The Murphy 20BTG-250-10-1/2 temperature indicator gauge from the United States is a high - performance 2 - inch dial (51 mm) temperature instrument.
It adopts the same heavy - duty design as the standard 20 series and 25 series Swichgage instruments, with a compact structure, making it an ideal choice for gauge applications.
The gauge is equipped with high - impact polycarbonate lenses, a sturdy steel case, a polished stainless steel bezel, a unique unitized diaphragm chamber, etc., ensuring high accuracy and effective protection against over - pressure/over - temperature.
With a temperature range of 130 - 250°F (54 - 121°C), its sealed capillary tubes and sensing bulbs can accurately convert pressure changes at the diaphragm into mechanical motion for display, and it is widely used in multiple industrial fields.