RECKMANN R14 Series User manual

Operating
Instructions
temperature sensors with cable
for operation in hazardous areas
Sensor types:
resistance temperature detector (WTH)
mineral insulated thermocouples (MTE)
Doc 141917 | Rev. 03

RECKMANN GMBH
Werkzeugstr. 19-23
58093 Hagen
T [phone]
F [phone]
M [e-mail]
W www.reckmann.de
© RECKMANN GmbH 2018
These document shall neither be forwarded nor duplicated nor shall the contents be re-used or
shared unless express permission has been given. Offenders will be held liable for the payment of
damages. All rights reserved in the event of registration of patents, working models or design
patents.

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[Basic information]
Table of Contents
1. Basic information ............................................................................................................................... 5
1.1 About this operating manual................................................................................................... 5
1.2 Purpose/function..................................................................................................................... 5
1.3 Use in line with intended use .................................................................................................. 6
1.4 Reasonably foreseeable misuse............................................................................................... 6
1.5 Guarantee and liability ............................................................................................................ 6
1.6 Items supplied.......................................................................................................................... 7
1.7 Contact details ......................................................................................................................... 7
2. Safety ................................................................................................................................................. 8
2.1 Standards and guidelines......................................................................................................... 8
2.2 Labels ....................................................................................................................................... 8
2.3 Formulation of safety information .......................................................................................... 9
3. Operating and process temperatures.............................................................................................. 10
4. Operating conditions........................................................................................................................ 11
5. Type codes of the models ................................................................................................................ 13
5.1 Model R14 with cable ............................................................................................................ 13
5.1.1 Type of protection code ........................................................................................... 14
5.1.2 Electrical and thermal parameters Ga/Gb ............................................................... 15
5.1.3 Electrical and thermal parameters Da/Db ............................................................... 18
5.1.4 Area of use................................................................................................................ 19
5.1.5 Special features of the thermal parameters with thermocouples........................... 22
5.1.6 Area of use................................................................................................................ 23
5.2 Model R14 with plug connector ............................................................................................ 24
5.2.1 Type of protection code ........................................................................................... 25
5.2.2 Electrical and thermal parameters Ga/Gb ............................................................... 26
5.2.3 Electrical and thermal parameters Da/Db ............................................................... 28
5.2.4 Area of use................................................................................................................ 29
5.2.5 Special features of the thermal parameters with thermocouples........................... 31
5.2.6 Area of use................................................................................................................ 32
5.3 Model RKW cable sensor....................................................................................................... 33
5.3.1 Type of protection code ........................................................................................... 34
5.3.2 Electrical and thermal parameters Ga/Gb ............................................................... 34
5.3.3 Electrical and thermal Da/Db parameters Da/Db.................................................... 36
5.3.4 Area of use................................................................................................................ 37
6. Operation/maintenance .................................................................................................................. 39
7. EU Declaration of Conformity .......................................................................................................... 40

4
For your memo

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[Basic information]
1. Basic information
1.1 About this operating manual
This operating manual has been prepared in accordance with the product-specific and
application-relevant specifications from legal requirements, provisions, regulations, technical
standards, guidelines and conventions.
EU - Type Examination Certificate BVS 17 ATEX E 110 X
IECEx Certificate of Conformity BVS 17.0091X
This operating manual allows the user to become familiar with the design and function of the
temperature sensors.
1.2 Purpose/function
The listed temperature sensors with cable for operation in hazardous areas are used for
measuring process temperatures in solid, liquid and gaseous media.
NOTE
The approval is based on the power supply with only one intrinsically safe electrical circuit, which means
that a double sensor is also supplied by only one intrinsically safe electrical circuit.
The temperature class classification depends on the ambient temperature of the connection point
and the electrical characteristics of the intrinsically safe electrical circuit
(U0, I0and P0) with which the sensor is powered and it is described in the following operating
instructions for the different operating conditions.
The standard ambient operating temperature of Ex devices ranges from -20°C to +40°C, unless
otherwise specified by the manufacturer and special codes are not required.
Different atmospheric conditions (e.g. temperatures) are described in the operating instructions
with the applicable operating conditions.
The standard specified safety factor (see DIN EN 60079-0, Sec. 26.5.1.3) for calculation of the
process temperature of less 5 K for temperature classes T6 to T3 (or the characterised
temperatures ≤ 200 °C) and less 10 K for temperature classes T2 and T1 (or the characterised
temperatures ≥ 200 °C) is already taken into account in the following calculations.

