Kobold DVZ User manual

Operating Instructions
for
Compact Vortex Flow Meter
Model: DVZ

DVZ
page 2 DVZ K13/0423
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Check operating conditions: ................................................................. 5
6.2Installation ............................................................................................ 5
7.Electrical Connection .................................................................................... 6
7.1General ................................................................................................ 6
7.2DVZ-...S300 ......................................................................................... 6
7.3DVZ-...S30D ........................................................................................ 6
7.4DVZ-...F300; DVZ-...L3x3 .................................................................... 7
7.5DVZ-...L443 ......................................................................................... 7
7.6DVZ-...C30 ........................................................................................... 7
7.7DVZ-...C34 ........................................................................................... 8
7.8DVZ-...Ex4R, DVZ-...Gx4R .................................................................. 9
8.Operation .................................................................................................... 10
8.1Switch point setting DVZ-...S300, DVZ-…S30D ................................ 10
8.2Counter electronics DVZ-…Ex4R ...................................................... 10
8.3Dosing electronics DVZ-…Gx4R ....................................................... 10
9.Adjustments – Compact Electronic DVZ-...C3............................................. 11
9.1Button function ................................................................................... 11
9.2Settings .............................................................................................. 11
9.3Value setting ...................................................................................... 12
9.4Set-up mode ...................................................................................... 13
9.5Main menu items ............................................................................... 15
10.Maintenance ............................................................................................... 18
11.Technical Information .................................................................................. 18
12.Order Codes ............................................................................................... 18
13.Dimensions ................................................................................................. 18
14.Disposal ...................................................................................................... 19
15.EU Declaration of Conformity ...................................................................... 20
16.UK Declaration of Conformity ...................................................................... 21
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

DVZ
DVZ K13/0423 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.
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, 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

DVZ
page 4 DVZ K13/0423
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.
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.

DVZ
DVZ K13/0423 page 5
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!
Nominal size of
threads
Proper tightening torque
3/8” 22 to 24 Nm
1/2” 28 to 30 Nm
3/4” 28 to 30 Nm
1” 36 to 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.

DVZ
page 6 DVZ K13/0423
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.
7.2 DVZ-...S300
7.3 DVZ-...S30D
1
2
34
Output
N/C
Output
N/O
+Vs
GND
1
2
34
5
Output
N/O
Output
Common
Output
N/C
+Vs
GND

DVZ
DVZ K13/0423 page 7
7.4 DVZ-...F300; DVZ-...L3x3
Connection example DVZ-...L3x3
1
2
34
+Vs
Signal
Out
n.c.
GND
7.5 DVZ-...L443
7.6 DVZ-...C30
1
2
34
5
Switch
Out 2
Switch
Out 1
+Vs
GND
GND
+Vs
Signal
Out
+Vs
GND
GND
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND

DVZ
page 8 DVZ K13/0423
7.7 DVZ-...C34
1
2
34
5
+Vs
GND
GND
Switch out
1
0(4)-20 mA

DVZ
DVZ K13/0423 page 9
7.8 DVZ-...Ex4R, DVZ-...Gx4R
Cable connection
Wire number DVZ-...E14R
Counter electronics
DVZ-...G14R
Dosin
g
electronics
1 +24 VDC +24 VDC
2 GND GND
3 4-20 m
A
4-20 m
A
4 GND GND
5 n. c. control 2*
6 reset part quantit
y
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
page 10 DVZ K13/0423
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