Thermal gas mass flow meter is designed on the basis of thermal dispersion, and adopts method of
constant differential temperature to measuring gas flow. It has advantages of small size, easy installation,
high reliability and high accuracy, etc.
The meter contains two platinum resistance temperature sensors. The thermal principle operates by
monitoring the cooling effect of a gas stream as it passes over a heated sensor. Gas flowing through the
sensing section passes over two sensors one of which is used conventionally as a temperature sensor,
whilst the other is used as a heater. The temperature sensor monitors the actual process values whilst
the heater is maintained at a constant differential temperature above this by varying the power consumed
by the sensor. The greater the gas velocity, the greater the cooling effect and power required to maintain
the differential temperature. The measured heater power is therefore a measure of the gas mass flow
rate.
The format of gas velocity and power is shown as below:
��(1)
Where: is specific gravity of medium
V is velocity
K is balance coefficient
Q is heater power
Î? T is differential temperature
The medium temperature range of meter is -40ï½?220.
In the format (1), the specific gravity of medium is related to the density:
��(2)
Where: is the medium density in working conditionkg/m3
�n is the medium density in standard condition, 101.325kPa and 20 kg/m3
P is the pressure in working conditionkPa
T is the temperature in working condition
In the formats (1) and (2), there is a certain functional relationship between the velocity and pressure in
working condition, medium density, the temperature in working condition.
Due to the sensor temperature is always 30 higher than the medium temperature (environment
temperature), and the meter adopts method of constant differential temperature, therefore the meter do
not need to do temperature and pressure compensation in principle
Place of Origin: Shanghai, China (Mainland) Brand Name: GN Model Number: CX-XD600/300 Experience: More 20 years Exported: More 80 countries Warranty: One year Working: Stable and Reliable Standard: ISO and CE Technology: Advanced Maintenance: Easy and little Application: Widely Operation: Easy Function: Multiple
Flow-sensors Flow meter Flow meter sensor, flow sensors Product description Medium flow solution Food grade material, it can be worked in the water which temperature is 100, c. Wide operating voltage range Stable square wave signal No need external circuit, No need customer to install magnetic field General application: Teaset, supply equipment etc for civil use, and appliance for commercial use. Feature: The through type hall effect flo w sensor ah-001 is based on hall effect element, and it's very simple to use, the output signal is square wave, and it's accurate and reliable, the customer can use it by connect it as per the operating note, it can be applied in the digital circuit and mcu simply. The food grade material make it can be applied in different occasions, the operating temperature can reach 100, c.
Application field: The pt100/pt1000 thermal resistance sensor is used for precise temperature monitoring applications, where errors in measurement have to be excluded. The linear relationship of the resistor to temperature, simplifies its use in many electronic applications. The precision of the pt100/pt1000 allows its universal use for temperature monitoring, control and switching in windings, bearings, machines, motors, transformers and many other industrial applications. The product sells point 1.Very precise measuring: measuring temperature ía0.5 2.Precise linear temperature-resistance characteristic 3.Low weight 4.Short response time Key specifications/special features Nominal resistance: 100ª+at 0pt100, 1000ª+at 0pt1000 Basic thermistor values: for platinum measuring resistors as in chart Measuring range: -40 to 200, other ranges on request Measuring current: max.1ma(no self-heating!) Circuit: 2-wire 3-wire or customized
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Flow rate range: 10, 25, 50,100 l/min. Minimum unit setting: 0.01 l/min. (0.1 l/min when the flow rate range is 25, 50, 100 l/min.) Repeatability: ±1%F.S. or less. Grease-free Flow adjustment valve is integrated. (Reduced piping and space saving) Response time: Either 50 milli sec., 0.5 sec., 1 sec. or 2 sec. can be chosen. -
What's the introduction of Micro Oval Gear Flow Meter ? Micro Oval Gear Low Flow Meter is a kind of oval gear flow meter ,along to positive displacement flow meter. there is thousands of manufacturers who can produce oval gear flow meter. but only several manufacturer who have technology to produce micro liquid flow meter. Micro Oval Gear Flow Meter offer the highest accuracy and measure for various viscosity liquid. special patent technology to measure flow from 0.1ml/min and ensure working life more 5 years. Micro Oval Gear Low Flow Meter is wildly used for various industries for precision measurement. So far it has been serviced for more 100 using condition, such as fuel oil measurement, Adhesive control ,Hydraulic life cycle testing, electrolyte dosing, natural gas odorization. What's the main features of Micro Oval Gear Flow Meter? 1) Anti-dust,anti-vibration,anti-corrosive&explosion-proof. 2) Max accuracy up to 0.2% 3) Min flow : 0.1ml/min 4) Max temperature: 200C 5) Max pressure: 1000bar 6) Viscosity liquid:0.3~10000cps.
