Kobold DRS Series User manual

Operating Instruction
for
Turbine-wheel Flow Meter
Model: DRS

DRS
Page 2 DRS K06/0418
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 ....................................................................................5
8.Commissioning..............................................................................................9
9.Maintenance .................................................................................................9
10.Technical information ..................................................................................10
11.Order Codes ...............................................................................................12
12.Dimensions .................................................................................................13
13.EU Declaration of Conformance..................................................................15
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

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DRS K06/0418 Page 3
2.Note
Please read and take note of these operating instructions before unpacking and
putting the unit in operation and 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
procedural 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 1 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 packaging. 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 DRS
Operating Instructions
4. Regulation Use
The DRS is to be installed only in the specified applications. Any use of the DRS
sensor which exceeds the manufacturer’s specifications may invalidate the
warranty and any resulting damage is 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.

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Page 4 DRS K06/0418
5.Operating Principle
The DRS flow meter operates on the turbine wheel principle. The liquid first flows
through a laminar flow element that eliminates turbulence and routes the flow
stream into the turbine wheel. The turbine wheel then starts to rotate. This rotary
motion is sensed non-contacting by magnets embedded in the turbine wheel and
converted to a frequency signal. The frequency is proportional to the flow velocity.
Various outputs, such as a frequency divider, analogue output or compact
electronics with LED display with limit contacts are available as options. An
integrated temperature sensor for simultaneous measuring of flow rate and
temperature is also available as an additional option. The rotating vane is
sapphire-supported: this ensures a high degree of linearity and long service life.
6.Mechanical Connection
6.1.Operational conditions check-up:
Flow volume
max. operational pressure
max. operational temperature
Attention! Exceeding prescribed ranges may cause damage to ball-
bearings and considerable measurement errors may result.
6.2.Mounting
Direction of flow must match the direction of arrow (position independent).
Pressure- and tensile loading is to be avoided on the connection threads.
Inlet and outlet piping should be secured at least 50 mm away mechanically from
the connections.
Check the sealing of the connections
The use of flat sealings is to be preferred. The sealing surfaces are shown in
section 11 - “Dimensions“

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DRS K06/0418 Page 5
7.Electrical Connection
7.1.General
Attention! Ensure that the power ratings of your supply system are
in agreement with the power ratings of the flow meter.
Please ensure that the electric supply lines are not active.
Wire the connection cable/plug with the supply line according to the following
connection diagram.
We recommend a cross-sectional area of 0.25 mm² for the supply line.
Attention! A false level on plug connections may cause destruction
of unit’s electronics.
7.2.Evaluation electronics
Frequency output without Pt100
Plug connection(..F3000; ..F3200; ..F3400; ..F3900)
1
2
34
+Vs
Signal
Out
n.c.
GND
Plug connection (..F5000; ..F5200; ..F5400; ..F5900; ..K0000)
brown: + VS
blue: GND
Black: Signal
...S000 ...S00P
white: + Vs brown: + Vs
green: Signal black: Signal
brown: GND green-yellow: GND/PT100-1
yellow: PT100-2

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Page 6 DRS K06/0418
7.3.Evaluation electronics:
Frequency output and analogue output with Pt100 (DRS-..P)
Plug connection (..F300P;
..F320P, ..F340P, ..F390P,
..L303P; ..L343P)
Cable connection (..F500P;
..F520P, ..F540P, F590P)
brown: +Vs
blue: GND / Pt100
black: Signal
white: PT100 2-wire
grey: PT100 2-wire
7.4.Evaluation electronics: analogue output (..L..)
3-conductor (..L303, ..L343)
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND

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DRS K06/0418 Page 7
2-conductor (..L342)
1
2
34
S+
S-
n.c.
n.c.
+Vs
GND
2-conductor, DIN-plug
(DRS-...L442)
+Vs
GND
1
2
3
S+
S-
PE n.c.
7.5.Compact electronics:
(..C30R, ..C30M, ..C34P, ..C34N)
Please see
Operating Instruction Manual for compact electronics with frequency output

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page 8 DRS K05/1116
7.6.Evaluation electronics: Pointer display (..Z300, ..Z340)
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND
Caution! In case current output is not needed, PIN 4 (Signal OUT) is
to be permanently connected wit Ground (GND) (short circuit jumper).

