Kobold DFT User manual

Operating Instructions
for
Rotating Vane Flow Meter
Model: DFT

DFT
page 2 DFT K06/0923
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 4
5.Operating Principle ........................................................................................ 4
6.Mechanical Connection ................................................................................. 5
7.Electrical Connection .................................................................................... 6
7.1General ................................................................................................ 6
7.2Evaluating Electronics (DFT-..0000, ..F400; ..F490, ..L403, ..L443) .... 6
7.3Evaluating Electronics DFT-....L442 .................................................... 6
7.4MA-Electronics (DFT-...M..) ................................................................. 7
7.5WM-Electronics (DFT-...W..) ................................................................ 7
7.6DFT-K/E/G (only with cable connection) .............................................. 8
8.Operation ...................................................................................................... 9
8.1MA Electronic (DFT-...M..) ................................................................... 9
8.2WM Electronic (DFT-...W..) ................................................................ 10
8.3K/E/G-Electronic ................................................................................ 11
9.Commissioning............................................................................................ 12
10.Technical Information .................................................................................. 12
11.Order Codes ............................................................................................... 12
12.Dimensions ................................................................................................. 12
13.Disposal ...................................................................................................... 13
14.EU Declaration of Conformance ................................................................. 14
15.UK Declaration of Conformity ...................................................................... 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

DFT
DFT K06/0923 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.
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:
 Rotating Vane Flow Meter model: DFT

DFT
page 4 DFT K06/0923
4. Regulation Use
Any use of the Rotating Vane Flow Meter, model: DFT, 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 established vane technology has proven itself a million times world wide for
measuring and monitoring the flow of different media through piping. KOBOLD
flow meters/monitors work with this proven principle and offer many benefits.
The heart of the new KOBOLD vane is an embedded ring magnet; it is
hermetically sealed from the flow medium. It transfers, in a non-contacting
manner, the rotary motion of the vane to a Hall sensor attached to the case (in
order to save space). This converts the rotary motion to a frequency signal that is
proportional to the flow rate. The downstream KOBOLD evaluating electronics
can output this signal to a display, convert it to (0(4)-20 mA, 0-10 V) analogue
signal, or count it. It may also be used to switch up to two limit contacts. The
ready and control states of the limit value relay are indicated by LEDs.
The modular design of KOBOLD flow monitors and measuring instruments is a
system that can be universally applied; it is reasonably priced; and requires
minimum space when in service. Very precise measurement results can be
achieved under tough operating conditions with the KOBOLD electronics. The
system is assembled with the electronics and delivered ready for service. The
electronics are adjusted and tuned for use with the sensor. When retrofitted for
other measuring ranges, the system may be readjusted with a similar device at
any time.

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DFT K06/0923 page 5
6. Mechanical Connection
Before installation
 Please ascertain whether the actual flow throughput matches the flow range of
the instrument. The flow range may be obtained from the label.
Warning! If the measuring range is exceeded by more than 20%,
bearing damage may occur.
 Remove all packing materials and transport retainers and ensure that no such
materials remain in the device.
 Make sure that the maximum operating pressure and temperature of the
device are not exceeded. (see section Fehler! Verweisquelle konnte nicht
gefunden werden. Fehler! Verweisquelle konnte nicht gefunden werden.)
 Mount the flow indication tension-free into the pipe.
 Protect the measuring tube from external damage.
 Avoid pressure surges in the measuring tube, such as those arising from fast
start up/shut off of flow or pulsating flow.
 The contact-version units may not be installed at a location within an inductive
field.
 If possible, it should be checked after mechanical installation, to see if the
connections between union fittings and pipes are properly sealed

DFT
page 6 DFT K06/0923
7. Electrical Connection
7.1 General
Caution! 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-energized.
 Connect the power supply and the evaluation oft the output signal to the pins
of the plug described below.
Warning! Incorrect wiring of the connections in the coupling plug
can lead to the electronics being destroyed.
7.2 Evaluating Electronics (DFT-..0000, ..F400; ..F490, ..L403,
..L443)
7.3 Evaluating Electronics DFT-....L442
1
2
3
S+
S-
PE n.c.
1
2
3
PE
+Vs
Signal
Out
GND

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DFT K06/0923 page 7
7.4 MA-Electronics (DFT-...M..)
Cable connection
Wire no. 1 = power supply (-)~
Wire no. 2 = power supply (+)~
Wire no. 3 = anlaogue output (+)
7.5 WM-Electronics (DFT-...W..)
off state or in alarm condition
Cable connection
Wire no: 1= power supply (-)
Wire no. 2= power supply (+)
Wire no. 3
Wire no. 4
Wire no. 5

DFT
page 8 DFT K06/0923
7.6 DFT-K/E/G
(only with cable connection)
Wire
number DFT-K DFT-E DFT-G
1 +24 VDC +24 VDC +24 VDC
2 GND GND GND
3 4-20 mA 4-20 mA 4-20 mA
4 GND GND GND
5 d.c. *) d.c. *) Ctrl 1 *)
6 d.c. *) Reset TM *) Ctrl 2 *)
7 relay S1 N/O relay S1 N/O relay S1 N/O
8 relay S1 COM relay S1 COM relay S1 COM
9 relay S2 N/O relay S2 N/O relay S2 N/O
10 relay S2 COM relay S2 COM relay S2 COM

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DFT K06/0923 page 9
8. Operation
8.1 MA Electronic (DFT-...M..)
The device is delivered ready for use. The electronics have been calibrated and
fine tuned to the sensor. The calibrating screws (0(4)-20 mA) are behind an
adhesive film and must not be adjusted by the customer. Adjustment by the
customer means that a re-calibration is necessary (and this is chargeable).
Unauthorised opening cancels the guarantee.
As soon as the external power supply to the device is switched on, a green light
emitting diode indicates that it is ready for use.
20 mA
ON
0(4) mA
Remote
Pickup
green LED
(ready for operation)
Do not adjust

DFT
page 10 DFT K06/0923
8.2 WM Electronic (DFT-...W..)
The device is delivered ready for use. The electronics have been calibrated and
fine tuned to the sensor. The calibrating screws ("Zero" and "Range"), next to the
scale button, must not be adjusted by the customer. Adjustment by the customer
means that a re-calibration is necessary (and this is chargeable). Unauthorised
opening cancels the guarantee.
As soon as the external power supply to the device is switched on, a green light
emitting diode indicates that it is ready for use. The red "Alarm" Light emitting
diode flashes.
Attention! When the red light emitting diode is flashing the limit
value relay is in alarm condition (see connection diagram).
The DF-WM has a relay output for monitoring the flow. The condition of the relay
is indicated with a flashing red light emitting diode. The contact is in the form of a
minimum contact, i.e. if the reading drops below the set value the limit value relay
is in alarm condition (flashing red light emitting diode).
Attention! The limit value relay also goes into alarm condition in the
event of a line break or power outage.
Ty p :D FT- WM
Green LED
Red LED
Do not adjust
Range
Reference line
Value setter
Key