Nagman has recently produced developedprovides multihole dry block high tempera- ture calibrators, model 1200 hh and 1200 hn. These temperature calibrators are not bulky and voluminous like other muffle furnaces, and can be moved anywhere on the site for calibration, sinceas they are havinghave 4 casters fitted at the bottom. This feature of the temperature calibrators make them useful for calibra- tion of multiple dia sensors of longer lengths up to 150 mm and 250 mm. Also, , because of their equalizing dry block technique at a time 5 sensors can be checked precisely, because of their equalizing dry block technique. Precise fine control is achieved due to autotune pid controllers manufactured by calcontrols ltd of u.K.
