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 - Air Velocity Sensor
KAH - Air Velocity Sensor
Selectable Sensing Range
0 ... 2000 / 3000 / 4000 ft/min
Body/Housing Material
Polycarbonate
Media Temperature Range
-13 ...122 °F
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
KAL - Temperature-Compensating Thermal Flow Switch for Water-Based Liquids
KAL - Temperature-Compensating Thermal Flow Switch for Water-Based Liquids
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
176/250 °F
Output
Relay Outputs for Flow and Temperature Monitoring
Media Category
Liquid
KAL-A - Thermal Flow Sensor for Water-Based Liquids
KAL-A - Thermal Flow Sensor for Water-Based Liquids
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
Repeatability
Approx. 1%
Output Signal
4-20 mA, 3-Wire (Non-Linear)
Optional Switch
PNP Transistor, 400 mA Max.
Media Category
Liquid
KAL-D - Compact Thermal Flow Switch for Water-Based Liquids
KAL-D - Compact Thermal Flow Switch for Water-Based Liquids
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
Repeatability
± 2 %
Switch Output
PNP/NPN, N/O, N/C (Specified upon Ordering)
Media Category
Liquid
KAL-K - Thermal Flow Switch with LED Flow Trend Indication for Water-Based Liquids
KAL-K - Thermal Flow Switch with LED Flow Trend Indication for Water-Based Liquids
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
Input Power
24 VDC ± 10%, 110 VAC Optional
Output
NPN/PNP Transistor, N/O Relay Only w/110 VAC Version
Media Category
Liquid
KAL-L - Thermal Air Flow Switch
KAL-L - Thermal Air Flow Switch
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
Switching Accuracy
± 10% of Reading
Media Category
Gas
KEC - Thermal Energy Flow Meter
KEC - Thermal Energy Flow Meter
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
KET - Compact Inline Thermal Flow Sensor
KET - Compact Inline Thermal Flow Sensor
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
Process Connection
1/2"...2" NPT
Gas Types
Air, Nitrogen, Argon, C02, Oxygen
Media Category
Gas
KME - Compact Inline Flow Meter
KME - Compact Inline Flow Meter
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
MAK - Thermal Mass Flow Meter
MAK - Thermal Mass Flow Meter
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