AFRISO HydroFox DMU 08 User manual

© 2021 AFRISO-EURO-INDEX GmbH – All rights reserved.
Lindenstraße 20
Operating instructions 74363 Güglingen
Fon: [phone]
Service: [phone]
[e-mail]
probes www.afriso.com
DMU 08, DMU 08 T, DMU 09
ID: 900.100.0832 Version: 10.2021.0
1. General and Safety-Related Information on
this Operating Manual
This operating manual enables safe and proper
handling of the product.
This operating manual forms part of the device and
should be kept in close proximity to the place of use,
accessible for staff members at any time.
All persons entrusted with the mounting, installation,
putting into service, operation, maintenance,
removal from service, and disposal of the device
must have read and understood the operating
manual and in particular the safety-related
information.
The following documents are an important part
of the operating manual:
- Data sheet
For specific data on the individual sensors, please
refer to the respective data sheet.
Download these by accessing www.afriso.com or
request them by e-mail or phone: [email protected].
In addition, the applicable accident prevention
regulations, safety requirements, and country-
specific installation standards as well as the
accepted engineering standards must be observed.
1.1 Symbols Used
Warning word
- Type and source of danger
- Measures to avoid the
danger
Warning word Meaning
DANGER
- Imminent danger!
- Non-compliance will
result in death or serious
injury.
WARNING
- Possible danger!
- Non-compliance may
result in death or serious
injury.
CAUTION
- Hazardous situation!
- Non-compliance may result
in minor or moderate injury.
NOTE
– draws attention to a possibly hazardous
situation that may result in property damage in case
of non
-compliance.
Precondition of an action
1.2 Staff Qualification
Qualified persons are persons that are familiar with
the mounting, installation, putting into service,
operation, maintenance, removal from service, and
disposal of the product, and have the appropriate
qualification for their activity.
This includes persons that meet at least one of the
following three requirements:
- They know the safety concepts of
metrology and automation technology and
are familiar therewith as project staff.
- They are operating staff of the measuring
and automation systems and have been
instructed in the handling of the systems.
They are familiar with the operation of the
devices and technologies described in this
documentation.
- They are commissioning specialists or are
employed in the service department, and
have completed training that qualifies
them for the repair of the system. In
addition, they are authorized to put into
operation, to ground, and to mark circuits
and devices according to the safety
engineering standards.
All work with this product must be carried out by
qualified persons!
1.3 Intended Use
The probes are exclusively suitable for continuous
hydrostatic filling-level measurement.
The user must check whether the device is suited
for the selected use. In case of doubt, please
contact our sales department ([e-mail]).
AFRISO assumes no liability for any wrong selection
and the consequences thereof!
The fluids that can be measured are liquids that are
compatible with the materials in contact with the
fluids, described in the data sheet. For application, it
must additionally be ensured that the fluid is
compatible with the parts in contact with the fluid.
The specifications listed in the current data sheet
are binding and must absolutely be complied with. If
you do not have the data sheet to hand, please
request it or download it from our homepage.
(http://www.afriso.de)
1.4 Limitation of Liability and Warranty
Failure to observe the instructions or technical
regulations, improper use and use not as intended,
and alteration of or damage to the device will result
in the forfeiture of warranty and liability claims.
1.5 Safe Handling
NOTE – Treat the device with care both in the
packed and unpacked condition!
NOTE – The device must not be altered or modified
in any way.
NOTE – Do not throw or drop the device!
NOTE – Excessive dust accumulation (over 5 mm)
and complete coverage with dust must be
prevented!
The device is state-of-the-art and is operationally
reliable. Residual hazards may originate from the
device if it is used or operated improperly.
1.6 Packaging Content
Check that all parts listed in the scope of delivery
are included free of damage, and have been
delivered according to your purchase order:
- probe
- operating manual
2. Product Identification
The device can be identified by means of the type
plate with order code. The most important data can
be gathered therefrom.
