SILVER AUTOMATION INSTRUMENTS LTD.
Product Category

Low-Flow Flow meter

When talking about small lines and low flow rates gas and liquid flow measurement, we have some reliable recommendations, such as mini thermal mass flow meters, low flow liquid turbine flow meter, metal tube Rotameter. See below general introductions for the rugged low flow meters also at low price cost.

Micro type Low flow Thermal Mass Flow meter
low flow flow meter gas

It employs the thermal dispersion principle whereby the rate of heat absorbed by a gas or air flowing in a closed pipe or duct is directly proportional to its mass flow passing.

Thermal flow meters are frequently used for the regulation of low gas flows or air flow, It is a kind of gas flow controller.

Features:


  • Low Gas flow range:


DN(mm)

Min(mL/min)

Max(mL/min)

Min(L/h)

Max(L/h)

3

0.000

21000

0.000

1272

4

0.000

37000

0.000

2261

6

0.000

84000

0.000

5100

8

0.000

150000

0.000

9050

10

0.000

235000

0.000

14137


  • Digital display of gas volume flow and mass flow measurement, flow velocity
  • 4-20mA, pulse and RS485 communication
  • Gas flow measurement without external temperature and pressure compensation
  • High accuracy: ± 1 ~2.5 %




Metal Tube Rotameter for small flow measurement

low flow meter

Metal tube rot meter is a kind of variable area (VA) flow meter; Rotarmeter is with a tapered tube, a float and scaled indicator, measured medium flow raises a float in the tapered metal tube, adding the area for passage of the fluid


Features:


  • Low flow range


Water (L/h)

Air (m3/h)

Vertical Mounting

Max Pressure los

Diameter

Float No.

Flow range

@0.1013MPa 20°C

Water

(Kpa)

Air

(Kpa)

Measuring tube 15 mm

H15.1

H15.2

H15.3

H15.4

H15.5

H15.6

H15.7

H15.8

H15.9

1.6~16

2.5~25

4.0~40

6.3~63

10~100

16~160

25~250

40~400

63~630

0.05~0.5

0.07~0.7

0.11~1.1

0.18~1.8

0.28~2.8

0.48~4.8

0.7~7

1.0~10

1.6~16

2.0

2.3

2.5

2.5

2.5

2.6

2.7

2.9

3.4

7.0

7.2

7.3

7.5

7.8

8.0

10.0

10.8

14


  • Can work for small flow measurement of gas and liquid
  • Mechanical type pointer to show instant flow, do not need external main power
  • Metal tube variable area flow meter option with transmitters to have analog outputs
  • Vertical mounting and horizontal mounting options
  • With alarm contact outputs for flow controlling processes purpose
  • Option with different material, even supply VA rotameter with PTFE lined material for corrosive liquids and gases measurement





Low Flow Liquid Turbine Flow meter
min turbine flow meter

It is only dedicated to measure clean and not corrosive liquids, cannot measure gas.

Miniature turbine flow meter is suitable to measure clean and non-corrosive liquids

Flow range

Flow range

Flow sensor size

Flow (L/min)

K factor (cm3/imp)

1.15mm

0.035~1.6

0.50

1.3mm

0.01~1.86

0.60

1.5mm

0.045~2.08

0.67

2.0mm

0.085~2.32

1.02

2.5mm

0.12~2.4

1.44

3.7mm

0.15~3

2.28


Coriolis flow meter for low flow fluids measurement

Coriolis meter can measure liquid, gas and steam; it can have mass flow, temperature and density measurement by one flow sensor. It can have small sizes low to DN1.5-DN8 size.

low flow coriolis flow meter

Features

Flow range:

DN

Flow Range

Operation Pressure

Process Connection

1.5

0~4 kg/h

0~32 Mpa

Weld Joints Φ6×1.5

3

0~40 kg/h

0~32 Mpa

Weld Joints Φ6×1.5

6

0~100 kg/h

0~25 Mpa

Weld Joints Φ10×2

8

0~200kg/h

0~20 Mpa

Weld Joints Φ10×1

High Flow Accuracy: ±0.2%~±0.1%

Medium Temperature range:-50°C~ +350°C,

Analog outputs, frequency outputs, RS485 Modbus RTU and Hart Protocol


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