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Watlow's platinum resistance elements are specially designed to ensure precise and repeatable temperature measurement. Watlow RTDs and thermistors are accurate, sensitive, interchangeable, standardized and repeatable.

Product Description Temperature Accuracy
°F °C
RTDs Accurate, repeatable and interchangeable over a wide operating range. -328 to 1200 -200 to 650 DIN Class A ± 0.06% at 32°F (0°C) DIN Class B ± 0.12% at 32°F (0°C)
Thermistors Highly sensitive to small changes in temperature, fairly accurate over a limited temperature range. -75 to 500 -60 to 260 ± 1% at 77°F (25°C) to ±15% at 32°F (0°C)
ENVIROSEAL™ HD Sensor Suited for heavy-duty applications including those in harsh environments. -40 to 392 -40 to 200 Same as RTD and thermistor accuracies above
Surface Temperature Sensors Can be mounted on flat surfaces and is ideal for surface temperature monitoring applications. -58 to 500 -50 to 260 n/a