Kobold DAH Manuale utente

Operating Instructions

for

Rotor Flow Indicator for Fluids

Model: DAH

DAH

page 2 DAH K05/0722

1. Contents

1. Contents........................................................................................................2

2. Note ..............................................................................................................3

3. Instrument Inspection....................................................................................3

4. Regulation Use .............................................................................................4

5. Operating Principle........................................................................................4

6. Mechanical Connection.................................................................................5

6.1 Before Mounting ..................................................................................5

6.2 Installation............................................................................................5

7. Maintenance .................................................................................................6

7.1 General................................................................................................6

7.2 Replacing the measuring glass............................................................6

8. Technical Information....................................................................................7

9. Order Codes .................................................................................................8

10. Dimensions ...................................................................................................9

11. Disposal......................................................................................................10

12. EU Declaration of Conformance .................................................................11

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: +49(0)6192-2990

Fax: +49(0)6192-23398

E-Mail: [email protected]

Internet: www.kobold.com

DAH

DAH K05/0722 page 3

2. Note

Please read these operating instructions before unpacking and putting the unit

into operation. Follow the instructions precisely as described herein.

The instruction manuals on our website www.kobold.com are always for currently

manufactured version of our products. Due to technical changes, the instruction

manuals available online may not always correspond to the product version you

have purchased. If you need an instruction manual that corresponds to the

purchased product version, you can request it from us free of charge by email

([email protected]) in PDF format, specifying the relevant invoice number and

serial number. If you wish, the operating instructions can also be sent to you by

post in paper form against an applicable postage fee.

The devices are only to be used, maintained and serviced by persons familiar

with these operating instructions and in accordance with local regulations

applying to Health & Safety and prevention of accidents.

When used in machines, the measuring unit should be used only when the

machines fulfil the EC-machine guidelines.

as per PED 2014/68/EU

In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the

PED 2014/68/EU no CE mark.

Diagram 8, Pipe, Group 1 dangerous fluids

3. Instrument Inspection

Instruments are inspected before shipping and sent out in perfect condition.

Should damage to a device be visible, we recommend a thorough inspection of

the delivery packaging. In case of damage, please inform your parcel service /

forwarding agent immediately, since they are responsible for damages during

transit.

Scope of delivery:

The standard delivery includes:

•Rotor Flow Indicator model: DAH

DAH

page 4 DAH K05/0722

4. Regulation Use

Any use of the Rotor Flow Indicator DAH, which exceeds the manufacturers

specification may invalidate its warranty. Therefore, any resulting damage is not

the responsibility of the manufacturer. The user assumes all risk for such usage.

5. Operating Principle

The Kobold Rotor Flow Indicators DAH can be installed in pipe work for fluids.

These instruments have female thread on both sides and are available in brass or

stainless steel.

DAH

DAH K05/0722 page 5

6. Mechanical Connection

6.1 Before Mounting

Be sure the maximum allowable working pressures or temperatures specified for

the instrument are not exceeded. (see 9 Order Codes)

6.2 Installation

Install the Rotor Flow Indicator DAH in the direction of flow (as per stamped

arrow)

Attention: Suddenly opening the inflow may cause pressure peaks

exceeding the working pressure of the instrument; this may result in

water hammer, causing the instrument glass to break.

Attention: Remove any coarse foreign material before installing the

instrument in the pipe.

To install the indicator, always apply the open-ended spanner to the hexagon

flats on the side to which the connecting pipe is to be screwed on.

Attention: Applying the spanner on the opposite hexagon may cause

the internal support bars to be sheared off, or the connection nut to

be twisted.

During installation, protect the inspection glass against external damage

(Attention: hard glass)!

Attention: Be sure to avoid deforming the indicator by improper

fastening during installation.

DAH

page 6 DAH K05/0722

7. Maintenance

7.1 General

If the measuring medium is clean and uncontaminated, you do not have to

maintain the Flow Indicator DAH.

If a cleaning is required, the flow indicator must be dismantled. Then take an

adequate cloth and a standard glass cleaning agent and clean the inspection

glass carefully.

7.2 Replacing the measuring glass

Attention! The upper and lower sections of the DAH Flow Indicator

are attached with screw sealing lacquer. Be sure to remove the

upper section from the lower section while warm only.

•Fix the lower hexagon of the Flow Indicator ("PN16" marking).

