Figure 1. Dosaodor DO200 Injection Panel and Control Panel
Only qualied and instructed personnel can
install and handle the odorant tank.
The odorizing system must be installed,
operated and maintained in accordance to all
applicable rules and standards.
Follow the instructions, especially the ones
relevant to “pressure risk”.
The installation, operation and maintenance
procedures, if not performed by qualied
personnel, can be dangerous.
These circumstances can lead to damage
to the devices, injuries to people or damage
to properties due to gas or liquid leakage.
If there is a leak in the system, the released
gas can accumulate and provoke res
or explosions.
Dosaodor DO200
WARNING
!
Dosaodor DO200
Explosions of parts under pressure can
occur if the system is installed where its
operating conditions (PS and TS) can be
exceeded or where service conditions can
exceed the limits of the piping or
its connections.
Call immediately qualied service personnel
in case of any issue.
In order to avoid these conditions, install the
device in a safe place, where it is protected
to the exposure to damage and/or corrosive
substances, and where operating conditions
are within the limits of the device
(the product cannot be exposed to operating
conditions different from what it has been
designed for).
Do not exceed the pressure nominal values
of the single components of the system.
INTRODUCTION
Scope of the Manual
This manual provides installation, start-up and maintenance
instructions for the Dosaodor DO200 odorant injection
system. Information on the other equipment used with
DO200 is found in separate manuals.
PRODUCT DESCRIPTION
The Dosaodor DO200 is a Smart odorant system for natural
gas, that injects odorant proportional to the ow rate of
the gas in transit. The Dosaodor DO200 is completely
congurable and can interface with remote monitor and
control system.
The system can be congured to use redundant injectors
and/or emergency absorption system.
The equipment consists of a injection panel to be installed in
the hazardous area and a control panel to be installed in the
safe area, interconnected by electric cables.
Benets:
• Operational safety
• Extreme reliability
• Very low maintenance
• Ease of use
• Results certainty
The system does not us any dosing pumps to inject the
odorant liquid in the downstream pipelines, it uses the
natural gas differential pressure, which is always present
between the upstream and downstream sections of a
reduction and metering gas station (minimum 1 bar) and
an electrically controlled panel unit certify according to
the ATEX international directive. In case 1 bar differential
pressure is not present, it can be used methane or nitrogen
cylinder pack to inject the odorant liquid downstream.
The injection panel is made of stainless steel, without a
painted nish, or screen printing as odorizing liquids
are aggressive.
Before any scheduled or unplanned maintenance, the
system can be cleaned from odorant by performing a simple
procedure that push the odorant inside the injection panel
into the main odorant tank.
This allows the operator to perform the maintenance in an
easier and safer way.
A pressure differential level transmitter measures in real time
the quantity of liquid injected into the pipe, while the control
panel automatically adjust the dosing rate depending on the
odorant quantity injected, measured by the level transmitter,
compared to the instant natural gas ow rate (measured
by a ow meter, or sent by a ow computer).ensuring great
system reliability and overall accuracy.
The same differential pressure transmitter measures in
real time the odorant level from the main tank, allowing an
easily planning of the rell activities, providing the necessary
information for the relling of the tank.
Optionally the injection panel can be equipped with two
injection valves, one for high (H) and one for low (L) ow
rates.
The system can automatically switches between the injector
valves based on the programmed data and current ow rate.
The system ensures the dosing rate while keeping the
desired odorant concentration level steady with over the
entire ow range of the system, even when the ow is
extremely variable and extremely low.
This particular feature guarantees high safety within the
sphere of the natural gas distribution for public use. In fact,
by maintaining a constant level of odorant concentration not
matter what the gas ow rate, any leakage of gas can clearly
be identied reducing the possibility of accidents.
In addition to this, recorded reports of the gas volumes, and
the quantity of odorant emitted, allow gas grid operators the
data for conrming the correct operation of the gas systems.
