Nonhazardous Locations

Hazardous (Classified) location electronic
Class I / Division 1 / Groups ABCDClass I / Zone 1/ / Ex ia IIC Gb / AEx ia IIC Gb
Class II / Division 1 / Groups EFG
Class III / Division 1 / Hazardous Locations
Class II / Zone 21 / Ex ia IIIC Db / AEx ia IIIC Db

Avoiding electrostatic
charge on the M12connector!

3

4

2

1Installation Notes TM371, TM372
General- CSA approved apparatus must be installed in accordance with manufacturer’s instructions.
- Install per Canadian Electrical Code or National Electrical Code (NFPA 70).
- Use supply wires suitable for 5°C above surroundings.
- The housing of the thermometer must be connected to the local potential equalization or installed in agrounded metallic piping or tank respectively.
- It cannot be taken for granted that when using compression fittings with non-metallic olives that there is asecure grounding when installing in a metal system. This means that an additional safe connection to the local
potential equalization needs to be used.

Power supply

1 (BN) +2 (WH)
3 (BU) 4 (BK)
430V
(4...20 mA)

1
12...30 VDC(4...20 mA)

2

CSA certified AssociatedApparatus or aupply withsuitable barrier with max.
electrical specifications
from table below

M12x1e.g. TM371

INTRINSICALLY SAFE
Ex ia IIC T6…T1 Ga/Gb
Class I, Zone 0/1 AEx ia IIC T6…T1 Ga/Gb
Intrinsic Safe for Class I, Division 1, Groups A, B, C, D

Ta(see thermal data)

DUST IGNITION PROOF
Ex ia IIIC T85°C…T165°C Da/Ex ia IIIC T135°C Db
Zone 20/21 AEx ia IIIC T85°C…T165°C Da/AEx ia IIIC T135°C Db
Class II, Division 1, Groups E, F and G, Class IIIHazardous (Classified) location process
Class I / Division 1 / Groups ABCDClass I / Zone 0 / Ex ia IIC Ga / AEx ia IIC GaClass II / Division 1 / Groups EFG
Class III / Division 1 / Hazardous Locations
Class II / Zone 20 / Ex ia IIIC Da / AEx ia IIIC Da- CSA approved associated apparatus or barrier is required.
- Warning: Substitution of components may impair intrinsic safety.
Avertissement : La substitution de composants peut compromettre la sécurité intrinsèque.
- The type of protection changes as follows when the devices are connected to certified intrinsically safe circuitsof Category ib: Ex ib IIC.
When connecting to an intrinsically safe ib circuit, do not operate the sensor at Zone 0 without any
thermowell according to CSA/UL 60079-26.
- The thermometer is not isolated to the metallic enclosure in conformance with CSA/UL 60079-11 chapter
6.3.13.
- Associated equipment with galvanic isolation between the intrinsically safe and non-intrinsically safe circuits
is required for supplying.
- For interconnecting the thermometer with the optionally provided cable sets following parameters can beassumed:Cc = 200pF/m and Lc = 1μH/m.
- Without any thermowell (option b = 0) install the thermometer in a partition wall and process connection as
required in standard CSA/UL 60079-26 in reference to its ultimate application.
- With a provided thermowell (option b = 1, 2, 3) also install a process connection with a tight joint of at least
IP67 (according to IEC 60529) between one hazardous zone area to the other as required in CSA/UL 60079-26
in reference to its ultimate application

Tp (see thermal data)
Local potential equalization
TypeTM371,TM372

Electrical data
Power supply
Connecting socket
Pin 1(+) and 3(-)

Configuration
Connecting socket
Pin 2 and 4Ui
Ii
PiPiCiLi====30V DC
100 mA
750 mW
600 mW (for dust applications only)
negligibly small
negligibly small

Ui
Ii
PiPi
Ci
Li


====30V DC
100 mA
750 mW
600 mW (for dust applications only)
negligibly small
negligibly small

