These Labom FN2460 Gas Expansion Thermometer Clip-on Bulb  are suitable for use outdoors and in aggressive environments. Gas expansion thermometers with clip-on bulb offer some benefits to the user: no change in pipeline cross-section; the line thus remains piggable and retrofitting can be carried out without interfering with the process simple mounting If the exact orientation of the indication is not known before mounting, we recommend using the position-able version. With this version the case may be re-positioned once by ± 180° with respect to the pipeline. The bimetal thermometer with centre back connection is designed for the installation in a separate thermowell. Suitable thermowells see type series HP1100 and HP1200 (data sheets T5-051 and T5-050). Options Explosion protection (ATEX) for mechanical devices Certificate of measuring equipment for Russian Federation Calibration certificate as per EN 10204 Case with liquid filling Electronical angle-of-rotation sensor, Type series PL1100, see data sheet D6-020