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DRS K06/0418 Page 9
8.Commissioning
8.1.Frequency output
The measuring units are pre-adjusted and ready for operation after electrical
connection.
8.2.Analogue output
The measuring units are pre-adjusted and ready for operation after electrical
connection.
8.3.Pointer display (..Z300, ..Z340)
The measuring units are pre-adjusted and ready for operation after electrical
connection.
8.4.Compact electronics
Please see
Operating Instruction Manual for compact electronics with frequency output
9.Maintenance
As long as the medium to be measured is not polluted, 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 be deemed necessary, the sensor must be uninstalled and
rinsed thoroughly in clean water.
Work on electronics may only be carried out by the supplier, so that the product
guaranty remains valid.

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page 10 DRS K05/1116
10.Technical information
10.1. Sensor data
Measuring range: 2-40 L/min water
Sensor pulse output: 384 Hz at 40 L/min Metal Sensor
(DRS-...150; DRS-...250)
352 Hz at 40 L/min plastic sensor (DRS-...350)
Max. operating pressure: 200 bar (DRS-...150; DRS-...250)
16 bar (DRS- ...350)
Temperature: -20 to +80 °C (medium, standard), -20...+150 °C
(medium, -S00x), -20 to +100 °C (storage)
Measuring accuracy: ±1.5% of f.s.
±5 % of f.s. (DRS-0)
Linearity: ±0.5 % of f.s.
Repeatability: ±0.1 % of f.s.
Electrical connection: plug connector M12x1 1.5 m cable (DRS-0 only)
2 m cable (DRS-...F5 only)
Protection: IP 65 (plug connector), IP 66 (cable)
Weight (sensor and electronics)
Sensor: approx. 80 g (DRS-...350)
approx. 550 g (DRS-...150; DRS-...250)
Electronics: approx. 60 g (DRS-...K..; DRS-...F..; DRS-...L3...)
approx. 100 g (DRS-...L442)
approx. 450 g (DRS-...Z...)
approx. 650 g (DRS-...C...)
10.2. Evaluation electronics
DRS-0...K000 / DRS-0...S00x
Supply: 5...28 VDC
Output pulse: rectangular pulse signal, open collector, NPN,
max. 10 mA
DRS-...F300, DRS-...F500
Supply: 12…28 VDC
Power consumption: 10 mA
Pulse output: PNP, open collector, max. 20 mA
Option: Pt 100, 2-wire
Response time (Pt100): t90 = 100 s

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DRS K06/0418 Page 11
DRS-...F390
Supply: 24 VDC ± 20 %
Power consumption: 15 mA
Pulse output: PNP, open collector, max. 20 mA
Frequency divider: 1...1/128, factory setting
Option: Pt 100, 2-wire
Response time (Pt100): t90 = 100 s
DRS-...L...
Supply: 24 VDC ± 20%
Output: 0(4)-20 mA, 3-wire or 2-wire
Max. load: 500 
Option: Pt 100 (2-wire)
Response time (Pt100): t90 = 100 s
DRS-...C30...
Compact electronics
Display: 3-digit LED
Switching outputs: 2 semiconductor PNP or NPN, factory set
Contact operation: N/C / N/O contact frequency programmable
Setting: with 2 buttons
Supply: 24 VDC ±20%, 3-wire
Power consumption approx. 100 mA
Electrical connection: plug connector M12x1
DRS-...C34...
Compact electronics
Display: 3-digit LED
Analogue output: (0)4...20 mA adjustable, max. 500 Ω
Switching outputs: 1 semiconductor PNP or NPN, factory set
Contact operation: N/C / N/O contact frequency programmable
Setting: with 2 buttons
Supply: 24 VDC ±20%, 3-wire
Power consumption: approx. 100 mA mA
Electrical connection: plug connector M12x1
DRS-...Z...
Pointer indicator with analogue output
Housing: aluminum
Display: moving-coil instrument, 240 ° display
Power supply: 24 VDC ±20%
Output: 0-20 mA or 4-20 mA, 3-wire
Max. load: 250 
Electrical connection: plug connector M12x1