6
1.3 Use in line with intended use
The listed explosion-proof temperature sensors are intended exclusively for temperature
measurement within the following standard values and parameters, particularly the electrical and
thermal limits.
1.4 Reasonably foreseeable misuse
Any use that does not conform to the intended use or is outside the standard values and
parameters listed in this document is considered misuse.
1.5 Guarantee and liability
The general terms and conditions of RECKMANN GMBH apply in all instances.
For the warranty to take effect, the following conditions must be met:
#The temperature sensors may only be used as intended within the standard values and
parameters listed in this document.
#No technical modifications may be undertaken by the user.
#Only original spare parts and consumable parts that have been approved by the manufacturer
may be used for repairs.
Limitation of liability
The manufacturer does not accept any liability for damage due to the following circumstances:
#Non-compliance with this manual
#Use outside the intended use
#Use by untrained personnel
#Unauthorised modifications
#Technical changes
#Use of non-approved spare parts

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[Basic information]
1.6 Items supplied
The actual items supplied may vary from the explanations and illustrations described in this
manual due to the use of special models, the utilisation of additional options in the order or the
most recent technical changes.
The obligations agreed in the delivery contract, the general terms and conditions and the terms of
delivery of the manufacturer and the statutory regulations valid at the time of the contract are all
applicable.
1.7 Contact details
RECKMANN GMBH
Werkzeugstr. 19-23
58093 Hagen
T [phone]
F [phone]
M [e-mail]
W www.reckmann.de

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2. Safety
2.1 Standards and guidelines
The explosion-proof temperature sensors have been designed according to the currently
applicable rules of engineering and accepted safety standards.
During the design phase, all basic safety requirements, standards and directives were applied. The
safety of the sensors is documented by the EU Declaration of Conformity (chapter 7 „EU
Declaration of Conformity of Conformity“).
All specifications pertaining to safety relate to the currently valid regulations of the European
Union. Applicable laws and national regulations in other countries must be adhered to.
In addition to the safety instructions in this Manual, general accident prevention and
environmental protection regulations must also be complied with. All requirements of the
operating instructions must be followed without restriction.
2.2 Labels
The temperature sensors documented in our instructions are labelled in accordance with their
model and area of operation (see also Doc 141921).
For operation in mines with potentially explosive atmosphere (methane):
#I M2 Ex ia I Mb
For operation in the hazardous area of Zone 0, 1 and 2 with gas (gas)
#II 1G Ex ia llC T1...T6 Ga,
#II 1/2G Ex ia llC T1...T6 Ga/Gb
#II 2G Ex ia llC T1...T6 Gb
For operation in the hazardous area of Zone 20, 21 and 22 with dust:
#II 1D Ex ia lllC T13S°C Da,
#II 1/2D Ex ia lllC T13S°C Da/Db
#II 2D Ex ia lllC T13S°C Db

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[Safety]
2.3 Formulation of safety information
The safety notices in this document are marked with safety symbols and formulated in
accordance with the SAFE principle. They contain specifications relating to the type and source of
danger, the possible consequences, as well as the prevention of the danger.
DANGER
Warns of an accident that will occur if the instructions are not followed. The accident can lead to severe,
potentially life-threatening injuries or death, e.g. by contact with high-voltage electrical components.
WARNING
Warns of an accident that may occur if the instructions are not followed. The accident may lead to severe,
potentially life-threatening injuries or death,
e.g. by touching high-voltage electrical components.
CAUTION
Warns of an accident that may occur if the instructions are not followed. The accident may lead to
moderate injury, for example burns, injury to the skin or crushing.
WARNING
Warns of potential material damage
NOTE
Important general notice

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3. Operating and process temperatures
Measuring resistors or thermocouples (in the mineral insulated thermocouple MTE) are used as
sensor elements with the following operating temperatures:
Resistance sensors:
#area of application from - 196°C to + 600°C depending on sensor type
(PT100, Ni100 or PT1000)
Thermocouples in mineral insulated thermocouples:
#area of application from - 200°C to max. + 1300°C depending on thermocouple (TC) type
(T, J, E, K, N, R or S)
Protection shells depending on material and welding process:
#area of application from - 196°C to max + 1200°C
Because ambient temperatures of the connection point and the actual process temperature are
often very different, suitable planning is required to ensure that the process and connection head
and/or connection cable are safely decoupled. Separating elements must meet the minimum
requirements of DIN EN 60079-26. The pipe lengths must be adapted to the process temperature.

