TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook DG-TX7-X User manual

NOSP17665-Revision 02a
MULTIXPLO AND MULTITOX
DETECTORS
DG-TX7-X (Catalytic)
DG-TT7-K (Catharometer)
(with Magnetic interface)
OPERATING
MANUAL

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OPERATING MANUAL
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User manuals in other languages are available on
Website https://teledynegasandflamedetection.com
Copyright January 2021 by TELEDYNE OLDHAM SIMTRONICS S.A.S.
All rights reserved. No reproduction of all or part of this document, in any form, is permitted
without the written consent of TELEDYNE OLDHAM SIMTRONICS S.A.S.
All of the information that is provided in this document is accurate to the best of our knowledge.
As a result of continuous research and development, the specifications of this product may be
changed without prior notice.
TELEDYNE OLDHAM SIMTRONICS S.A.S.
Rue Orfila
Z.I. Est – CS 20417
62027 ARRAS Cedex

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Limitation of Liability
The Company TELEDYNE OLDHAM SIMTRONICS S.A.S., hereinafter referred to as “TELEDYNE
OLDHAM SIMTRONICS” throughout this document, shall not be held responsible for any
damage to the equipment or for any physical injury or death resulting in whole or in part from the
inappropriate use or installation of the equipment, non-compliance with any and all instructions,
warnings, standards and/or regulations in force.
No business, person or legal entity may assume responsibility on behalf of TELEDYNE OLDHAM
SIMTRONICS, even though they may be involved in the sale of TELEDYNE OLDHAM
SIMTRONICS products.
TELEDYNE OLDHAM SIMTRONICS shall not be responsible for any direct or indirect damage,
or any direct or indirect consequence, resulting from the sale and use of any of its products
UNLESS SUCH PRODUCTS HAVE BEEN SELECTED BY TELEDYNE OLDHAM SIMTRONICS
ACCORDING TO THE APPLICATION.
Ownership clauses
The drawings, specifications, and information herein contain confidential information that is the
property of TELEDYNE OLDHAM SIMTRONICS.
This information shall not, either in whole or in part, by physical, electronic, or any other means
whatsoever, be reproduced, copied, divulged, translated, or used as the basis for the
manufacture or sale of TELEDYNE OLDHAM SIMTRONICS equipment, or for any other reason
without the prior consent of TELEDYNE OLDHAM SIMTRONICS.
Warning
This is not a contractual document. In the best interest of its customers and with the aim of
improving performance, TELEDYNE OLDHAM SIMTRONICS reserves the right to alter the
technical features of its equipment without prior notice.
READ THESE INSTRUCTIONS CAREFULLY BEFORE THE FIRST USAGE: these instructions
should be read by all persons who have or will have responsibility for the use, maintenance, or
repair of the instrument.
This instrument shall only be deemed to be in conformance with the published performance if
used, maintained, and repaired in accordance with the instructions of TELEDYNE OLDHAM
SIMTRONICS by TELEDYNE OLDHAM SIMTRONICS personnel or by personnel authorized by
TELEDYNE OLDHAM SIMTRONICS.

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Important Information
The modification of the material and the use of parts of an unspecified origin shall entail the
cancellation of any form of warranty.
The use of the unit has been projected for the applications specified in the technical
characteristics. Exceeding the indicated values cannot in any case be authorized.
TELEDYNE OLDHAM SIMTRONICS recommends regular testing of fixed gas detection
installations (read Chapter 7.2).
Before any intervention on the detector, please refer to the EN 60079-29-2 standard.
Warranty
Under normal conditions of use and on return to the factory, MultiXplo and MultiTox detectors
carry a 2-years warranty excluding accessories such as tilt mount, weather protection, etc.
Waste Electrical and Electronic Equipment (WEEE
directive)
European Union (and EEA) only. This symbol indicates that, in conformity with directive
DEEE (2002/96/CE) and according to local regulations, this product may not be
discarded together with household waste.
It must be disposed of in a collection area that is set aside for this purpose, for example at a site
that is officially designated for the recycling of electrical and electronic equipment (EEE) or a
point of exchange for authorized products in the event of the acquisition of a new product of the
same type as before.

