GHM Greisinger GTF 101-Ex Series User manual

Z31.0.XY.6C-17
GHM GROUP - Greisinger
GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Tel.: [phone] | [email protected] | www.greisinger.
Temperature probes for
potentially explosive atmospheres
Operating Manual GTF 101-Ex …
GTF 102-Ex …
0158

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 2 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
INDEX
1GENERAL NOTE ................................................................................................................3
2SAFETY...............................................................................................................................3
2.1 Intended Use..................................................................................................................3
2.2 Safety signs and symbols ..............................................................................................3
2.3 Skilled personnel............................................................................................................4
2.4 Safety guidelines............................................................................................................4
2.4.1 General information............................................................................................................ 4
2.4.2 Additional safety instructions for zone 0 or zone 20............................................................ 5
2.4.3 Additional safety instructions for zone isolation .................................................................. 5
3PRODUCT DESCRIPTION..................................................................................................5
3.1 General information........................................................................................................5
3.2 Scope of delivery............................................................................................................5
3.3 Identification...................................................................................................................6
3.4 Which temperature probe, transmitter do I need?..........................................................6
3.5 Probe types....................................................................................................................7
3.6 Connection values..........................................................................................................8
3.6.1 Approval 'e' increased safety.............................................................................................. 8
3.6.2 Approval 'i': intrinsically safe............................................................................................... 8
4NOTES ON OPERATION IN POTENTIALLY EXPLOSIVE ATMOSPHERES....................9
4.1 Self-heating of the probe................................................................................................9
4.2 Permissible ambient temperatures and neck pipe........................................................11
4.2.1 For Types GTF 101-Ex-i-... and GTF 102-Ex-i.................................................................. 11
4.2.2 For Types GTF 101-Ex-e-... and GTF 102-Ex-e............................................................... 11
5INSTALLATIONS INSTRUCTION.....................................................................................12
5.1 Connection assignment for Pt100 and Pt1000.............................................................12
5.2 Connection assignment for thermocouple type K.........................................................12
5.3 Cable and conductor gland (CCG)...............................................................................12
6SPECIFICATION ...............................................................................................................12
6.1 Dimensions ..................................................................................................................14
7DECOMMISSIONING, RESHIPMENT AND DISPOSAL...................................................14
7.1 Reshipment..................................................................................................................14
7.2 Disposal instructions....................................................................................................14
8ORDERING INFORMATION .............................................................................................15
8.1 Ordering code for GTF 101-Ex-... probes.....................................................................15
8.2 Ordering code for GTF 102-Ex-... probes.....................................................................16
9EU - DECLARATION OF CONFORMITY..........................................................................17
10 EU - TYPE EXAMINATION CERTIFICATE....................................................................18

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 3 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
1 General note
Please read this document carefully and familiarize yourself with the operation of the device
before using it. Keep this document within easy reach near the device for consulting in case of
doubt.
2 Safety
2.1 Intended Use
These resistance thermometers and thermocouples are designed for temperature measure-
ment in explosion-prone areas in industrial applications.
The measuring range, depending on the version, covers temperatures from -200 °C +600 °C
(900 °C with thermocouple), in wich this can be limited due to the temperature class of the
Ex area.
The probes are intended exclusively for use within the technical limit values indicated on the
type plate and in this operating manual.
Only technically qualified personnel are permitted to carry out installation, commissioning,
operation and decommissioning. The qualified personnel must have carefully read and un-
derstood the operating manual before starting work.
The compatibility of the measuring medium and the housing material getting in touch with the
medium, must be assured so that no impairments of operational safety can arise
The liability and warranty of the manufacturer for damages and consequential damages are
voided with misuse, disregard of this operating manual, assignment of inadequately qualified
technical personnel and arbitrary modifications of the product.
2.2 Safety signs and symbols
Warnings are labelled in this document with the followings signs:
Caution!
This symbol warns of imminent danger, death, serious injuries and significant
damage to property at non-observance
Caution!
This symbol indicates a potentially dangerous situation in explosion-prone
areas that can result in death or severe injuries if not avoided.
Attention!
This symbol warns of possible dangers or dangerous situations which can
provoke damage to the device or environment at non-observance.
Note!
This symbol points out processes which can indirectly influence operation or
provoke unforeseen reactions at non-observance.