2
In the event of malfunctioning or power outages, the control
panel saves the programming data by means of a buffer
battery and sends out a signal to activate any emergency
devices (it normally restarts operation of the absorption-type
emergency system).
The Dosaodor DO200 complies to UNI-CIG 9463.
Dosaodor DO200
Absorption System
The absorption type backup system is constituted by a
pneumatic valve actioned by a solenoid valve, both installed
on the piping spool between the odorant tank and the main
gas line, downstream the ΔP valve.
When the absorption system is activated, the pneumatic
valve actioned by the solenoid valve opens ensuring gas
ow through the tank, due to the differential pressure created
on the gas main line by a dedicated valve (buttery or ball
valve depending on the operating pressures of the
reducing station).
The gas, being in contact with the surface of the odorant
liquid inside the tank, gets soaked with the same liquid,
going back to the main line properly odorized.
The regulation of the gas ow is performed through the
needle valve installed on the tank.
The setting of the absorption system is xed; it is therefore
necessary to modify it in case of a change in the
operating conditions.
The absorption system tank is also used as service tank
for the main injection system, ensuring, during normal
functioning, the feeding of liquid to the injection panel.
The following accessories are installed on the tank:
• Level indicator
• Inlet needle valve
• Outlet valve
• Odorant loading valve
• Tank pressure gauge
• Liquid feeding assembly to the injection panel
• Collection basin
Double Injection System
As emergency system, instead of the absorption system, a
second Dosaodor DO200 can be foreseen.
The system Injection + Injection works exactly like the
system Injection + Absorption type; in this case the backup
is ensured by the second Dosaodor DO200.
In this conguration, instead of one injection panel, two
identical ones (Master / Slave) will be installed. In case of
malfunctioning of the main panel, the second one will be
activated and will work in the same way.
The selection between Master or Slave system is done
through a dedicated switch.
Both systems will have dedicated power feeding and
auxiliary batteries pack (optional).
Cabinet material / Protection degree Resin / IP55
Installation Wall
Power Requirements 24 Vdc 100-240 Vac 50/60 Hz
Consumption 120 W @ 24 Vdc
Electromagnetic interferences Compliant to 89/336/CE
Operating temperature 0 +40 °C
Humidity 10% - 90% not condensate
Installation site Safe Area (not classified)
Dimensions 640 x 430 x 250 mm (h x l x p)
Input signals
Level measurement Analog 4 – 20 mA (Exd)
Instant analog flow rate from Flow Computer
(or from flow meter) Analog 4 – 20 mA
Instant pulse flow rate from Flow Computer
(or from flow meter) Pulse
Cylinders pressure measurement (optional) Analog 4 – 20 mA (Exd)
1 RS485 port with terminal unit
1 RS485 RJ11 port
1 Ethernet RJ11 port
Display
7” Touchscreen
Password Default/programmable
Operating mode
Automatic - Excluded
Remote communication
Gateway 3G - 4G (optional)
Communication protocol
MODBUS RTU/TCP
Remote control software
Integrated web server
4
Dosaodor DO200
Injection Panel
Material Stainless Steel
Liquid odorants THT/Mercaptans
Installation Wall or floor (optional)
Maximum feeding pressure 100 barg
Working Temperature -10 +60 °C
Dimensions 1030 x 500 x 300 mm (h x l x p)
Weight 30 kg
Sampling cylinder characteristics (optional)
Refer to Emerson ofces for proper application. The sampling cylinder tank will be delivered already installed in the Dosaodor
DO200 injection panel. The injection panel has been designed to hold sampling cylinder tank weight.
WARNING
!
Maximum allowable Pressure (PS) 100 bar
Maximum working pressure 100 bar
Body material: Stainless steel
Connections 1/4” NPT-F
Solenoid valves characteristics
Maximum working pressure 100 bar
Maximum differential pressure 19 bar
Body material Stainless steel
Gasket material FKM - FFKM
Valve operation Electromagnetic
Power Supply 24 Vdc
SA/2 Pressure stabilizer characteristics
Maximum working pressure (PS) 100 bar
Body material Steel
Gasket material NBR rubber
For the operation and maintenance of the pressure stabilizer type SA/2 please see the Instruction Manual D103653X012.