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Table of Contents
1Product description.......................................................................... 1
1.1 Application Fields ..............................................................................................1
1.2 DG-TX7-X ...............................................................................................................2
1.3 DG-TT7-K ................................................................................................................2
1.4 Technical specifications .................................................................................2
1.5 Detection Cartridge.........................................................................................4
1.6 Communication Interface.............................................................................4
1.7 Product Code.....................................................................................................6
2Technical features............................................................................ 9
3Performances .................................................................................... 13
4Installation .......................................................................................... 15
4.1 Positioning.............................................................................................................15
4.2 Assembly ...............................................................................................................15
4.3 Electric Connection..........................................................................................18
4.4 Detection cartridge..........................................................................................26
5Commissioning.................................................................................. 27
5.1 Visual inspection ................................................................................................27
5.2 Power-up...............................................................................................................27
5.3 Operational tests ...............................................................................................27
6Operation ........................................................................................... 29
6.1 Environmental conditions...............................................................................29
6.2 Inhibition................................................................................................................29
6.3 Signal current loop............................................................................................30
6.4 Alarm indication ................................................................................................31
6.5 Display indication ..............................................................................................31
6.6 Wireless communication tool TLU600.........................................................33
6.7 Information menu [INFO]................................................................................36
6.8 Adjustment menu [ADJT]................................................................................37
6.9 Maintenance menu [MAIN] ..........................................................................43
6.10 Ambiguity function in combustible gas detector smart sensors ....44

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6.11 Magnets operation...........................................................................................45
7Maintenance ..................................................................................... 47
7.1 Power off / opening of housing...................................................................47
7.2 Periodic maintenance ....................................................................................47
7.3 List of main faults................................................................................................48
7.4 Replacing the cartridge .................................................................................49
7.5 Replacing the complete detector.............................................................50
8ATEX / IECEx Marking ..................................................................... 51
9Accessories and spare parts......................................................... 53
9.1 Accessories ..........................................................................................................53
9.2 Spare parts...........................................................................................................55
9.3 Gas table codes & range table codes ....................................................56
10 Conformity certificate ..................................................................... 61

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1Product description
The DG-TX7-X is designed to monitor explosions risks induced by the presence of flammable
gases or vapours (hydrogen, hydrocarbons, alcohol, etc.).
The DG-TT7-K is designed to monitor the gas concentration in %vol. induced by the presence of
some special gases or vapours (hydrogen, helium, carbon dioxide, etc.).
The detector can be connected directly to a large range of traditional controllers or
Programmable Logic Controllers (PLC).
The DG-TX7-X and the DG-TT7-K can be fully configured using the portable communication
terminal (TLU600) in ATEX areas, providing flexibility to the user.
These detectors can be configured also using the magnetic wand or the Hart portable terminal
TLH700 (in option).
The MultiXplo and MultiTox are also available for use in an addressable network system with
distributed intelligence, SYNTEL. For more information, please refer to the Syntel module interface
operating manual.
1.1 Application Fields
The DG-TX7-X and the DG-TT7-K are suitable for indoor and outdoor uses and offer a fast
response time. Typical applications include:
•Storage and use of combustible/flammable gases and
vapours (DG-TX7-X),
•Monitoring of processes with flammable products
•Hydrogen detection in inert atmosphere and in high
concentration (DG-TT7-K),
•Chemical and petrochemical plants
•Pharmaceutical industry
•LNG/LPG
•Oil and gas facilities

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1.2 DG-TX7-X
Detectors are calibrated on 100% LEL (Lower Explosive Limit) of a particular-gas or vapour.
The DG-TX7-X is a MultiXplo detector based on a thermo-catalytic oxidation transducer, which
requires oxygen to function properly.
In the event of a long period without oxygen, the measurement will no longer be representative
of the concentration of gases or vapours.
The characteristics of the device can also be altered by the presence of certain catalyst poisons
such as silicone fumes, vapours of organometallic compounds and, to some extent by
halogenated compounds.
1.3 DG-TT7-K
The DG-TT7-K is a MultiTox detector, based on catharometric transducer. Its measurement range
is usually expressed in terms of %vol. relative to a particular-gas (for example 5%vol. H2, 5%vol.
He...).
The DG-TT7-K measurement principle is based on the heat exchange between a heated filament
and a "cold" separation. The effectiveness of the exchange between those two elements depends
of the value of the thermal conductivity of the mixture which separate them.
This measurement principle is very stable, and able to operate with high gas concentrations.
In this configuration, the presence of oxygen is not essential, and catalytic poisoning is not an
issue.
1.4 Technical specifications
Each detector is constructed as follows:
•A wall-mounted support secured by three screws and including cable gland (M20)
(optional). There are 2 standard entries and an optional one.
•A stainless-steel explosion-proof housing containing:
- A set of tropicalized electronic cards
- A display and infrared communication electronic card allowing the
communication with the remote control (TLU600)
•A colour coded cartridge, yellow for combustible gas detectors (DG-TX7-X) and brown
for catharometers (DG-TT7-K), located in the lower part of the detector.

