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Murphy vapor pressure actuated temperature Swichgage and MurphyGage instruments indicate the temperature as measured at the sensing bulb. If the sensing bulb is not fully immersed in the medium being measured, an inaccurate reading will occur. This is particularly important when applying bulb types C, F and H since the attaching nut can be positioned at various depths along the length of the sensing bulb.

For best results, be sure that the sensing bulb is fully immersed. For further important details see appropriate installation sheet for Murphy temperature devices or contact a representative.