Kobold DVZ series User 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: [email protected]
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
34
Output
N/C
Output
N/O
+Vs
GND
7.4 DVZ-...F300; DVZ-...L3x3
Connection example DVZ-...L3x3
1
2
34
+Vs
Signal
Out
n.c.
GND
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND
1
2
34
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
34
5
Switch
Out 2
Switch
Out 1
+Vs
GND
GND
+Vs
Signal
Out
+Vs
GND
GND
1
2
34
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
Md
Any time
Id
or do not press
a button for 20 sec

DVZ
DVZ K04/0810 page 11
9.3 Value setting
From the main menu item (for example: switch point, "SPo"), press the ""
button to set the value. The flow chart below illustrates the universal routine for
changing individual parameters.
[From the main menu item]
1. Adjust position
2. Adjust position
3. Adjust position
Adjust decimal point
Save selected value
or
enter new value.
[To the next main menu item]
save

DVZ
page 12 DVZ K04/0810
9.4 Set-up mode
Compact electronic DVZ-...C30..
Contact 2
function N/O
N/C Save
Code entering
Value setting
Contact 1
function
N/C
Frequency Save
Hysteresis
Value setting
Switching
point 2
Value setting
Switching
point 1
Value setting
Code=
3 sec
Code entering
Value setting

DVZ
DVZ K04/0810 page 13
Compact electronic DVZ-...C34
Contact
function N/O
N/C
Frequency Save
Code entering
Window point
Hysteresis
Switching point
3 sec
Code=
End current
Start current
7sec
7sec
Value setting
Value setting
Value setting
Value setting
Value setting
Value setting

DVZ
page 14 DVZ K04/0810
9.5 Main menu items
9.5.1 Switching point
The switching point is entered in the menu item "Spo, SP1, SP2". A setting value
between 000 and 999 can be selected. This value can also include a decimal
point. The decimal point can be set at two points (e.g. 10.0 or 1.00). If the display
value exceeds the set switch point, the electronic is activated and is signalised by
a lightning LED.
If the hysteresis is equal to zero and the window point is de-activated, the
electronic switches back whenever the indicated value falls below the switching
point.
9.5.2 Hysteresis
After the setting of the switching point, the hysteresis can be entered as a
negative value in the "HYS" menu. The standard hysteresis value is zero. In
operation condition this can lead to ambiguous switching behaviour, if the reading
fluctuates around the switching point or window point. In this case, increasing the
hysteresis can put things right. The hysteresis relates to the switching point and
the window point (switching point minus hysteresis; window point plus
hysteresis).
Example: Switching point 100 l/min; Hysteresis: -2.5 l/min
The electronic switches when 100 l/min is exceeded and switches
back when the reading drops below 97.5 l/min.
9.5.3 Window point (duo-point)
As well as the switching point, it is also to define a "duo" (duo-point), the window
point. This must be higher than the switching point. By using the window point
and the switching point it is possible to monitor the measurement value in a
certain range. The switching point limits the measurement range to smaller
values and the window point to larger values.
Changing code
Value setting
Storing
7sec
4-20
mA
0-20
mA
Analog output
choosing

DVZ
DVZ K04/0810 page 15
If the window point (duo-point) is less than or equal to the switching
point, an error report (Er4) will be indicated on the display and its
value is deleted and its function is invalid (in the case that the
window point and switching point out of adjustment).
The value is set in the same way as the switching point.
The window point is needed for process, in which monitoring of a certain
temperature range is necessary.
Example: Switching point: 100 L/min; window point: 150 L/min;
hysteresis: -1 L/min
The electronic switches when 100 l/min is exceeded. If the switching value
remains between 99 L/min (100-1) and 151 L/min (150+1), the contact will also
remain in active switching condition (LED on). If it exceeds 151 l/min or is below
99 l/min the electronic switches back.
Switching behaviour
The following diagram clarifies the switching behaviour of the electronic switch.
The contact closes (contact type: no) when it drops below the switching point or
the window point. It only opens again if the window point plus hysteresis is
exceeded or if it drops below the switching point minus hysteresis. An LED
indicates the switching condition of the switching point.
Time / t
Display
bar (°C)
Hysteresis
LED on
Time / t
Display
bar (°C)
Switchpoint
Hysteresis
LED on
Hysteresis
Window point
LED on

