HANSA-FLEX HK S TKV Manual de usuario
USER MANUAL
HK S TKV Analogue Power Meter
Stainless steel design
Pressures up to 350 bar
Volume flow up to 190 l/min
Temperature display up to 120°
Internal overpressure protection
an be used with all mineral oils
Power supply not required
ompact design
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 1
TABLE OF CONTENTS
INTRODU TION 2
UNPA KING AND HE KING THE PRODU T 3
FUN TIONAL PRIN IPLE 4
INSTALLATION 5
Important information 5
Installing the volume flow meter 7
Installing the power meter 9
OPERATION 11
Information about the power meter 11
ONDU TING THE POWER MEASUREMENT 12
General information 12
Standard test condition 12
Pump test 13
Test sequence 13
Pressure relief valve test 14
Test sequence 15
MAINTENAN E 16
Pressure release 16
Dismantling and cleaning the volume flow meter 16
Removing the dust protection casing 17
Reconnecting the magnetic coupling 18
Maintaining the pressure loading unit 18
Loading valve 18
Volume flow meter 18
Replacing the safety disc 18
TE HNI AL DATA 20
Temperature range 20
Nominal pressure (safety factor 3:1) 20
Drop in pressure 20
Accuracy 21
Repeatability 21
Thread 21
Pressure display 21
Temperature display 21
Loading valve 21
Medium 21
DIMENSIONS 22
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 2
INTRODUCTION
This volume flow meter is a robust industrial-grade inline gear flow meter that is available in an
aluminium, brass or stainless steel design for the purpose of monitoring many different fluids.
Available in seven connection sizes from 1/4... 3 inches for flow ranges from (0.02...0.20 gal/min)
0.1...0.75 l/min to (20...300 gal/min) 100...1100 l/min. The devices are calibrated to a specific
weight of 0.876 for oil or other oil-based fluids, 1.0 for water or other water-based fluids or 1.18
for phosphate ester fluids.
The volume flow meter is equipped with a 360° rotatable protective case/scale that allows it to
be installed in any position without needing to consider the scale direction. As soon as the
volume flow meter is permanently installed, the protective case/scale can be rotated 360° to
make it easier to read.
In addition, the unique spring-loaded design of this volume flow meter reduces its sensitivity to
viscosity and allows it to be installed in any position, including inverted, without losing any
precision. An optional inverted scale is available for such applications.
The standard volume flow meter only works in one direction. If required, a bypass option with
inverted flow is available for the mineral oil, phosphate ester and water-based fluids models.
Please note that the volume flow is only measured in the direction of the arrow.
Aluminium models are offered as robust, low-cost volume flow meters for
monitoring non-corrosive, water-based or oil-based fluids. Oil-based fluids for
operating pressures of up to 250 bar (3500 psi).
Brass models are recommended for water monitoring applications or other systems
where there are no corrosion inhibitors.
Stainless steel models are used for monitoring hydraulic systems with operating
pressures of up to 350 bar (6000 psi) or other corrosive, caustic fluids such as acetic
acid. You can obtain further information from your technical consultant.
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 3
UNPACKING AND CHECKING THE
PRODUCT
Perform the following steps once you receive the product:
If the product packaging is damaged, ask the shipping agent to be present when the product is
unpacked. If the product is damaged and the shipping agent is not present, ask for an
inspection by the representative of the shipping agent within 48 hours of delivery and lodge a
complaint with the shipping agent. The purchaser has sole responsibility for lodging a
complaint about any damage to the device caused during transport.
Open the shipping packaging carefully and follow all the instructions specified on the outside.
Remove all the packaging materials and carefully remove the product from the packaging.
Retain the undamaged packaging and all the packaging materials for possible onward shipment
or storage. heck the product and the relevant accessories visually for any physical damage
such as scratches, loose or broken parts or other signs of damage that might have occurred
during transport.
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 4
FUNCTIONAL PRINCIPLE
The volume flow meter is a float-type measuring device. A sharp-edged baffle (1) located in the
piston assembly (2) forms an annular opening with the contoured measuring cone (3).
The piston assembly features a cylindrical PPS/ceramic magnet (4) that is coupled magnetically
to an external display magnet (5) which moves in direct response to the movement of the
piston. A calibrated spring (6) counteracts the flow in the forward direction.
These volume flow meters are the most readable products in their class. Vivid coloured
indicators move across the linear display scale (7), which contains numbers and markings in
bold that are easy to read. The improved resolution virtually eliminates any parallax issues
(reading errors caused by viewing from a different angle).
1
Baffle
9
rossplate
2
Piston assembly
10
Locking spring washer
3
Measuring cone
11
O
-
ring seal (pressure seal)
4
Internal magnet (piston magnet)
12
Threaded
connector
5
External magnet (display ring
-
13
End cap
6
Spring
14
High
-
pressure casing (pressure
7
Display scale
15
Protective casing (scale protection)
8
Locking ring
16
Rubber protective seal (bumper)
Table 1: Volume flow meter components
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 5
INSTALLATION
I portant infor ation
AUTION!
This product should be installed and maintained by technically qualified
personnel who have been trained on this specific product.
AUTION!
Read through the instructions before you install the device.
If you have any questions about installation or maintenance, call your local
supplier to obtain further information.
AUTION!
Volume flow meters for mineral oil are not recommended for water
applications.
