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TG8Ex serie
ATEX zone II

TG8Ex serie
ATEX zone II

TG8Ex,TG 8 Ex

TG8Ex serie
ATEX zone II
On request



The temperature sensors TG8Ex are designed to meet the requirements of EN 60079-0:2013+A11:2014, EN 60079-7:2016 and EN 60079-31:2014, as amended. 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 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 sensors are designed to be operated in a chemically non-aggressive environment, the use must be chosen with regard to the temperature and chemical resistance of the case and the supply cable.

  • Serie TG8Extemperature sensors – In combination with the JTG8 thermowell or central holder, supplied as accessories, the sensors can be used for temperature measurement of gaseous and liquid substances in piping or air conditioning ducts or separately for temperature measurement of solids. They consist of a metal neasuring case with a diameter of 5.7 mm, 6 mm, 7 to 10 mm or 12 mm, which contains a temperature sensing element and supply cable. The metal sensor case can be made of stainless steel DIN 1.4301, DIN 1.4404, DIN 1.4571. The wiring of the sensors can be 2-wire, 3-wire or 4-wire. In the case of shielded supply cables, the shielding is not connected to the case or to the temperature sensing element. The case lenght can be selected from the range of 40 to 400 mm, depending on the sensor case diameter.


    The manufacturer issues an EU Declaration of Conformity The declaration is issued on the basis of the following certificates issued by the Physical-Technical Testing Institute Ostrava – Radvanice:

    • TG8Ex Appendix No. 2 to Certificate No. FTZÚ 07 ATEX 0142X

    Calibration – The final metrological inspection – comparison with standards or working instruments – is carried out for all the products. Continuity of the standards and working measuring instruments is ensured within the meaning of the Section 5 of Act no.505/1990 on metrology. The manufacturer offers a possibility to supply the sensors calibrated in SENSIT s.r.o.’s laboratory (according to requirements of the EN ISO/IEC 17025 standard, as amended) or in an Accredited laboratory.  


    Technické parametry

    Sensor type TG8Ex
    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 Y -- T2: - 40 ≤ Ta ≤ 230 °C cable PTFE(teflon)
    T3: -30 ≤ Ta ≤ 180 °C cable SILICONE
    T5: -20 ≤ Ta ≤ 95 °C cable PVC up to 105 °C
    T6: - 20 ≤ Ta≤ 60 °C cable PVC
    Recommended/ maximum
    DC measuring current
    1 mA / 3 mA for the sensors with sensing element Pt 100
    0.5 mA / 1.5 mA for the sensors with the sensing element Pt 500
    0.3 mA / 0.8 mA for the sensor with the sensing element Pt 1000
    0.3 mA / 1 mA for other sensors
    DC power consumption of sensing element
    0.05 mW/ 1 mW for the sensors with the sensing element NTC 20 kΩ
    Accuracy class Ni sensing elements: B class, Δt = ± (0.4 + 0.007t), for t ≥ 0; Δt = ± (0.4 + 0.028|t|), for t ≤ 0 in °C;
    Pt sensing elements: B class according EN 60751, Δt = ± (0.3 + 0.005|t|) in °C
    NTC 20 kΩ: ± 1 °C for the range 0 °C to 70 °C
    Sensor connection 2-wire, 3-wire, 4-wire
    Insulation resistance min. 200 MΩ at 500 V DC, at the temperature 15 °C to 35 °C, maximum rel. humidity 80 %
    Dielectric strength (ATEX) 1 000 V DC during the period 1 s, at the temperature 15 °C to 35 °C, maximum rel. humidity 80 % according to the article 6.8.1. of the EN 60079-15 ed. 2 standard, as amended
    Ingress protection IP 67 for cables with PVC and SILICONEinsulation 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 a 4 x 0.15 mm2, silicone insulation
    -40 to 105 °C FLRYWYW, 2 x 0.35 a 4 x 0.35 mm2, PVC insulation up to 105 °C
    -30 to 80 °C LiYCY 2 x 0.34 mm2, PVC unsulation
    -50 to 260 °C PTFE insulation
    Weight according to the length of the cable, minimum 0.15 kg

    *) Certain technical specifications of thermocouple sensors (lead wires, IP rating, etc.) may differ with different types.


    TG8 Ex

    Stem length

    40 to 400 mm
    Stem diameter 5.7 mm, 6 mm, 7 to 10 mm, 12 mm
    Material of the stem stainless steel DIN 1.4301, DIN1.4571, DIN 1.4404
    Time response τ0,5 ≤ 5 s, τ0,9 ≤ 12 s for stem ⌀ 5.7 mm
    τ0,5 < 9 s, τ0,9 ≤ 20 s for stem ⌀ 6 mm
    τ0,5 < 14 s, τ0,9 ≤ 35 s for stem ⌀ 7 to 8 mm
    τ0,5 < 25 s, τ0,9 ≤ 60 s for stem ⌀ 9 to 10 mm
    τ0,5 < 35 s, τ0,9 ≤ 80 s for stem ⌀ 12 mm

    Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.

    Rozměrový náčrt

    Schéma zapojení


    • length of the case of the sensor
    • possibility to encase two sensing elements
    • accuracy class A (with the exception of sensors Ni 10000/5000, Ni 10000/6180, T1 = Ni 2226, thermistor NTC 20 kΩ)

    Soubory ke stažení

    014.08en.pdf 014.08en.pdf

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    Detail Detail


    Detail Detail


    SENSIT s.r.o.

    Školní 2610, 756 61 Rožnov pod Radhoštěm

    +420 571 625 571



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