TR 141Ex Series ATEX zone II

The temperature sensors TR141Ex are designed to meet the requirements of EN 60079-0:2013+A11:2014, EN 60079-7:2016 and EN 60079-31:2014, as amended. Temperature sensors marked on the nameplate with II3G Ex ec IIC T6…T2 Gc and II3D Ex tc IIIC T60°C…230°C DC can be used in potentially explosive environments – Equipment Group II, Zone 2 and Zone 22.

The temperature sensors operate on the principle of defined dependency of the change of property of the sensor and the change of temperature. They are not capable of generating sparks, arcs or high surface temperatures. The temperature range for use in potentially explosive environments is limited by the insulation of the cable used and specifically specified in the operating instructions – the specified measuring range must not be exceeded, even for a brief period. The supply cable may have an outer PVC, silicone or PTFE (Teflon) insulation and may be either shielded or unshielded. According to EN 60 529, as amended, the sensors meet IP 65 in the case of PTFE (Teflon) cable insulation and IP 67 in the case of other supply cables.
The temperature sensors are designed to be operated in a chemically non-aggressive environment, the use must be chosen regarding the temperature and chemical resistance of the case and the supply cable.

TR 141Ex temperature series - The temperature sensors can be used to measure the surface temperature of solids with a smooth surface. They consist of a cuboid-shaped metal measuring case, which contains a temperature sensing element and supply cable. The metal sensor case can be made of stainless-steel DIN 1.4301 or aluminium alloy (Duralumin). The case contains a mounting hole, allowing the sensor to be mounted on the to-be-measured surface. The wiring of the sensors can be 2-wire, 3-wire or 4-wire. The supply cable may have an outer PVC, silicone or PTFE (Teflon) insulation and is either shielded or unshielded. In the case of shielded supply cables, the shielding is not connected to the case or to the temperature sensing element. The total case length can be selected from the range of 40 to 60 mm, depending on the sensor case design and type of the supply cable.

DECLARATION, CERTIFICATES, CALIBRATION The manufacturer issues an EU Declaration of Conformity The declaration is issued based on the following certificates issued by the Physical-Technical Testing Institute Ostrava – Radvanice:
  • TR141Ex Certificate No. FTZÚ 16 ATEX 0145X
Calibration – All temperature sensors pass through the final metrological inspection, which is carried out by comparing with standards or working gauges. Continuity of the standards and working gauges is ensured within the meaning of Section 5 of Act No. 505/1990 on metrology, as amended. The manufacturer offers the possibility to supply sensors calibrated in the laboratory of SENSIT s.r.o. (according to the requirements of EN ISO/IEC 17025, as amended) or in an accredited laboratory.


Sensor type TR 0141Ex
Standard types of sensing elements* all types (Pt 100, Pt 1000, Ni 1000, Ni 10000,Ni 2226=T1, NTC, PTC, KTY, TSiC, DALLAS, TC K, TC J, TC T and so on)
Measuring range T2: -40 ≤ Ta ≤ 230 °C cable PTFE(teflon)
T3: -30 ≤ Ta ≤ 180 °C cable SILIKON
T5: -20 ≤ Ta ≤ 95 °C cable PVC do 105 °C
T6: - 20≤ Ta≤ 60 °C cable PVC
Accuracy class Ni sensors: class B,Δt = ± (0.4 + 0.007|t|), for t≥ 0;Δt = ± (0.4 + 0.028|t|), pro t≤ 0 in °C;
Pt sensors: class B acc. to EN 60751,Δt = ± (0.3 + 0.005|t|) in °C
NTC 20 kΩ: ± 1 °C for range 0 °C to 70 °C
Sensor connection 2-wire, 3-wire, 4-wire
Insulation resistence min. 200 MΩ at 500 V DC, at the temperature 15 to 35 °C, max. relative humidity 80 %
Electric strenght ATEX 1 000 V DC during the period 1 s, at the temperature 15 to 35 °C, max. relative humidity 80% according to the article 6.8.1 of the EN 60079-15 ed. standard
Ingress protection IP 67 for cables with PVC and SILICONE insulation in accordance with EN 60529, as amended
IP 65 for cables with PTFE (teflon) insulation in accordance with En 60529, as amended
Types of lead-in cables and their thermal resistivity -50 to 200 °C MCBE-AFEP, 2 x 0,34 and 4 x 0,15 mm2 silicone insulation
-40 to 105 °C FLRYWYW, 2 x 035 and 4 x 0,35 mm2, PVC insulation up to 105 °C
-30 to 80 °C LiYCY 2 x 0,34 mm2, PVC insulation
-50 to 260 °C PTFE
Weight according to the length of the cable, minimum 0.15 kg
Basic cuboid size 12 x 8 mm
Inner diameter of the case in the cable sealing area 4.5 mm to 6 mm
Case length 40 to 60 mm
Case material stainless steel DIN 1.4301, DIN 1.4571, DIN 1.4404
Time response (on flat surface without paste) Stainless steel τ0,5 ≤ 10 s
dural τ0,5 ≤ 8 s

*) Certain technical specifications of thermocouple sensors (lead wires, IP rating, etc.) may differ with different types.
Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.

Dimensional Draft

Wiring Diagram

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