518APH-12: Tattletale (25700147) POWERVIEW GAUGES The 20T-250-10-1/2 is a 2"

The 20T-250-10-1/2 is a 2" Temperature Swichgage

The 20DP-15 Differential Pressure Swichgage is a 2" dual-scale dial

Stainless Steel Bourdon Tube/Socket

Power Supply Input Voltage: 12/24V (8-32VDC Minimum and Maximum Voltage)

Contact(s) are grounded through the Swichgage

518APH-12: Tattletale (25700147) POWERVIEW GAUGES The 20T-250-10-1/2 is a 2"518APH 12: Tattletale (25700147) The Murphy 518APH 12 Tattletale allows for Swichgage and or N. C. contacts to be wired "Closed Loop" (in series). Any contact open or Swichgage contact close in the circuit shunt trips the 518APH 12. The 518APH 12 is a 12 volt model which Features a manual indicating reset type. The control circuit output contact is NCH and NOH. In the latched position the NCH contact has a "hot" output; in the tripped position the NOH