GESTRA OR 52-7 Manuale utente
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Installation Instructions 818788-01
Oil & Turbidity Detector
OR 52-7
GESTRA Steam Systems
OR 52-7 EN
English
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Contents
Important Notes
Usage for the intended purpose ..............................................................................................................4
Safety note .............................................................................................................................................4
Danger ...................................................................................................................................................4
Explanatory Notes
Scope of supply ...................................................................................................................................... 5
Description .............................................................................................................................................5
Function .................................................................................................................................................5
Page
Functional Elements
Measuring sensor ORG 12 .................................................................................................................... 14
Measuring sensor ORG 12 / Measuring transducer ORT 7 ..................................................................... 15
Measuring transducer ORT 7.................................................................................................................16
Key.......................................................................................................................................................17
Commissioning
Factory settings ....................................................................................................................................18
Warning................................................................................................................................................ 18
Checking electrical connection .............................................................................................................18
Checking installation.............................................................................................................................18
First commissioning ............................................................................................................................. 19
Programming mode ..............................................................................................................................20
Other parameter settings ......................................................................................................................21
Technical Data
Measuring sensor ORG 12 ..................................................................................................................... 6
Measuring transducer ORT 7...................................................................................................................7
Name plate / Marking ............................................................................................................................. 8
Dimensions OR 52-7............................................................................................................................... 9
Installation
OR 52-7................................................................................................................................................10
Example of Installation.......................................................................................................................... 11
Electrical Connection
Measuring transducer ORT 7 ................................................................................................................12
Note .....................................................................................................................................................12
Attention............................................................................................................................................... 12
Tools.....................................................................................................................................................12
Wiring diagram OR 52-7 .......................................................................................................................13
Notice ..................................................................................................................................................13
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Contents – continued –
Malfunctions
OR 52-7................................................................................................................................................26
Table listing error codes.......................................................................................................................26
Page
Data storage
Memory Card........................................................................................................................................24
Note .....................................................................................................................................................24
Data indication .....................................................................................................................................24
Operating steps - see Fig. 9 .................................................................................................................24
Note .....................................................................................................................................................25
Operation flowchart ..............................................................................................................................25
Start, Operation, Alarm and Functional Test
Start and operation ...............................................................................................................................22
Alarm 1 and 2 ......................................................................................................................................23
Fucntional test .....................................................................................................................................23
Maintenance
Cleaning the glass cylinder .................................................................................................................. 27
Replacing the drying cartridge ..............................................................................................................27
Replacing the light emitter/receiver ......................................................................................................27
Replacing the equipment fuse .............................................................................................................. 27
Replacing glass cylinder .......................................................................................................................28
Replacing the plunger of the cleaning device ........................................................................................ 28
Spare Parts
Spare parts kit ..................................................................................................................................... 30
5 years inspection package ..................................................................................................................30
Checking the Accuracy of Measurement
OR 52-7................................................................................................................................................29
Annex
Type approval certificate...............................................................................................................32 – 35
EC Prototype Test Certificate (module B)..........................................................................................36, 37
EC Type Examination (Module B) Certificate .................................................................................... 38, 39
Declaration of Conformity .....................................................................................................................40
Decommissioning
Warning................................................................................................................................................ 31
Dismantling ..........................................................................................................................................31
Disposal................................................................................................................................................31
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Important Notes
Usage for the intended purpose
The oil & turbidity detector OR 52-7 is designed for the continuous monitoring and detection of ingress
of oil in water and is used in conjunction with oily water separators as 15 ppm bilge alarm.
The equipment meets the requirements of the International Maritime Organization (IMO) for bilge alarm
monitors, MEPC. 107 (49).
Danger
The coil of the solenoid valve Clw can reach up to 80 °C during continuous operation!
The terminal strips of the measuring transducer ORT 7 can be live during operation!
This presents the risk of severe cases of electric shock!
Always cut off power supply to the equipment before mounting, removing or connecting
the terminal strips!
Safety note
The equipment must only be installed and commissioned by qualified and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who – through adequate
training – have achieved a recognised level of competence.
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Explanatory Notes
Scope of supply
Measuring transducer ORT 7
Measuring sensor ORG 12 with
1 Solenoid valve
1 Drying cartridge (fitted)
1 Throttle (supplied but not fitted)
1 Accessory box: Content: 1 incandescent lamp (= light emitter)
1 Installation manual
Description
The oil & turbidity detector OR 52-7 can be used:
n On board of marine vessels for monitoring the oily water separating equipment for bilge water
according to IMO Resolution MEPC. 107 (49) as 15 ppm oil content alarm.
Function
The measuring sensor is a photometric measuring device consisting of a light source (light emitter)
and a light receiver fitted with two photosensitive elements.
The constant light beam generated in the measuring sensor passes through the transparent liquid. Any
foreign matter which is not dissolved scatters the beam, with emulsified oils scattering the light mainly
in the forward direction. The intensity of the scattered light is converted into an electric current and then
used as measure of the degree of contamination.
The measuring transducer has the following functions:
nControl of the measuring sensor and signal evaluation,
nControl of the purging valve,
nIndication of limit ALARM 1 and ALARM 2,
nAnalog actual value output 0/4-20 mA,
nIndication of malfunctions in measuring sensor and via ALARM 2,
nIndication of actual value and limits,
nStorage and indication of alarm, malfunction and status messages,
nControl of the bilge bypass via output ALARM 2.