1Type designation 4Order code
2Input 5Terminal assignment
3Output 6Serial number
Fig. 1: Type plate
NOTE – The type plate must not be removed!
3. Mounting
3.1 Mounting and Safety Instructions
WARNING
- airborne parts, leaking fluid,
electric shock
- Always mount the device in a
depressurized and de-
energized condition!
NOTE – If there is increased risk of damage to the
device by lightning strike or overvoltage, increased
lightning protection must additionally be provided!
NOTE – Install the probe such that any rubbing or
bumping of the sensor head (sensor element), e.g.
against a container wall, is excluded. Observe the
operating conditions such as, for example, flow
conditions. This applies in particular to probes
equipped with cable outlet and to devices with tube
extensions of a length over 2.8 m.
NOTE – Do not remove the packaging or protective
caps of the device until shortly before the mounting
procedure, in order to exclude any damage to the
diaphragm and the threads!
Protective caps must be kept! Dispose of the
packaging properly!
NOTE – Treat any unprotected diaphragm with
utmost care; this can be damaged very easily.
3.2 Mounting Steps for Probes
NOTE – Always immerse the device slowly into the
fluid to be measured! If the probe strikes the liquid
surface, the diaphragm could be damaged or
destroyed.
NOTE – Fasten the probe properly according to your
requirements.
NOTE –Free-hanging probes with FEP cables
should not be used if effects of highly charging
processes can be expected.
As standard, the probe is supplied without fastening
material. Clamp fixing, anchor clamp and mounting
flanges are available as accessories, for different
mounting variants.
3.3 Mounting Steps for fitting set
The mounting thread is clean and undamaged
The O-ring is undamaged and seated in the
designated groove
1. Assemble suitable parts according to demands.
2. Conduct the Cable by the PG11 screw
connection. Note the submersion depth in the
container.
3. Then tighten the single parts of the fitting set by
hand.
If you need a fitting set, this can be ordered from
AFRISO as an accessory (Art. No. 52125).
3.4 Removal of Protective Cap (if equipped)
The probes are equipped with a plastic protective
cap to protect the diaphragm. This has to be pulled
off prior to putting into service if the probe is to be
used in a higher viscous fluid such as sludge. This
makes the probe front-flush, and the fluid reaches
the diaphragm.
Removal by hand
1. Hold the probe such that the protective cap
points upward.
2. Hold the probe with one hand on the probe
section
(Fig. 2 – 1).
3. Pull off the protective cap (Fig. 2 – 2) with the
other hand.
Removal using a tool (recommended)
1. Hold the probe such that the protective cap
points upward.
2. Slide a thin tool (Fig. 2 – 8), e.g. a screwdriver,
through two opposite bores of the protective cap
(Fig. 2 – 2).
3. Lever off the protective cap.
NOTE –Do not damage the measuring cell (Fig. 2 –
7) under the protective cap!
3.5 Cable Protection (Optional)
According to order, the probe was supplied with
cable protection; if the probe was prepared for
mounting by means of a stainless steel or PVC tube
(optional), the customer must affix a cable protection
themselves.
Fig. 3: Cable protection variants
4. Electrical Connection
4.1 Connection and Safety Instructions
WARNING
-
Improper installation may result
in electric shock
- Always mount the device in a
depressurized and de-
energized condition!
DANGER
- Explosion hazard if the
operating voltage is too high
(max. 28VDC)!
- Operate the device only within
the specification! (data sheet)
The limit values listed in the EC type-
examination certificate are observed.
(Capacity and inductance of the connection
cable are not included in the values.)
The supply corresponds to protection class II.
(protective insulation)
NOTE – for devices with cable outlet
- When routing the cable, the following minimum
bend radii must be observed:
Cable without air hose:
fixed installation: 5-fold cable diameter
flexible use: 10-fold cable diameter
Cable with air hose:
fixed installation: 10-fold cable diameter
flexible use: 20-fold cable diameter
- In case of devices with cable outlet and
integrated ventilation hose, the PTFE filter
located at the cable end on the relative pressure
hose must neither be damaged nor removed!