What's the introduction of Micro Oval Gear Flow Meter ? Micro Oval Gear Low Flow Meter is a kind of oval gear flow meter ,along to positive displacement flow meter. there is thousands of manufacturers who can produce oval gear flow meter. but only several manufacturer who have technology to produce micro liquid flow meter. Micro Oval Gear Flow Meter offer the highest accuracy and measure for various viscosity liquid. special patent technology to measure flow from 0.1ml/min and ensure working life more 5 years. Micro Oval Gear Low Flow Meter is wildly used for various industries for precision measurement. So far it has been serviced for more 100 using condition, such as fuel oil measurement, Adhesive control ,Hydraulic life cycle testing, electrolyte dosing, natural gas odorization. What's the main features of Micro Oval Gear Flow Meter? 1) Anti-dust,anti-vibration,anti-corrosive&explosion-proof. 2) Max accuracy up to 0.2% 3) Min flow : 0.1ml/min 4) Max temperature: 200C 5) Max pressure: 1000bar 6) Viscosity liquid:0.3~10000cps.
What's the introduction of Micro Oval Gear Flow Meter ? Micro Oval Gear Low Flow Meter is a kind of oval gear flow meter ,along to positive displacement flow meter. there is thousands of manufacturers who can produce oval gear flow meter. but only several manufacturer who have technology to produce micro liquid flow meter. Micro Oval Gear Flow Meter offer the highest accuracy and measure for various viscosity liquid. special patent technology to measure flow from 0.1ml/min and ensure working life more 5 years. Micro Oval Gear Low Flow Meter is wildly used for various industries for precision measurement. So far it has been serviced for more 100 using condition, such as fuel oil measurement, Adhesive control ,Hydraulic life cycle testing, electrolyte dosing, natural gas odorization. What's the main features of Micro Oval Gear Flow Meter? 1) Anti-dust,anti-vibration,anti-corrosive&explosion-proof. 2) Max accuracy up to 0.2% 3) Min flow : 0.1ml/min 4) Max temperature: 200C 5) Max pressure: 1000bar 6) Viscosity liquid:0.3~10000cps.
What's the introduction of Micro Oval Gear Flow Meter ? Micro Oval Gear Low Flow Meter is a kind of oval gear flow meter ,along to positive displacement flow meter. there is thousands of manufacturers who can produce oval gear flow meter. but only several manufacturer who have technology to produce micro liquid flow meter. Micro Oval Gear Flow Meter offer the highest accuracy and measure for various viscosity liquid. special patent technology to measure flow from 0.1ml/min and ensure working life more 5 years. Micro Oval Gear Low Flow Meter is wildly used for various industries for precision measurement. So far it has been serviced for more 100 using condition, such as fuel oil measurement, Adhesive control ,Hydraulic life cycle testing, electrolyte dosing, natural gas odorization. What's the main features of Micro Oval Gear Flow Meter? 1) Anti-dust,anti-vibration,anti-corrosive&explosion-proof. 2) Max accuracy up to 0.2% 3) Min flow : 0.1ml/min 4) Max temperature: 200C 5) Max pressure: 1000bar 6) Viscosity liquid:0.3~10000cps.