5
Dosaodor DO200
INJECTION PANEL WITH SINGLE INJECTOR WITH SAMPLING TUBE
Key Description
B Sampling tube
C1 Multipolar cable inlet
dPT Pressure differential level transmitter
EV1 Loading solenoid valve
EV3 Dosing solenoid valve
EV4 Pressurization solenoid valve
PI Pressure gauge
R1 Pressure reducer I° stage
R2 Pressure reducer II° stage
S Junction box
T1 Gas inlet pressure
T2 Reference/unloading pressure
T3 Level transmitter calibration intake
T4 Odorant liquid loading intake
T5 Odorant liquid injection intake
C1
V5
T1
T2
T5
V3
SB
T3
V4
R1
PI
R2
EV4
V1 Valve cell L
V2 Valve cell H
V3 Injection isolation valve
V4 Pipe isolation valve
V5 Upstream pressure intake isolation valve
VR Check valve
Figure 2. List of Main Components of the Injection Panel with Single Injector with Sampling Tube
EV3
dPT
VR
T4
EV1V2T3V1
6
Dosaodor DO200
INJECTION PANEL WITH SINGLE INJECTOR WITH SAMPLING CYLINDER
Key Description
B Sampling cylinder
C1 Multipolar cable inlet
dPT Pressure differential level transmitter
EV1 Loading solenoid valve
EV3 Dosing solenoid valve
EV4 Pressurization solenoid valve
PI Pressure gauge
R1 Pressure reducer I° stage
R2 Pressure reducer II° stage
S Junction box
T1 Gas inlet pressure
T2 Reference/unloading pressure
T3 Level transmitter calibration intake
T4 Odorant liquid loading intake
T5 Odorant liquid injection intake
C1
V5
T1
T2
T5
V3
S
B
T3
V4
R1
PI
R2
EV4
V1 Valve cell L
V2 Valve cell H
V3 Injection isolation valve
V4 Pipe isolation valve
V5 Upstream pressure intake isolation valve
VR Check valve
Figure 3. List of Main Components of the Injection Panel with Single Injector with Sampling Cylinder
EV3
dPT
VR
T4
EV1V2T3V1
7
Dosaodor DO200
INJECTION PANEL WITH DOUBLE INJECTOR WITH SAMPLING TUBE
Key Description
B Sampling tube
C1 Multipolar cable inlet
dPT Pressure differential level transmitter
EV1 Loading solenoid valve
EV2 Low dosing solenoid valve
EV3 High dosing solenoid valve
EV4 Pressurization solenoid valve
PI Pressure gauge
R1 Pressure reducer I° stage
R2 Pressure reducer II° stage
S Junction box
T1 Gas inlet pressure
T2 Reference/unloading pressure
T3 Level transmitter calibration intake
T4 Odorant liquid loading intake
C1
V5
T1
T2
T5
V3
SB
T3
V4
R1
PI
R2
EV4
T5 Odorant liquid injection intake
V1 Valve cell L
V2 Valve cell H
V3 Injection isolation valve
V4 Pipe isolation valve
V5 Upstream pressure intake isolation valve
VM Micrometric valve
VR Check valve
Figure 4. List of Main Components of the Injection Panel with Double Injector with Sampling Tube
EV3
VM
EV2
dPT
VR
T4
EV1V2T3V1
8
Dosaodor DO200
INJECTION PANEL WITH DOUBLE INJECTOR WITH SAMPLING CYLINDER
Key Description
B Sampling cylinder
C1 Multipolar cable inlet
dPT Pressure differential level transmitter
EV1 Loading solenoid valve
EV2 Low dosing solenoid valve
EV3 High dosing solenoid valve
EV4 Pressurization solenoid valve
PI Pressure gauge
R1 Pressure reducer I° stage
R2 Pressure reducer II° stage
S Junction box
T1 Gas inlet pressure
T2 Reference/unloading pressure
T3 Level transmitter calibration intake
T4 Odorant liquid loading intake
C1
V5
T1
T2
T5
V3
S
B
T3
V4
R1
PI
R2
EV4
T5 Odorant liquid injection intake
V1 Valve cell L
V2 Valve cell H
V3 Injection isolation valve
V4 Pipe isolation valve
V5 Upstream pressure intake isolation valve
VM Micrometric valve
