Terminals for temperature measuring circuits WDU 2.5/TC 2.5 mm² Terminals, W-Series Thermocouple terminals In hazardous area applications, the installation instructions and the rated data specifications for accessories given in the technical appendix must be followed. Width/Length/Height of lowest version max. current / max. cond. cross-section Max. clamping range mm A/mm² mm² Technical data D 10.2 x 60 x 50.5 / 2.5 0.13...2.5 IEC 60584, IEC 60947-7-1 Rated data Rated voltage Rated current Rated cross-section Rated impulse withstand voltage / Pollution severity Gauge to IEC 60947-1 / Flammability class UL94 Approvals Clamped conductors (H05V/H07V) Solid / stranded Flexible / Flexible with ferrule Tightening torque range (terminal screw) Stripping length / Blade size 2 conductors with same cross-section (H05V/H07V) Solid / stranded Flexible / Flexible with ferrule V A mm² IEC Ex e II UL CSA T II 2 G D EN 60079-7 55 1 2.5 2.5 /3 A2 / V-0 mm/- Rated connection 0.5...2.5 / 1.5...2.5 0.5...2.5 / 0.5...2.5 0.4...0.6 Nm (M 2.5) 10 / 0.6 x 3.5 mm mm² mm² 0.5...1.5 0.5...1.5 / 0.5...1.5 mm² mm² SIRA 02ATEX3153 U Weidmüller thermocouple terminals are specially designed for the transmission of very small voltages in temperature measuring circuits. Special current bars ensure that no false signals are transmitted within the terminal when temperature differences between the positive and negative paths exist. This high measuring precision is required, for example, in aircraft engine test rigs, complicated chemical processes, controllers, etc. • Material of current bar corresponds to thermal and compensating conductors • Clear thermocouple marking • 2-pole blocks per thermocouple • Modular width 10 mm Configuration of a temperature measuring circuit 1 2 3 4 5 6 Note CH Ordering data Version AL (NiCr - Ni) type K (Cu - CuNi) type T (Fe-CuNi) type J (Pt 10% - Pt Rh/Pt 13% - Pt Rh) type SR (Pt 10% Rh - Pt 6% Rh) type B (NiCr - CuNi) type E (NiSil - Nicrosil) type N Type WDU 2.5/TC TYP K WDU 2.5/TC TYP T WDU 2.5/TC TYP J WDU 2.5/TC TYP SR WDU 2.5/TC TYP B WDU 2.5/TC TYP E WDU 2.5/TC TYP N Qty. 50 50 50 50 50 50 50 Note Order No. 1024100000 1024200000 1024300000 1024400000 1033700000 1033300000 1041500000 Accessories End plate / Partition plate End bracket Dark beige Wemid Dark beige Wemid Type WAP 2.5-10 WAP 16+35 WTW 2.5-10 Dark beige Wemid WEW 35/2 Width 1.5 mm 1.5 mm Qty. 50 20 Order No. 1050000000 1050100000 8 mm 100 1061200000 1 Thermocouple (sensor) 2 Thermocouple terminals 3 Compensating conductor 4 Reference junction 5 Supply and return conductors 6 Measuring instrument The thermocouple terminals shown in this measuring circuit are used for the thermoelectrical transmission of the thermoelectric voltage from the thermocouple to the reference junction and the indicator unit via the compensating conductor. Thermocouple terminals are required for constructing a temperature measuring circuit. Technical data Thermocouples to IEC 584 (DIN 43 710) Current bar Cromel Alumel E-grade copper Constantan Iron Constantan E-grade copper/ A-grade copper S-grade copper/ E-grade copper CromelConstantan Identification systems (see assortment in catalogue 7) Marking tags DEK 5/5 Note D.114 1282250000 – 2012/2013