Deckma OMD-24 Series User manual

DECKMA
HAMBURG
We help to protect the Environment
I N S T R U C T I O N M A N U A L
OMD-24 Series
15 ppm Bilge Alarm
OMD-24 Series
OMD-24
Electric Valve –OMD-24 EV
Electric Valve Auto Clean –OMD-24 EVA
Auto Clean –OMD-24 A
(Optional: Manual Cleaning Unit MCU)

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HAMBURG
Page: 1
Usage of this instruction manual
This instruction manual will guide you how to use the OMD-24 Series. The instruction
manual is split into sections. Every section handles a specific part of the OMD-24 Series.
The first section gives you general information about the safety before using and servicing
the OMD-24 Series. Please take notice on this section.
You will also find information about the construction and the installation of
OMD-24 Series. The programming mode is explained in detail at the end of the instruction
manual.
This instruction manual also contains also information about the service support and our
contact details. The symbols below will accompany for a better understanding.
Symbols

This symbol is used for giving general advices.
i
This symbol is used to clarify a recommendation.

This symbol is used for giving advices about servicing.

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HAMBURG
Page: 2
IMPORTANT NOTICE
Replacement components for 15 ppm Bilge Alarms
General
All monitors in our range are inspected and tested to the related International Maritime
Organization IMO requirements at our factories prior to delivery.
In normal use, the units should operate correctly and without fault over a long period of time
requiring only small amounts of maintenance to be carried out as outlined in the instruction
manual.
Service Exchange Units
In the event of a monitor malfunction due to electrical or electronic component failure it is our
recommendation that a service exchange unit be ordered.
The defective instrument should be returned to our works within 30 days of supplying the service
exchange unit, then only the repair charge is payable. Otherwise the whole cost of a service
exchange unit becomes payable.
This procedure is by far the easiest and most cost-effective way of ensuring the monitor on board
conforms to IMO resolution MEPC.107(49).
Remark
According the MEPC.107(49) § 4.2.11 the units have to be checked at IOPP Certificate renewal
survey by the manufacturer or persons authorized by the manufacturer. Alternatively, the unit
may be replaced by a calibrated 15 ppm Bilge Alarm.
The OMD-24 Series are designed in that way, that only the Measuring Cell needs to be changed,
as these units carry the Calibration Certificate. The Calibration Certificate with the date of the last
calibration check should be retained onboard for inspection purposes.
If for some reasons the Computer Unit needs to be changed, it has to make sure, that the memory
card will remain on board for at least 18 months. The new Computer Unit will carry its own
memory card. The old card can be inserted into the new unit only for reading. Writing is only
possible with the card delivered with the new Computer Unit. For details see section 14.
Memory Card.
Warranty
Our warranty terms are 12 months after installation but maximum 18 months after delivery ex
works. The maker undertakes to remedy any defect resulting from faulty materials of
workmanship except wearing parts.
The maker's obligation is limited to the repairs or replacement of such defective parts by his own
plant or one of his authorized service stations.
The purchaser shall bear the cost and risk of transport of defective parts and repaired parts
supplied in replacement of such defective parts.
i
ANY DISMANTLING OR BREAKING OF A SEAL WILL VOID THE WARRANTY.

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HAMBURG
Page: 3
Content:
Usage of this instruction manual ........................................................................................... 1
Symbols ........................................................................................................................................1
Revision ................................................................................................................................ 6
1. Introduction................................................................................................................... 7
1.1 OMD-24 ............................................................................................................................7
1.2 OMD-24 EV........................................................................................................................7
1.3 OMD-24 EVA .....................................................................................................................7
1.4 OMD-24 A .........................................................................................................................7
2. Important Notes ............................................................................................................ 8
3. Principle of operation .................................................................................................... 9
3.1 Measuring Principle...........................................................................................................9
3.2 Display Visualization..........................................................................................................9
3.3 Alarms ..............................................................................................................................9
3.4 Adjustment .....................................................................................................................10
3.4.1 Limited Adjustment Alarm Set Point ...................................................................................................10
3.5 Active Current Interface...................................................................................................10
3.6 Inputs..............................................................................................................................11
3.7 EV (Electric clean water Valve) .........................................................................................11
3.8 Automatic Cell Cleaning Device........................................................................................11
3.9 MCU (Manual Cleaning Unit)............................................................................................ 12
3.10 Features ..........................................................................................................................12
4. Specification ................................................................................................................ 13
4.1 Specification OMD-24 ......................................................................................................14
4.2 Specification OMD-24 EV .................................................................................................15
4.3 Specification OMD-24 EVA ...............................................................................................16
4.4 Specification OMD-24 A...................................................................................................17
5. Construction ................................................................................................................ 18
5.1 Construction OMD-24......................................................................................................19
5.2 Construction OMD-24 EV .................................................................................................20
5.3 Construction OMD-24 EVA ...............................................................................................21
5.4 Construction OMD-24 A...................................................................................................22
5.5 Manual Cleaning Unit (MCU)/ Automatic Cell Cleaning Device ..........................................23

