VDC Standard, 4-20 mA Optional
Available Ranges 0.18...7.8 GPH to 9...180 GPM (Water)
Accuracy± 2% of Full Scale
Repeatability± 1% of Full Scale
Media Temp. Range32...176 °F (140 °F Max. w/PVC Fittings)
Media Conductivity Minimum 30 μS/cm (Minimum 200 μS/cm for Range Codes U0 & U1)
Maximum Pressure145 PSIG @ 70 °F
Max. Pressure Drop3.6 PSI @ 100% Rated Flow
Max. Viscosity20 cSt for ranges U0...U8, 70 cSt for ranges UA...UH
Wetted MaterialsPPS/SS/NBR, PPS/SS/FKM, PVDF/Hastelloy®/FFKM, PVDF/Tantalum/FFKM
Process Connection Range G½...G1, ¼"...½" NPT, ½...1" Hose Barb
Connection Material PVC, Polypropylene, PVDF, 316SS, Brass
Maximum Pressure230 PSIG
Maximum Temperature158 °F
Housing Material316L Stainless Steel
Accuracy< ±(0.8% of Reading + 0.5% of Full Scale)
Pipe Diameter150...2000 mm (6"...78")
Accuracy± 1.5% of Reading, ± 0.5% of Span (at Reference Conditions)
FittingInsertion Weld Sleeve with ANSI or DIN Mounting Flange
Adjustable Span 1...10 m/s (3.3...33 Ft/Sec.)
Measuring Range1...10 m/sec (3.28... 32.8 ft/sec)
Accuracy (>30% URV)±1.5% of Reading
Maximum Pressure 230 PSIG to 90 °C (194 °F), 200 PSIG to 100 °C (212 °F)
Maximum Temperature100 °C (212 °F)
Process ConnectionWelding Stub and M52 x 2 Union Nut for 3" to 16" pipes
Wetted MaterialStainless Steel / PTFE, Hastelloy® Electrodes
OutputAnalog with HART®, Pulse, and Status
Measuring Range0.2...0.88 to 100...600 GPM (Water) / 0.3...3 to 250...1650 SCFM (Air)
Fittings½"...3" NPT
Body Material Brass, 316-Ti SS
Max. Pressure580 PSIG
Max. Temperature176 °F / 212 °F
Accuracy± 3 % FS
Display/OutputMech. Pointer Indicator, Analog Output, Digital Display, Switches
Accuracy± 3% Full Scale
Measuring Ranges0.5...4 GPH to 400...3000 GPM (Liquids) / 5...40 SCFH to 3000...20000 SCFM (Gases)
Fittings¼"...3" NPT, ½"...8" Wafer
Body MaterialBronze, Monel or SS
Media Temperature-30...212 °F (Standard)
Optional High-Temp Design-80...350 °F
Maximum Pressure 180 PSIG (Standard)
Optional High Pressure Design 400 PSIG
Mass Flow Measuring Ranges0.003...0.3 Lb./Min. to 220...2400 Lb./Min.
Sizes¼"...3"
Accuracy (Mass Flow) ± 0.1% of Reading
Fittings NPT, BSPP, SAE Thread; ANSI, DIN, JIS Flange, Others on Request
Max. Operating Temperature Up to 500 °F (Depending on Model)
Mass Flow Measuring Ranges2.2...22 Lb/Min to 220...2200 Lb/Min
Accuracy (Liquids) ± 0.15% of Actual ± ZP-stability (for Mass Flow)
Accuracy (Gases) ± 0.5% of Actual ± ZP-stability (for Mass Flow)
Fittings ANSI CL 150/300 Flange, Others upon Request
Max. PressurePer ANSI CL 150/300
Max. Operating TemperatureUp to 356 °F (Depending on Model)
Mass Flow Measuring Ranges 2.2...22 Lb/Min. to 220...2200 Tons/Hr.
Line Size ¼"...10" Standard (to 16" Upon Request)
Accuracy± 0.15% of Reading or Better
Fittings NPT Thread, ANSI CL 150/300 Flange, Others Upon Request
Max. Pressure580 PSIG Standard (Higher Upon Request)
Max. Operating TemperatureUp to 500 °F (Depending Upon Model)
Other Members of the KOBOLD Group:Henschen, Unirota, Heinrichs, MesUra Henschen GmbH KOBOLD Unirota Kft. Heinrichs KOBOLD Group MesUra KOBOLD Messring GmbH
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