Pfanzelt

2022-05-13

10000013282-

Pfanzelt

2022-05-12

TM371, TM372

1:1-A4---CONTROL DRAWING CSA
Ex ia IIC, Ex ia IIIC

71606925
XA02869T/09/EN/01.22

Series1 of 2NONINCENDIVE Field WIRING- CSA approved associated apparatus or barrier is required.
- Warning: Do not disconnect equipment unless power has been switched off or the area is known to be nonhazardous.
- Warning: Substitution of components may impair suitability for Class I, Division 2.
- Avertissement: La substitution de composants peut rendre ce matériel inacceptable pour les emplacements
de Class I, Division 2.
- Nonincendive field wiring installation:
The Nonincendive Field Wiring Circuit Concept allows interconnection of Nonincendive Field Wiring
Apparatus with Associated Nonincendive Field Wiring Apparatus or Associated Intrinsically Safe Apparatus
or Associated Apparatus not specifically examined in combination as a system using any of the wiring
methods permitted for unclassified locations, when Voc  Vmax, Ca ³ Ci + Ccable, La ³ Li + Lcable.
For these current controlled circuits, the parameter Imax is not required and need not to be aligned withparameter Isc and It of the Associated Nonincendive Field Wiring Apparatus or Associated Apparatus.

Thermal data:

CONDITIONS OF ACCEPTABILITY- The above model is permanently connected, Output of power supply below the limits of clause 6.3.1 and 9.4,
max. 30 Vdc, supplied by an external certified power source, not part of this investigation. The DC output of
this separately certified power source shall be below the limits of clause 6.3.1 of IEC 61010-1:2010),
Pollution Degree 2. Mode of operation: Continuous.
- From the safety point of view, the thermometer shall be considered to be connected to earth(for details see first page of Control drawing).
- It is not permitted to use the configuration pins 2 and 4 when the thermometer is connected to electricalsupply.
- Electrostatic charge on the M12 connector shall be avoided in dust explosive atmospheres during operationand maintenance.
- When installing the product within two different Zones ( Zone 0/1 or Zone 20/21) containing parts withdifferent EPLs i.e. either Ga/Gb or Da/Db, a thermowell as a partition wall (with a thickness at least 1mm) for
the Zone 0 installation and a process connection with a tight joint of at least IP67 (according to IEC 60529)
has to be installed between one hazardous zone area to the other as required in IEC 60079-26:2014.
- The temperature class of the transmitter and temperature sensor is dependent on the ambient temperatureand the process temperature (see Thermal data).

TypeTemperature
class
TM371, T6
TM372 T5
T4

Ambient temperature range
housing Ta-40°C  Ta  +55°C-40°C  Ta  +70°C-40°C  Ta  +85°C

TypeInsert
diameter
TM371, 3mm,
TM372 6mm

Process temperature range
Tp-50°C  Tp  +75°C-50°C  Tp  +90°C-50°C  Tp  +125°C-50°C  Tp  +190°C-50°C  Tp  +285°C-50°C  Tp  +435°C

Temperature class

TypeAmbient temperature range
housing Ta-40°C  Ta  +55°C-40°C  Ta  +70°C-40°C  Ta  +85°C

Maximum surface
temperature housing
T135°C
T135°C
T135°C

Process temperature range
Tp-50°C  Tp  +75°C-50°C  Tp  +90°C-50°C  Tp  +125°C-50°C  Tp  +150°C

Maximum surface temperature sensor

TM371,TM372

TypeInsert
diameter
TM371, 3mm,TM372 6mm

Pfanzelt

2022-05-13

10000013282-Pfanzelt

2022-05-12

TM371, TM372

1:1-A4---

CONTROL DRAWING CSA
Ex ia IIC, Ex ia IIIC

T6
T5
T4
T3
T2
T1

T85°C
T100°C
T135°C
T165°C

71606925
XA02869T/09/EN/01.22

Series2 of 2