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Technical Data
Measuring sensor ORG 12
Nominal size
DN 10, connections G 3/8ISO 228
Nominal pressure
PN 10
Fluid
Water
pH value
Up to 10.5 (a pH value of 11 and above will lead to wear of the glass, depending on the temperature).
Fluid temperature range
0 ... 60 °C (with drying cartridge)
Ambient temperature
Max. 60 °C
Materials
Measuring sensor ORG 12
Cover 0.6025 galvanized
Wetted parts 0.6025 galvanized
Throttle 1.4571
Screwed union St
Glass cylinder Duran 50
Internal seals: Silicone
Oil-seal rings Perbunan
Body 0.6025 galvanised
Cleaning ring EPDM sponge rubber
Light emitter
Incandescent lamp
Electrical connection via 4 m connecting cable fitted with four pole connector
Protection IP 65
Light receiver
Two silicon photoelectric cells
Electrical connection via 4 m connecting cable fitted with four pole connector
Protection IP 65
Purging valve
2/2 way solenoid valve
Directly controller, normally closed type
Connection G 3/8ISO 228
Valve body Brass
Internals Ms 2.0401 / S. S. 1.4104
Internal seal FKM
Solenoid Voltage 24 V / 50 Hz, 43/24 VA
Electrical connection via 4 m connecting cable fitted with four pole connector
Protection IP 65
Weight
ORG 12 approx. 6.8 kg
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Technical Data - continued -
Measuring transducer ORT 7
Inputs / Outputs
2 Photocells for inputs: directly transmitted light / scattered light
1 Voltage output for light emitter, 1 - 12 V pulse-amplitude modulated
1 Signal input for separator ON/OFF
1 GPS input RS 485, 4800 baud, NMEA 183 protocol, data record: GPRMC (optional)
3 Volt-free relay contacts for alarm 1, 2 and purging valve (Clw)
Contact material AgNi 0,15
Max. contact rating for switching voltages 24 V AC/DC, 115 V AC and 230 V AC: resistive / inductive 4 A
1 Current output 0/4-20 mA as actual value output, max. load 500 ohm.
Indicators and adjustors
1 LCD display for indicating the actual value, limits, status and malfunction
8 Membrane keys
4 LEDs for indicating alarm, status and malfunction
3 green LEDs on basic circuit board for monitoring the operating voltages.
Data storage
DataFlashcard 8 MB
Measuring range
0-25 ppm (ppm = parts per million).
Actual value output
0 or 4 mA = 0 ppm; 20 mA ≥ 25 ppm.
Limits for alarm 1 and 2, adjustment range
adjustable between 0 and 15 ppm.
Delay of response for alarm 1 and 2, adjustment range
adjustable between 0 and 15 sec.
Mains voltage
24 V +10 /– 15 %, 50 – 60 Hz
230 V +10 /– 15 %, 50 – 60 Hz (optional)
115 V +10 /– 15 %, 50 – 60 Hz (optional)
Power consumption
50 VA
Fuse
24 V: Thermal fuse M 1.6 A 5 x 20
230 V: Thermal fuse M 0.2 A 5 x 20
115 V: Thermal fuse M 0.4 A 5 x 20
Body
Field case for wall mounting
Housing material: die-cast aluminium
Cable gland / Electrical connection
8 Cable glands with integrated cable clamps M 16 x 1.5
3 Three-pole screw-type terminal strips, conductor size 0.75 mm2
8 Multi-pole screw-type terminal strips. detachable, conductor size 1.5 mm2
Protection
IP 65 to DIN EN 60529
Admissible ambient temperature
0 – 55 °C
Weight
approx. 3.6 kg
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Technical Data – continued –
Name plate / Marking
Fig. 1
Equipment designation
Manufacturer
Type designation
MED marking
Electrical specification, protection
Disposal note
Measuring range
Safety note
Serial number
Material number
Ambient temperature
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Technical Data – continued –
Dimensions OR 52-7
Measuring sensor ORG 12
Measuring transducer ORT 7
Fig. 2
approx. 200 approx. 170
approx. 225
240
260
110
160
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Installation
OR 52-7
Use the support to install the measuring sensor ORG 12 as close as possible to the separator in order
to keep the supply delay to a minimum. According to MEPC. 107 (49) in the event of an alarm
(oil content > / = 15 ppm) the contaminated water must be diverted from the separator to the bilge as
quickly as possible, i. e. within no more than 20 seconds.
Use a 10x1 mm copper or stainless steel pipe to connect the measuring sensor ORG 12 with the
sampling point of the separator and the clear water supply. The sampling point should be provided in
a vertical section of the separator outlet pipe so as to avoid any impairment caused by air bubbles. In
order to ensure that the arrangement for the extraction of samples gives a truly representative sample
make sure that the fluid flow always passes through the sensor under all operating conditions and
that any by-passing of the oil separator is prevented.
If it is not possible to provide the sampling point in a vertical pipe, a lateral arrangement in a horizontal
pipe is also possible.
For overboard pipes with an outside diameter of up to 75 mm a tee piece for the extraction of samples
can be used. if the size of the pipe exceeds 80 mm, make sure that the sampling arrangement ex-
tends approx. 25 % into the overboard line.
Install the vacuum breaker above the highest point of the oil separator.
Attach the measuring transducer ORT to a stable vertical surface.+ If possible, mount the indicator at
eye level for easy viewing and provide sufficient withdrawal space for servicing and maintenance.
The measuring transducer is designed for wall mounting. The distances between the fixing holes are
indicated on the back of the equipment.
To access the fixing holes undo the cover screws and open the cover.
Indice
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