AFRISO HydroFox DMU 08 Petunjuk Pengoperasian - Halaman 2
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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:
ρ
⋅
⋅
2
l
R
=
L
A
With
R
:
resistance of connection line in Ω
L
spec. resistance in Ω mm²/m
Á:
l:
conductor length in m
A:
conductor cross-section in mm²
(
)
=
+
+
+
⋅
U
R
R
...
R
0,02
A
Ges
L1
L2
Bürde
with
U
: total voltage drop
Ges
R
:
load resistance (this can be
Bürde
gathered
from the current data sheet)
The following condition must be met:
U
>
U
+
U
B
Ges
B
min
with
V
:
designated supply voltage
S
V
: minimum supply voltage (this can be
Smin
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)
Fig. 7: Separability
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
Binder series
Binder series
connections
723 (5-pin)
723 (7-pin)
Supply +
3
3
Supply -
1
1
Shield
5
2
5. Commissioning
The device has been installed properly
The device does not have any visible defect
6. Maintenance
Airborne parts, leaking fluids,
-
electric shock
Always service the device in a
-
depressurized and de-
DANGER
energized condition!
due to aggressive fluids
-
Wear suitable protective
-
clothing,
Attention
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
Airborne parts, leaking fluids,
-
electric shock
If malfunctions cannot be
-
resolved, put the device out of
CAUTION
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
Checking of all line
Conductor/wire breakage
connections.
Checking of ammeter
Defective measuring
(miniature fuse) or of
device (signal input)
analog input of your
signal processing unit
Fault: analog output signal too low/small
Possible cause
Fault detection / remedy
Checking of load
Load resistance too high
resistance (value)
Checking of power pack
Supply voltage too low
output voltage
Checking of the power
pack and the supply
Defective energy supply
voltage being applied to
the device
Fault: slight shift of the output signal
Possible cause
Fault detection / remedy
Cleaning using a non-
Diaphragm of measuring
aggressive cleaning
cell is severely
solution and soft
contaminated
paintbrush or sponge
Recommendation: Have
Diaphragm of measuring
the decalcification or
cell is calcified or crusted
cleaning performed by
AFRISO
Fault: large shift of the output signal
Possible cause
Fault detection / remedy
Diaphragm of measuring
Checking of diaphragm;
cell is damaged (caused
when damaged, send the
by overpressure or
device to AFRISO for
mechanically)
repair
Fault: wrong or no output signal
Possible cause
Fault detection / remedy
Checking of cable; pitting
corrosion on the stainless-
Cable damaged
steel housing as a result
mechanically, thermally or
of damage on cable; when
chemically
damaged, send the device
to AFRISO for repair
8. Removal from Service
Airborne parts, leaking fluids,
-
electric shock
Always dismount the device in
-
a depressurized and de-
DANGER
energized condition!
due to aggressive fluids.
-
Wear suitable protective
-
clothing,
Attention
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
-
-
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
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.
Disconnect the product from
1.
mains.
Dismount the product (see
2.
chapter "Mounting", reverse
sequence of steps).
Dispose of the product.
3.
11. Warranty
See our terms and conditions at www.afriso.com or
your purchase contract for information on warranty.
12. EU Declaration of Conformity