Specifications - YSI 44000 & 44100 Series Epoxy-Encapsulated Thermistors Description / How to Order Time Constant 1 second maximum for standard thermistors, 2.5 seconds maximum for Teflon-sheathed thermistors, when suspended by their leads in a well-stirred oil bath. In still air, 10 seconds maximum for standard thermistors, 25 seconds maximum for Teflon-sheathed thermistors. Dissipation Constant 8 mW/°C minimum when suspended by their leads in a well-stirred oil bath, or 1 mW/°C in still air. Resistance/Temperature Data Download the YSI Resistance versus Temperature table Interchangeability Tolerance Tables showing nominal resistance values, ohms per degree, and tolerance at select temperatures over the operating range are available upon request. Maximum Power 30 mW at 25°C to 1mW at 125°C short-term. Stability YSI thermistors are chemically stable and not significantly affected by aging or exposure to strong nuclear radiation. The table below shows typical stability for a representative thermistor, the YSI 44005. Operating Temperature Typical Thermometric Drift 10 Months 100 months 0°C 25°C 100°C 150°C <0.01°C <0.01°C 0.20°C 1.5°C <0.01°C <0.02°C 0.32°C not recommended +0.2°C (1% of resistance) Thermistors YSI Part Number Zero Power Resistance @ 25°C (ohms) 44001A 100 44002A 300 44003A 1000 44004 2252 44005 3000 44007 5000 44017 6000 44016 10k (B mix) 44006 10k (H mix) 44008 30k 44011 100k 44014 300k 44015 1 Meg +0.1°C (0.5% of resistance) Thermistors YSI Part Number Zero Power Resistance @ 25°C (ohms) 44035 1000 44033 2252 44030 3000 44034 5000 44037 6000 44036 10k (B mix) 44031 10k (H mix) 44032 30k

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