Probe, Silicone Bead Thermistor 53

All of Hart’s secondary reference thermistors have small diameters and very small sensing elements, which means they require far less immersion than a PRT to avoid errors caused by stem effect. Self heating is usually negligible, giving them an advantage when taking measurements in air. Their small size also improves response time, allowing measurements to be taken more quickly.

If your application involves frequent handling, you’ll be especially interested to know thermistors are less susceptible to mechanical shock than PRTs. The bottom line may be better accuracy in fieldwork.

Additionally, higher base resistance and larger resistance coefficients make it easier to achieve precision readings with thermistors, so better resolution and accuracy are possible for a lower cost. All of these thermistors have a negative temperature coefficient of resistance (NTC). For additional information about thermistors, please see “Thermistors: the under-appreciated temperature standards” in our current catalog.

• Short-term accuracy to ± 0.01 °C; one-year drift <± 0.01 °C
• Accredited NVLAP calibration optional
• Flexible PTFE and silicone coated fast-response models
• Rugged polished stainless steel sheaths