Solexy Wireless RX Series User manual

IM0005-00
Via Enrico Fermi, 2
I-25015 Desenzano del Garda (BS) - Italy
Phone: [phone]
Fax: [phone]
www.solexy.net
RX
Explosion Proof / Intrinsically Safe Antenna Coupler for use in
Hazardous Areas
Installation & Operation Manual
OVERVIEW
The Solexy RX series explosion proof and intrinsically safe
antenna coupler is an integrated protection device that
facilitates non-Ex certified radio antenna installation in
hazardous areas. The patented (7.057.577) RX series coupler
features a barrier circuit which blocks power voltage in the
event of a radio transmitter/receiver fault and is
encapsulated and housed in an explosion proof stainless steel
body. By limiting transmitted power per local regulations and
ensuring the threshold power requirements for the area of
installation are met, the RX coupler can easily be used with
most passive antennas. When a radio must be used in a safe
area, the RX coupler can still protect the output signal using a
cable to connect to an antenna that is installed in a hazardous
area.
Note: The information in this manual is intended to assist
with equipment design and ensure proper installation.
READ THIS INSTRUCTION FIRST
To avoid serious or fatal personal injury or major property
damage, read and follow all safety instruction in this manual.
If you require additional assistance, please contact SOLEXY.
SAFETY INSTRUCTION TO HAZARDOUS AREA INSTALLATION
▪The Solexy RX explosion proof and intrinsically safe
Antenna Coupler must be installed and maintenance
according to suitable standards for electrical application
in potentially explosive atmospheres (IEC/EN 60079-14,
IEC/EN60079-17 and/or other national standards).
▪Suitably trained personnel shall carry out installation
according with applicable code practice.
▪Read this first and keep this instruction manual always
available.
▪For proper installation, see the applicable control drawing
DDCD-0006 attached.
ATEX / IECEx MARKING
I M2 (M1) Ex db mb [ia Ma] I Mb
II 2 (1) G Ex db mb [ia Ga] IIA/IIB/IIC T6…T5 Gb
II 2 (1) D Ex mb tb [ia Da] IIIC T80°C…T100°C Db
This instruction refers to certified equipment covered by
following certificate:
ATEX: TÜV CY 18 ATEX 0206158 X
IECEx: IECEx MSC 19.0001X
WARNINGS
1. Solexy RX series antenna coupler must be connected to RF
source with minimum internal impedance of 50Ω.
2. Connected antennas must be assessed, installed and
maintained according to suitable standards for electrical
application in potentially explosive atmospheres (e.g.
IEC/EN60079-0, IEC/EN60079-14, IEC/EN60079-17 or
other national standards).
3. Solexy RX series antenna coupler does not provide any RF
power limitation. The threshold power must be limited by
the user in order to achieve the levels defined in
IEC/EN60079-0 Table 4.
4. The RX series antenna coupler is designed to be used with
a suitable enclosure with mechanical protection of the
input side that utilizes one of the protection types listed
in Clause 1 of IEC/EN60079-0 when it is installed in an Ex
area. The protection type utilized shall be applicable to
the specific area of use (i.e. Gas or Dust).
5. In case of use of a Ex tb enclosure with metric entries
ensure 5 engaged threads minimum or use an appropriate
gasket.
6. In case of use of a Ex tb enclosure with NPT entries ensure
3,5 engaged threads minimum.
7. It is responsibility to the installer to ensure an IP6x level at
the threaded joint between antenna coupler and Ex tb
enclosure.
8. When installed in a safe area the input side must be
protected from sun exposure. For example by using a
housing or by being in an indoor area.
9. The user should not repair this equipment.
10. The user should not modify the unit.
11. The unit should not painted from the user.
12. If the equipment is likely to come in to contact with
aggressive substances, it is responsibility of the user to
take suitable precautions that prevent it from being
adversely affected, thus ensuring that the type of
protection is not compromised. Aggressive substances:
example Acids, liquids, gases with can affected metals.
13. Maximum RF power input shall not exceed the value listed
into control drawing DDCD-0006.
14. Maximum service temperature (Ts) of RX antenna coupler
and is 91°C.
15. Maximum service temperature of equipment it is installed
in shall not exceed +80°C in case of max RF power input
(Pi) of 6 W (max T amb allowed +80°C) or +85°C in case of
max RF power input (Pi) of 2 W (max T amb allowed
+85°C).
INSTALLATION
For proper installation, see the applicable control drawing
DDCD-0006

