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Thermal gas mass flowmeter

The DPLTMF series tubular thermal flowmeter is a flow instrument designed based on the principle of thermal diffusion. When a fluid flows through a heating object, the amount of heat lost by the heating object is proportional to the flow rate of the fluid. The sensors of this series of flowmeters have two standard level RTDs, one used as a heat source and the other for measuring fluid temperature. When the fluid flows, the temperature difference between the two is linearly related to the flow rate. This relationship is then converted into a measurement flow signal for linear output through microelectronic control technology.

The connection methods for the pipe section of the thermal mass flowmeter include flange connection, clamp connection, and threaded connection. Users can choose according to the on-site situation.

Product Characteristics

Easy installation, simple maintenance, bidirectional detection, anti vibration;

Up to 24 point flow measurement;

Correction of output analog quantity;

Multi point nonlinear curve correction;

Wide range ratio 100:1;

Simultaneous detection of flow and temperature, switching display;

Large caliber small flow measurement, capable of leak detection;

Encapsulating sensors using proprietary technology with a "dual balanced structure";

Exclusive high humidity and high temperature algorithm, with a medium temperature of up to 500 ℃;

Direct mass flow detection without temperature and pressure compensation.

Product ParameterDocument Download

structural style

Pipe section type

Measurement medium

Various gases (excluding acetylene gas)

Pipe diameter range

DN15~DN200mm

flow rate range

0.1~120Nm/s

accuracy

±1~2.5%

operation temperature

Sensor: -40 ℃~+220 ℃;  Converter: -20 ℃~+45 ℃

Working pressure

Medium pressure: 4.0MPa

power supply

DC24V or AC220V≤18W

response speed

1s

output signal

4-20mA (photoelectric isolation, maximum load 500 Ω)Pulse; RS-485 (photoelectric isolation);  hart protocol

call the police

1-2 relay normally open contacts;  10A/220V/AC; 5A/30V/DC

Supply type

Split structure;  Integrated structure

Pipe Material

Carbon steel;  Stainless steel

local display

Four line Chinese character LCD display

show contents

Mass flow rate;  Standard volume flow rate; Accumulated traffic; Standard time; Accumulated running time; Standard flow rate, etc

protection grade

IP65

Sensor material

Stainless steel;  carbon steel