VR Check valve
Figure 5. List of Main Components of the Injection Panel with Double Injector with Sampling Cylinder
EV3
VM
EV2
dPT
VR
T4
EV1V2T3V1
9
Dosaodor DO200
CONTROL PANEL
PANEL DOOR LOCK
MAIN SWITCH
HMI
PANEL DOOR LOCK
ELECTRICAL POWER
SUPPLY LAMP
INTERFACE RELAYSSWITCH ETHERNET
POWER SUPPLY FUSES
MAIN SWITCH
PLC
POWER SUPPLY
TERMINAL UNIT
SOLENOID VALVES FUSES
Figure 6. Control panel Main Parts
10
Dosaodor DO200
ATEX REQUIREMENTS
According to the following documents:
• I-N97 CEN/SFG-I “ATEX-Guidance Sheet (ATEX
Guideline of Sector Forum Gas - Infrastructure)”
• FAREGAZ Position on ATEX Topics,
The Dosaodor DO200 injection system is classied as
“Installation” according to chapt. 5.2.2 of “ATEX Guide Lines
4.a Edition - September 2012”, therefore it’s not included in
Directive 2014/34/UE (ATEX I).
ATEX devices that are included in Dosaodor DO200 system
must be Ex-certied.
Dosaodor DO200 system must comply to Directive 1999/92/EC
(ATEX ll) and the other applicable National standards.
Odorizing systems (absorption and/or injection types) are
designed as independent installations or as part of pressure
reducing stations (ref.: EN 12186).
Dosaodor DO200 is sold on the market with all its
complementary parts, like for example the bypass for
activating the absorption type system, the material for
electric installation and all the other components to be
properly installed on site.
INSTALLATION
General Rules
WARNING
!
National safety standards must be followed
for the installation and operation of odorizing
systems, in particular for the electric
connections, re and lightning protections,
and for the procedures of odorant
liquid handling.
All ventilation means must be supplied in
the pressure reducing stations where the
pressure equipment is installed.
Before the installation, check that operating
conditions are suitable with the limit ranges.
For odorant tank installation:
• Foresee an adequate cathodic protection
and electric isolation to avoid any
corrosion.
• Gas must be cleaned through dedicated
lters/separators/dust collectors to avoid
any risk of erosion or abrasion in the parts
under pressure.
The technical reference standards are released at National
level (in Italy: UNI 9463-1 and 9463-2), but odorizing
systems must be installed under the responsibility of the
user after completing the risk analysis (dangerous areas
classication, etc.) and, during the start-up, also the testing
and necessary set-ups are realized under the
user responsibility.
TRANSPORT AND HANDLING
Suitable and consolidated procedures for transportation and
handling have to be adopted in order to avoid any damage
to the devices under pressure due to abnormal stress.
The product can be lifted and positioned with standard lifting
devices. A special care has to be taken to avoid any damage
to installed accessories.
STORAGE
The Dosaodor DO200 is supplied with all the surfaces
completely protected (painted or in stainless steel), so it
does not require special precautions for the storage; it is
enough to follow some recommendations.
At its arrival on site, the product has to be completely
inspected to check any possible damage caused by the
transport. Inspect also the conditions of the pressure
accessories that are installed (valves, level indicators, etc.).