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 4 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
2.3 Skilled personnel
are persons who are familiar with the set-up, installation, commissioning and operation of the
product and have appropriate qualification for their work. For example:
•Training or instruction and/or authorization to activate, deactivate, disconnect, ground and
identify power circuits and devices/systems in accordance with the standards of safety en-
gineering.
•Training or instruction in accordance with the standard of safety technology for care and use
of suitable safety equipment.
•Knowledge about the installation of devices in explosion-prone areas.
2.4 Safety guidelines
This device has been designed and tested in accordance with the safety regulations for elec-
tronic devices. However, its trouble-free operation and reliability cannot be guaranteed unless
the standard safety measures and special safety advises given in this manual will be adhered
to when using the device.
2.4.1 General information
1.
Requirements of Directive 2014/34/EU (ATEX) and IECex must be observed
The respective national regulations for Ex use must also be complied with (e.g.
EN 60079-10 and EN 60079-14).
2.
Install the GTF 101-Ex and GTF 102-Ex according to the manufacturer's specifi-
cations and the valid standards and regulations.
3.
The temperature probe must only be connected to the feed devices provided for
this purpose and approved for operation of the system for passive resistance
sensors and thermocouples according to the appropriate standard. The electrical
operating values must not be exceeded.
4.
In ignition protection rating 'e' (increased safety), a fuse corresponding to the
specifications of EC type examination certificate and suitable for a possible short-
circuit current of 1500 A must be installed upstream from every temperature
probe in a suitable manner ..
5.
In ignition protection rating 'i' (intrinsically safe) the probe must be earthed!
6.
The ambient temperatures for the cable sleeve must be observed.
7.
The connections must be made according to the connection diagram.
8.
Depending on the measuring current, the self-heating at the sensor tube must be
considered for the application.
The sum of the process temperature and the temperature from self-heating
of the probe tube must always be less than the ignition temperature of the
medium. The required safety distances must be observed.
9.
The compatibility of the device materials used with your probe version and the
measuring medium must be assured.
10.
Use of the probe tube or housing as a climbing aid (e.g. for installation purposes)
or as a holder for additional external loads is not permitted!
11.
Mechanical modifications of the product (e.g. application of material by means of
painting, removal of material by means of drilling into the housing) are not permit-
ted!

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 5 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
2.4.2 Additional safety instructions for zone 0 or zone 20
These instructions must also be observed if the probe and connection sleeve are
installed in this zone.
1.
Explosion-prone mixtures must only form under the following atmospheric condi-
tions: -20°C ≤ Ta ≤ +60°C and 0.8 bar ≤ p ≤ 1.1 bar.
2.
The limited environmental temperatures must be complied with (see chapter 4.1)
3.
The feeding supply circuit must satisfy ignition protection rating Ex ia IIC and/or
Ex ia IIIC.
2.4.3 Additional safety instructions for zone isolation
These instructions must also be observed if the probe is installed in Zone 0 and/or
20 and the head in zone 1, 2, 21 or 22.
1.
Only use versions that are suitable for zone separation!
2.
A gas-tight must be assured after installation!
3 Product description
3.1 General information
The GTF 101-Ex and GTF 102-Ex temperature probes are designed as integrated probes for
use in explosion-prone areas. The probes are very small, so they can be used in places that
are difficult to access. Also, the probes are assembled complete with connection cable, so the
connection must be made directly to the terminal only.
The measuring insets of the GTF 111-Ex and GTF 112-Ex are firmly sealed and cannot be
exchanged. They are available in 2 different groups of sensor elements,
resistance thermometer: Pt 100, Pt 1000 or thermocouple: type K.
Only mineral-insulated resistance thermometers and/or mineral-insulated thermocouples are
used as sensor elements.
The range of use, depending on the version, theoretically covers a medium temperature of
-200 °C to +600 °C (900 °C), which is limited by the temperature class of the Ex area!
At process temperatures above 100 °C the probe must have a correspondingly large neck pipe
length. The neck tube length must be selected such that the permissible environmental tem-
perature of the head is not exceeded or fallen below, depending on the measuring temperature
and the installation situation.
GTF 101-Ex must have a sufficient distance from the compression fitting to the sleeve at tem-
perature being kept above 100 °C or below -50 °C. For this purpose, an additional tubular
sleeve is provided as a stop for the neck length.
There a multitude of base types of GTF 101-Ex and GTF 102-Ex available that can all be
custom assembled.
We recommend the series GTF 103-Ex for applications with head transmitters or terminal
block.
3.2 Scope of delivery
Temperature sensor, operating instructions

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 6 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
3.3 Identification
Examples for type plates








   


   

Base type

Extension of the variant code
(Type designation = + )

Approval number

Ex identification

Code for month/year of manufacture: MY
M: A = January, B = February, ..., L = December
Y: P = 2015, Q = 2016, R = 2017, ..., Z = 2025
(Example: EQ = May 2016)

Serial number
3.4 Which temperature probe, transmitter do I need?
You can easily determine the temperature probe or temperature transmitter for your specific
application from the table below.
Zone 0 or 20
If the temperature must be detected in Ex Zone 0 or 20, the appropriate GTF101-Ex or
GTF102-Ex temperature probe in ignition protection class II 1G Ex ia IIC... or II 1D Ex ia IIIC...
can be used.
Only ATEX-approved devices can be used as display and/or control devices that meet the re-
quirements of the corresponding zones.
Zone 0/1 or 20/21 (zone-separating)
If the temperature must be detected in Ex Zone 0 or 20 and the probe connection is outside of
this zone, the probe must be installed as appropriately zone-separating. For this purpose, the
appropriate, suitable GTF101-Ex or GTF102-Ex temperature probes in ignition protection class
II 1/2G Ex ia IIC... or II 1/2D Ex ia IIIC... are used.
Only ATEX-approved devices can be used as display and/or control devices that meet the re-
quirements of the corresponding zones.

