Nagman Flow
Nagman Flow

Thermal Mass Flow Meter

Working on the principle of heat transfer, this meter measures the mass flow of gases directly with high accuracy and minimal maintenance.

Petroleum

Petroleum

Chemical

Chemical

Fuels / Petrochemicals

Fuels / Petrochemicals

Gases

Gases

Food industries

Food industries

Pharmaceutical

Pharmaceutical

Durable and Low maintainence

Durable and Low maintainence

High accuracy and Low Maintenance.

High accuracy and Low Maintenance.

Wide Measuring Range

Wide Measuring Range

Very Low Noise and Vibration

Very Low Noise and Vibration

MediumGas (Except Acetylene)
Pipe sizeDN10 – 4000mm
Sensor typeStandard Insertion, Hot-Tapped Insertion and Flanged
ConstructionCompact and Remote
Sensor Housing MaterialSS304 or SS 316
Pipe MaterialCarbon Steel, Stainless Steel, Plastic, etc
Velocity0.1-100 N/ms
Medium TemperatureSensor: -30 ~ +200℃; Max.350℃
Transmitter: -20 – +45℃
Working PressureMedium Pressure ≤ 1.6 MPa
Accuracy±1.0 ~ 2.5%
Power SupplyCompact type: 24VDC or 220VAC, Power Consumption ≤ 18W
Remote type: 220VAC, Power Consumption ≤ 19W
Response Time1S
Output4-20mA (Optoelectronic Isolation, Maximum load 500Ω), Pulse,
RS485 (Optoelectronic Isolation) and HART
Alarm Output1-2 line Relay, Normally Open State, 10A/220V/AC or 5A/30V/DC
Display4 lines LCD display Mass flow, Volume flow in standard condition, Flow totalizer, Date
and Time, Working time, and Velocity, etc.
Protection ClassIP65

FAQs

A Thermal Mass Flow Meter measures the mass flow rate of gases by detecting how much heat is carried away from a heated sensor by the moving gas.
The Thermal Mass Flow Meter uses a small heater and temperature sensors. As gas flows past, it cools the heater, and the meter calculates mass flow from the change in temperature.
> Direct mass flow measurement without separate pressure or temperature compensation
> Fast response and stable, repeatable output
> No moving parts, so maintenance is minimal
> Can also provide gas temperature and totalized flow as outputs
A Thermal Mass Flow Meter can measure most clean or slightly moist gases, such as air, nitrogen, natural gas, and many industrial process gases.
Depending on the model, a Thermal Mass Flow Meter typically achieves ±0.5 % of reading or better, ensuring precise and reliable gas flow measurement.
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