IM0005-00
1. Do not attach radio connection to radio until housing has
been fully threaded into enclosure.
2. If lightning suppressor is used, connect to output side of
the coupler.
3. Antenna and cable connections should be finger
tightened only. Over tightening can cause permanent
damage resulting in equipment failure.
4. RX series antenna couplers with M25 straight threads
(RX*M) must be secured from loosening when installed
in an Ex d enclosure. Use of LOCTITE® or similar sealing
adhesive is acceptable and shall be applied to threaded
joint prior to mounting the RX antenna coupler to the Ex
d enclosure so the joint is secured against loosening.
PRODUCT SPECIFICATIONS
Ambient temperature range
Max RF Power Input (Pi)
Dust
Gas
6 W
37.8 dBm
100
-40°C ≤ Ta ≤ +80°C
-40°C ≤ Ta ≤ +65°C
2 W
33 dBm
80
-40°C ≤ Ta ≤ +85°C
-40°C ≤ Ta ≤ +70°C
Refer to product marking for
max RF Power Input (Pi) allowed
and related ambient temperature
Maximum Fault Voltage (Um)
250 VDC
250 VAC 50-60 Hz
Frequency Range
≤ 6 GHz
Impedance
50 Ω
Maximum RF Threshold Power
(table 4 in IEC/EN60079-0)
ATEX/IECEx
Equipment Group
Threshold Power
Group I, IIA, III
6 W (37.7 dBm)
Group IIB
3.5 W (35.4 dBm)
Group IIC
2 W (33.0 dBm)
MAXIMUM RF INPUT POWER (Pi)
Refer to product marking for maximum RF Input Power (Pi)
allowed (see product specification table above).
This value do not consider any cable loss between the RF
transmitter and the RX coupler and may therefore be
considered as the maximum allowable RF transmitter output
power when the RX coupler is directly connected to a RF
transmitter.
Added cable loss between the RF transmitter and the RX
coupler may allow the RF transmitter output power to exceed
the value above as long as the cable loss ensures the power
at the input of the RX coupler is less than or equal to the
above values.
󰇛󰇜
󰇛󰇜
 󰇛󰇜
It is permissible limited the maximum power output of the
transmitter by a programmable or software setting but it
must not be possible for an end-user to override it.
MAXIMUM PERMITTED
RF THRESHOLD POWER (Pth)
The RF threshold power, sometimes called the effective
isotropic radiated power (EIRP), as defined in IEC/EN60079-0,
is the product of the effective output power of a radio
transmitter multiplied by the power gain of a connected
antenna. The maximum threshold powers for each
equipment group as defined by Table 4 in IEC/EN60079-0 are
provided above.
Because most antennas list the gain relative to an isotropic
radiator (dBi) instead of the raw power gain, it is often easier
to simply add the antenna gain in dBi to the radio output
power in decibel-milliwatts (dBm). Any added cable loss
between the RF transmitter output and the RX input, or the
RX output and the antenna may also be factored in.
󰇛󰇜
󰇛󰇜  󰇛󰇜
 󰇛󰇜
 󰇛󰇜
▪The resulting threshold power calculated by the above
formula MUST be below the threshold power for the
operating area group rating given above.
▪Consideration of fault conditions in the radio transmitter
is not necessary. The max radio transmitter’s RF power
output should be taken from manufacturer’s datasheet in
normal operation.
▪A radio output power lower than those provided above
may be used to allow for an antenna with a higher gain.
▪In case of device with multiple outputs and multiple
antennas, each threshold power is calculated separately
for each output/antenna.
▪Gain of multiband antennas should be evaluated
separately at each individual frequency.
▪High gain directional antennas on the same device should
not be directed in the same direction.
ANTENNA CONNECTION
The antenna connected to the RX coupler must be installed in
accordance with the earthing requirements of IEC/EN 60079-
14.
Antenna's earthing need to evaluate in function of RX coupler
series as follows:
Model RXF, RXN, RXS, RXT, RXB
In case of antenna direct mounting on RX coupler (without
coax cable) the antenna is earthed through the enclosure
earth connection via RX body.

IM0005-00
In case of remote antenna installation using a coax cable the
antenna need to be installed on an isolate earth support in
order to grant a single earth connection through the
enclosure earth connection.
Model RX1, RX2, RX3 (ISOLATE GROUND)
In case of antenna direct mounting on RX coupler (without
coax cable) the antenna ground is isolated from earth.
In case of remote antenna installation using a coax cable the
antenna can be earthed through adequate connection.
MAXIMUM JOULES CALCULATION IN CASE
OF COAX CABLE INSTALLATION
In case of coax cable installation (radio/SX coupler and SX
coupler/Antenna) the adding cable need to be evaluating to
ensure that the maximum energy stored on cable not
exceeded the value allowable per IEC/EN 60079-11:
Max energy (Joules) allowed per
IEC/EN 60079-11
Group I
1500 μJ
Group IIA
950 μJ
Group IIB
250 μJ
Group IIC
50 μJ
The calculation can be done according to following equation:
 
 󰇥    󰇛  󰇦
Where:
E = Energy
C= RX Capacitance + Coax cable capacitance
(see below RX series reference value)
R = Impedance (50Ω)
P = Radio power output
1.5 = Safety Factor
RX Coupler capacitance
Type
pF
J
81.6
R
18
L
56.4
Example
RF Radio Power Output = 2 W
Antenna cable capacitance = 1195 pF
SX (J type) Coupler capacitance = 81.6 pF
Input cable capacitance = 73 pF
Total Capacitance C = 1349.6pF
 
 󰇥    󰇛  󰇦  
Answer = 0.152μJ acceptable for any Group
▪The verification and maintenance of the electrical
equipment must be performed according to IEC/EN
60079-17.
▪The user should guarantee the keeping of the safety
characteristic of the device after maintenance.
▪The maintenance related the components used for wiring
must be performed according to manufacturer
instruction.
DISPOSAL / RECYCLING
Disposal and recycling of the product according to national
regulation for waste disposal and recycling.
WARNING: Do not dispose the product and the components
in the environment.
MODEL NOMENCLATURE
RX X X X XX XX X XX - XXXXX
1 2 3 4 5 6 7 - 8
1 Coupler Series
F RP-SMA Female
N N Female
S SMA Female
T TNC Female
B BNC Female
1 N Female (isolate ground)
2 TNC Female (isolate ground)
3 BNC Female (isolate ground)
2 Threads
3 ¾” NPT
M M25x1.5
3 Material
S AISI 303
C AISI 316
L AISI 316L
4 Coaxial Radio Connector
XX varies, see sales literature
5 Coaxial Cable Length
00 no cable (direct RF connection)
XX cable length in inches
6 Frequency Range
X varies, see sales literature (type J, L or R)
7 Certification Mark
X0 ATEX / IECEx
XN ATEX / IECEx and North America & Canada
standards (dual marking)
8 Special execution
XXXXX varies, consult Solexy