•Heat the upper section with a hot-air dryer (specifically in the area of the

connecting bars) until the upper section can be removed using an appropriate

open-jawed spanner without applying much force.

•Remove the broken glass and clean the connecting threads of the upper and

lower sections using a wire brush.

•Replace the O-rings and the wiper rubbers, and slip the new, moistened

measuring glass onto the lower section.

•Apply some releasable screw sealing lacquer (such as Weicon no. 302-42)

onto the connecting threads, and carefully screw the upper section onto the

lower section.

•Having tightened the said components, align the spanner surfaces in parallel.

DAH

DAH K05/0722 page 7

8. Technical Information

Materials

Housing: Brass nickel plated (DAH-x1..)

St. st. 1.4305 (DAH-x2..)

Inlet: Brass nickel plated (DAH-x1..)

St. st. 1.4305 (DAH-x2..)

Sight glass: Duran

O-rings: NBR (DAH-x1..)

FPM (DAH-x2..)

Rotor: POM (DAH-x1..)

Hostaflon (DAH-x2..)

Rotor axle: St. st. 1.4305

DAH

page 8 DAH K05/0722

9. Order Codes

Flow indicator with rotor

Order details (Example: DAH-1101H R08)

Indication

range

∆p at

Qmax

pmax tmax Weight Model

Connection

thread

L/min

water

bar PN °C Kg Brass w/rotor St.st. w/rotor G NPT

¼“

0.4 – 4

0.25

100

0.3

DAH-1101H..

DAH-1201H..

R08

N08

⅜“

0.6 – 8

0.25

100

0.28

DAH-1102H..

DAH-1202H..

R10

N10

½“

1 – 12

0.25

100

0.6

DAH-1103H..

DAH-1203H..

R15

N15

¾“

1 – 25

0.25

100

0.65

DAH-1104H..

DAH-1204H..

R20

N20

1“

1.6 – 40

0.25

100

0.7

DAH-1105H..

DAH-1205H..

R25

N25

1 ¼“

8 – 80

0.25

100

1.5

DAH-1106H..

DAH-1206H..

R32

N32

1 ½“

8 - 100

0.25

100

1.6

DAH-1107H..

DAH-1207H..

R40

N40

Flow indicator without rotor

Order details (Example: DAH-2201H R08)

DN QN

∆p at

pmax tmax Weight Model

Connection

thread

L/min

bar PN °C Kg

Nickel pl.

brass without

rotor

St.st. without

rotor G NPT

¼“

8.3

0.2

100*/180**

0.3

DAH-2101H..

DAH-2201H..

R08

N08

⅜“

11.1

0.2

100*/180**

0.28

DAH-2102H..

DAH-2202H..

R10

N10

½“

31.5

0.2

100*/180**

0.57

DAH-2103H..

DAH-2203H..

R15

N15

¾“

38.0

0.2

100*/180**

0.62

DAH-2104H..

DAH-2204H..

R20

N20

1“

36.5

0.2

100*/180**

0.65

DAH-2105H..

DAH-2205H..

R25

N25

1 ¼“

125

0.2

100*/180**

1.5

DAH-2106H..

DAH-2206H..

R32

N32

1 ½“

125

0.2

100*/180**

1.6

DAH-2107H..

DAH-2207H..

R40

N40

* DAH-21 tmax 100 °C

* DAH-22 tmax 180 °C

DAH

DAH K05/0722 page 9

10.Dimensions

Standard

Size

Female

thread

Female

Thread

NPT

Thread

length

DIN 3852

Total

length L Spanner

size SW

G NPT

DAH-...01H

¼“

DAH-...02H

3/8

3/8“

DAH-...03H

½“

DAH-...04H

¾“

DAH-...05H

1“

104

DAH-...06H

1 1/4

1 ¼“

120

DAH-...07H

1 1/2

1 ½“

130

DAH

page 10 DAH K05/0722

11.Disposal

Note!

•Avoid environmental damage caused by media-contaminated parts

•Dispose of the device and packaging in an environmentally friendly

manner

•Comply with applicable national and international disposal regulations and

environmental regulations.

Batteries

Batteries containing pollutants are marked with a sign consisting of a crossed-out

garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that

is decisive for the classification as containing pollutants:

Cd1Hg2Pb3Li4

1. „Cd" stands for cadmium

2. „Hg" stands for mercury

3. „Pb" stands for lead

4. „Li" stands for lithium

Electrical and electronic equipment

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