Aalborg Afc26S-Van5-C0-3Hd-02-Ss, Afc Thermal Mass Flow Controller

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USD 1356.00 In stock

Aalborg, AFC26S-VAN5-C0-3HD-02-SS, AFC Thermal Mass Flow Controller Stainless Steel, Viton-A Seals, 1/4" Compression, No Display, +15 VDC, 0-5 VDC / 0-5 VDC, Hydrogen H2 0-20 mL/Min, 14.7 psia Metering Pressure, 21.1 Deg C / 70 Deg F Temperature AFC mass flow controller Model AFC mass flow controllers are designed to indicate flow rates and control set flow rates of gases, incorporates an advanced straight tube sensor in conjunction with flow passage elements constructed of stainless steel

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A Wheatstone bridge design is used to monitor the temperature dependent resistance gradient on the sensor windings which is linearly proportional to the instantaneous rate of flow

AFC mass flow controller include an electromagnetic control valve that allows to be set to any desired flow rate within the range of the particular model

Both flow conduits are designed to ensure laminar flows and therefore the ratio of their flow rates is constant

Flow rates are unaffected by temperature and pressure variations within stated limitations

Principles of Operation Metered gases are divided into two laminar flow paths, one through the primary flow conduit, and the other through a capillary sensor tube

The closed loop control circuit continuously monitors the mass flow output and maintains it at the set flow rate

The controller may be used as benchtop unit or mounted by means of screws in the base

The resultant temperature differential is proportional to the change in resistance of the sensor windings

The valve is normally closed as a safety feature to ensure that gas flow is shut off in case of a power outage

Transducer power supply ports are fuse and polarity protected.

Two precision temperature sensing windings on the sensor tube are heated, and when flow takes place, gas carries heat from the upstream to the downstream windings