Description The continuous resistance element Model ST-AV91H 1000ohm 275 Platinum Averaging Sensors provide accurate sensing of duct temperatures when a large area must be covered. Temperatures are averaged over the entire length and terminate in a weatherproof housing. The Model ST-AV91H uses an element that closely matches platinum resistance/temperature characteristics over the specified range. The sensors have a copper case that is bendable to a radius of 4" (10.2 cm). They can crisscross a duct or plenum to average out temperature stratification. FEATURES Continuous averaging Flexible copper probe 12', 24', or 50' lengths Weather resistant box 1,000 ohm 375 sensor SPECIFICATIONS Sensing element 1000ohm +-0.25% @ 32 F (0 C) Temp range -40 to 240 F (-40 to 115 C) Approx sensitivity 2.1ohm/ F @ 32 F (0 C) Lead wires 22 AWG Teflon insulated Element Length 24' (7.3m), 12' (3.7m), 50' (15.2m) Casing Copper 0.187" dia (0.475 cm) Housing Weatherproof