NOTE –Use a shielded and twisted multicore cable
for the electrical connection.
NOTE –If a transition is desired from a cable with
relative pressure hose to a cable without relative
pressure hose, we recommend using the terminal
box with pressure equalizing port (Art. No. 31824).
4.2 Electrical Installation
Connect the device electrically according to the
information specified on the type plate, the following
table, and the connection circuit diagram.
Terminal assignment table:
Electrical
connections
Cable colors
(IEC 60757)
Supply +
Supply −
wh (white)
bn (brown)
Shield
gnye (green-yellow)
DMU 08 T
Cable colors
(IEC 60757)
Supply P+
Supply P–
Supply T+
Supply T–
wh (white)
bn (brown)
gy (gray)
pk (pink)
Shield
gnye (green-yellow)
Connection circuit diagrams:
2-wire system (power)
2x2-wire-system (current) (DMU 08 T)
NOTE –In the case of relative pressure gauges, the
cable contains a ventilation hose for pressure
equalization. Route the end of the cable into an area
or suitable connection box which is as dry as
possible and free from aggressive gases, in order to
prevent any damage
Supply +
Supply –
V
S
A
p
I
Fig. 2: Removal of protective cap
Examples for cable protection
with stainless steel tube
Stainless
steel
corrugated
tube
Stainless
steel or PVC
tube
withou
t
1 2 3 4 5 6
I
I
+
supply
P+
supply P-
supply T+
supply T-
VS
A
p
T
V
S
A
–
+
–

Fig. 7: Separability
NOTE –Normally, the required cable is included in
the scope of delivery. If existing or special cables
need to be integrated, this will increase the total
resistance. For applications where the additional line
resistance turns out to be interfering, the designated
cable must be checked by means of the following
calculation:
A
l
R
L
⋅⋅
=2
ρ
With RL: resistance of connection line in Ω
Á: spec. resistance in Ωmm²/m
l: conductor length in m
A: conductor cross-section in mm²
( )
A0,02R...RRU
BürdeL2L1Ges
⋅+++=
with UGes: total voltage drop
RBürde: load resistance (this can be
gathered from the current data sheet)
The following condition must be met:
min
B
Ges
BU
U
U+
>
with VS:designated supply voltage
VSmin:
minimum supply voltage (this can be
gathered from the current data sheet)
4.3 Separable Probes
To simplify storage and maintenance, the probe
head can be separated from the cable part and
replaced without laborious assembly work, if
needed. The following probes are separable.
Disassembly
1. Hold the probe with one
hand at the probe section
(2) and cautiously turn
the sleeve nut (4)
counterclockwise with the
other hand. When doing
so, note that the cable
part (3) must not be
distorted against the
housing!
2. Hold the probe part (2)
straight when unscrewing
it from the cable part (3), and after loosening,
pull off the probe part in a straight motion so that
the plug connection is not damaged.
Assembly
O-rings are not damaged (5, 6) or damaged
O-rings have been replaced
Radial O-rings (5) have been greased with
petroleum jelly or O-ring grease
Any grease residues have been removed from
the axial O-ring (6).
1. Insert the cable part (3) into the mating
connector of the probe section (2) in a straight
motion.
2. Hold the probe with one hand at the probe
section (2) and screw on the sleeve nut (4)
tightly with the other hand. When doing so, note
that the cable part (3) must not be distorted
against the housing!
Pin assignment
Electrical
connections
Binder series
723 (5-pin)
Binder series
723 (7-pin)
Supply +
Supply -
3
1
3
1
Shield
5
2
5. Commissioning
The device has been installed properly
The device does not have any visible defect
6. Maintenance
DANGER
- Airborne parts, leaking fluids,
electric shock
- Always service the device in a
depressurized and de-
energized condition!
Attention
- due to aggressive fluids
- Wear suitable protective
clothing,
e.g. gloves, safety goggles.
In principle, the device requires no maintenance.