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5.5.1 Flow rate regulation on MCU, Auto Clean System....................................................................................23
6. INSTALLATION ............................................................................................................. 24
6.1 Installation OMD-24 ........................................................................................................25
6.2 Installation OMD-24 EV ...................................................................................................26
6.3Installation OMD-24 EVA .................................................................................................27
6.4 Installation OMD-24 A ..................................................................................................... 28
7. Piping .......................................................................................................................... 29
7.1 Piping OMD-24 ................................................................................................................29
7.2 Piping OMD-24 EV ...........................................................................................................31
7.3 Piping OMD-24 EVA .........................................................................................................32
7.4 Piping OMD-24 A .............................................................................................................33
8. Cabling......................................................................................................................... 34
8.1 External Control System...................................................................................................39
9. Power Supply............................................................................................................... 40
10. Commissioning......................................................................................................... 41
10.1 Electrical and Piping.........................................................................................................41
10.2 Instrument Start-Up Sequence......................................................................................... 42
10.3 Flow rate Adjustment ......................................................................................................42
10.4 System Settings ...............................................................................................................44
10.5 Auto Clean Control Unit...................................................................................................44
11. OMD-24 Series Operating instructions...................................................................... 46
11.1 Cleaning Options .............................................................................................................47
12. Operator Maintenance............................................................................................. 48
12.1 General Test....................................................................................................................48
12.2 Normal Operation ........................................................................................................... 48
12.3 Cleaning Process..............................................................................................................49
12.4 Intensive Cleaning ...........................................................................................................49
12.5 System Test.....................................................................................................................49
12.6 Data Logger Checking ......................................................................................................50
12.7 MCU and Automatic Cell Cleaning Device.........................................................................50
12.8 Maintenance Recommendations......................................................................................51
13. Programming Mode ................................................................................................. 52
14. Memory Card ........................................................................................................... 54

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14.1 OMD-CR Memory Card Reader.........................................................................................55
15. Fault finding............................................................................................................. 56
15.1 Automatic Cell Cleaning Unit Fault Finding .......................................................................58
16. Calibration ............................................................................................................... 59
16.1 OMD-24 Series ................................................................................................................59
16.2 Calibration and Repeatability Check.................................................................................59
16.3 Function Test at Classification Survey and Port State Control ............................................60
17. OMD-24 Series with 5 ppm Alarm Set Point .............................................................. 61
18. Spare Parts............................................................................................................... 62
18.1 Recommended On Board Spares ...................................................................................... 64
19. Optional Equipment ................................................................................................. 65
20. REMARKS................................................................................................................. 66
21. Appendix I................................................................................................................ 67
21.1 Navigation Buttons..........................................................................................................67
21.2 Functional Buttons .......................................................................................................... 69
21.2.1 Functional Button “TEST” ...............................................................................................................69
21.2.2 Functional Button “ON”..................................................................................................................71
21.2.3 Functional Buttons AL1/ AL2/ SET ..................................................................................................73
21.2.4 Functional Button “SYS”..................................................................................................................76
21.3 Data Logger Operation Buttons........................................................................................ 77
22. Appendix III.............................................................................................................. 79
22.1 ALARMS ..........................................................................................................................79
23. Appendix IV. ............................................................................................................ 80
23.1 Operator Maintenance Quick Checklist ............................................................................80
24. Appendix V .............................................................................................................. 81
24.1 Servicing and Cleaning Manual.........................................................................................81
Index................................................................................................................................... 94
List of Figures ...................................................................................................................... 95
Sales & Service Locations ............................................................................................ 96
Notes: ................................................................................................................................. 97
Certificates.......................................................................................................................... 98

DECKMA
HAMBURG
Page: 6
Revision
Document-Name
Revision No.
Notation
Date
OMD-24 Series
R00_20160708
Temporarily
Instruction Manual
15.11.2017