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This cartridge is connected to the detector’s body by an open ring leaving the label visible.
A coloured ring enables the identification of the device type at a larger distance.
•A metallic support cable (optional) connects the wall mounting support and the housing,
making the maintenance easier.
Figure 1 : Layout Drawing
(Outline drawing – see
Figure 2)
Note: there are some special versions using stand-alone
Wheatstone ½ bridge probes as the SX202 type
(product code: DG-TX7-**DG-WXC-**-000-0-*-0)
Such version will be called « External probe versions » in the rest
of the document

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1.5 Detection Cartridge
Detection Cartridges are explosion proof designed.
They are common to all TELEDYNE OLDHAM SIMTRONICS MultiXplo and MultiTox-K products
in order to reduce the number of spare parts.
•DG-RX7-X et DG-RT7-K: Network « Télécapteur » line
•DG-TX7-X et DG-TT7-K: « Télécapteur » line
For combustible gas detector’s cartridges, if the difference between the storage temperature and
the operating temperature does not exceed 20°C, the nominal characteristics are obtained after
a few minutes. Otherwise, wait for the balancing thermal unit, about half an hour.
Catharometer cartridges (cartridges K) need to be in thermal balance with their environment to
provide nominal performance. Thus, when the cartridges have been unpowered more than half-
an-hour, a warm-up time is required when power is restored. The duration of warm-up is usually
range from ½ hour to 4 hours, depending on the temperature difference between the cartridge
and the ambient temperature.
The cartridge temperature information is available on the TLU.
The cartridge must not be unplugged when the detector is powered.
1.6 Communication Interface
1.6.1 Wireless Configuration Tool
Information and status of the detector are available via the wireless configuration tool TLU600.
Configuration and tests are performed using this wireless configuration
tool (IrDA protocol). This tool is common for all TELEDYNE OLDHAM
SIMTRONICS MultiFlame, MultiXplo and MultiTox products.
The TLU600 provides access to devices that, otherwise, would require
major logistic operations for maintenance or for configuration
(calibration …).
For more details, please refer to the wireless configuration tool operating
manual.

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1.6.2 Magnetic wand
The detector includes two magnetic sensors PG1 and PG2
implanted on both sides of housing.
The communication interface is a magnetic wand. The wand gives
access to information, state and configuration about the detector
as the TLU (see §6.11).
1.6.3 HART communication
The HART communication authorizes an addressing of devices,
allowing the communication in read/write mode.
It consists in getting connection on the current loop on which the
numerical data are superimposed.
Most of the HART terminal can read these information and send
commands
The use of a DD (Device Descriptor) facilitates the interface Man-
Device. It can be uploaded on our website.
The HART output is an option. It is available only on the devices
equipped with an electronic type C, in HART configuration
(H):
DGi
-**7-****-**H-**-***-*-C-*
TELEDYNE OLDHAM SIMTRONICS devices under HART protocol enable the
use of all the functions available with the TLU600 via the HART terminal
See the document D1401002 for the using of Hart terminal TLH700 (the Detector Device
Descriptor must be downloaded).

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1.7 Product Code
Product codes are created from functional codes: DG-**7-****-***-**-***-*-*-*
Detector type
T
X
7
30
DG
-X
X
H
-X
0
-00J
-0
-D
-0
C**
Compact Sensor
T**
Télécaptor
R
** Network version
S**
Replacement cell
X**
Accessories
Families
*T*
Toxic
*V*
Flame
*
X
* Flammable gas
*
0
* None
Version
**
6
BT606 housing
**7
BT10 housing
Gas type
**
Refer to gas matrix
Measurement range
** Refer to gas matrix
Type
XV
UVIR2
XT
IR3
XW
UV
Detection range
A0
Standard range
B0
Long range
Input Type
0
** Not used or flame
DGi-TT7-E/O & DMi-TT6-E/O
E**
Electrochemical
DG-TT7-S / DM-TT6-S
S**
Semi-conductor
K
** Catharometer
X**
Catalytic
M
** MECH
R
** TOR input
C**
Current input 0/22 mA
I**
Infrared
W**
½ Wheatstone bridge
Variant
*
A
* Aluminium
*X*
SS316
Output Interface
**M
1-2 mA protocol
**A
0-22mA protocol (fault signalling in 0-4mA range)
**
E
4-20 mA protocol (Common fault signal 2 mA)
**H
4 – 20 mA / 0-22 mA configurable & HART protocol
**C
4 – 20 mA / 0-22 mA configurable
**
W
Wheatstone
**L
LON
**X
4 – 24 mA for compact explosimeter (magnet)

