PKP DS09 User manual
Instruction Manual
DS09
Angle Seat Variable Area Flow Meter
PKP Prozessmesstechnik GmbH
Borsigstraße 24
D-65205 Wiesbaden- ordenstadt
Tel.: ++49-(0)6122-7055-0
Fax: ++49-(0)6122-7055-50
Email: [email protected]
Table of Contents
Safety Information................................................................................................................................2
Functional Description.........................................................................................................................3
Design...................................................................................................................................................4
Installation Information........................................................................................................................4
Installation............................................................................................................................................7
Initial startup.........................................................................................................................................7
Tightening torque.................................................................................................................................8
Electrical Connection...........................................................................................................................9
Contact protection measures...............................................................................................................11
Venting the valve................................................................................................................................13
Setting the switch point......................................................................................................................13
Checking / reading-off the flow..........................................................................................................14
Troubleshooting guide........................................................................................................................15
Safety Information
General Instructions
To ensure safe operation, the device should only be operated according to the specifications in the
instruction manual. The requisite Health & Safety regulations for a given application must also be
observed. This statement also applies to the use of accessories.
Every person who is commissioned with the initiation or operation of this device must have read
and understood the operating instructions and in particular the safety instructions!
The liability of the manufacturer expires in the event of damage due to improper use, non-
observance of this operating manual, use of insufficiently qualified personnel and unauthorized
modification of the device.
Proper Usage
Series DS09 angle seat variable flow meters are designed to measure and monitor continuous flow
rates of liquids and gases which do not attack the device materials. All other usage is regarded as
being improper and outside the scope of the device.
The series DS09 flow meter devices should not be deployed as the sole agents to prevent dangerous
conditions occurring in plant or machinery. Machinery and plant need to be designed in such a
manner that faulty conditions and malfunctions do not arise that could pose a safety risk for
operators.
DS09 Instruction manual 05/2018 page 2
Dangerous substances
For dangerous media such as e.g. Oxygen, Acetylene, flammable or toxic substances as well as
refrigeration systems, compressors, etc. must comply with the relevant regulations beyond the
general rules.
ualified Personnel
The DS09 devices may only be installed by trained, qualified personnel who are able to mount the
devices correctly. Qualified personnel are persons, who are familiar with assembling, installation,
placing in service and operating these devices and who are suitably trained and qualified.
Inward Monitoring
Please check directly after delivery the device for any transport damages and deficiencies.
Additional with reference to the accompanying delivery note the number of parts must be checked.
Claims for replacement or goods which relate to transport damage can only be considered valid if
the delivery company is notified without delay.
Functional Description
DS09 flow monitors operate on the principle of the variable area flowmeter. The flow monitor is
installed into a pipe system and measures the flow rate of the medium flowing through the pipe
system.
A float inside the flow monitor is moved by the flowing medium. Together with the float, the flow
indicator inside the sight glass is moved. A magnetic field is generated by the magnets integrated in
the flow indicator. The position of the float is detected by the switch contact.
In addition to electrical control through the Reed-contact (switch contact), the current flow rate can
also be read-off on the measuring scale on the sight glass.
Applications for DS09 flow monitors are, for example, cooling circuits. The device monitors the
volume flow of the cooling media to ensure sufficient cooling. If the flow through the flow monitor
drops below the threshold preset by the operator, the switch contact switches (change-over contact)
or opens (normally open contact).
DS09 Instruction manual 05/2018 page 3
Design
1 Venting screw
2 Device housing
3 Spring
4 Sight glass with measuring scale
5 Flow indicator
6 Process connection
7 Switch contact with socket or connection
cable
8 Media inlet
9 Media outlet
10 Primary flow unit
Installation Information
•Do not use the flow monitor with quick-acting valves
•Do not use the flow monitor with solenoid valves
•Do not subject the flow monitor to vibrations
•Do not subject the flow monitor to pressure surges
•Do not use the flow monitor with media containing solids or abrasives
•Use the flow monitor only with media previously approved by the manufacturer
•Do not use the flow monitor as the sole monitoring device to prevent dangerous conditions
•Do not install the flow monitor as a load bearing part within a pipeline system
•The flow monitor with sight glass must be installed in such a way as to preclude damage to
the sight glass by outside force. If necessary, install an appropriate impact protection device.