DECKMA
HAMBURG
Page: 7
1. Introduction
The OMD-24 Series Bilge Alarm Units have been designed specifically for use in
conjunction with 15 ppm oil-water separator units and have a specification and
performance which exceeds the requirements of the International Maritime Organization
IMO specifications for 15 ppm Bilge Alarms contained in Resolution MEPC.107 (49).
The units are supplied with 2 works-adjusted alarms at 15 ppm. Set points from 1 ppm to
15 ppm are possible and can be adjusted on site at any time by using the buttons at the
front panel.
If an alarm set point is exceeded, the alarms are visible at the front panel and the
appropriate relays are switched. In case of malfunction the “SYS LED” at the front panel
will change from blinking green to permanent red.
For the data logging function, the unit requires a status input from the separator.
A 0(4) - 20 mA signal output (equal to 0 - 30 ppm) is available for driving a recorder or
external meter.
By request the OMD-24 Series are also available with 5 ppm alarm set point. Additionally,
instrument versions equipped with a Measuring Cell Cleaning Unit or an Automatic Cell
Cleaning Device are available.
1.1 OMD-24
The OMD-24 is the basic version of the OMD-24 Series. It is equipped with a Clean Water
Handle and a Sample Handle to switch from sample stream to clean water.
1.2 OMD-24 EV
The OMD-24 EV is designed with an Electric Switchover Valve to switch the instrument
from sample stream to supply of clean, oil free water. The instrument will switch over to
alarm condition, but will also continue to display the measurement result. The Electric
Switchover Valve also allows remote flushing.
1.3 OMD-24 EVA
The OMD-24 EVA is fitted with an Electric Switchover Valve and an Automatic Cell
Cleaning Device.
1.4 OMD-24 A
The OMD-24 A is prepared with an Automatic Cell Cleaning Device for Auto Clean
operation.

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HAMBURG
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2. Important Notes
a) This equipment must be installed and operated in strict accordance with the
instructions contained in this instruction manual. Failure to do so will impair the
protection provided.
b) Installation and servicing must be undertaken by a competent and suitably skilled
person.
c) The equipment must be connected to the ground according relevant requirements.
d) The unit must be isolated from the electrical supply before any maintenance of the
equipment is attempted.
e) All national or local codes of practice or regulations must be verifying and, where
applicable, are deemed to take precedence over any directive or information
contained in this instruction manual.
f) In case of freezing conditions, the Measuring Cell should be emptied completely.
Some components mentioned in this instruction manual may not be present on the
instrument on site, and/or the instrument may have additional components.
g) Technical specifications are subject to change without notification.
h) If uncertain how to proceed, contact the maker.

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3. Principle of operation
3.1 Measuring Principle
An optical sensor array measures a combination of light scattered and absorbed by oil
droplets in the sample stream. The sensor signals are processed by a microprocessor to
produce linearized output.
If an alarm (set point form 1 ppm to 15 ppm) occurs, the two oil alarm relays are activated
after the adjusted time delay.
The microprocessor continuously monitors the condition of the sensor components and
associated electronics to ensure that calibration accuracy is maintained over time and
extremes of environmental conditions.
3.2 Display Visualization
The display visualizes the oil content status of the units. Using the buttons, it is also
possible to see information about the settings.
3.3 Alarms
The units contain two independent oil alarm circuits. From the manufacturing both alarms
are set to 15 ppm (according IMO). The set points can be changed according to the
requirements on site, to any point between 1 ppm and 15 ppm. An alarm point setting
above 15 ppm is not possible. The adjustment can be done in the programming mode as
described in the appendix (See section 21.2.3 Functional Buttons AL1/ AL2/ SET).
Both alarm circuits are also related to an alarm LED on the front panel.
Additional to the alarm LEDs each alarm circuit is equipped with a relay with potential
free alarm contacts. These contacts can be used for external processing of the signal or
for control of further functions. The alarm circuits contain two independent alarm delays,
which can be set separately.
In case of malfunction the “SYS LED”will indicate some type of internal fault of the unit.
This LED is flashing green in normal conditions and is red in alarm conditions.
If a malfunction or failure of the power supply occurs, relays (both alarm relays) will switch
to alarm condition. (See Section 22. Appendix III. for an easily understandable example).
If the unit is off, both relays will be in alarm condition.

