The temperature sensors TR011Ex 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 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 with regard to the temperature and chemical resistance of the case and the supply cable.
- Temperature sensors serie TR 011 – 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 measuring case with a diameter of 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 fixed part of the case is a mounting fitting with different thread sizes and OK hexagon, allowing direct installation in the measured location without the use of a thermowell. 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 length can be selected from the range of 40 to 400 mm, depending on the sensor case diameter.
DECLARATION, CERTIFICATION, CALIBRATION
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:
- TR011Ex Appendix No. 2 to Certificate No. FTZÚ 07 ATEX 0143X
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.
