SGM LEKTRA TT Quick start guide

Page 1 of 4
Rev. of 28/10/2021
TT/MUX02EX
safety, installation, use and maintenance instructions
1 - CERTIFIED ATEX VERSION IDENTIFICATION
1. Product code
2. Marking
3. Protection degree
4. Serial number
5. Certifyingbodyidenticationcode
2 - SAFETY INSTRUCTIONS
The probes and the power unit are suitable for the installation in potentially explosive atmosphere for the presence of
combustible dust.
Makesurethatthedevicesmarkingisincompliancewiththeareaclassication;donotinstallthedevicesinpresenceof
explosive gases (zone 0, 1 or 2).
Verifythattheinstrumentsinstallationdoesnotaecttheprotectiondegree.
Device improper use may cause damage to people, to the product and the connected equipments.
Always observe the nameplate data for the power supply and the electrical connections.
3 - INSTALLATION AND COMMISSIONING
Theinstallationmustbeperformedonlybyqualiedandproperlytrainedpersonnelinaccordancewiththecurrent
Regulation EN 60079-14.
Theequipmentsmustbeusedonlyaerhavingcorrectlyunderstoodtheinstructionsprovidedonthisdocument
and on the manual.
The devices must be mounted so as to minimize the risk of shock to the housing and to the sensitive part.
Useonlythethreadedconnection(32mmwrench)toinserttheprobesintheprocess;donotusethehousingtomanuallyscrewthe
sensor on the process.
Always connect the cable shield to “SCH” connection that is equipotential with the ground connection of enclosure.
Forangemountingorunder-roofmountinguseonlytheaccessorieslistedonSGMLEKTRAcatalog.
TTprobescanbeconnectedexclusivelytoMUX02EXconcentrators;anyotherconnectioncompromisesthesecurityand
invalidates the method of protection.
SI19001A_ENGRev.of28/10/2021
Multipoint digital probe for temperature measurement in tanks and
storage silos.
European directive: 2014/34/UE
ATEXreference:50014:197;50281-1-1:98incomplianceto
EN60079-0:2018;EN60079-31:2014
Model : TT
ATEXGroupandcategory:II1D
Protection mode: by housing “ta”
Protection degree: IP66
Maximum measurable temperature: +125°C
Ambient temperature: -30°C ÷ +125°C
Warning: This document is an integral part of the manual and must be read and understood in conjunction with it
Power unit for the reading and the re-transmission of the temperature
detected by TT probes.
European directive: 2014/34/UE
ATEXreference:50014:197;50281-1-1:98incomplianceto
EN60079-0:2018;EN60079-31:2014
Model: MUX02EX
ATEXGroupandcategory:II1D
Protection mode: by housing “tb”
Protection degree: IP66
Ambient temperature: -20°C ÷ +70°C
Power supply: 230V 50Hz
Type: TT1E0L05B0
Connect with MUX02EX
SGM LEKTRA 20090 Rodano (MI) , Italy
IP66 T 125 °C
II 1 D
Serial N°TM0101916632-2019
-30°C - +125°C
KEMA 04ATEX2010 0051
L=12,57mt.
1
5
4
2
3
SGM LEKTRA 20090 Rodano (MI) , Italy
Connect with TT probes only
IP66 T 125 °C
Type: MUX02EX
II 2(1) D 0051
Serial N TM0012003789-2020
-20°C - +70°C
KEMA 04ATEX2010
1
5
4
2
3

Page 2 of 4 Rev. of 28/10/2021
4 - ELECTRICAL CONNECTIONS
- Remove the closing cover and the caps from the cable glands.
- Insert the connection cables between the TT probes and MUX by passing them through the cable glands.
- Connect the cables to the appropriate terminals as indicated in the subsequent paragraphs.
- Fully tighten the cable glands and the cover to ensure IP66 protection (refer to par. 7 – Tightening torque)
ElectricalconnectionsbetweenTTsensorsandMUX02EXunitmustbemadewithshielded-cableFTP44x2x24AWGorequivalent.
The shield must be connected to the “S” TT sensor main connector only!
Connection cable limit-lenght from MUX02 to TT sensor is 50m, be sure to place it far from power cables.
WARNING!
The reverse connection of the cables can demage the TT sensors.
N
L
SCH
SUPPLY
0V0V
PROBE 4PROBE 3PROBE 2 PROBE 7PROBE 6PROBE 5 PROBE 8PROBE 1
RS485RS485
B B
A A
+
+ + + + + + +- - - - - - - -D D D D D D D D
D
+
-
S S
-
D
+
S
-
D
+
S
-
D
+
S
-
D
+
Probe
230Vac
115Vac
IN OUT
X
+
D
-
S
+
D
-
S
+
D
-
S
+- D
S
-
D
+
MUX02EX
All the sensors must
ATTENTION !
be grounded

Page 3 of 4
Rev. of 28/10/2021
5 - MAINTENANCE
The checks and maintenance should be performed only by properly trained personnel, in accordance with the European
standards EN 60079-17 requirements. If it is necessary to open the housing when the probe is energized, be sure to
remove all the dust from the housing and avoid the accumulation of dust inside the housing.
Anyunauthorizedmodicationtotheprobe,raisesSGMLEKTRAfromallliabilityandwillvoiditswarranty.
6 - ATEX ZONE IDENTIFICATON
Zone 21
Zone 20

Page 4 of 4 Rev. of 28/10/2021
SGM-LEKTRAS.r.l.
ViaPapaGiovanniXXIII,49
20053Rodano(MI)-ITALY
tel:++390295328257
fax:++390295328321
e-mail: [e-mail]
web: sgm-lektra.com
7 - TIGHTENING TORQUE
Tightening torque in Nm
PG MUX02EX TT
9 2,5 6
11 3,5 -
PG9
PG9
PG9
PG9
PG9
PG9
PG9
PG9
PG11
PG9 PG9
PG9