Kobold DRG User manual
Operating Instruction
for
Rotating Vane Flow Meter
Model: DRG-...
DRG
Page 2 DRG K09/0323
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Regulation Use ............................................................................................. 3
4.Operating Principle ........................................................................................ 4
5.Instrument Inspection .................................................................................... 4
6.Mechanical Connection ................................................................................. 5
6.1.Operational conditions check up: ......................................................... 5
6.2.Installation ............................................................................................ 5
7.Electrical Connection .................................................................................... 6
7.1.General ................................................................................................ 6
7.2.Evaluation electronics: Frequency output (..F300; ..F320, ..F340) ...... 6
7.3.Evaluation electronics: Analogue output (..L303, ..L342, ..L343,
..L442).................................................................................................. 6
7.4.Cable outlet with M12x1 angle plug electronic options F3x and L3x .... 7
7.5.Compact electronics: (..C30R, ..C30M, ..C34P, ..C34N) .................... 8
8.Commissioning – Evaluation Electronics ...................................................... 8
8.1.General ................................................................................................ 8
8.2.Adjustment – Evaluation Electronics .................................................... 8
9.Technical Information .................................................................................... 9
10.Order Details ................................................................................................. 9
11.Maintenance ................................................................................................. 9
12.Dimensions ................................................................................................... 9
13.Disposal ...................................................................................................... 10
14.EU Declaration of Conformance ................................................................. 11
15.UK Declaration of Conformity ...................................................................... 12
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
DRG
DRG K09/0323 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.
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
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.
PED 2014/68/EU
In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the
PED 2014/68/EU no CE mark.
Table 8, Pipe, Group 1 dangerous fluids
3. Regulation Use
The Model DRG-..., rotating vane flow meter is to be installed only in applications
that are within the specified operating limits. An use which exceeds the
specifications is prohibited. Any damages resulting therefrom are not the
responsibility of the manufacturer. The user assumes all risk for such usage. The
application specifications include the installation, start-up and service
requirements specified by the manufacturer.
DRG
Page 4 DRG K09/0323
4. Operating Principle
KOBOLD rotating vane flow meters series DRG are used for measuring and
monitoring low viscosity liquids. Series DRG flow meters are working according
the well-known rotating vane principle. A magnet fitted in the vane and
hermetically sealed from the medium transfers the rotary motion of the vane to a
Hall-effect sensor mounted in the housing. The sensor converts the rotary motion
which is proportional to the flow to a frequency signal. The frequency is therefore
proportional to flowrate. A series-connected electronics unit converts the signal to
an analogue output, limit contacts or display.
5. Instrument Inspection
These devices are checked before dispatch and sent away in perfect condition.
Should the damage to a device be visible, we recommend a thorough inspection
of the delivery packing. In case of damage, please inform your parcel service/
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
Rotating Vane Flow Meter model: DRG
DRG
DRG K09/0323 Page 5
6. Mechanical Connection
6.1. Operational conditions check up:
Max. flowrate
Max. operational pressure
Max. operational temperature
Attention! In case, specified range is over-violated, bearings may get
damaged and considerable measurement errors may result.
6.2. Installation
It must be ensured that the instrument housing is continuously filled with the
flow medium, especially for flows from top to bottom. No straight lengths are
necessary at inlet and outlet connections.
Flow in the direction of arrow pointer (position independent), front side of the
unit must stand in a vertical plane.
Pressure and tensile loading should be avoided.
Inlet and outlet (piping) should be braced at a distance of 50 mm from the
connection location.
Sealing of connections should be checked.
DRG
Page 6 DRG K09/0323
7. Electrical Connection
7.1. General
Attention! Please ensure that the voltage levels of your system are
in agreement with that of the flow meter.
Make sure that the electric supply lines are de-energized.
Connect the power supply and output signal on the plug-pins as shown below.
We recommend a cross-sectional area of 0.25 mm² of power supply cable.
Attention! A wrong plug-connection can lead to destruction of
unit’s electronics.
7.2. Evaluation electronics: Frequency output (..F300; ..F320,
..F340)
1
2
34
+Vs
Signal
Out
n.c.
GND
7.3. Evaluation electronics:
Analogue output (..L303, ..L342, ..L343, ..L442)
3-wire (..L303, ..L343)
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND
DRG
DRG K09/0323 Page 7
2-wire (..L342)
1
2
34
S+
S-
n.c.
n.c.
+Vs
GND
2-wire, DIN-plug (..L442)
+Vs
GND
1
2
3
S+
S-
PE n.c.
7.4. Cable outlet with M12x1 angle plug electronic options F3x
and L3x
When using a pre-assembled M12x1 connection cable with angled plug, the
cable outlet is always aligned opposite to the flow direction.
DRG
Page 8 DRG K09/0323
7.5. Compact electronics:
(..C30R, ..C30M, ..C34P, ..C34N)
Please see
Instruction Manual-Supplement
for Compact Electronics
8. Commissioning – Evaluation Electronics
8.1. General
The measuring units are pre-adjusted and ready for use after electrical
connection.
8.2. Adjustment – Evaluation Electronics
Please see
Instruction Manual-Supplement
for Compact Electronics with frequency output
DRG
DRG K09/0323 Page 9
9. Technical Information
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
10. Order Details
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
11. Maintenance
If the medium to be measured is not contaminated, the measuring unit is
maintenance-free. In order to avoid problems, we recommend installation of a
filter, such as magnet filter, model MFR.
Should cleaning of sensor be deemed necessary, the sensor may be opened and
inner parts may be accessed. Please be attentive during dismantling so that the
sensor and in particular, the vane is not damaged. During assembly the right
placement and the mounting direction of the vane should not be overlooked.
Electronic repairs may only be carried out by the manufacturer to prevent voiding
of warranty.
12. Dimensions
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
DRG
Page 10 DRG K09/0323
13. 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:
Cd1 Hg2 Pb3 Li4
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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