Reference thermometer TTI 22

resistanceprobewith LCD display

Quite simply the TTI 22 high accuracy thermometer sets new standards in the price to performance ratio for industrial and secondary resistance thermometry. The TTI 22 has an accuracy of 0.001°C and a resolution of 0.0001°C (0.00004 Ohms). It has two input channels, is lightweight (1.8 kg) and will operate for more than 10 hours from two small AA cells. It has both RS 232 and Ethernet ports. It is easy to use, and supports both industrial 100 Ohm probes and SPRTs to ITS-90, 25.5 and 100 Ohms. Up to 30 probe calibrations can be stored along with the calibration expiry date so the instrument can warn when the calibration time has been exceeded. Built in statistics calculation can show you both the measured and average values along with the standard deviation over previous measurements. The TTI 22 is ideal as a reference standard alongside liquid calibration baths, for the smallest uncertainty calibration with dry blocks or for demanding stand-alone measurement applications. Previously this level of performance was confined to specialist laboratories with expensive thermometry bridges; TTI 22 delivers 5 to 10 times the performance of comparably priced instruments. High accuracy The TTI 22 continually compares the connected sensor to a highly stable precision internal reference resistor. For a Pt100 at 0°C, the annual stability for absolute measurement is typically ±1.3 mK (5 ppm x 100 Ω = 0.5 mΩ / 1.3 mK).