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 7 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
Zone 1, 2 or 21, 22
If the temperature must be detected in Ex Zone 1, 2 or 21, 22, the appropriate GTF101-Ex or
GTF102-Ex temperature probe in ignition protection class II 2G Ex ia IIC..., II 2G Ex em IIC...
or II 2D Ex ia IIIC..., II 2D Ex mb IIIC... can be used.
If the display and/or control device is in Zone 1, 2 or 21, 22, only ATEX-approved devices of
the appropriate zone can be used.
If the display and/or regulating device is outside of the Ex area, Ex approval is not required if
the GTF 101/102-Ex temperature probe in ignition protection class Ex em IIC... or Ex mb IIIC...
is used and the safety instructions from chapter Fehler! Verweisquelle konnte nicht gefun-
den werden. as well as the electrical supply data are observed.
Table 1: Overview of use and requirements for the GTF 101-Ex-... and
GTF 102-Ex-... in the individual Ex zones.
Ex zone
0
20
Zone isolation
1, 2
21, 22
0/1
20/21
Usable
types
GTF 101-Ex-i-00-..
GTF 102-Ex-i-00-..
GTF 101-Ex-i-20-..
GTF 102-Ex-i-20-..
GTF 102-Ex-i-0A-..
GTF 102-Ex-i-2A-..
GTF 101-Ex-i-01-..
GTF 102-Ex-i-01-..
GTF 101-Ex-e-01-..
GTF 102-Ex-e-01-..
GTF 101-Ex-i-21-..
GTF 102-Ex-i-21-..
GTF 101-Ex-e-21-..
GTF 102-Ex-e-21-..
ATEX iden-
ti-fication
of probes
II 1G Ex ia IIC
T6 Ga
Ta = -20 … +60 °C
II 1D Ex ia IIIC
T80°C Da IP65
Ta = -20 … +60 °C
II 1/2G Ex ia IIC
T6 Ga/Gb
II 1/2D Ex ia IIIC
T80°C Da/Db IP65
II 2G Ex ia IIC
T6 Gbor
II 2G Ex e m
IIC T6 Gb
II 2D Ex ia IIIC
T80°C Db IP65
or
II 2D Ex mb IIIC
T80°C Db IP65
3.5 Probe types
The GTF 101-Ex and GTF 102-Ex are available in a variety of different versions, depending on
the selected sensor element, the medium temperature, the ambient temperature range or the
necessary protection.
Standard probes have a probe length of 100 mm, a probe tube diameter of 6 mm, (neck tube
the GTF 101-Ex = 8mm) and the GTF 102-Ex has a thread G = 1/2".
We assemble the sensor according to your specifications, as far as the specifications for the
GTF 101-Ex -... or GTF 102-Ex- ... are possible (see technical data).
zone 1, 2, 21 or 22
zone 1, 2, 21 or 22
zone 0 or 20
zone 1, 2, 21 or 22
zone 0 or 20

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 8 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
GTF 101-Ex-...-K-...
GTF 101-Ex-...-M-...
GTF 102-Ex-...-XX-K-...
GTF 102-Ex-...-XX-M-...
3.6 Connection values
3.6.1 Approval 'e' increased safety
Measuring current circuit:
Rated voltage = 4 V
Rated measuring current = 10 mA
Maximum permissible short-circuit current for current circuit:
for version with sensor Pt100 or Pt1000: 500mA
for version with sensor thermocouple type K: 100 mA
Observe the notes in chapter 4
3.6.2 Approval 'i': intrinsically safe
Measuring circuit only for connection to certified intrinsically safe power circuits with the fol-
lowing maximum values:
Ui = 30 V
Ii = 300 mA
Pi = see table1)
CI = negligibly small*
Li = negligibly small*
Cabel
Sensor
Ci
Li
Silicone cable
Pt100/Pt1000
100 pF / m
1 µH / m
PVC cable
Pt100/Pt1000
100 pF / m
1 µH / m
Teflon cable
Pt100/Pt1000
100 pF / m
1 µH / m
Silicone compensating cable
Typ K
200 pF / m
2 µH / m
1)The maximum permissible output of the connected intrinsically safe power circuit Pi depends
on the temperature class of the temperature sensor, the sensor diameter, the zone in which
the sensor is used an the process temperature. Pleas observe the notes in chapter 4

