Hart Scientific 5606 and 5607 full immersion PRTs

The Hart Scientific 5606 and 5607 full immersion PRTs are designed to perform in full immersion applications where both the transition junction and the lead wires must withstand temperatures covering the entire operating range of the probe. Such applications can include calibration or validation of sensors used in laboratory or bio freezers, walk-in refrigerators, autoclaves, ovens, stability test chambers, furnaces or incubators.

The Hart Scientific 5606 has a temperature range of -200 to 160°C, while the 5607 has a range of 0 to 450°C.

The 5606 is 50 mm in length with a sheath diameter of 3.1 mm. The lead wires of the 5606 are made of single-conductor enamelled copper wire, which prevents moisture from wicking to the sensing element. The diameter of the lead wire is no greater than 0.2 mm, making it easy to run lead wires through a freezer door to a display or transmitter with, effectively, zero energy loss. The 5606 has been tested in common heat transfer fluids such as silicone oil, mineral oil, ethanol and liquid nitrogen with no degradation of the transition junction seal or lead wire insulation.

The 5607 has been designed specifically for performing calibrations or verifying the accuracy of sensors used in ovens or furnaces with dry media only. The lead wire of the 5607 is shielded with braided stainless steel and connected to the transition junction with a strain relief spring.