Standard version made from brass for temperatures up to 300 °C, from steel for higher max. temperature. On request, highstrength brass or CuNiFe alloy suitable for sea water. Stainless steel for aggressive media. The diameter of the type “B” immersion tube is 10 mm; the wall thickness 1 mm. The diameter of the type “Dc“ immersion tube is 6,5 mm, the wall thickness 0,25 mm, stainless steel.