DVZ
page 16 DVZ K04/0810
9.5.4 Contact type
The function of the transistor switching output is set in menu item "Con, Co1 or
Co2". The switching function switches from
no - N/O contact to
nc - N/C to
Fr – frequency (only Con and Co1)
and back.
N/O contact: contact closes when switching point is exceeded
N/C contact: contact opens when switching point is exceeded
Frequency: frequency output synchronised with the vane frequency
9.5.5 Current output
The current output is selected in menu items
"S-C" Start current indicated value < > 0(4) mA
"E-C" End current indicated value < > 20 mA
"SCS" Start current selection (0-20 mA or 4-20 mA).
The indicated value at which 0(4) mA flow is entered in menu item Start current.
The indicated value at which 20 mA flow is entered in menu item End current.
9.5.6 Change Code
The change code option "CCo" secures the unit against unauthorised tampering.
If the code is different from 000, the user must input the code immediately after
entering the adjustment mode.
10. Maintenance
The measurement device requires no maintenance if the measurement medium
does not cause deposits or include fibre parts, which wrap around the sensor or
the gate. In order to avoid problems, we recommend the installation of a filter,
such as the magnetic filter, type MFR.
If it is necessary to clean the sensor, the sensor can be rinsed with a suitable
liquid. Fiber parts or large particles can be carefully removed with tweezers, etc.
Ensure that the sensor is not damaged.
Work on the electronics can only be performed by the factory, or the warranty is
otherwise voided.

DVZ
DVZ K04/0810 page 17
11. Technical Information
Measurement process: Vortex principle
Mounting position: any, flow in direction of arrow
Response time: 1 s
Accuracy: ±2.5% of f.s.
Repeat accuracy: ±1% of f.s.
Inlet / outlet runs: 10xDN
Protection: IP 65
Media temperature: 0...80 °C
Ambient temperature: -10...+60 °C
Max. Pressure
Connection fixed rotatable
Standard version 10 bar 20 bar
Reinforced version 20 bar -
Pressure loss
Model Upper range value Pressure loss
DVZ-**04 4,5 L/min 420 mbar
DVZ-**07 6,5 L/min 650 mbar
DVZ-**10 10,0 L/min 780 mbar
DVZ-**16 16,0 L/min 600 mbar
DVZ-**22 22,0 L/min 450 mbar
DVZ-**32 32,0 L/min 370 mbar
DVZ-**40 40,0 L/min 450 mbar
DVZ-**50 50,0 L/min 400 mbar
DVZ-**63 63,0 L/min 380 mbar
DVZ-**80 80,0 L/min 400 mbar
DVZ-**99 100,0 L/min 350 mbar
Weight - Sensor
Measuring range Size Connection fixed Connection
strengthened
Connection
rotatable
bis 32 L/min ¼", 3/8", ½" approx. 450 g approx. 600 g approx. 800 g
bis 32 L/min ¾" approx. 600 g approx. 600 g approx. 900 g
bis 32 L/min 1" approx. 1050 g approx. 950 g approx. 950 g
40...100 L/min ¾" approx. 1050 g approx. 1300 g approx. 1350 g
40...100 L/min 1" approx. 900 g approx. 1150 g approx. 1400 g
Weight - Electronics
Model Weight
DVZ-...F3x0
DVZ-...S30x
DVZ-...Lxx3
approx. 80 g
DVZ-...C3xx approx. 300 g
DVZ-...Exxx
DVZ-...Gxxx approx. 250 g
Total weight = weight sensor + weight electronics

DVZ
page 18 DVZ K04/0810
Wetted parts
Sensor housing: PPS, fibreglass-reinforced
Sensor: PVDF
Connections: brass (from 32 L/min nickel plated
from 40 L/min blank) or
stainless steel 1.4404
Bluff body: PPS, fibreglass-reinforced or
oxide ceramic (non-wear version)
Seal: NBR, EPDM or FPM
DVZ-...S300, DVZ-…S30D
Display: duo-LED for switching condition
and when range limit is exceeded
Switching output: relay changeover, max. 1 A/30 VDC
or active 24 VDC, N/C / N/O
Switch point: measuring range beginning from 90% f.s.
in 10%-steps
can be configured by the customer using a
rotary switch
Power supply: 24 VDC ± 20%
Power consumption: 12 mA
Electrical connection: plug M12x1.5 pole
Measuring range overflow: flash of the DUO-LED (red/green)
from 105 % of f.s.
DVZ-...F300, DVZ-…F390
Impulse output: PNP, Open Collector, max. 200 mA
Frequency at f.s. 500 Hz (…F300)
50…1000 Hz (F390)
Power supply: 24 VDC ± 20%
Power consumption: 5 mA
Electrical connection: plug M12x1
Measuring range overflow: Fout approx. 2 kHz from 105 % of f.s.
DVZ-...L303; DVZ-...L343
Output: 0(4)-20 mA, 3-wire
Max. load: 500 Ω
Power supply: 24 VDC ± 20%
Electrical connection: plug M12x1
Measuring range overflow: Iout approx. 20,5 mA from 103 % of f.s.
DVZ-...L443 (usage with AUF-3000)
Output: 4-20 mA, 3-wire
Max. load: 500 Ω
Power supply: 24 VDC ± 20%
Electrical connection: plug DIN 43650
Measuring range overflow: Iout approx. 20,5 mA from 103 % of f.s.

