Kobold DAH User manual

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.: [phone]
Fax: [phone]
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)
DN
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
16
100
0.3
DAH-1101H..
DAH-1201H..
R08
N08
⅜“
0.6 – 8
0.25
16
100
0.28
DAH-1102H..
DAH-1202H..
R10
N10
½“
1 – 12
0.25
16
100
0.6
DAH-1103H..
DAH-1203H..
R15
N15
¾“
1 – 25
0.25
16
100
0.65
DAH-1104H..
DAH-1204H..
R20
N20
1“
1.6 – 40
0.25
16
100
0.7
DAH-1105H..
DAH-1205H..
R25
N25
1 ¼“
8 – 80
0.25
16
100
1.5
DAH-1106H..
DAH-1206H..
R32
N32
1 ½“
8 - 100
0.25
16
100
1.6
DAH-1107H..
DAH-1207H..
R40
N40
Flow indicator without rotor
Order details (Example: DAH-2201H R08)
DN QN
∆p at
QN
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
16
100*/180**
0.3
DAH-2101H..
DAH-2201H..
R08
N08
⅜“
11.1
0.2
16
100*/180**
0.28
DAH-2102H..
DAH-2202H..
R10
N10
½“
31.5
0.2
16
100*/180**
0.57
DAH-2103H..
DAH-2203H..
R15
N15
¾“
38.0
0.2
16
100*/180**
0.62
DAH-2104H..
DAH-2204H..
R20
N20
1“
36.5
0.2
16
100*/180**
0.65
DAH-2105H..
DAH-2205H..
R25
N25
1 ¼“
125
0.2
16
100*/180**
1.5
DAH-2106H..
DAH-2206H..
R32
N32
1 ½“
125
0.2
16
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
DN
Female
thread
G
Female
Thread
NPT
Thread
length
B
DIN 3852
Total
length L Spanner size SW
DN
mm
G NPT
B
mm
L
mm
SW
mm
DAH-...01H
8
¼
¼“
12
71
36
DAH-...02H
10
3/8
3/8“
12
71
36
DAH-...03H
15
½
½“
14
86
46
DAH-...04H
20
¾
¾“
16
94
46
DAH-...05H
25
1
1“
18
104
46
DAH-...06H
32
1 1/4
1 ¼“
20
120
65
DAH-...07H
40
1 1/2
1 ½“
22
130
65

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

DAH
DAH K05/0722 page 11
12.EU Declaration of Conformance
We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Rotor Flow Indicator for Fluids Model: DAH-...
to which this declaration relates is in conformity with the standards noted below:
EN IEC 63000:2018 Technical documentation for the assessment of electrical
and electronic products with respect to the restriction of hazardous substances
Also, the following EC guidelines are fulfilled:
2011/65/EURoHS (category 9)
2015/863/EU Delegated Directive (RoHS III)
Hofheim, 24 March 2022
H. Volz M. Wenzel
General Manager Proxy Holder