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T
X
7
30
DG
-X
X
H
-X
0
-00J
-0
-D
-0
Cartridges
0*
No cartridge or not specified or flame
DGi-TT7-O / Dmi-TT6-O
M
* Electrochemical type M
G*
Electrochemical type G
Dgi-TT7-E / Dmi-TT6-E / DGi-TT7-O / Dmi-TT6-O
Y*
Electrochemical type Y
N
* Electrochemical type N
DG-TT7-X / DM-TT6-X
X*
Catalytic
DG-TT7-S / DM-TT6-S
S
* Semi-conductor (general designation for semiconductor type
G)
F*
Semi-conductor type 30 (previously SF) since 2015
C*
Semi-conductor type 31 since 2015
DG-TT7-K / DM-TT6-K
K*
Catharometer
Half Wheatstone bridge probes
E*
EX05, EX09 (external)
L*
SX202-16
T*
SX202-10
U*
SX202-14
V*
SX202-17
H*
MTHX-S
J*
MTHX ( / , E, N, NE)
W*
SD122
Z*
SD122-01
DG-TT7-I / DM-TT6-I
D*
Infrared type D
P*
Infrared type P
Semicond.Sensor type & special configurations
*0
Not specified or standard
DG-TT7-S / DM-TT6-S
*
A
20
*B
23
*C
24
*D
25
*
E
27
*F
30 (become obsolete to release *R association)
Options
*K
SD122 (EK)
*M
Special version MarED (TX6 and TV6 in type A only)
*
N
Special version with ALRM LED not memorized (not in
compliance with EN 54-10) (flame version only)
*R
With relay board for HW type D (gas)
*T
MTHX-S (ET)
*X
SX202 (EX)
Customized versions *
1
Customized EPR (special follow up, SP4M20)
(DM and DMi only)
*2
Configuration
000
Standard
**A Absolutely no grease
**B
Special version MarED (old code)
(TX6 and TV6 in type A only)
**C
Not EN 54-10 compliant version (not
latched ALRM LED) (type A only)
**D
IRDA cap instead of display
**E
0V not connected to housing ground on Tox
type C
**F
Certified telecaptor instead of IRDA cap
**G
Hydrocentrifugon paint (nuclear
applications)
**H Special paint : light grey (10A03 according
to « British standards 4800/5252 »)
**J
Special paint : red (RAL 3001)
**K
Machining of additional cable gland input
*L*
Paint thickness > 200 µm(ATEX versionIIB)

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T
X
7
30
DG
-X
X
H
-X
0
-00J
-0
-D
-0
Language
0
Fr / GB
F
French
E
English
P
Portuguese
C
Chinese
Hardware version
A
Type 63
B
Type 65
C
Type 67 (HART)
D
Type 69 (magnet)
Software version
0
Standard

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2Technical features
GENERAL
Type Gas detector
DG-TX7-X MultiXplo (catalytic gas detector)
DG-TT7-K MultiTox (catharometer gas detector)
DG-RX7 or DG-RT7 Network detector
Calibration1Recommended test every 6 months
OUTPUT SIGNALS
4-20mA loop signal Type active (source) maximum load impedance 700Ω
E version - « 4-20mA » 4-20mA with one fault level
•0% full scale 4 mA
•100% full scale 20 mA
•105% full scale 20.8 mA
•Ambiguity function 21.7 mA (DM-TX6-X)
•Fault or inhibition 1.5 mA
A version - « 0-22mA » 4-20mA with several fault levels, for PLC and some recent
control units
•0% full scale 4 mA
•100% full scale 20 mA
•>105% full scale 20.8 mA
•Ambiguity function 21.7mA (DM-TX6-X)
•Inhibition 3.4 mA
•Fault measure 2.6 mA
•Device fault (HW/SW) 2.0 mA
Output relays 3 x configurable relays max 1.7A / 35V AC/DC (in option)2
1These frequencies of calibration control are provided for information purposes only. The frequency depends on
the operating conditions, the experience and safety requirements.
2This value changes to 1A when the security function uses the relays and the SIL level is required.

