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Metal Tube Flow Meter BF300

Technical Data

BF300 for high flows of gas, liquid and steam

Case material
Aluminium alloy case with paint; SS316 available.
Body wetted parts
SS316; SS316 + PTFE lining with PVDF float; others on request. Indication via magnetic coupling.
Scales calibrated
L/h, m³/h, kg/h, %, etc.
SS316 float ranges
Water: 1–100,000 L/h. Air: 0.03–1,200 Nm³/h. Special ranges on request.
PVDF float ranges
Water: 4–10,000 L/h. Air: 0.1–450 Nm³/h in technical data; see the published standard scales below.
Connection types
Thread, flange, clamp and sanitary; others on request.
Connection sizes
½–5 in.
Mounting length
250 mm standard; 300 mm for connections larger than 3 in. Technical data specifies 300 mm for explosion-proof: see the dimension note below.
Temperature
−50 to +200°C standard; up to 400°C on request.
Protection class
IP66 or explosion-proof: Class I, Groups B, C, D; Class II, Groups E, F, G; NEMA 4, 7, 9, depending on housing.
Accuracy
±2% F.S.; ±1.6% F.S. option. Small ranges have ±5% F.S. accuracy; see the scale tables.
Maximum pressure
40 kg/cm² standard; up to 100 kg/cm² optional.
Options
Adjustable micro, reed or inductive alarm switch; two-wire 4–20 mA analogue output.
LCD display
Available.
HART communication
Two-wire transmitter with HART protocol, galvanic isolation; suitable for SIL 2 installations.
BF300 rectangular and round metal tube flow meters, with original patent and approval markings including Ex and HART

Dimensions — mm

Swipe across each drawing to see all dimensions.

A1 — rectangular aluminium housing, standard and cooling element dimensions
A2 aluminium / B SS316 round housing, standard and cooling element dimensions
Explosion-proof housing, standard and cooling element dimensions

Mounting length needs confirmation for explosion-proof models: the technical data states 300 mm, while the dimension drawing states 250 mm standard (300 mm for connections larger than 3 in).

Alarm / Analog Output

BF300 / GS-M (Micro Switch)

BF300 micro switch and electrical terminals

One adjustable alarm contact
Load: 5 A / 125 VAC, 5 A / 250 VAC, 2 A / 30 VDC.
Ambient temperature: −25 to +100°C.
Hysteresis: ±10% F.S. (dead band).

BF300 / GT (Analog Output)

BF300 GT two-wire analogue transmitter

Two-wire 4–20 mA analogue output.
No alarm switch available.
Power supply: 24 VDC.

The source prints an ambient temperature of +25 to +100°C for GT. Confirm the required ambient range with your enquiry.

BF300 / GS-C (Inductive Switch)

BF300 inductive switch and terminals

Adjustable inductive alarm switch.
Hysteresis: ±1% F.S. (dead band).
3.5 mm slotted sensor.

Two-wire DC to DIN 19234 (NAMUR), for use in hazardous areas.
Power supply: 8 VDC (Ri approximately 1 kΩ).
Current consumption: 3 mA / 1 mA.
Ambient temperature: −25 to +100°C.

Isolated barrier output relay
Rail mounting; control circuit EEx ia IIC.
EMC to NAMUR NE21.
Contact loading: 250 VAC 2 A SPDT / 40 VDC 2 A.

1 adjustable alarm

Setpoint within 10–100% F.S.

24 VDC: KFD2-SR2-Ex1.W
115 VAC: KFA5-SR2-Ex1.W
230 VAC: KFA6-SR2-Ex1.W

2 adjustable alarms

Setpoints require a gap of 65% F.S.

24 VDC: KFD2-SR2-Ex2.W
115 VAC: KFA5-SR2-Ex2.W
230 VAC: KFA6-SR2-Ex2.W

Inductive sensor isolated barrier: input, SPDT output and power supply

BF300 / GS-R (Reed Switch)

BF300 reed alarm switch

One or two setting points; Form A bistable, normally open.
Hysteresis: ±10% F.S. (dead band).
Switch rating: AC 125 V 0.5 A / DC 100 V 10 W / max. DC 250 V <40 mA.

1 adjustable alarm: Setpoint within 10–100% F.S.
2 adjustable alarms: Setpoints require a gap of 40% F.S.