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[Operating conditions (X-Conditions)]
4. Operating conditions (X-Conditions)
The following special conditions are applicable for installation, operation and replacement of
sensors.
NOTE
The approved ambient temperature ranges for the sensors can be found in the applicable sections of
"Electrical and thermal parameters"
For measurement in different process temperatures the specification of the ambient temperature
range or the temperature class depending on the type is based exclusively on the sleeve,
connection cable and plug connector. The influence of the process temperature on the
temperature of the sleeve (RKW sensor sleeve) must be considered separately in the operation of
the temperature sensors with cables.
Suitable measures, e.g. corresponding selection of the length of the sensor, depending on the
type will ensure that the temperature of the sleeve, connection cable and plug connector is safely
decoupled from the process temperature.
The instructions for use of the manufacturer of all components of the intrinsically safe measure
circuit must be observed with reference to the approved process conditions.
The following applies for the sensors type WR14-O*-****, TR14-O*-****, WR14-P*-****, TR14-
P*-****, RKW-8-*-****, RKW-9-*-**** with code II 1G Ex ia IIC T1 … T6 Ga and
II 1D Ex ia IIIC T135°C Da:
#In gas –explosive areas, the sensors have to be installed in such away, that electrostatic
charging is excluded.
The following applies for the sensors type WR14-O*-****, TR14-O*-****, WR14-P*-****, TR14-
P*-****, WR14-M*-***, TR14-M*-***, RKW-8-*-****, RKW-9-*-****
with code II 1G Ex ia IIC T1 … T6 Ga and II 1D Ex ia IIIC T135°C Da:
#The metal parts of the sensors must be included in the equipotential bonding.
#The installation of the sensors in a partition with EPL Ga/Gb or
Da/Db requirements must be with standardised connections.
#The installation location must be technically sealed.
#The instructions in accordance with IEC / EN 60079-26 must be observed.

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NOTE
The following sensors (or sensors that are not isolated) are considered not isolated or earthed in
accordance with IEC/EN 60079-11:
#Ø 3 mm; more than 4 internal conductors
#Ø < 3 mm
#Ø 3 mm; more than 6 internal conductors
For technical safety reasons these sensors must be connected to the equipotential bonding of the system
throughout the complete length of the intrinsically safe electrical circuit. The special conditions in
accordance with IEC / EN 60079-14 must be observed.
All Reckmann sensors must be used only in accordance with their intended use and must not be
exposed to environmental or process conditions that could affect their "outer case".
For the operation of the temperature sensors with specific customer-approved
Ex i transducers and/or Ex i digital displays, the confirmation of intrinsic safety is required. The Ex i
confirmation and operating instructions of the additional components are part of the Ex
documentation in this case.
If fittings from sources other than the manufacturer are used as wiring and cable entries, they
must have an approval as per IECEx and/or ATEX and must guarantee as a minimum protection
class IP65.
The specific requirements of IEC/EN60079-14 and IEC/EN 60079-25 must be observed for
installation of our sensors.
Metallic materials of the ex-sensors must not exceed the following mass percentages acc. to IEC /
EN 60079-0:
For group II:
for EPL Ga 10% aggregate aluminium, magnesium, titanium, zirconium and
7.5% aggregate magnesium, titanium, zirconium;
for EPL Gb 7.5% aggregate magnesium, titanium, zirconium;
for EPL Gc no requirements concerning temperature sensors.
For group III:
for EPL Da and Db 7.5% aggregate magnesium, titanium, zirconium;
for EPL Dc no requirements concerning temperature sensors.