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3.4 Adjustment
The unit is delivered with a works calibration according the IMO requirements. A
customer calibration on board is not permitted. This has to be done according IMO
Regulations by the manufacturer or persons authorized by the manufacturer.
The units are staffed by two independent oil alarm circuits, Alarm 1 and Alarm 2. The
alarm set points can be changed between 1 ppm and 15 ppm.
The units contain two alarm delays. Alarm 1 is to be used for signing purpose and the
delay can be set from 1 sec. to 9 min. Alarm 2 is limited to control overboard discharge.
The Alarm 2 delay can be set from 1 sec. to 10 sec. max.
The "Zero" point is also works calibrated and is adjustable to ± 5 ppm.
On site by using the programming mode (See Section 21.2.3 Functional Buttons
AL1/ AL2/ SET ) and clean water you can adjust following points:
Settings
Min.
Max.
Default.
Alarm 1/ Alarm 2
1 ppm
15 ppm
15 ppm
Delay 1
1 sec.
9 min.
2 sec.
Delay 2
1 sec.
10 sec.
10 sec.
Offset
-5 ppm
5 ppm
0 ppm
3.4.1 Limited Adjustment Alarm Set Point
By request units with alarm set point of 5 ppm max. are available. (For more information,
read section 17. OMD-24 Series with 5 ppm Alarm Set Point).
3.5 Active Current Interface
The active current interface represents a combination of measurements and
interpretations. The active current interface is adjustable to 0 to 20 mA or to 4 to 20 mA.
This complies with the oil content from 0 to 30 ppm. In case of malfunction e.g. EE means
20 mA.
The maximum open-load voltage is about 5 V and it is strongly recommended not to
burden 150 Ω external load.

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3.6 Inputs
The unit also has four active inputs, which can be used separately as well.
a) Separator Input is dedicated to be used according the MEPC.107 (49).
b) Reserve Input reserved for future use.
c) Optionally there is an active input for external flow switch (FLOW). The Unit will
be in alarm condition, whenever Terminals are opened/ disconnected. Normally
this input is delivered with a link.
d) An Input for fresh water switchover for units with an Electric Valve is available.
3.7 EV (Electric clean water Valve)
The OMD-24 EV is designed with an Electric Switchover Valve to switch the instrument
from the sample stream to supply of clean, oil free water. Whenever fresh water is
allowed to flow to the Measuring Cell, the OMD-24 EV will switch over to alarm condition
as required by MEPC.107(49), and it will also continue to display the measurement result.
The OMD-24 EV setup replaces the manual valve setup for the standard OMD-24, and also
allows remote flushing.
3.8 Automatic Cell Cleaning Device
The Automatic Cell Cleaning Device is a useful addition to the OMD range of monitoring
equipment. It was developed in order to ease the task of routine cleaning as described in
the manuals and to ensure that the measuring system of the monitoring equipment is
kept in good working order.
Auto Clean System provides a truly automatic cleaning device which is designed to run
only when the system is on. The Auto Clean System consists of:
a) Cylinder/ piston assembly for physical cleaning of the sample cell.
b) Air Regulation Filter Unit (different makes and types may be used).
c) Auto Clean logic control with valve. It determines the frequency of the cleaning
cycles.
i
The Automatic Cell Cleaning Device does not replace the operator maintenance
schedule but can reduce the maintenance workload.

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3.9 MCU (Manual Cleaning Unit)
Optionally the instruments can be fitted with a Manual Cleaning Unit. The Manual
Cleaning Unit allows to clean the Sample Glass Tube without opening the Cell Cap, and
without interrupting the normal sample flow. Maintenance is made easier with the MCU.
Please note that operating the MCU may set the instrument to alarm condition for a few
seconds.
3.10 Features
OMD-24
Series Features
OMD-24
OMD-24
EV
OMD-24
EVA
OMD-24
A
MEPC.107(49).




Quick Alarm Inspection




Solid suppression capability




Low maintenance




Easy installation




Constant readiness




Low spare part stock holding




Easy settings via menu




Works adjustment




Electric Valve




FW Remote Control




Auto Clean System




MCU (optional)




Robust Construction





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4. Specification
The OMD-Series are certified according MEPC.107(49). Please take notice on the
individual specifications listed below.