Damping and principle

Mechanical damping — optional function

Mechanical damping — optional function

Magnetic indication principle

Magnetic indication principle

Standard Scales

A. SS316 float — SS316L available

TubeL/h
Water 20°C		Nm³/h
Air 0°C, 1.013 bar		Pressure loss
mm water		ConnectionAccuracy
BF300a1–100.03–0.3≤750½″±5% F.S.
BF300b1.8–180.06–0.6≤750½″±5% F.S.
BF30012.5–250.075–0.75≤750½″±5% F.S.
BF30024–400.13–1.3≤750½″±5% F.S.
BF30035.5–550.17–1.7≤750½″±5% F.S.
BF30048–800.2–2≤750½″±2% F.S.
BF300516–1600.5–5≤750½″±2% F.S.
BF300618–1800.6–6≤750½″±2% F.S.
BF300730–3001–10≤750½″±2% F.S.
BF300850–5001.5–1.5 *≤750½″±2% F.S.
BF300960–6001.8–18≤750½″±2% F.S.
BF301070–7002–20≤750½″±2% F.S.
BF3011100–10003–30≤750¾″±2% F.S.
BF3012120–12004–40≤7501″±2% F.S.
BF3013160–16005–50≤7001″±2% F.S.
BF3014200–20006–60≤7001″±2% F.S.
BF3015240–24007–70≤7001″±2% F.S.
BF3016280–28008.5–85≤7001″±2% F.S.
BF3017320–32009–90≤7001″±2% F.S.
BF3018350–350010–100≤7001″±2% F.S.
BF3019500–500014–140≤6501½″±2% F.S.
BF3020600–600015–150≤6501½″±2% F.S.
BF3021700–700020–200≤6501½″±2% F.S.
BF3022800–800024–240≤6501½″±2% F.S.
BF30231000–1000030–300≤6502″±2% F.S.
BF30241200–1200035–350≤6502″±2% F.S.
BF30251400–1400040–400≤6502″±2% F.S.
BF30261500–1500045–450≤10002″±2% F.S.
BF30271800–1800060–600≤8002½″±2% F.S.
BF30282000–2000075–750≤8002½″±2% F.S.
BF30292300–2300090–900≤8503″±2% F.S.
BF30302500–25000120–1200≤10003″±2% F.S.
BF30312800–28000—≤11003″±2% F.S.
BF30323000–30000—≤12003″±2% F.S.
BF30333500–35000—≤10004″±2% F.S.
BF30344000–40000—≤10004″±2% F.S.
BF30355000–50000—≤12004″±2% F.S.
BF30366000–60000—≤15004″±2% F.S.
BF303710000–100000—≤25005″±2% F.S.

B. PVDF float — SS316 + PTFE-lined wetted parts only

TubeL/h
Water 20°C		Nm³/h
Air 0°C, 1.013 bar		Pressure loss
mm water		ConnectionAccuracy
BF3001P4–400.13–1.3≤750½″±5% F.S.
BF3002P5.5–550.17–1.7≤750½″±5% F.S.
BF3003P8–800.2–2≤750½″±2% F.S. †
BF3004P16–1600.5–5≤750½″±2% F.S.
BF3005P28–2800.9–9≤750¾″±2% F.S.
BF3006P35–3501.1–11≤750¾″±2% F.S.
BF3007P40–4001.3–13≤750¾″±2% F.S.
BF3008P50–5001.5–15≤7501″±2% F.S.
BF3009P70–7002–20≤7001″±2% F.S.
BF3010P90–9002.5–25≤7001″±2% F.S.
BF3011P100–10003–30≤7001″±2% F.S.
BF3012P120–12004–40≤7001″±2% F.S.
BF3013P160–16005–50≤7001″±2% F.S.
BF3014P200–20006–60≤7001″±2% F.S.
BF3015P250–25007–70≤6501″±2% F.S.
BF3016P300–30009–90≤6501½″±2% F.S.
BF3017P350–350010–100≤6501½″±2% F.S.
BF3018P450–450012–120≤6501½″±2% F.S.
BF3019P450–450013–135≤6501½″±2% F.S.
BF3020P500–500014–140≤6501½″±2% F.S.
BF3021P650–650018–180≤6502″±2% F.S.
BF3022P700–7000—≤6502″±2% F.S.
BF3023P800–8000—≤6502″±2% F.S.
BF3024P900–9000—≤6502½″±2% F.S.
BF3025P1000–10000—≤6502½″±2% F.S.

* BF3008 air is printed as 1.5–1.5 Nm³/h. This range requires confirmation and is not offered as a standard selection.
† BF3003P accuracy is ±2% F.S. in its table row but ±5% F.S. in note 1. Confirm before ordering.
The PDF lists 2½ in scales but no 2½ in connection ordering code; request advice for those sizes. ±1.6% F.S. accuracy is available on request. Technical data are subject to change.

Build your BF300 ordering code

Select the options in the same order as the PDF. Each choice shows its ordering code.

Ordering information

Options follow PDF page 4. Choices update only where the ordering table specifies a restriction. Custom flow ranges and flange sizes are available on request. Standard scales are filtered by connection size and float material.

Service condition

Materials, calibration and pressure/temperature suitability will be reviewed with your enquiry.

Your ordering code

Choose your options above.

BF300
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