Visatron VN 115 / 93 Manuel utilisateur
VISATRON
Operating Instructions
Article No.: 10980
Edition: 04 W
VN 115 / 93
VN 116 / 93
VN 215 / 93
D - 66440 Blieskastel / Saar / Germany . Industriering 14
. Airport Saarbrücken
++ 49 (0) 6842 - 508 / - 0 Telephone / - 260 Fax . eMail: [email protected]
SCHALLER-AUTOMATION
INDUSTRIAL AUTOMATION TECHNOLOGY KG
06. 04
It is recommended to read this instruction manual before
commencing the repair, assembly or commissioning of the oil mist
detector system!
CAUTION: The manufacturer’s warranty will become void if these
instructions are not followed!
When oil mist shutdown on engine occurs, operator must follow
engine maker’s instruction!
Unless notified to the contrary, these operating instructions are
applicable for:
VN 115 / 93
VN 116 / 93
VN 215 / 93
In case of an oil mist alarm, the oil mist
detector (OMD) must be in condition to react
within the next few seconds and shut down
the engine, in order to minimise immediate or consequential
damages!
More Information can be found in SCHALLER AUTOMATION‘ S Oil
Mist Vademecum which SAB provides free of charge.
!
!Safety Signs
in general
Safety Signs
electrical
Safety Signs
parts are sensitive
to electrostatic
discharge
Operating Instruction VN 93
06. 04
1. Produktbeschreibung
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Installation
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Inbetriebnahme / Betrieb
Commissioning / Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Funktionsprüfung / Wartung
Performance Test / Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Störungen und Störungsbeseitigung
Malfunction and troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Reparatur
Repairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Ersatzteile / Service - Box
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Service- Adressen
Service adresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Optionen
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10. Prospekte, Druckschriften, usw.
Brochures, Leaflets etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. Allgemeines
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12. Notizen
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inhalt,
Index
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Betriebsanweisung Visatron VN 93 / Operating Instruction Visatron VN 93
06. 04
Product Description
Oil mist detectors protect large diesel engines of all applications from heavy
consequential damage as a result of overheating.
Application
With the VISATRON oil mist detectors of the type VN 115 / 93 and 116 / 93, a header
pipe sampling system is used for suction extraction of the crankcase atmosphere
from each crankcase compartment; whereas an individual compartment suction pipe
system is required for the type VN 215 / 93.
Application of the different VISATRON® devices and suction systems:
VN 115 / 93
- Basic design, suitable for the monitoring of trunk piston diesel engines with in-line
and V cylinder arrangements, running at medium and high speed.
- Damage detection through a header pipe sampling system without localisation of
the point of damage.
VN 116 / 93
- Design with a higher sensitivity, suitable for the monitoring of trunk piston diesel
engines with in-line and V cylinder arrangements, running at medium and high
speed.
- Damage detection through a header pipe sampling system with a display of the
crankcase compartment half (left or right side of the position of the detector) in
which overheating damage has arisen.
- The header pipe sampling system is the same as in the VN 115 / 93, so the
VN 116 / 93 can replace the VN 115 / 93 without modification of the suction system
if localisation of damage (i. e. left or right side of engine) is called for.
1. 01
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Operating Instruction Visatron VN 93
06. 04
1. 02
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VN 215 / 93
- Device with the highest sensitivity, suitable for the monitoring of large four stroke
and crosshead engines running at medium and slow speed.
- Damage selection through the individual compartment suction pipe system, with
display of the compartment with the overheating damage.
Options
Available for all devices as an option in the package (option must be ordered with the
particular OMD, not separately)
- Serial RS 485 interface
- Built-in history storage device for storing events with the data and time
Connection to a PC is possible with this option. The trend of the opacity (oil mist
concentration) can be graphically displayed through this PC with the DIEMOS
software that can also be provided as an option.
Furthermore, the interface makes it possible to drive the remote display. The history
storage device is for storing events in the detector, such as the appearance of an
alarm with the date and time. These data can subsequently be read out through the
serial interface.
06. 04
1. 03
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Operating Instruction Visatron VN 93
06. 04
Function description
All VISATRON® devices continuously draw the atmosphere from every compartment
in the crankcase area through the suction system. The suction vacuum required is
generated through a wear- free air jet pump in the device, fed with compressed air
(drive air), and is consequently independent of the power supply.
The sample flow, consisting of the sucked-in atmosphere of the crankcase
compartment, is guided through an optical channel for measuring turbidity. The
turbidity of the sample flow is measured by the absorption of infrared light.