If the measuring device is to be used for both mineral oil and water, brass water
meters are recommended. Please contact the manufacturer for customer-specific
details.
AUTION!
The volume flow meter may contain residual quantities of testing fluid when it
is delivered. This fluid should be removed before installation as this fluid may
be incompatible with some fluids or gases or dangerous.
Failure to follow this instruction may cause the device to be damaged!
AUTION!
This volume flow meter is unidirectional. The volume only flows in one
direction!
Any attempt to make fluids flow in the opposite direction to the flow arrow will
cause the measuring device to act as a non-return valve. The flow will be
stopped. The resulting increase in pressure will cause damage to the
components inside the measuring device!
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 6
The volume flow meter is a device that is easy to install. However, the following
measures are recommended to ensure it can be operated safely and without any faults:
Align the pipeline precisely. The piping should be aligned precisely and be of the
correct length. The high-pressure casing of the volume flow meter is able to
withstand impacts and flow/pressure pulsations. However, the pipeline should be
securely supported by external mounting brackets both before and after the
measuring device in order to prevent the pipeline from any sagging that might
shorten the useful life of the measuring device.
Use a rigid form of mounting. If the inlet or outlet of the volume flow meter is to
have a rigid mounting and the opposite connector is to be connected with a flexible
hose, the opposite end of the flexible hose must be mounted with a rigid fixing.
Use Teflon® tape to seal up the NPT threaded fitting.
Fit screw connections. Fit a screw connection close to the inlet or outlet of the
volume flow meter. This will make it quick and easy to remove or carry out an
inspection during the regular maintenance work.
Mount the volume flow meter either horizontally or vertically (flow arrow pointing
upwards or to the side). If the volume flow meter needs to be mounted inverted,
special inverted scales are available from the manufacturer.
Make sure that the fluid flows in the direction of the flow arrow (Figure 1 / p. 7).
Use at least one 74 µm filter. The measuring device will let through particles that
would block most valves and flow meters. Systems that do not have any filtering
should be equipped at least with a 74 µm filter.
Most hydraulic systems already have much finer filtering.
Dirt, iron filings or sealants, such as Teflon tape, may clog up the system and cause
malfunctions. If the measuring device has jammed in one position, follow the
cleaning and maintenance instructions.
Do not use any thread lock agent as a thread seal!
Do not install the volume flow meter near to any fittings that create turbulence, for
example elbows, reducer parts, short-cut valves, etc. The volume flow meter does not
require any flow straighteners or special lengths of straight inlet/outlet pipes to
stabilise turbulent flow patterns. However, in order to guarantee maximum
operational reliability, avoid fitting any elbows, valves and/or reducer parts in the
immediate vicinity of the device.
Do not install the volume flow meter in the vicinity of quick-acting valves. Quick-
acting valves may generate high hydraulic pressure peaks. These pressure peaks may
damage the internal components, which can cause inaccuracies or malfunctions.
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 7
Unidirectional devices (such as this volume flow meter) must not be operated in the
direction opposite to the one shown by the flow arrow. The piston acts like a non-
return valve and blocks the flow in the opposite direction. This causes an excessive
difference in pressure that may damage the internal components. The volume flow
meter is also available in a modified version that offers a bypass function for the
return flow in order to enable bidirectional flow.
Please note:
Volume flow meters are also available with a bypass function to allow reverse flow. lease
contact the manufacturer’s plant or the regional supplier for more details.
Installing the volu e flow eter
1. Mount the volume flow meter so that the fluid flows in the direction of the flow arrow.
Figure 1: Flow direction arrow
Flow direction
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it
contains.
Page 8
2. hoose an installation location that is suitable for inspection and product maintenance. To
connect the volume flow meter to the pipeline system, place a flat spanner on the wrench
flats of the volume flow meter next to the pipe connection that is to be installed.
Do not screw on the opposite end of the volume flow meter as this may cause leaks.
Attach the flat spanner on the same
side on which the pipelines are
tightened.
Never attach the flat spanner on the
opposite side of the pipeline that is to be
screwed on.
Figure 2: Installing the volume flow meter
Turn the volume flow meter by hand so
that you can see the flow scale.
Never use a flat spanner to turn the
protective casing in order to view the flow
scale.
Figure 3: Turning the volume flow meter
Valid from: 15.02.2021 / Source: VAM-UM-00551-EN-04
Despite careful checking, we cannot exclude the possibility of errors in this document and we accept no liability for the information it contains.
Page 9
Installing the power eter
1. Mount the power meter so that the fluid flows in the direction of the flow arrow. (
See Figure
1. Page 7
)
2. Install the power meter at any point in the hydraulic circuit, so that the volume flow,
pressure and temperature displays can be read easily. To connect the power meter to the
piping system, place a wrench on the valve block (wrench flat) on the inlet side.
Do not screw on the opposite end of the power meter as this may cause leaks.
(See
Figure 4).
Attach the wrench on the same side on
the valve body on which the pipeline is
tightened.
Never attach the wrench on the opposite
side of the pipelines that are to be
screwed on.
Figure 4 (schematic diagram): Mounting the power meter
3. Use the plastic caps that are also supplied to seal off the power meter after use and keep it
clean. Store it in a transport case.
Alternatively, use quick release couplings as a simple connection and to protect
against any contamination when the power meter is not in use.
You will find schematic diagrams illustrating the mounting position during typical
test procedures with the power meter under
(" onducting the power measurement”
on page 11
).
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