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Thermal Dispersion Mass Flow Meters Switches

Thermal Dispersion Mass Flow Meters Switches

Thermal mass flow meters measure the flow rate of gas by using two temperature sensors. The temperature difference between a reference sensor and a measurement sensor, which undergoes heat dissipation via the flow of the media, can be calculated into a flow measurement. This technology is particularly suited for applications requiring the measurement of low flow rates and low pressure gas. Thermal mass flow meters provide direct measurement of mass flow, eliminating the need for pressure and temperature compensation.

These meters are appreciated for their accuracy and responsiveness in measuring gas flow rates. They can be used in a wide range of gas types and mixtures, offering compatibility with many industrial processes. The non-intrusive design and lack of moving parts reduce maintenance requirements and enhance the meter's longevity, making thermal mass flow meters an efficient and reliable choice for gas flow measurement.

KAH
Anemometer Air Flow Sensor

For Gas | Low Flow Velocities | User Selectable Sensing Range | Adjustable Probe Insertion Depth | Adjustable Damping Time | Up to 4,000 ft/min | Up to 122 °F

Starting at $550
Selectable Sensing Range
0 ... 2000 / 3000 / 4000 ft/min
Body/Housing Material
Polycarbonate
Media Temperature Range
-13 ...122 °F (50 °C)
Power Supply
24 VAC/VDC ± 20%
Signal Output
4-20 mA or 0-10 VDC
Media Humidity Range
5 ... 95 % RH (Non-condensing)
Media Category
Gas
    Easy Installation
    User Selectable Sensing Range
    Adjustable Probe Insertion Length
    Adjustable Damping Time
    Sample Applications: HVAC and Process/Environmental Control
KAL
Thermal Flow Switch

Made in the USA | For Liquids | Monitors Flow and Temperature | up to 6.6 ft/sec | up to 1450 PSIG | up to 250 °F | 1/4" to 1-1/2" NPT | Brass or SS | Low Pressure Loss

Starting at $229
Switching Range
0.2...6.6 ft/s
Fittings
1/4"...1-1/2" NPT Thread
Material
Brass, SS
Max. Pressure
1450 PSI
Max. Temperature
176 (80 °C) /250 °F (120 °C)
Output
Relay Outputs for Flow and Temperature Monitoring
Media Category
Liquid
    Remote Probe Allows Installation with Minimal Clearance
    Can be Used with Low or High Flow Velocities
    No Moving Parts
    Extremely Low Pressure Loss
    Simultaneous Monitoring of Temperature and Flow
    Easy to Operate
    Insensitive to Dirt
    Made in the USA
KAL-A
Thermal Dispersion Flow Meter

Made in the USA | For Water-based Liquids | Insensitive to Dirt and Debris | Low Pressure Loss | Up to 6.6 ft/sec | Up to 1,450 PSI | Up to 176 °F | NPT or Tri-Clamp Threads

Starting at $840
Sensing Range
0.16...6.6 ft/s
Fittings
1/2" NPT or 3/4" NPT Threads, 1½" Tri-Clamp®
Wetted Material
304, 316-Ti SS
Max. Pressure
1450 PSIG (with NPT Connection)
Max. Temperature
176 °F (80 °C)
Repeatability
Approx. 1%
Output Signal
4-20 mA, 3-Wire (Non-Linear)
Optional Switch
PNP Transistor, 400 mA Max.
Media Category
Liquid
    Revolutionary Microprocessor-Based Drift Stabilization
    NPT and 3A Compliant Sanitary Fittings
    No Moving Parts
    Extremely Low Pressure Loss
    Easy to Operate
    Insensitive to Dirt & Debris
    Made in the USA
    Top Seller
KAL-D
Compact Insertion Thermal Flow Switch

Made in the USA | For Liquids | Stainless Steel Build | Up to 6.6 ft/sec | Up to 580 PSI | Up to 176 °F | NPT Threads

Starting at $452
Switching Range
0.15...6.6 ft/sec
Fittings
¼" NPT, ½" NPT, M12 x 1, G¼, G½ Thread
Wetted Material
316-Ti SS
Maximum Pressure
580 PSIG
Max. Media Temperature
176 °F (80 °C)
Repeatability
± 2 %
Switch Output
PNP/NPN, N/O, N/C (Specified upon Ordering)
Media Category
Liquid
    Stainless Steel Housing
    No Moving Parts
    Compact Design
    Made in the USA
    Top Seller
KAL-K
Thermal Flow Switch with Flow Trend Indication

Made in the USA | For Water-based Liquids | Drift Stabilization | No Moving Parts | Negligible Pressure Loss | Up to 1,450 PSI and 250 °F | NPT and Tri-Clamp Fittings

