Download a copy of the Industrial Head Thermocouple reference sheet here: Industrial Thermocouple diagram
Preferred sizes and simplex (single element) thermocouples shown.
L3 is 25mm as standard. L3 sizes also available: 50, 75, 100, 125 & 150mm. Increasing L3 reduces L2.
For longer L1 (up to 500mm), duplex (dual element) or K type thermocouples - ask for quotation.
Standard ceramic tube material is RA (Recrystalised Alumina - 99.7%)