% Opacity is used as the dimensional unit of the turbidity; 100% Opacity means total
absorption, and 0% Opacity means no absorption. Oil mist becomes explosive from
a concentration of approx. 50 mg of atomised oil in 1 litre of air and up, which
corresponds to an opacity of approx. 40%.
The sensitivity, i.e. the opacity that is required to trigger an alarm, can be set at 10
different levels in all devices.
A slow increase in the operating opacity or the contamination of the optics is
com-pensated in the microprocessor system up to a maximum safety alarm
threshold.
The contamination is strongly limited through scavenging air chambers that are
supplied with fresh air and are located in front of the optics.
The VN 93 series is distinguished from the VN 87 series through the following
features:
- Scavenging air chambers are not supplied with fresh air from the engine room, but
instead with forced air, so fumes from a fire in the machine room cannot lead to an
alarm.
- The measuring head heating unit for the avoidance of precipitating condensation
water in the device, which can be delivered as an option to the VN 87, is integrated
in the measuring head of the VN 93.
- An optional RS 485 interface with a history storage device permits the connection of
the VN 93 to the ship's computer or PC.
- A pre-alarm relay, programmable in the sensitivity, is activated before an engine
stop will be triggered by a high concentration of oil mist.
- The possibility of a calibration with fresh air exists for the types VN 116 / 93 and
VN 215 / 93. It permits the measurement of the absolute opacity.
Design
The air jet pump, the connector plug, the pipe connector box (VN 115 / 93) or the
valve box (VN 116 / 93 and VN 215 / 93) and the shock-absorbing mounting plate for
the actual measuring head are supported on a sturdy base plate.
The opacity measurement path and the electronics with microprocessor control are
located in the measuring head.
Three wear-free light sensitive buttons are provided for the operation and display:
2 pieces of 7-segment displays, each with 4 digits, 1 LED chain and 3 further LEDs
to display the operating state.
Measuring head
Pipe
connector
box
Connector
plug of
measuring
head
Inspection cover
Base plate
Display and light
sensitive buttons
VN 115 / 93
1. 04 Operating Instruction Visatron VN 93
06. 04
1. 04 / 1
Short form
operation
instruction
Air jet pump
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RS 485
Connector
VN 116 / 93
VN 215 / 93
1. 05
Operating Instruction Visatron VN 93
06. 04
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1. 05 / 1
1. 05 / 2
Air jet pump
Short form
operation
instruction
Display and
light sensitive
buttons
Display and
light sensitive
buttons
Short form
operation
instruction
Measuring head
Valve box
Connector plug
of measuring
head
Inspection cover
Base plate
Pipe
connecting
flange
Display
damaged
compartment
Connector
plug of
valve box
Base plate
Measuring head
Valve box
Connector plug
of measuring
head
Inspection cover
Pipe connector
flange
Display of
damaged
compartment
side
Connector
plug of
valve box
RS 485
Connector
RS 485
Connector
1. 06
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ödskhgölskfhlklgkhllghotot Operating Instruction Visatron VN 93
VISATRON® VN 115 / 93
The detection of damage takes place through a header pipe sampling system without
localisation of the point of damage.
The mixture of atmosphere from the crankcase passes from all individual
compartments via the header pipe through the detector´s pipe connector box into the
opacity measurement path in the housing of the measuring head.
The alarm threshold can be set at 10 levels, in a range from 0.5% to 25% Opacity.
VISATRON® VN 116 / 93
The detection of damage takes place through a header pipe sampling system with a
display of the crankcase compartment half in which the overheating damage has
arisen.
The mixture of atmosphere from the crankcase passes from all individual
compart-ments via the header pipe through the valve box into the opacity
measurement path, in the housing of the measuring head.
If the opacity of the mixture of atmosphere from the crankcase exceeds 10% of the
alarm threshold that has been set, a so-called damage check starts. The valves in
the valve box are switched over according to a certain algorithm during the damage
check, until the half of the crankcase compartments with the overheating damage
has been found.
The alarm threshold can be set at 10 levels, in a range from 0.7% to 28% Opacity.
The increased sensitivity, in comparison with the VN 115 / 93, results from the fact
that an alarm is triggered if the difference in opacity, between the two halves of the
crankcase compartment, exceeds 20% of the alarm threshold that has been set.
VISATRON® VN 215 / 93
Damage selection takes place through an individual compartment suction pipe
system (the OMD is directly connected to each compartment) with a display of the
compartment in which the overheating damage has arisen.
Damage selection takes place as in the VN 116 / 93. The wear and tear free reed
valves are switched over according to a certain algorithm during the damage check,
until the compartment with the damaged location has been found.
06. 04
Ce manuel convient aux modèles suivants
3
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