Flow Switches - Barksdale

Catalogue Flow Switches

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Flow switches

for monitoring volume flow of gaseous media, with or without optical display

Features

set point continuously adjustable

rugged, low hysteresis, any mounting position,

high accuracy and functional safety

Measuring ranges

0,2...1,3 Nl/min to 200...650 Nl/min for air

Applications

Measuring and monitoring of gaseous media, e. g. in cooling systems, test beds, pumps etc.

Technical data BFS-10-N-AIR (without indication)

Measuring principle : variable aera flow meter manufacturer

Technical data BFS-10-O-AIR (with optical indication)

Measuring principle : variable aera flow meter

Materials brass version stainless steel ver.

Var. aera flow meter : brass 1.4571

Spring : 1.4571 1.4571

Fitting : brass, nickel-plated 1.4571

Display housing : alumin., anodized alumin., anodized

Glass : Duran 50 Duran 50

Materials Var. aera flow meter : Spring Fitting Housing

brass version stainless steel ver. brass 1.4571

: 1.4571 1.4571

: brass, nickel-plated 1.4571 : brass, nickel-plated 1.4571


Industrial magnets	: ferrite	ferrite
Operating pressure	brass	VA	Pressure drop
BFS-10-N G1/4	: PN 300 bar	350 bar	0,02...0,2 bar
BFS-10-N G1/2	: PN 300 bar	350 bar	0,02...0,3 bar
BFS-10-N G1	: PN 250 bar	300 bar	0,02...0,4 bar

Magnets

: ferrite

ferrite

Operating pressure brass VA Pressure drop

BFS-10-O G1/4 : PN 16 bar 350 bar 0,02...0,2 bar

BFS-10-O G1/2 : PN 16 bar 350 bar 0,02...0,3 bar

BFS-10-O G1 : PN 10 bar 300 bar 0,02...0,4 bar

Operating temperat. : 100 °C (standard), 160 °C (option HT)

Operating tempérât. : 100 °C (standard), 160 °C (option HT)

Switching ranges (air in Nl/min) for:


BFS-10-N-AIR G1/4:	BFS-10-N-AIR G1/2:	BFS-10-N-AIR G1:	BFS-10-0-AIR G1/4:	BFS-10-0-AIR G1/2:	BFS-10-0-AIR G1:
0,6...2,2	2.5...10	60...180	0,2...1,3	3.0...12	22.5...80
1,7...6,0	5.5...20	100...300	0,5...2,0	7.0...30	50...130
2,5...8,0	8.0...30	200...650	0,8...3,0	12...40	130...420
3.0...12	10...35		1,5...5,0	28...125	200...625
3.0...22	24...90		2,0...8,0	50...200
7.0...24	55...220		3.0...12	100...420
12...34	65...240		3.5...14	120...480
16...56	80...300		5.5...20
20...80	140...525		7.0...24
			10...35
-		-	10...42
Accuracy	±10% f. s.		Accuracy : ±10% f. s.

Electrical connect. : plug acc. to DIN 43650

Contact rating BFS-10-N-A1R G1/4 : 200 V / 1 A / 20 VA

200 V / 1 A / 20 VA BFS-10-N-AIR G1/2 : 230 V / 3 A / 60 VA

250 V / 1,5 A / 50 VA BFS-10-N-AIR G1 : 250 V / 3 A / 100 VA

Contact rating

BFS-10-O-AIR G1/4 : 200 V / 1 A / 20 VA (NOJ

200 V / 1 A / 20 VA (SPOT)

BFS-10-O-AIR G1/2 : 230 V / 3 A / 60 VA (NOJ

250 V / 1,5 A / 50 VA (SPOT)

BFS-10-O-AIR G1 : 250 V / 3 A / 100 VA (NOJ

250 V / 1,5 A / 50 VA (SPOT)

EEx-m II T6 vers. : 250 V / 2 A / 60 VA (NOJ G1 only

250 V / 1 A / 30 VA (SPOT) G1 only

Exll 1GD

EEx ia II B T6 vers. : 45 V / 1 A / (NO / SPDT) G1 only

(NO) (SPOT) (NO) (SPOT) (NO) (SPOT)

(NO) G1/2, G1 only (SPOT) G1/2, G1

250 V / 1,5 A / 50 VA

EEx-m II T6 vers.

250 V / 2 A / 60 VA

250 V / 1 A / 30 VA

Exil 1GD

EEx ia II B T6 vers. : 45 V / 1 A / (NO / SPDT) G1/2, G1 only

Protection class

: IP65 (plug acc. to DIN 43650) IP67 (with moulded cable, EEx-models only)

Protection class

: IP65 (plug acc. to DIN 43650) IP67 (with moulded cable, EEx-models only)