Kobold DRB Series Manuel utilisateur

Operating Instruction

for

Turbine-wheel Flow Meter

Model: DRB-...

DRB

Page 2 DRB K04/0318

1.Contents

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

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

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

4.Regulation Use..............................................................................................3

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

6.Mechanical Connection.................................................................................4

7.Electrical connection .....................................................................................7

8.Commissioning – Evaluation Electronics ....................................................10

9.Maintenance ...............................................................................................10

10.Technical Data ............................................................................................11

11.Order Details...............................................................................................14

12.Dimensions (mm) ........................................................................................15

13.EU Declaration of Conformance..................................................................18

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

DRB

DRB K04/0318 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 devices are only to be used, maintained and serviced by persons familiar

with these operating instructions and with the prevailing regulation applying to

safety and the prevention of accidents.

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

machines fulfil the EC-machine guide lines.

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 2 dangerous fluids

3.Instrument Inspection

These devices are checked before shipping and sent out in perfect condition.

Should 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:

Turbine-wheel Flow Meter, Model: DRB

Operating Instructions

4. Regulation Use

The “turbine-wheel flow meter, model DRB“, is to be installed only in specified

applications. Any usage which exceeds the specifications is considered to be no-

specified, and would also invalidate the warranty. 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.

DRB

Page 4 DRB K04/0318

5.Operating Principle

The KOBOLD flow meter model DRB is used for measuring and monitoring

liquids. The device works according the well-known paddle wheel principle.

The four vane paddle wheel is retained radially in a high quality sapphire bearing.

The sensor is supplied ready-to-install with pipe fittings or with weld-on sleeves.

The paddle wheel is set in motion by the flowing medium. Magnets are

embedded hermetically sealed in the ends of the blades. The magnets generate

electrical pulses in a Hall-effect sensor mounted outside the flow area. Various

electronics units can be used to display and monitor the volumetric flow.

6.Mechanical Connection

6.1.Examine operating conditions:

Flow volume

Max. operating pressure

Max. operating temperature

Ensure that they are all within the limits of the device

Attention! Over-ranging may cause bearing damage and considerable

measurement errors.

6.2.Installation

Flow in the direction of the pointing arrow (position independent)

Pressure and tensile loading should be avoided

The inlet and outlet should be secured at a distance of 50 mm mechanically

from the connection.

Check the sealing of connections/joints

DRB

DRB K04/0318 Page 5

6.3. Inlet and outlet path straight piping requirements

50 x D 5 x D

Control valve

40 x D 5 x D

3 - dimensional

2 x 90°- elbow

25 x D 5 x D

2 x 90°- elbow

20 x D 5 x D

90°- elbow or

T - pi ece

18 x D 5 x D

Extenti on

15 x D 5 x D

Reduction

DRB

Page 6 DRB K04/0318

Version with weld-on mounting adapter

Weld the mounting adapter in the piping according to the sketch given below.

Position and weld-in the mounting adapter according to the nominal diameter

suitable marking. The marking on the adapter must be in line with the outer

diameter of the pipe. Also pay attention to the later position of the rotating vane

(shaft of the vane shifted by 90° to the direction of flow).

for DN 40

for DN 80

for DN 50

Nominal Size H

DN 25 30

DN 40 44

DN 50 46

DN 80 63

Nominal diameter

dapter

0,3

DRB

DRB K04/0318 Page 7

7.Electrical connection

7.1.General

Attention! Make sure that the power supply voltage corresponds with the

voltage requirement of the flow meter.

Ensure that power supply is de-energized

Connect the power supply and the output signal to the plug-pins, as shown

below.

We recommend a cross-section of 0.25 mm² for the power supply cable.

Attention! Incorrect wiring may cause permanent damage to the sensor.

DRB

Page 8 DRB K04/0318

7.2.Output Electronics:

Frequency output (..F300; ..F320, ..F340)

+Vs

Signal

Out

n.c.

GND

7.3.Output Electronics:

Analogue output (..L303, ..L342, ..L343, ..L442)

3-wire (..L303, ..L343)

+Vs

Signal

Out

n.c.

GND

+Vs

GND

2-wire (..L342)

S+

S-

n.c.

+Vs

GND

DRB

DRB K04/0318 Page 9

2-wire, DIN-plug (..L442)

+Vs

GND

S+

S-

PE n.c.

7.4.Compact Electronics:

(..C30R, ..C30M, ..C34P, ..C34N)

see

Instruction Manual-Supplement

for Compact Electronics

7.5.Evaluation electronics: Pointer indication (..Z300, ..Z340)

+Vs

Signal

Out

n.c.

GND

+Vs

GND

Caution! If the current output is not needed, PIN 4 (signal out) shall be

permanently connected to ground (GND) (short circuit).

DRB

Page 10 DRB K04/0318

7.6.ADI electronics

see

Instruction Manual-Supplement

for ADI-electronics

8.Commissioning – Evaluation Electronics

8.1.General

The Measuring units factory are pre-set and are ready for use after electrical

connections are made.

8.2.Adjustment – Compact electronics

see

Instruction Manual-Supplement

for Compact electronics with Frequency output

8.3.Adjustment – ADI display/controller

see

Instruction Manual-Supplement

for ADI-series display/controller

9.Maintenance

The measuring unit is maintenance-free if the medium to be measured does not

cause deposition of impurities. In order to avoid problems, we recommend

installation of a filter, such as magnet filter, model MFR.

Should cleaning of the sensor becomes inevitable, after opening the sensor the

inner parts may be accessed. Note the direction that the turbine points during

removal and re-install in the same direction. Please be careful to avoid any

damage to the sensor and in particular, to the turbine blades. Repair work

regarding electronics may only be carried out by the supplier. Any access or work

on the electronics voids the warranty.

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