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AALBORG mass flow meter DFM series


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Product Description

Technical parameters of DFM series mass flow meter



Model27,37,47Temperature/Flow accuracy of pressure hardware (including linearity)

From0-50℃ (32-122℉) and0.35-6.8bars(5-100psia)is ±1%Full scale

Model26,36,46 Temperature/Flow accuracy of pressure hardware (including linearity)

±1%Full scale, at calibration temperature and pressure including non-linearity

Pressure range (measurement)

0.34-6.8 bars(5-100a)

Pressure accuracy

±1%Full scale

Temperature range (measurement)

0-50℃ (32-122℉)

Temperature accuracy



±0.15%Full scale

Response time

0.6-1seconds to the set point2%, multiple and full-scale20%-100%

temperature coefficient

0.15%/C or better.

pressure coefficient

0.01%(full scale)/0.07Bar(1psi) or better

Optional gas pressure

1.73 bars(25 psig)

Maximum gas pressure

6.8 bars(100 psig)

Maximum bursting pressure

13.6 bars(200 psig)

Maximum drop pressure

0.55 bars(8 psig)100L/Minimum flow

Gas/Ambient temperature

5-50℃ (41-122℉)

Output signal

Linearity0-5Vdc,(Minimum3000ohms. load resistance)

0-10Vdc, (Minimum6000ohms. load resistance)

4-20mA Optional (max.500ohms. Loop resistance)

Maximum noise20mA

Input power

Three different options can be configured

±15Vdc(max. ±200MA)



The circuit board has a built-in electrode reversal protection fuse can be re-adjusted to provide power input protection

Fluid contact material

316Stainless steel, vito ring,EPR, Dinar Rubber


DFM26:1/4” Thread of ferrule

DFM36:1/4” Thread of ferrule

DFM46: ferrule thread

Optional1/8”or 3/8” ferrule thread and1/4”VCRThread



Calibration Options

Standard10PointNISTCalibration; optional additional up to 9 calibrations (additional charge)


Installation Level II   Pollution Level II


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