[pHaestus]

I think the YSI 423 was the one I was looking at:

"Small, semi-flexible nylon tube with epoxy tip for frozen food packages, rectal temperatures, small animals, and more. Has 304.8cm (10') vinyl-covered shielded wire with phone plug. Tube length: 6.4cm (21/2"). Tip diameter: 0.3cm (1/8"). Time constant: 1.4 seconds. Range: –40 to 100°C."

If it takes the 500 series then look seriously at the YSI 551:

"Hypodermic probe for subcutaneous, intramuscular, intravenous, and small area measurement. Probe is 20-gauge stainless steel, epoxy-sealed. Not electrically isolated. Has 304.8cm (10') non-detachable cable with 0.6cm (1/4") phone plug. Range: 0 to 70°C . Not autoclavable."

Temperature range and need for electrical isolation might be a concern though...

I have a bunch of the 702s

The Cole-Parmer should have analog out, right? Could always go that route to automation...