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page 12 DRS K05/1116
11.Order Codes
Order Details (example: DRS-9350 I4 L303 0)
Material
sensor housing Model Connection Evaluating electronics Option
14 = G 1/2
female thread
G4 = G 1/2 female/
male thread
G5 = G 3/4
male thread
N5 = 3/4 NPT
male thread
Frequency output
F300 = Plug connector M12x1, PNP
F320 = Plug connector M12x1, PNP, divider 1:2
F340 = Plug connector M12x1, PNP, divider 1:4
F390 = Plug connector M12x1, PNP, divider 1...1/128
F500 = 2 m PVC cable, PNP
Analogue output
L303 = Plug connector M12x1, 0 - 20 mA, 3-wire
L342 = Plug connector M12x1, 4 -20 mA, 2-wire
L343 = Plug connector M12x1, 4 - 20 mA, 3-wire
L442 = Plug connector DIN 43 650, 4 - 20 mA, 2-wire
Compact electronics1)
C30M = LED display, 2 x NPN switching output,
Plug connector M12x1
C30R = LED display, 2 x NPN switching output,
Plug connector M12x1
C34N = LED display, 4 - 20 mA, 1 NPN switching output,
Plug connector M12x1
C34P = LED display, 4 - 20 mA, 1 PNP switching output,
Plug connector M12x1
Pointer indication, 240°1)
Z300 = Pointer indication, 0 - 20 mA, Plug con. M12x1
Z340 = Pointer indication, 4 - 20 mA, Plug con. M12x1
0= without
P= Pt 1002)
Y= Special model
Brass DRS-9150
Stainless steel DRS-9250
Plastic (Noryl) DRS-9350
1) Please specify flow direction in writing. 2) Only for option F3/F5 and L3x3
in brass and st.st. version
Plug-on display
For model DRS-...L442 (with 4-20 mA output and DIN plug connector)
Description Order number
4-digit LED,
connector DIN 43650, 2-wire,
supply through analogue output
AUF-1000
as above
however with additional
open collector output
AUF-1001
Order details OEM version example: DRS-0350 I4 K0000)
Material
sensor housing
Model Connection Evaluating electronics
Brass DRS-0150
I4 = G 1/2 female thread
G4 = G 1/2 female/male thread
G5 = G 3/4 male thread
N5 = 3/4 NPT male thread
Frequency output
K0000 = 1.5 m PVC cable, NPN, OEM without CE
S000 = 1.5 m Silicone cable, NPN, OEM without CE
S00P = 1.5 m Silicone cable, NPN, PT100, OEM without CE
(Version S00x not available for DRS-0350)
Stainless steel DRS-0250
Plastic (Noryl) DRS-0350

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12.Dimensions
Connection threads: female/female; male/male and female/male with the same
outer dimensions.
35
80 SW 32
M12x1
36
50
63,4
16
D
D
Kabel-
version
DRS-...F/...L

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page 14 DRS K05/1116
OBOLD
50


44
,5
1
0
2
5
1
1
8
5
2
3
7
A
1
A
1
SW 36
SW 32 80
13,5
D
D
Cable 2 m
with plug
M 12x1
DRS-...C
D
D
DRS-...Z D = Sealing areas

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DRS K06/0418 Page 15
13.EU Declaration of Conformance
We, KOBOLD-Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Turbine-wheel Flow Meter Model: DRS
to which this declaration relates is in conformity with the standards noted below:
EN 61000-6-4:2011
Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission
standard for industrial environments
EN 61000-6-2:2011
Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for
industrial environments
EN 61010-1:2011
Safety requirements for electrical equipment for measurement, control and
laboratory use - Part 1: General requirements
EN 60529:2014
Degrees of protection provided by enclosures (IP Code)
Also the following EC guidelines are fulfilled:
2014/30/EU EMC Directive
2011/65/EU RoHS (category 9)
Hofheim, 07. Apr. 2016
H. Peters M. Wenzel
General Manager Proxy Holder