Bimetal thermometers

Instrumentation · Temperature

Nuova Fima TB8 bimetal thermometers, built entirely in stainless steel in nominal sizes of 100, 125 and 150 mm, are designed for the chemical and petrochemical industries and conventional power plants, where they must withstand the most severe ambient and process conditions. The measuring element is a bimetal spiral, and TIG welding between case and bulb strengthens the assembly and prevents leakage when the instrument is filled with damping fluid to protect it from vibration. They comply with EN 13190 with accuracy class 1, with indication ranges from -50 to +600 °C and measuring ranges from -40 to +500 °C (up to +450 °C in continuous service). The bulb is AISI 316, with diameters from 6 to 9.6 mm and immersion lengths from 100 to 900 mm, and the connection can be lower, back or every-angle, in G 1/2 A, 1/2-14 NPT or 3/4-14 NPT, fixed or sliding with swivel nut. Maximum pressure without thermowell is 15 bar and protection is IP55, or IP65/67 with glycerine or silicone oil filling. ATEX II 2G and II 2GD versions, a vented case for down to -53 °C and external zero adjustment are available. At Tecnovent we recommend combining them with a thermowell suited to your process pressure and velocity.