The sensor consists of between six and 10 graduated lengths of loop wound resistance elements, housed in a flexible 316 S.S. or Monel sheath. Each copper element, regardless of length, has a resistance of 100 Ohms at +77 °F (+25 °C).

Accuracy Type I:
+/- 0.25 °F (+/- 0.14 °C)
Accuracy Type II:
+/- 0.5 °F (+/- 0.28 °C)
Operating temperature ranges Type I: 0 °F to +212 °F (-17 °C to +100 °C)
Type II: 0 °F to +392 °F (-17°C to +200 °C)
RTD change/degree Change/ °C (0 to +100 °C) 0.3879 ohms/ °C (0.2155 ohms/°F)
Elements 6-10 Maximum
Insulation test 1000 Vdc, all resistors to housing
Housing Max pressure: 125 psig
Outer sheath 316 Stainless Steel or Monel
Sheath dimensions ¾ " (19 mm) internal diameter
1" (25 mm) external diameter
Fittings diameter 1-3/8" (35 mm)
Top connection ¾" (19 mm) N.P.T.
Tank floor connection 9/32" (7.1 mm) diameter