If necessary, clean the housing of the device using a
moist cloth and a non-aggressive cleaning solution.
Cleaning of the diaphragm:
Deposits or contamination may occur on the
diaphragm in case of certain fluids. It is
recommended to establish appropriate maintenance
intervals for checking purposes.
Clean the diaphragm cautiously using a non-
aggressive cleaning solution and a soft paintbrush
or sponge.
If the diaphragm is calcified, it is recommended to
have the decalcification performed by AFRISO.
Please note the chapter “Service/Repair” with regard
to this.
NOTE –Wrong cleaning may damage the
measuring cell beyond repair. Do not use any sharp
or pointed item, or compressed air to clean the
diaphragm.
7. Troubleshooting
CAUTION
- Airborne parts, leaking fluids,
electric shock
- If malfunctions cannot be
resolved, put the device out of
service and proceed according
to sections 8 and 10!
In case of malfunction, it must be checked whether
the device has been correctly installed mechanically
and electrically. Use the following table to analyze
the cause and resolve the malfunction, if possible.
Fault: no output signal
Possible cause
Fault detection / remedy
connected incorrectly
Checking of connections
Conductor/wire breakage
Checking of all line
connections.
Defective measuring
device (signal input)
Checking of ammeter
(miniature fuse) or of
analog input of your
signal processing unit
Fault: analog output signal too low/small
Possible cause
Fault detection / remedy
Load resistance too high
Checking of load
resistance (value)
Supply voltage too low
Checking of power pack
output voltage
Defective energy supply
Checking of the power
pack and the supply
voltage being applied to
the device
Fault: slight shift of the output signal
Possible cause
Fault detection / remedy
Diaphragm of measuring
cell is severely
contaminated
Cleaning using a non-
aggressive cleaning
solution and soft
paintbrush or sponge
Diaphragm of measuring
cell is calcified or crusted
Recommendation: Have
the decalcification or
cleaning performed by
AFRISO
Fault: large shift of the output signal
Possible cause
Fault detection / remedy
Diaphragm of measuring
cell is damaged (caused
by overpressure or
mechanically)
Checking of diaphragm;
when damaged, send the
device to AFRISO for
repair
Fault: wrong or no output signal
Possible cause
Fault detection / remedy
Cable damaged
mechanically, thermally or
chemically
Checking of cable; pitting
corrosion on the stainless
-
steel housing as a result
of damage on cable; when
damaged, send the device
to AFRISO for repair
8. Removal from Service
DANGER
- Airborne parts, leaking fluids,
electric shock
- Always dismount the device in
a depressurized and de-
energized condition!
Attention
- due to aggressive fluids.
- Wear suitable protective
clothing,
e.g. gloves, safety goggles.
NOTE – After dismounting, mechanical connections
must be fitted with protective caps.
9. Service/Repair
Information on service / repair:
- www.afriso.com
- [e-mail]
- [e-mail]
9.1 Recalibration
The offset value or range value may shift during the
life of the device. In this case, a deviating signal
value in relation to the set lower or upper measuring
range value is output. If one of these two
phenomena occurs after extended use, a
recalibration in the factory is recommended. Please
note the chapter “Service/Repair” with regard to this.
9.2 Returning the device
Get in touch with us before returning your product
([e-mail]).
A declaration of decontamination must be enclosed
with the device for every return, regardless of
whether it is for recalibration, decalcification,
conversion or repair. Corresponding templates can
be found on our homepage.
Devices without a declaration of decontamination will
only be examined after receipt of a cor-responding
declaration in case of doubt regarding the medium
used!
10. Decommissioning, diposall
Dispose of the product in compliance with all
applicable directives, standards and safety
Regulations.
1. Disconnect the product from
mains.
2. Dismount the product (see
chapter "Mounting", reverse
sequence of steps).
3. Dispose of the product.
11. Warranty
See our terms and conditions at www.afriso.com or
your purchase contract for information on warranty.
12. EU Declaration of Conformity