Starting at $449
Switching Range
0.2...6.6 ft/s
Fittings
½" or 3/4" NPT Thread, 1½" Tri-Clamp®
Wetted Material
304 or 316-Ti Stainless Steel
Max. Pressure
1450 PSIG (with NPT Connection)
Max. Operating Temperature
250 °F (120 °C)
Input Power
24 VDC ± 10%, 110 VAC Optional
Output
NPN/PNP Transistor, N/O Relay Only w/110 VAC Version
Media Category
Liquid
    Revolutionary Microprocessor-Based Drift Stabilization
    NPT and 3A Compliant Sanitary Fittings
    No Moving Parts
    Negligible Pressure Loss
    Easy to Operate
    Insensitive to Dirt
    Made in the USA
    Top Seller
KAL-L
Insertion Thermal Air Flow Switch

Temperature Compensated | Easy to Install | Adjustable Response Time | Up to 66 ft/sec | Up to 120 PSI | Up to 250 °F | NPT Thread or Flange | Suitable for HVAC

Starting at $710
Measuring Range
3.3...66 ft/sec
Fittings
½" NPT Thread, Flange
Output
SPDT Relay, Max. 250 VAC / 1000 VA / 4A
Max. Pressure
120 PSIG
Max. Temperature
250 °F (120 °C)
Switching Accuracy
± 10% of Reading
Media Category
Gas
    Negligible Pressure Loss
    No Moving Parts
    Adjustable Response Time
    Temperature Compensated
    Easy to Install
    Made in USA
KEC
Industrial Thermal Mass Flow Meter

For Gases | No Moving Parts | Fast Response Time | Up to 100 bar | Up to 180 °C | NPT Threads or ANSI 150/300 Flanges

Starting at $4,084
Measuring Range
0.2...90 Nm³/h to 5...2840 Nm³/h, Max. 224 Nm/s
Accuracy
±1.5 % of Reading ±0.3 % of Full Scale
Maximum Pressure
100 Bar
Maximum Temperature
180°C
Process Connection
G ½...G 2, ½"...2" NPT Thread, DN15...80 PN40 Flange, ½"...3" ANSI Class 150 & 300
Wetted Material
1.4571 St. Steel, Glass
Output
Modbus RTU, 2x 4-20 mA, Modbus TCP, pulse, alarm
Media Category
Gas
    Calorimetric Measuring Principle
    Fast Response Time
    No Moving Parts
    Sample Applications: Chemical, Petrochemical, Natural Gas, Methane, Pharmaceuticals, Food and Beverage, Breweries, Dairy Processing, Power Plants, and Automotive Industry
KET
Compact Inline Thermal Flow Sensor

For Gas | Direct Mass Flow Rate | up to 580 PSI | up to 176 °F | 1/2" to 2" NPT | Integral Flow Straighteners to Reduce Vortices | Alarm Contact, Modbus, Impulse or Analog Output

Starting at $2,078
Standard Accuracy
± 1.5 % of Reading ± 0.3 % of Full Scale
Optional Accuracy
± 1.0 % of Reading ± 0.3 % of Full Scale
Maximum Pressure
up to 230 PSI, optionally 580 PSI
Maximum Temperature
176°F (80 °C)
Process Connection
1/2"...2" NPT
Gas Types
Air, Nitrogen, Argon, C02, Oxygen
Media Category
Gas
    Removable Sensor Unit
    Direct Mass Flow Rate for Gases
    No Inlet Straight Piping Requirements
    Fast Response Time
    Integral Flow Straightener to Reduce Vortices
    Analog Output, Alarm Contact, Modbus, or Impulse Output
KME
Compact Inline Flow Meter

For Gas | up to 16 bar | up to 60 °C | 1/2" to 1" NPT | Optional Display | Air & Non-Corrosive Gases | PNP Transistor Switch, Analog Current, or Pulse

Starting at $1,515
Measuring Range
0.2...76.3 to 2.2...848 Nm3/h
Accuracy
± 3 % of Reading + 0.3 % of Full Scale
Maximum Pressure
16 Bar
Operating Temperature
-20…60 °C
Process Connection
½", ¾" & 1" BSP and NPT Threaded
Wetted Materials
Aluminum, Stainless Steel, Glass
Outputs
PNP Transistor Switch, Analog Current, Pulse
Media Category
Gas
    Optional Display
    Modular Design
    Hot Film Sensor Element
    For Air & Other Non-Corrosive Gases
    Sample Applications: Compressed Air Consumption, Technical Gas Measurement, Nitrogen Generators, and Leak Detection
MAK
Thermal Mass Flow Meter

For Gas | up to 500 Nl/min | up to 6 bar | up to 50 °C | NPT or Compression Fittings | Stainless Steel | Direct Mass Flow Measurement | Menu Selectable Gas Types

Starting at $3,322
Measuring Range
0...10 Nml/min, 0...50 to 0...200 Nl/min, 0...300 to 0...500 Nl/min
Accuracy
±1...1.5 % of Full Scale
Maximum Pressure
6 Bar
Maximum Temperature
50 °C
Process Connection
¼ ... ½" Compression Fitting or ¼" NPT
Wetted Material
Stainless Steel
Output
4-20 mA, 0-5 / 1-5 V, or Modbus
Media Category
Various Gas Types, Menu-Selectable
    Direct Mass Flow Measurement
    No Pressure or Temperature Correction Needed
    Large Measuring Range
    Negligible Pressure Loss
    High Repeatability

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