COMPONENTS POSITIONING
Control Panel
To be installed in an electrically “Safe” area. Therefore, in
natural gas decompression plants, the facilities suited to
these purposes are the following:
• Electric power facility, a dened area designed and built
to house all electrical devices linked to and controlled by
the station. i.e. Flow computers, remote monitoring units,
telephones, etc.
• Heating plant, that is, a dened area designed and built to
house the boilers needed for the heating of gas. This area
must be built and installed according to the specications
for an electrically “Safe area” classication.
• Rooms and storage units located outside the areas
dened as “Hazardous areas” according to the actual
regulation.
It is recommended that the control panel installation
guarantees an easy opening of main door.
It is best to install the unit is in the immediate vicinity
of the ow computer, to facilitate the connection of the
cable receiving signals from the Dosaodor DO200 during
operation.
Ground connections of the electronic control unit and
shielded cables to must be connected an equipotential node
(mandatory only for the countries members of the EEC).
11
Dosaodor DO200
Panel
Control
Flow
Computer
Odorant
Injection
Injection Panel
Flow Meter
M
Absorption Type
System Switch Valve
Odorant Inlet
Downstream Pressure
12
CLASSIFIED AREASAFE AREA
Odorant
Tank
Upstream Pressure
Figure 7. Connections Schematic of Dosaodor DO200 System with Absorption and Inlet Pressure Supply
Rechange
Tank
Panel
Control
Flow
Computer
Odorant
Injection
Upstream Pressure
Injection Panel
Cylinders
Pack
Dosaodor DO200
Flow Meter
M
Emergency
absorption
system valve
Downstream Pressure
Odorant
Tank
Odorant Inlet
Rechange
Tank
CLASSIFIED AREASAFE AREA
Figure 8. Connections Schematic of Dosaodor DO200 System with Absorption and Cylinders Pack Supply
13
Dosaodor DO200
Panel
Control
Odorant
Injection
SLAVE
Injection Panel
Panel
Control
Flow Meter
M
Odorant
Injection
Downstream Pressure
Upstream Pressure
MASTER
Injection Panel
Odorant Inlet
14
Odorant
Tank
CLASSIFIED AREASAFE AREA
Figure 9. Connections Schematic of Dosaodor DO200 Master / Slave System with Absorption and Inlet Pressure Supply
Rechange
Tank
Panel
Control
Odorant
Injection
Upstream Pressure
Cylinders
Pack
SLAVE
Injection Panel
Dosaodor DO200
Panel
Control
Flow Meter
M
Odorant
Injection
MASTER
Injection Panel
Downstream Pressure
Odorant Inlet
Odorant
Tank
CLASSIFIED AREASAFE AREA
Figure 10. Connections Schematic of Dosaodor DO200 Master / Slave System with Absorption and Cylinders Pack Supply
Rechange
Tank
15
Dosaodor DO200
Vent to safe area
Liquid Outlet
Sec. A-A
Injection Pressures Greater than 6 bar
Key Qty Description
1. 1 Tap NAM 1/2” M-F
2. 1 RX/181 pilot – FKM – setting = 6 bar
3. 1 Relief valve – FKM – 1/4” NPT-M
setting = 7 bar
4. 1 Solenoid valve 3-way DN 1/4” NPT-F, Eexd
5. 4 Straight tting DN 1/4” NPT-M
Figure 11. Injection Pressures Greater than 6 bar Connection Schematic Detail (required only when the absorption type system is included)
1
PRX/181
23
L
S
B
A
4
Liquid Odorant Injectors
126
143
253
5
Pipe size DN 2” Pipe size less than DN 10” Pipe size greater than or equal to DN 10”
Figure 13. Odorant Filter Dimensions and Connections
A
A
70
16
Dosaodor DO200
Injection Panel
To be installed in the immediate vicinity of the odorant
pick-up point (absorption-type tank or other type of tank).
