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BFS-10-N-AIR / BFS-10-O-AIR Air and Gas Flow Switches


Barksdale BFS-10-N-AIR and BFS-10-O-AIR switches monitor gaseous media in cooling systems, test equipment and related flow-protection applications. The spring-loaded variable-area mechanism allows any mounting position and an adjustable switching point.

The N-AIR version operates without optical indication; the O-AIR version includes a local optical display. Flow ranges are specified in normal litres per minute and must be selected for the process connection.


Select & Configure Model
Base Model #Medium / ServiceSwitching RangeProcess ConnectionPressure LimitSwitch ContactsConfigure Part #
 
BFS-10-N-AIRAir / gas; no optical display0.6–2.2 to 200–650 Nl/minG1/4, G1/2 or G1250–350 bar; variant dependentNO or SPDT
BFS-10-O-AIRAir / gas; optical display0.2–1.3 to 200–625 Nl/minG1/4, G1/2 or G116 bar G1/4–G1/2; 10 bar G1NO or SPDT
Measuring Range:

N-AIR: 0.6–2.2 to 200–650 Nl/min. O-AIR: 0.2–1.3 to 200–625 Nl/min; connection dependent.

Temperature Limit:

100 °C standard; 160 °C optional HT.

Switch Type:

Adjustable magnetic reed flow switch; NO or change-over contacts according to model.

Mounting Orientation:

Any mounting position; observe flow direction and installation instructions.

Pressure Limit:

N-AIR: brass 250–300 bar; SS 300–350 bar, connection dependent. O-AIR: 16 bar (G1/4,G1/2), 10 bar (G1).

Accuracy:

±10% of full scale.

Body Material:

Brass or stainless steel; see datasheet for wetted components.

Enclosure Rating:

IP65 with DIN plug; IP67 with moulded cable, where specified.


Air/gas order numbers use the 0710 series and differ from the water versions. Specify the switching range in addition to the manufacturer order number; for example, 0710-012, 60…180 Nl/min. Select the correct material, connection and contact arrangement from the datasheet.

Electrical contact ratings depend on connection size; use the selected model ratings in the datasheet. The attached instructions cover N-AIR versions; contact us for O-AIR instructions. ATEX versions are not available for this air/gas family. Confirm availability when requesting a quotation.


Mod Tronic Instruments Limited
1 Delta Park Blvd #12
Brampton, ON L6T 5G1
Phone: 905-457-6322 or 1-800-794-5883
Fax: 905-457-4716 or 1-800-830-7122
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