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4.1 Specification OMD-24
Range:
0 –30 ppm, Trend indication 50 ppm
Accuracy:
According IMO MEPC. 107(49)
Linearity:
0 –30 ppm better than ± 2 %
Display:
Yellow Graphic Display
Power Supply:
24 V AC or DC +/- 10%
Consumption:
< 5 VA
Alarm Points 1 + 2:
Adjustable between 1 –15 ppm*
(Works adjustment 15 ppm)
Alarm 1 Operating Delay:
(for annunciation purpose)
Adjustable between 1 –540 sec.
(Works adjustment 2 sec.)
Alarm 2 Operating Delay:
(for control purposes)
Adjustable between 1 –10 sec.
(Works adjustment 10 sec.)
Alarm Indication:
(Alarm 1, 2, System Fault)
Red LEDs
Alarm Contact Rating:
(Alarm 1, 2)
Potential free 1 pole change over contacts,
3 A / 240 V.
Output Signal:
0 –20 mA or 4 –20 mA selectable, active
current loop, ext. Load < 150 
Sample/ Fresh Water pressure:
< 10 bar
Sample Flow:
Approx. 2 l/min
Sample Water Temperature:
+1 to +65 °C
Ambient Temperature:
+1 to +55 °C
Roll:
Up to 45°
Size:
Computer Unit
Measuring Cell Assembly
185 mm W x 210 mm H x 65 mm D
140 mm W x 160 mm H x 65 mm D
Distance Computer Unit to
Measuring Cell:
Up to 0.5 m
Option: up to 5m upon request
Weight: (with Measuring Cell)
3 Kg
Degree of Protection:
IP 65
Pipe connections:
R ¼" Female
Technical specifications are subject to change without notification.
*By request the alarm set point can be set to 5 ppm max.
*
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4.2 Specification OMD-24 EV
Range:
0 –30 ppm, Trend indication 50 ppm
Accuracy:
According IMO MEPC. 107(49)
Linearity:
0 –30 ppm better than ± 2 %
Display:
Yellow Graphic Display
Power Supply:
24 V AC or DC ± 10 %
Consumption:
< 15 VA
Alarm Points 1 + 2:
Adjustable between 1 –15 ppm*
(Works adjustment 15 ppm)
Alarm 1 Operating Delay:
(for annunciation purpose)
Adjustable between 1 –540 sec.
(Works adjustment 2 sec.)
Alarm 2 Operating Delay:
(for control purposes)
Adjustable between 1 –10 sec.
(Works adjustment 10 sec.)
Alarm Indication:
(Alarm 1, 2, System Fault)
Red LEDs
Alarm Contact Rating:
(Alarm 1, 2)
Potential free 1 pole change over contacts,
3 A / 240 V
Output Signal:
0 –20 mA or 4 –20 mA selectable, active
current loop, ext. Load < 150 
Sample/ Fresh Water Pressure:
<6 bar
Sample Flow:
Approx. 2 l/min
Sample Water Temperature:
+ 1 to + 65° C
Ambient Temperature:
+ 1 to + 55° C
Roll:
Up to 45°
Size:
Computer Unit
Measuring Cell
185 mm W x 210 mm H x 65 mm D
140 mm W x 160 mm H x 120 mm D
Distance (Computer Unit to
Measuring Cell)
Up to 0.5 m
Option: up to 5m upon request
Weight:
3.6 Kg
Degree of Protection:
IP 65
Pipe Connections:
R ¼" Female
Technical specifications are subject to change without notification.
* By request the alarm set point can be set to 5 ppm max.

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Page: 16
4.3 Specification OMD-24 EVA
Range:
0 –30 ppm, Trend indication 50 ppm
Accuracy:
According IMO MEPC. 107(49)
Linearity:
0 –30 ppm better than ± 2 %
Display:
Yellow Graphic Display
Power Supply:
24 V AC or DC ± 10 %
Consumption:
< 15 VA
Alarm Points 1 + 2:
Adjustable between 1 –15 ppm*
(Works adjustment 15 ppm)
Alarm 1 Operating Delay:
(for annunciation purpose)
Adjustable between 1 –540 sec.
(Works adjustment 2 sec.)
Alarm 2 Operating Delay:
(for control purposes)
Adjustable between 1 –10 sec.
(Works adjustment 10 sec.)
Alarm Indication:
(Alarm 1, 2, System Fault)
Red LEDs
Alarm Contact Rating:
(Alarm 1, 2)
Potential free 1 pole change over contacts,
3 A / 240 V
Output Signal:
0 –20 mA or 4 –20 mA selectable, active
current loop, ext. Load < 150 
Sample/ Fresh Water Pressure:
< 6 bar
Sample Flow:
Approx. 2 l/min
Sample Water Temperature:
+ 1 to + 65° C
Ambient Temperature:
+ 1 to + 55° C
Roll:
Up to 45°
Size:
Computer Unit
Automatic Cleaning Device
Measuring Cell
185 mm W x 210 mm H x 65 mm D
140 mm W x 240 mm H x 120 mm D
140 mm W x 215 mm H x 120 mm D
Distance Computer Unit to
Measuring Cell:
Up to 0.5 m
Option: up to 5m upon request
Weight:
4 Kg
Degree of Protection:
IP 65
Air Supply
4 –6 bar
Air Pressure Regulator
Typical 4 bar
Pipe Connections: Air, Water
R ¼" Female
Technical specifications are subject to change without notification.
*By request the alarm set point can be set to 5 ppm max.

