Kobold DVZ series Operating Instructions Manual

Operating Instructions

for

Compact Vortex Flow Meter

Model: DVZ

DVZ

page 2 DVZ K04/0810

1. Contents

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

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

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

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

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

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

6.1 Check operating conditions: ................................................................. 4

6.2 Installation ............................................................................................ 4

7. Electrical Connection .................................................................................... 5

7.1 General ................................................................................................ 5

7.2 DVZ-...S300 ......................................................................................... 6

7.3 DVZ-...S30D ........................................................................................ 6

7.4 DVZ-...F300; DVZ-...L3x3 .................................................................... 6

7.5 DVZ-...L443 ......................................................................................... 7

7.6 DVZ-...C30 ........................................................................................... 7

7.7 DVZ-...C34 ........................................................................................... 7

7.8 DVZ-...Ex4R, DVZ-...Gx4R .................................................................. 8

8. Operation ...................................................................................................... 9

8.1 Switch point setting DVZ-...S300, DVZ-…S30D .................................. 9

8.2 Counter electronics DVZ-…Ex4R ........................................................ 9

8.3 Dosing electronics DVZ-…Gx4R ......................................................... 9

9. Adjustments – Compact Electronic DVZ-...C3.. .......................................... 10

9.1 Button function ................................................................................... 10

9.2 Settings .............................................................................................. 10

9.3 Value setting ...................................................................................... 11

9.4 Set-up mode ...................................................................................... 12

9.5 Main menu items ............................................................................... 14

10. Maintenance ............................................................................................... 16

11. Technical Information .................................................................................. 17

12. Order Codes ............................................................................................... 20

13. Dimensions ................................................................................................. 22

13.1 Dimensions - Sensor.......................................................................... 22

13.2 Dimensions - Electronics ................................................................... 28

14. Declaration of Conformance ....................................................................... 31

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: [phone]

Fax: [phone]

E-Mail: [e-mail]

Internet: www.kobold.com

DVZ

DVZ K04/0810 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 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 EWG-machine guidelines.

as per PED 97/23/EG

In acc. with Article 3 Paragraph (3), "Sound Engineering Practice", of the
PED 97/23/EC no CE mark.
Diagram 8, Pipelines, 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:

• Compact Vortex Flow Meter model: DVZ

• Operating Instructions

4. Regulation Use

Any use of the Compact Vortex flow meter, model: DVZ, which exceeds the
manufacturer’s specifications, may invalidate its warranty. Therefore, any
resulting damage is not the responsibility of the manufacturer. The user assumes
all risk for such usage.

DVZ

page 4 DVZ K04/0810

5. Operating Principle

The compact KOBOLD Vortex flow meter, model DVZ, is used for measuring and
monitoring smaller and medium-sized flow of low viscosity, water-like fluids in
pipes.
The device works using the vortex process, making it virtually maintenance-free.
This involves the installation of a sharp-edged object (the vortex generator) in the
flow duct. A vortex is created behind the object whose frequency is proportional
to the flow velocity of the fluid.
The flow volume can be determined with a very great degree of accuracy by
measuring the vortex frequency. This achieves a very high linearity across the
whole measuring range.
The device can be fitted with switching, frequency or analogue outputs. There is
also an optional compact electronics package that includes a digital display, and
both a switching and analogue output.

6. Mechanical Connection

6.1 Check operating conditions:

• Flow rate

• max. operating pressure

• max. operating temperature

6.2 Installation

• Remove all packing materials and transport retainers and ensure that no such
materials remain in the device.

• Install with flow in direction of arrow
(universal mounting)

• Avoid pressure and radial tension

• Fasten the pipe at up stream and down

stream at a distance of 50 mm from the
connections

Attention! Retransfer the unit on
the metal bolting (not on the
plastic housing!) Mount switches
using the proper tightening
torque according the following
table!

DVZ

DVZ K04/0810 page 5

Nominal size of

threads

Proper tightening torque

3/8” 22 bis 24 Nm
1/2” 28 bis 30 Nm
3/4” 28 bis 30 Nm

1” 36 bis 38 Nm

Note! The switch may be damaged if it is tightened above the
tightening torque range. Also, if it is tightened below the tightening
torque range, the connecting thread section may loosen.

• Ensure inlet section of 10xDN and outlet section of 10xDN

• Avoid valves or large reduction on the inlet section (this increases the

inaccuracy of measurements)

• Check the seals of the connections

Attention! When used with an open output side, there is a danger of
cavitation.