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[Type codes of the models]
5. Type codes of the models
5.1 Model R14 with cable
Type code for gas/dust explosion hazardous areas
Parts/model
#
-#
#
-#
#
#
#
Sensor type
resistance temperature
detector
WR14
mineral insulated
thermocouple
TR14
Measuring insert model
Type D
O
Type DST
(D with plug connector)
P
Measuring insert diameter
1.5 mm (single sensor only)
150
2.0 mm (single sensor only)
200
3.0 mm
300
6.0 mm
600
8.0 mm
800
Number of sensors
single
1
double
2
Sensors
PT100
WR14
PT100
PT1000
WR14
PT1000
Ni100
WR14
Ni100
Cu-CuNi Type T
TR14
T
Fe-CuNi Type J
TR14
J
NiCr-CuNi Type E
TR14
E
NiCr-Ni Type K
TR14
K
NiCrSi-NiSi Type N
TR14
N

14
Pt13%Rh-Pt Type R
TR14
R
Pt10%Rh-Pt Type S
TR14
s
Connection cables
PVC/PVC
A
PVC/shield/PVC
B
glass silk/silicone
C
glass silk/silicone/glass
silk/shield
D
silicone/silicone/FEP
E
silicone/silicone/shield/FEP
F
Cable connection
Cable with free ends
X
mini-compensation plug
connector
A
Lemo plug connector
B
M12/M8 plug connector
C
Tab. 1: R14 with cable –model/designation
5.1.1 Type of protection code
The type WR14-****-*-* thermometers are intended for operation with the following types of
protection:
#II 1 G Ex ia IIC T1…T6 Ga
#II 1 D Ex ia IIIC T135°C Da

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[Type codes of the models]
5.1.2 Electrical and thermal parameters Ga/Gb
WARNING
Risk of accident due to misuse of the explosion-proof temperature sensors!
Do not use the sensors outside the approved temperature ranges. Do not use the sensors in corrosive
and/or abrasive media.
The following parameters must be observed for operation in the range with "Ga" and "Gb" device
protection level:
Electrical parameters:
maximum input voltage:
Ui
30 V DC
maximum input current:
Ii
100 mA
maximum input power:
Pi
see table
maximum internal capacity:
Ci
negligible
maximum internal inductance:
Li
negligible
Thermal parameters:
T6…T5 (ambient temperature range)
-40°C to +75°C
T4…T1 (ambient temperature range)
-40°C to +100°C
NOTE
For operation in Zone 0 with type of protection II 1 G Ex ia IIC T1…T6 Ga the process temperature is equal
to the ambient temperature.
The ambient temperatures for temperature sensors with connection cable are also determined
and restricted by the operating temperatures of the connection cables and/or plug connectors.
The installation of the temperature sensors with connection cable must conform to the
requirements of IEC / EN 60079-14 and IEC / EN 60079-25.

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Temperature ranges and Ex-relevant electrical parameters:
Compensating/thermocouple extension cables (permanently installed and max. length: 50 m):
PVC/PVC and PVC/shield/PVC
-25°C to +80°C
Gls/silicone and Gls/silicone/Gls/shield
-25°C to +180°C
maximum internal capacity:
Ci
0.2 nF/m
maximum internal inductance:
Li
1 µH/m
WTH connection cables (permanently installed and max. length: 50 m):
PVC/PVC and PVC/shield/PVC
-40°C to +80°C
silicone/FEP and silicone/shield/FEP
-40°C to +180°C
maximum internal capacity:
Ci
0.2 nF/m
maximum internal inductance:
Li
1 µH/m
Plug connectors:
Lemo plug connector
-40°C to +200°C
M12 plug connectors
-40°C to +85°C
Miniature compensation plug connectors
-40°C to +200°C
In the standard installation the sensor does not have a conductive connection to the external
sheath. The insulation thicknesses are defined to meet the requirements for dielectric strength.
NOTE
The following sensors (or sensors that are not isolated) are considered not isolated or earthed in
accordance with IEC/EN 60079-11:
#Ø 3 mm; more than 4 internal conductors
#Ø < 3 mm
#Ø 3 mm; more than 6 internal conductors
For technical safety reasons these sensors must be connected to the equipotential bonding of the system
throughout the complete length of the intrinsically safe electrical circuit. The special conditions in
accordance with IEC / EN 60079-14 must be observed.