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 9 of 20
_________________________________________________________________________________________________________________
GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
Maximum permissible power Pi and permissible ambient temperature Ta,
depending on temperature class, zone and sensor diameter D
temperature class
Zone
Pi [mW]
Ta
D = 3, 4, 5 mm
D >= 6 mm
T6
0
15 mW
15 mW
-20...60 °C
T5
0
80 mW
200 mW
-20...60 °C
T4
0
250 mW
600 mW
-20...60 °C
T3
0
650 mW
1200 mW
-20...60 °C
T2
0
1400 mW
1500 mW
-20...60 °C
T1
0
1500 mW
1500 mW
-20...60 °C
T6
1, 2
80 mW
250 mW
-20...60 °C
T5
1, 2
80 mW
200 mW
-20…80 °C
T4
1, 2
300 mW
750 mW
-20…80 °C
T3
1, 2
750 mW
1500 mW
-20…80 °C
T2
1, 2
1500 mW
1500 mW
-20…80 °C
T1
1, 2
1500 mW
1500 mW
-20…80 °C
4 Notes on operation in potentially explosive atmos-
pheres
4.1 Self-heating of the probe
A maximum of 20 mW should be applied to the measuring current circuit. When this value is
observed, the temperature on the probe tube increases by a maximum of 4 °C in relation to the
environmental temperature. The GTF 101-Ex and GTF 102-Ex must only be used if this tem-
perature increase in relation to the process temperature is permissible.
If, in the event of a fault, the measuring circuit is loaded more, the self-heating of the sensor
tube must be taken into account.
The sum of process temperature and temperature caused by self-heating at the sensor
tube must always be lower than the ignition temperature of the medium - even in the
event of a fault!
The required safety distances must be taken into account
Over temperature with loading of the measuring current circuit
D = 3 mm D = 6 mm
9 1,5
98 6,6
190 28,4
252 16,4
494 31,1
578 77,0
1013 60,2
1029 116,3
1500 160 90
temperature rise [°C]
power
[mW]
0
20
40
60
80
100
120
140
160
180
0500 1000 1500
excess temperature (°C)
power (mW)
Excess temperatur at probe tube

Z31.0.XY.6C-17 Operating Manual GTF 101-Ex... and GTF 102-Ex… page 10 of 20
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GHM GROUP - Greisinger Tel.: [phone]
GHM Messtechnik GmbH | Hans-Sachs-Straße 26 | 93128 Regenstauf | GERMANY eMail: [email protected]
Overtemperature at the sensor tube, depending on the power supplied and
the sensor tube diameter
Power P
[mW]
D = 3, 4, 5 mm
D >= 6 mm
Self heating Te [°C]
Self heating Te [°C]
10
2
2
25
4
4
50
9
7
100
17
7
200
30
13
300
45
20
500
75
31
650
87
41
750
100
47
1000
133
63
1200
136
71
1500
160
90
Example:
A GTF 101/102 with 6 mm sensor tube is to be used in zone 1 in temperature class T3. Po of
the power supply = 500 mW. Which maximum process temperature Tp is allowed?
T3 = 200 °C. Safety distance*1 for T3 = 5K max. Surface temperature (To) 195 °C
For 500 mW and 6 mm pipes, the self-heating of the probe (Te) is up to 31 °C.
Tp = To - Te = 195 °C - 31 °C = 164 °C
The sensor must therefore be used in this constellation up to a maximum process temperature
of 164 °C
If the same setup is used for Zone 0, the maximum permissible process temperature is:
T3 = 200 °C, for zone 0 only 80%*2 permissible 160 °C, safety distance*1 for T3 = 5K 
maximum permissible surface temperature (To) = 155 °C
self-heating of the temperature sensor is 31 °C
Tp = To - Te = 155 ° C - 31 ° C = 124 °C
For zone 0, the sensor can thus be used in this constellation up to a maximum process tem-
perature of 124 °C
The same probe for use in dust environment (with dust deposition <5mm) with an ignition and
glow temperature of 200 °C is obtained:
To is max. 2/3*3 of the ignition temperature = 133 °C
To is glowing temperature - 75 °C*3 = 125 °C
The lower temperature is taken for To To = 125 °C
self-heating of the temperature sensor is 31 ° C
Tp = To - Te = 125 °C - 31 ° C = 94 ° C
For thicker layers the max. permissible surface temperature*3 decreases further.
Be sure to take into account the safety distances given by the different standards
and regulations.
*1: EN60079-0:2012, Pkt. 26.5.1.3, *2: EN1127-1:2011, Pkt. 6.4.2, *3: EN60079-14, Pkt. 5.6.3