7. Electrical Connection

7.1 General

Attention! Make sure that the voltage values of your system
correspond with the voltage values of the measuring unit.

• Make sure that the supply wires are de-energised.

• Connect the supply voltage and the output signal to the plug PIN’s as stated

below.

• We recommend the use of wires with cross sectional area of min. 0,25 mm².

DVZ

page 6 DVZ K04/0810

7.2 DVZ-...S300

7.3 DVZ-...S30D

1

2

3

4

Output
N/C

Output

N/O

+Vs

GND

7.4 DVZ-...F300; DVZ-...L3x3

Connection example DVZ-...L3x3

1

2

3

4

+Vs

Signal
Out

n.c.

GND

1

2

3

4

+Vs

Signal
Out

n.c.

GND

+Vs

GND

1

2

3

4

5

Output
N/O

Output

Common

Output

N/C

+Vs

GND

DVZ

DVZ K04/0810 page 7

7.5 DVZ-...L443

7.6 DVZ-...C30

7.7 DVZ-...C34

1

2

3

4

5

Switch
Out 2

Switch

Out 1

+Vs

GND

GND

+Vs

Signal
Out

+Vs

GND

GND

1

2

3

4

5

+Vs

GND

GND

Switch out

1

0(4)-20 mA

DVZ

page 8 DVZ K04/0810

7.8 DVZ-...Ex4R, DVZ-...Gx4R

Cable connection

Wire number

DVZ-...E14R
Counter electronics

DVZ-...G14R
Dosing electronics

1 +24 VDC +24 VDC
2 GND GND
3 4-20 mA 4-20 mA
4 GND GND
5 n. c. control 2*
6 reset part quantity control 1*
7 relay S1

normally open

relay S1
normally open

8
9 relay S2

normally open

relay S2
normally open

10
*Start-dosing: Control 1 connect with GND
Stop-dosing: Control 2 connect with GND
Reset-dosing: Control 1 and Control 2 at the same time with GND

Do not connect any external voltage to the control units!

Plug connection

-E34 R

+ Vs

Reset TM

0 (4) - 20 mA

GND

1

30 V / 2 A

AC/DC

34

5

1

3

4

5

6

S 2

8

d.c. *)

Output

d.c.*) Don't connect!

DVZ

DVZ K04/0810 page 9

8. Operation

The units are preset and after electrical connection ready for operation.

8.1 Switch point setting DVZ-...S300, DVZ-…S30D

Switch setting Switch point

0 switch function deactivated
1 start of measuring range
2 20% of f.s.
3 30% of f.s.
4 40% of f.s.
5 50% of f.s.
6 60% of f.s.
7 70% of f.s.
8 80% of f.s.
9 90% of f.s.

Flow above switch point: DUO-LED green
Flow below switch point: DUO-LED red
Measuring range overflow: DUO-LED orange flashing

8.2 Counter electronics DVZ-…Ex4R

Operating please see Operating Instructions ZED-Z

8.3 Dosing electronics DVZ-…Gx4R

Operating please see Operating Instructions ZED-D

DVZ

page 10 DVZ K04/0810

9. Adjustments – Compact Electronic DVZ-...C3..

Connect the compact electronic according to previous connection diagram. After
power on, the measuring range (end current) will be shown for 3 seconds.

9.1 Button function

In the normal mode (measuring mode)

In the set-up mode

9.2 Settings

The following values can be changed at the temperature transmitter:

Scale range Factory setting

Switch point (SPo, SP1, SP2)

0...999 0,00

Hysteresis (HYS)

-199...0 -0,00

Window point (duo point) (duo)

Switch point ...999 --- (inactive)
contact-type (Con, Co1, Co2) N/O, N/C or Frequency (Fr)** N/O
Start current (S-C)*

000...999 000

End current (E-C)*

000...999 f.s.

Start current selection (SCS)

0-- (0 mA), 4-- (4 mA) 4 mA
Change Code (CCo)

000...999 000

* Start- and end value of flow relating to 0/4-20 mA.
** not calibrated, frequency at f.s. approx. 500 -600Hz

: Press 3 sec. Setup mode

: Switch point/Window point

: Next Step

: Change Value

3 sec

Standard mode

Any time

or do not press

a button for 20 sec