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[Type codes of the models]
The permissible process temperature [°C] depends on the maximum input power (Pi) and the
temperature class.
Tprocess = Tmax –Pix Rth
Power ratings
Rth = 281 at WR14-*150-**** and WR14-*200-**** (not isolated):
Temperature class
Pi = 20 mW
Pi = 50 mW
Pi = 250 mW
Pi = 500 mW
Pi = 750 mW
T1 (450°C)
434
426
369
300
229
T2 (300°C)
284
276
219
150
79
T3 (200°C)
189
181
124
55
/
T4 (135°C)
124
116
59
/
/
T5 (100°C)
89
81
24
/
/
T6 (85°C)
74
66
9
/
/
Tab. 2: WR14 –Rth 281 power ratings
Rth = 183 at WR14-*300-****:
Temperature class
Pi = 20 mW
Pi = 50 mW
Pi = 250 mW
Pi = 500 mW
Pi = 750 mW
T1 (450°C)
436
430
394
348
302
T2 (300°C)
286
280
244
198
152
T3 (200°C)
191
185
149
103
57
T4 (135°C)
126
120
84
38
/
T5 (100°C)
91
85
49
3
/
T6 (85°C)
76
70
34
/
/
Tab. 3: WR14 –Rth 183 power ratings

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Rth = 105 at WR14-*600-**** and WR14-*800-****:
Temperature class
Pi = 20 mW
Pi = 50 mW
Pi = 250 mW
Pi = 500 mW
Pi = 750 mW
T1 (450°C)
437
434
413
387
361
T2 (300°C)
287
284
263
237
211
T3 (200°C)
192
189
168
142
116
T4 (135°C)
127
124
103
77
51
T5 (100°C)
92
89
68
42
16
T6 (85°C)
77
74
53
27
1
Tab. 4: WR14 –Rth 105 power ratings
5.1.3 Electrical and thermal parameters Da/Db
WARNING
Risk of accident due to misuse of the explosion-proof temperature sensors!
Do not use the sensors outside the approved temperature ranges. Do not use the sensors in corrosive
and/or abrasive media.
The following parameters must be observed for operation in the range with "Da" and "Db" device
protection level:
Electrical parameters:
maximum input voltage:
Ui
30 V DC
maximum input current:
Ii
100 mA
maximum input power:
Pi
see table
maximum internal capacity:
Ci
negligible
maximum internal inductance:
Li
negligible

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[Type codes of the models]
Thermal parameters:
Intrinsically safe equipment is suitable for full dust covering or for any dust layer if with power
adjustment to the temperature sensors the feasible power corresponds to the values of the
following overview and the sustained short-circuit current is below 250 mA. The intrinsically safe
sensor is marked with "T135°C".
max. ambient/process temperature [°C]
40
70
100
permissible power conversion [mW]
750
650
550
NOTE
For operation in Zone 20 with type of protection II 1 G Ex ia IIIC T135°C Da the process temperature must
be set equal to the ambient temperature.
See the following overview:
Power Pi
ambient/process temperature
750 mW
-40°C to +40°C
650 mW
-40°C to +70°C
550 mW
-40°C to +100°C
5.1.4 Area of use
Gas explosion hazardous areas
The following table shows the usage range of the WTH R14 with cable depending on the ambient
temperature and temperature class:
Model
WTH gas
Marking
Sensor
#
ambient temperature/
temperature class
ATEX
IECEx
WR14-O150, 200*#*X
II 1 G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 75°C (T6…T5)
WR14-O150, 200*#C, D, E, FX
II 1 G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 100°C (T4…T1)
WR14-O300*#*X
II 1 G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 75°C (T6…T5)
WR14-O300*#C, D, E, FX
II 1 G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 100°C (T4…T1)
WR14-O600, 800*#*X
II 1 G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 75°C (T6…T5)

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Model
WTH gas
Marking
Sensor
#
ambient temperature/
temperature class
ATEX
IECEx
WR14-O600, 800*#C, D, E, FX
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 100°C (T4…T1)
WR14-P150, 200*#*A, B, C
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 75°C (T6…T5)
WR14-P150, 200*#C, D, E, FA, B
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 100°C (T4…T1)
WR14-P300*#*X
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 75°C (T6…T5)
WR14-P300*#C, D, E, FX
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 100°C (T4…T1)
WR14-P600, 800*#*X
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 75°C (T6…T5)
WR14-P600, 800*#C, D, E, FX
II 1G
Ex ia IIC T1…T6 Ga
PT100
PT1000
Ni100
-40°C to 100°C (T4…T1)
Tab. 5: Area of use of WTH R14 (Gas)