KOBOLD Instruments Inc • 1801 Parkway View Drive • 15205 Pittsburgh, PA • Tel: +1 412 788 2830 • E-mail: Please activate JavaScript • visit koboldusa.com

bgf-durchfluss.png: Full Metal Variable Area Flow Meter / Counter BGF

Full Metal Variable Area Flow Meter / Counter BGF

For horizontal and vertical mounting

Measuring / switching range:
10 - 100 ... 4000 - 40 000 l/h water
0.3 - 3.0 ...110 -1100 Nm³/h air
Connection: flange DN15 ... DN100, ANSI ¾ ... 4"
Material: stainless steel 1.4404, option PTFE-lining
pmax: PN40 (16) bar, on request max. PN600 bar
Temperature range: -40 ... +200°C (-40 ... +350°C on request)
Accuracy: ±2 % of full scale
Options: contacts, analogue output, totalizer, Hart®, Profibus® PA, ATEX

Datasheet

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bgf-gb-flow

331 KB

Operating Instructions

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BGF - Operating Instructions

2,4 MB

Approvals

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PTB00ATEX2048X

II 1G Ex ia IIC T6...T1 Ga
II 2G Ex ia IIC T6...T1 Gb

3,8 MB
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PTB00ATEX2049X

II 1G Ex ia IIC T6...T1 Ga
II 2 G Ex ia IIC T6...T1 Gb

3,0 MB
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PTB99ATEX2128X

II 2G Ex ia IIC T6...T1 Gb

812 KB
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PTB99ATEX2219X

II 1G Ex ia IIC T6...T1 Ga
II 2G Ex ia IIC T6...T1 Gb

1,1 MB
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ZELM03ATEX0128X

II 1D Ex iaD 20 T...°C

1,3 MB
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BVS03ATEXH/B112

Ignition Hazard Assessment

87 KB
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IECEx BVS 16.0072

Ex ia IIC T6 Gb

514 KB
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PESO P568580

Ex ia IIC T6 Gb

102 KB
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DMT 00 ATEX E 075

Transmitter ES, ES-PPA, ES-FF

2,4 MB

Description

Inside the flow tube, there is a star guided float which works towards a spring. An annular gap is produced between the coneshaped magnet system and the meter ring in case of flows other than zero. The position of the magnet system depends on the resulting force of all forces acting upon it. These forces comprise the flow force, a spring force acting opposite to the flow force,  and the buoyancy and weight force significant for the measurements in case of vertical installation.
Each position of the magnet holder corresponds to a flow value measured during  calibration, which is transferred to a scale. The BGF flowmeter consists of a meter tube with connections, a meter ring, and a conical magnet holder. By means of a magnet, the position of the magnet system is transferred to an encapsulated follow  magnet, which has been fitted to a pointer axle. The position of a second annular follow magnet fitted on the pointer axle is transferred to the scale by means of the pointer.

Other Members of the KOBOLD group

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KOBOLD Instruments Inc.

1801 Parkway View Drive
15205 Pittsburgh PA
United States of America

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