Sper Scientific - Model Type K 800070 -Surface Thermometer Probe

The primary difference between Type J and Type K thermocouples is the measuring range, and the sensitivity. Type K is the most common general purpose thermocouple with a sensitivity of approximately 41 µV/°C. A wide variety of probes are available in its −200 °C to +1350 °C / -330 °F to +2460 °F range. Type K wire color standard is yellow (+) and red (-). Type J has a more restricted range than type K (−40 to +750 °C), but higher sensitivity of about 50 µV/°C. Type J wire color standard is white (+) and red (-).