•External magnetic fields will influence the switch contact. Keep sufficient distance to
magnetic fields (e.g. electric motors).
•Piping, process connections or supports made of ferromagnetic material influence the
magnetic field of the device. Keep a space of minimum 100mm to those materials (e.g.
steel).
•Ensure that there are no foreign particles in the device
•Ensure that the device is not soiled
•Do not use any medium containing solids
DS09 Instruction manual 05/2018 page 4
Installation position/direction of flow:
The flow monitor must only be installed in one of the positions displayed above. The medium must
flow in the direction of the arrow (from a low to a high scale value).
Measuring inaccuracy due to incorrect installation!
The measuring accuracy of the flow monitor is influenced by
its position within the pipe system.
Changes in cross-section, branchoffs or bends in the pipe
system impair measuring accuracy.
– Ensure that the unimpeded flow sections are maintained
– ever reduce the pipe diameter immediately before the
device
Unimpeded flow sections
An unimpeded flow section of 10xD (rated width) must be
maintained before the device.
An unimpeded flow section of 5xD (rated width) must be
maintained after the device.
DS09 Instruction manual 05/2018 page 5
Unimpeded outlet
If the pipe system ends at an unimpeded outlet, the flow monitor must not be installed directly in
front of the opening. The device must always be completely filled with media to ensure measuring
accuracy.
DS09 Instruction manual 05/2018 page 6
Installation
1. Place the threaded end of the device onto the thread of the connecting pipe
2. Fasten the adapter union of the pipeline with a suitable spanner (1). When doing so, lock the
process connection of the device in place to prevent slip, using a suitable spanner (2).
3. Keep turning in the adapter union (1) while holding the process connection of the device
locked (2) until the connection is tight.
4. Repeat these steps at the other end of the device.
Initial startup
The following steps must be taken before initial startup and any subsequent startup (e.g. after remo-
val and installation during maintenance).
•Make sure that the plant is operating vibration-free. Vibrations could destroy the device.
•Make sure that the medium is flowing continuously. Pulse-like staggered loads could destroy
the device.
•Completely fill the pipelines. Partial filling(s) may result in malfunctions and damage to the
device.
•Vent the pipeline. If there are air bubbles in the line during the measurement, this could re-
sult in damage to the device caused by hydraulic shock. This may cause malfunctions.
•Make sure that the plant is operating without cavitation. Cavitation may result in malfuncti-
ons and damage to the device.
DS09 Instruction manual 05/2018 page 7
Tightening torque
DS09 Instruction manual 05/2018 page 8
Electrical Connection
The electrical connection of the flow monitor is via the connector plug. The switch contacts em-
ployed in these devices are potential free and do not require a power source. Switch contacts and
flow monitor have been optimally harmonized. After replacement of a switch contact, the switch
point must be readjusted.
Attention: Prior to the electrical connection of the device, it must be ensured that the supply voltage
matches that required and the supply voltage is switched off.
Switch contact with connector in compliance with EN175301-803, form C
Switch position under no-flow condition:
ormally Open ( OC) Change Over (COC)
Pin assignment plug socket (the ground-pin is not used
ormally Open ( OC) Change Over (COC)
DS09 Instruction manual 05/2018 page 9
Switch contact, plug connector M12x1
Switch position under no-flow condition:
ormally Open ( OC) Change Over (COC)
Pin assignment M12x1 plug connection
Grounding the device
When installing the device in a pipe system, ensure that the device is grounded to the pipe system to
avoid a dangerous electrical potential difference.
DS09 Instruction manual 05/2018 page 10
Table of contents
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