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Page: 17
4.4 Specification OMD-24 A
Range:
0 –30 ppm, Trend indication 50 ppm
Accuracy:
According IMO MEPC. 107(49)
Linearity:
0 –30 ppm better than ± 2 %
Display:
Yellow Graphic Display
Power Supply:
24 V AC or DC ± 10 %
Consumption:
< 5 VA
Alarm Points 1 + 2:
Adjustable between 1 –15 ppm*
(Works adjustment 15 ppm)
Alarm 1 Operating Delay:
(for annunciation purpose)
Adjustable between 1 –540 sec.
(Works adjustment 2 sec.)
Alarm 2 Operating Delay:
(for control purposes)
Adjustable between 1 –10 sec.
(Works adjustment 10 sec.)
Alarm Indication:
(Alarm 1, 2, System Fault)
Red LEDs
Alarm Contact Rating:
(Alarm 1, 2)
Potential free 1 pole change over contacts,
3 A / 240 V
Output Signal:
0 –20 mA or 4 –20 mA selectable, active
current loop, ext. Load < 150 
Sample/ Fresh Water Pressure:
< 6 bar
Sample Flow:
Approx. 2 l/min
Sample Water Temperature:
+ 1 to + 65° C
Ambient Temperature:
+ 1 to + 55° C
Roll:
Up to 45°
Size:
Computer Unit
Automatic Cleaning Device
Measuring Cell
185 mm W x 210 mm H x 65 mm D
140 mm W x 240 mm H x 120 mm D
140 mm W x 225 mm H x 65 mm D
Distance Computer Unit to
Measuring Cell:
Up to 0.5 m
Option: up to 5m upon request
Weight:
3.5 Kg
Degree of Protection:
IP 65
Pipe Connections:
R ¼" Female
Technical specifications are subject to change without notification.
*By request the alarm set point can be set to 5 ppm max.

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Page: 18
5. Construction
OMD-24 Series generally consist of a Computer Unit, a Measuring Cell, and further
equipment (e.g. Valve Assembly, EV Valve, and Automatic Cell Cleaning Device).
The Computer Unit contains the display PCB with the data logger and the terminals for
external connections.
The Measuring Cell is built out of an anodized all-aluminium body with inlet and outlet
block made from stainless steel. This rugged cell contains optics and electronics and is
connected with the Computer Unit via a plugged data cable. Measuring Cell is mounted
onto a valve support, which holds the valve assembly, too. Sample water flow and clean
water usage are controlled by an electric switchover valve. This assembly is connected to
the measuring cell by a push-in connector.
The Measuring Cell should be positioned vertical.
All OMD-24 units can be mounted on wall or as bulkhead installation. It is also possible to
split the computer unit from the measuring cell if the available space is not sufficient.
Optionally a connection cable for up to 5mdistance from Computer Unit to Measuring
Cell is available.
Listed below there are more details about each specific Unit.

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5.1 Construction OMD-24
The OMD-24 consists of a Computer Unit and a Measuring Cell, which is equipped with
two handles, which control sample water flow and clean water usage. This assembly is
connected to the measuring cell by a push-in.
Figure 1. Construction OMD-24
1.
Computer Unit
5.
Clean Water Handle
9.
Desiccator Cap
2.
Measuring Cell
6.
Sample Handle
10.
Communication Cable
3.
Sample Valve
7.
Cell Cap
11.
Terminal Cover
4.
Clean Water Valve
8.
Valve Support