All its components can resist to the chemical attack of all
odorant liquids and the aggression of atmospheric agents; it
has to comply with the requirements to guarantee
electric safety.
WARNING
!
The injector has to be installed on the
downstream piping of the station. It is
important to minimize the distance between
panel and injector, as a short distance limits
the quantity of odorant under pressure,
reducing the possibility to have liquid
micro leaks.
The panel, in its standard version, is designed
for oor installation; upon request, a support
can be supplied for wall installation.
It is very important to check that the lowest
point of the tank from which the odorant is
picked up (bottom) is located at a height of
at least 50 cm from oor level, and that the
panel is positioned with the lower anchoring
brackets resting on the oor. Lower height
between 40 cm and 50 cm shall be evaluated
punctually based on the instantaneous gas
ow rates.
For wall installation (optional), two spacer brackets are
supplied to install the panel at a certain distance from the
supporting wall.
The Dosaodor DO200 system includes an accessory kit
necessary for the standard installation of the system. For the
installation of the optional absorption type system refer to
Figure 6.
COMPONENTS CONNECTIONS
Electric Connections on Site
Figure 14. Electric Connections
The junction box S, installed on the injection panel, collects
all the signals (input and output) present on site. Inside the
box there is a terminal for the connections, with numbered
clamps and ground clamps.
The lower clamps are connected to the solenoid
valves commands and analog signals coming from the
measurement instrumentation.
Table 2. Electrical Connection of the Solenoid Valves
DEVICES
EV1
LOAD
to the Junction Box
JUNCTION
BOX S
Brown1
Blue6
GreenGround
Pneumatic Lines
The pneumatic connections between the Dosaodor DO200
panel, the gas piping and the odorant tank must be realized
only with stainless steel tubing of adequate diameter; in
this way the system is suitable to work also with mercaptan
odorants.
WARNING
!
The piping connecting the Dosaodor DO200
panel with the odorant tank has to be shaped
in a way to avoid air/gas pockets, therefore
it is suggested to make it as straight as
possible and with a constant slope, with
absolutely no rises and descents.
EV2
INJECTION L
EV3
INJECTION H
EV4
PRESSURE
EV5
ABSORPTION
Brown2
Blue7
GreenGround
Brown3
Blue8
GreenGround
Brown4
Blue9
GreenGround
Brown5
Blue10
GreenGround
17
Dosaodor DO200
Table 3. Electrical Connection of the Differential Level Pressure Transmitter to the Junction Box
JUNCTION
BOX S
DP LEVEL TRANSMITTER
CYLINDERS
PRESSURE
TANK LEVEL TRANSMITTER
(OPTIONAL)
DEVICES
PWR +15
COMM -18
GNDGround
SIGNAL +17
SIGNAL -20
GNDGround
SIGNAL +16
SIGNAL -19
GNDGround
The injection panel and the control panel are connected through a multipolar cable:
FR2OHH2R (12 x 0,75 mm2) or similar.
This cable is connected to the upper clamps in the Junction Box S of injection panel, and to the terminal of the control unit located
in the control panel.
Table 4. Electrical Connections of the Multipolar Cable to the Junction Box
DEVICESJUNCTION BOX S
EV1 LOAD Solenoid Valve 1White1
EV2 INJECTION L Solenoid Valve2Yellow2
EV3 INJECTION H Solenoid Valve 3Green3
EV4 PRESSURE Solenoid Valve 4Grey-pink4
EV5 ABSORPTION Solenoid Valve5Red-blue5
0 V8Black6
External Flow Meter (+)12Blue7
External Flow Meter (-)13Pink8
24Vdc15Red9
Dpt Level Transmitter (-)18Grey10
Tank Level Transmitter (optional) (-)19Purple11
Cylinders Pressure Transmitter (-)20Brown12
-GroundShieldingShielding
MULTIPOLAR CABLE
(COLORED POLES)
MULTIPOLAR CABLE
(NUMBERED POLES)
18
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