DVZ
DVZ K04/0810 page 19
DVZ-...C3 (Compact electronics)*
Display: 3-digit LED
Analogue output: (0)4...20 mA adjustable, max. 500 Ω
(only DVZ-…C34*)
Switching output: 1 or 2 Open Collector PNP or NPN,
set at factory, max. 300 mA
Contact function: N/C, N/O, frequency, programmable
(frequency output not calibrated, frequency at
f.s. approx. 500 -600Hz)
Programming: with 2 keys
Power supply: 24 VDC ± 20%, 3-wire
Power consumption: approx. 100 mA
Electrical connection: plug M12x1
Measuring range overflow: display “OF” from 105% of f.s.
DVZ-...Exxx (Counter electronics)*
Display: LCD, 2x8 digit, illuminated
total, part and flow quantities,
units selectable
Quantity meter: 8-digit
Analogue output: (0)4...20 mA adjustable
Load: max. 500 Ω
Switching output: 2 relays, max. 30 VAC/DC / 2 A / 60 VA
Settings: via 4 buttons
Functions: reset, MIN/MAX memory,
flow monitor, monitoring for part
and total quantity, language
Power supply: 24 VDC ±20 %, 3-wire
Power consumption: approx. 150 mA
Electrical connection: cable connection or M12-plug
DVZ-...Gxxx (Dosing electronics)*
Display: LCD, 2x8 digit, illuminated,
dosing, total and flow quantity,
units selectable
Quantity meter: 8-digit
Dosage: 5-digit
Analogue output: (0)4...20 mA adjustable
Load: max. 500 Ω
Switching output: 2 relays, max. 30 VAC/DC / 2 A / 60 VA
Settings: via 4 buttons
Functions: dosing (relay S2), start, stop, reset, fine
dosing, correction amount, flow switch,
total quantity, language
Power supply: 24 VDC ±20 %, 3-wire
Power consumption: approx. 150 mA
Electrical connection: cable connection or M12-plug
*more technical details see data sheet ZED in the brochure Z2

DVZ
page 20 DVZ K04/0810
12. Order Codes
Fixed connection
Order details (Example: DVZ-1 1 04 G2 S300)
*Reinforced version only in combination with fixed connection
**Please specify flow direction in the order
Storage body/
housing
Connection
material/seal Measuring range Connection fixed Electronics
DVZ-1.. =
PPS
DVZ-2.. =
ceramic
DVZ-3..*=
PPS/strengthened
design
DVZ-4..*=
ceramic/strengthe
ned design
..1.. = brass/ NBR
..2.. = st. steel/ NBR
..4.. = brass/ EPDM
..5.. = st. steel/ EPDM
..7.. = brass/ FPM
..8.. = st. steel/ FPM
..04.. = 0.5 - 4.5 L/min
..07.. = 0.8 - 7.0 L/min
..10.. = 1.3 - 10.0 L/min
..G2.. = G 1/4
..G3.. = G 3/8
..G4.. = G 1/2
..N2.. = 1/4 NPT
..N3.. = 3/8 NPT
..N4.. = 1/2 NPT
switching output
..S300 = relay, M12-plug
..S30D =active 24 VDC, M12-plug
frequency output
..F300 =M12-plug, 500 Hz
..F390 =M12-plug,
50…1000 Hz
analogue output
..L303 =M12-plug, 0-20 mA
..L343 =M12-plug, 4-20 mA
..L443 =DIN-plug, 4-20 mA
compact electronics**
..C30R =2xOpen Coll. PNP
..C30M =2xOpen Coll. NPN
..C34P =4-20 mA,
1xOpen Coll. PNP
..C34N =4-20 mA,
1xOpen Coll. NPN
counter electronics
..E14R =LCD, 0(4)-20 mA,
2xrelay, 1 m cable
..E34R =LCD, 0(4)-20 mA,
2xrelay, M12-plug
dosing electronics
..G14R =LCD, 0(4)-20 mA,
2xrelay, 1 m cable
..G34R =LCD, 0(4)-20 mA,
2xrelay, M12-plug
..16.. = 2.0 - 16.0 L/min
..G3.. = G 3/8
..G4.. = G 1/2
..G5.. = G 3/4
..N3.. = 3/8 NPT
..N4..= 1/2 NPT
..N5.. = 3/4 NPT
..22.. = 3.2 - 22.0 L/min
..32.. = 4.0 - 32.0 L/min
..G4.. = G 1/2
..G5.. = G 3/4
..G6.. = G 1
..N4.. = 1/2 NPT
..N5.. = 3/4 NPT
..N6.. = 1 NPT
..40.. = 4,0 - 40,0 L/min
..50.. = 5,0 - 50,0 L/min
..63.. = 6,3 - 63,0 L/min
..80.. = 8,0 - 80,0 L/min
..99.. = 10,0 - 100 L/min
..G5.. = G 3/4
..G6.. = G 1
..N5.. = 3/4 NPT
..N6.. = 1 NPT