Dwyer HF Bedienungsanleitung PDF herunterladen

Valve

Size

1/8 NPT

1/4 to 1/2 NPT

3/4 to 1 NPT

1-1/4 to 1-1/2 NPT

2 NPT

Series HF IN-LINE FLOW MONITORS

Specifications - Installation and Operating Instructions

BULLETIN F-55

Series HF Flow Monitors combine the

simplicity of a sharp edged orifice disk with a

variable area flow monitor to provide a low cost

way to measure flow at high pressures. These

monitors are tubular, with all internal wetted parts

sealed within the body casing. Running through

the body is a tapered shaft which is centered in

the bore by pilot disks at each end. Surrounding

the shaft are a sharp-edged floating orifice disk,

a transfer magnet and return spring. The disk

and transfer magnet are held in the “no flow”

position by a biased return spring. As flow moves

through the monitor, it creates a differential

pressure at the orifice disk forcing the disk and

transfer magnet against the return spring. As

flow increases, the differential pressure at the

disk increases, forcing the disk and transfer

magnet to move along the tapered center shaft.

As flow decreases, the biased return spring

forces the disk and transfer magnet down the

center shaft, returning to the “no flow” position.

In metal casing monitors, disk and magnet

movement are not visible so a magnet follower is

located outside the body casing, magnetically

coupled to the internal transfer magnet. As flow

increases, motion of the internal magnet moves

the magnet follower outside the body casing,

under the scale.

SPECIFICATIONS

Service: Compatible gases or liquids.

Wetted Materials: Body: Aluminum, brass or

304 SS; Seals: Buna-N or Fluoroelastomer;

Magnet: PTFE coated Alnico; Other internal parts:

304 SS.

Maximum Viscosity: 500 SSU.

Temperature Limits: HFA, HFL, HFB and HFS

Models: 240°F (116° C); HFH Models: 400°F

(204°C).

Pressure Limits: HFA Models: 600 psig (41 bar);

HFL, HFB and HFH Models: 3500 psig (240 bar);

HFS Models: 6000 psig (413 bar).

Accuracy: ±4% FS over entire range; ±2.5%

over center third of the measuring range.

Repeatability: ±1% of full scale.

Shipping Weight: 1/8 to 1/2˝ female NPT

Models; 2 lb (0.9 kg); 3/4 to 1˝ female NPT

Models: 3.5 lb (1.59 kg); 1-1/2˝ female NPT

Models: 11 lb (5 kg); 2˝ female NPT Models: 13.5

lb (6.12 kg).

("A")

("C")

("B")

“A”

Reference

1.25

1.875

2.375

3.500

“B”

Wrench Flats

0.875

1.250

1.750

2.250

“C”

Reference

4.813

6.562

7.125

10.125

12.625

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, IN 46361,U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

F-55:HF Bulletin 7/24/09 9:54 AM Page 1

1 2 3 4

DWYER INSTRUMENTS, INC 1

Inhaltsverzeichnis

Seite 1 - DWYER INSTRUMENTS, INC

ValveSize1/8 NPT1/4 to 1/2 NPT3/4 to 1 NPT1-1/4 to 1-1/2 NPT2 NPTSeries HF IN-LINE FLOW MONITORSSpecifications - Installation and Operating Instructio

Seite 2

READING THE MONITORNote the red reference line running 360° around thewhite magnet follower. This line moves in directproportion to the movement of th

Seite 3

BASIC APPLICATION INFORMATIONThe flow monitor can be installed directly in the fluidline without flow straightening or special piping.They are suitabl

Seite 4

DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com P.O. BOX 373 • MICHIGAN CITY, IN 46361,U.S.A. Fax: 219/872-9057

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Dwyer HF Bedienungsanleitung

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