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ELECTRICAL
Power supply: 24VDC,(18 – 28 V DC versions DG-T#7)
(18 – 35 V DC versions DG-R#7))
Consumption: 1.6 W typical, 5 W maximum 3
3 W typical, 5 W maximum for network detector
Wiring: 0,5mm² (20AWG)-2,5mm² (13AWG).
MTBF: DG-TX7-X Hart Version237 888 Hours
DG-TT7-K Hart Version 197 096 Hours
ENVIRONMENT
Storage -40°C to +65°C
Time: 2 years in « clean » atmosphere
Pressure: 1013 hPa ± 20%
Humidity: 95% HR (non-condensable)
Temperature range -40°C to +65°C
(with external probe versions, each element has his own
temperature range)
Pressure 1013 Hpa ± 10%
Humidity 95% HR (non condensable)
Protection IP66
RFI/EMI EN 50270
Heating time (DG-TX7-X): < 100 sec
Stabilisation time (DG-TX7-X): < 190 sec
PERFORMANCE (DG-TX7-X)
European EN 60079-29-1 (except external probe versions)
3Typical power: voltage 24 Vdc, current 4 mA, display brightness 20%
Maximum power: voltage 35 Vdc, current 22 mA, maximum display brightness, relay card option

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EXPLOSION PROOF HOUSING
Material stainless steel 316 L
Weight 4.0 kg stainless steel
ATEX/IECEx Please refer to §8
DIMENSIONS
Figure 2: Outline drawing (mm)
(Version with SX202: height dimensions = 190 mm)

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3Performances
Expected lifetime in standard conditions:
•>5 years for DG-TX7
•>10 years for DG-TT7-K
This lifetime can be reduced in case of exposure to dusty environments.
For catalytic
version, some compounds are known to poison sensors. These
include, organometallic, silicone and some halogenated compounds
PERFORMANCES
DG-TX7-X
DG-TT7-K
Detector CH4 H2 C4H10 H2CO2He
Ranges 100 % L.E.L.
(5.0 %vol)
100 % L.E.L.
(4.0 %vol)
100 % L.E.L.
(1.9 %vol)
5%vol
20%vol
100%vol
20%vol 5% vol
20% vol
100% vol
Relative sensibility 1.70 1.70 1.00 
τ(0-90%) (sec) < 15 < 10 < 20 < 10 < 30 < 10
Zero point stability < 3 < 3 < 3 < 3 < 3 < 3
Sensibility drift < 3 < 3 < 3 < 3 < 3 < 3
T° range (°C) -40 / +65 -40 / +65 -40 / +65 -40 / +65 -40 / +65 -40 / +65
Temperature zero drift  < 2 < 2 < 2 < 3 < 5 < 3
Temperature sensitivity drift

< 3 < 3 < 3 < 3 < 5 < 3
Linearity < 3 < 1 < 3 < 2 < 2 < 2
Repeatability < 1 < 1 < 1 < 1 < 1 < 1
Expected service life >5 >5 >5 10 10 10
Relative humidity (% HR) 0 – 95 % condensation free 15 – 95 % condensation free
Pressure range Pa±10%
Cross sensitivity All inflammable compounds All gases with either very high or very low thermal
conductivity
Poisons Silicon compounds, certain halogen compounds,
and some organometallic compounds.
None
Effect of O2–enriched or
depleted atmospheres
15 % O2min. 10 % O2min. 15 % O2min. None
Biasing time 90 sec 120 sec

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Measured at 50% LEL of the considered gas
In % full scale
On the range: -10°C to +40°C.
(In years) Expected values based on “typical” site operating conditions without poison or
corrosive compounds.
Lifetime can significantly vary (better or worse) depending on real site conditions.
Measure available but full performance may require longer time. See Chapter 2.
As soon as a gas or vapour is flammable, it is may be sensed by the combustible gas detector.
Sensitivity (regarding LEL range) and the response time depend on the compound. Basically, as
the molecule size increase, the response time increase and the sensitivity decrease.
Table below gives some examples of cross sensitivity:
Detector
CH4
H2
C4H10
Injected gas CH4H2C4H10 CH4H2C4H10 CH4H2C4H10
Cross sensitivity*
1
0.95
1.7
1.06
1
1.7
0.57
0.54
1
τ
(0-90%) (sec) <15 <10 <20 <15 <10 <20 <15 <10 <20
If CH4 (50% LEL) is injected on a H2 detector, the concentration displayed will be 47.2%
(50/1.06)*
For external probe versions, temperature range is limited to -20 / +60 °C
Under conditions of natural diffusion and available on any of the outputs of the device (HART,
4-20mA, ...).