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TTI-22 High Accuracy Thermometer.

The TTI-22 High Accuracy Thermometer sets new standards in the price to performance ratio for industrial and secondary resistance thermometry.
If you need high accuracy at an affordable price you have to look at the TTI-22.
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 (1.8kg) and will operate for more than 10 hours from two small AA cells. It has both RS232 and Ethernet ports. Simple to use, supporting both Industrial 100 Ohm probe and SPRTs to ITS-90, 25.5 and 100 Ohm.
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. 

TTI22 High Accuracy Thermometer

Model  Description 
TTI22  TTI22 True Temperature Thermometer Standard

Built in statistics calculation can show you both the measured and average values along with the standard deviation over previous measurements.

The Isotech 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.

Thermometer specification
Inputs  2 channel, PT100 (BS EN 60751 / IEC) or 25.5/100Ω SPRT to ITS 90 
Measuring Current  0.4mA 
Self Heating Test current  0.29mA (0.41mA/ √2 
Measuring Time  1.44 Seconds for both channels 
Measuring Range  -250°C to +960°C (0 to 440Ω) 
Resolution  Temperature: 0.0001°C, 1mK
Resistance: 0.00004Ω, 40µΩ 
Uncertainty of measurement  Temperature: 0.001°C, 1mK 100Ω PRT
Resistance: 0.4mΩ at 20°C
Instrument only, uncertainty with sensor dependent on range and
sensor type  
Reference Resistor  Internal 380Ω
TCR ±0.3ppm / °C
Stability ±5ppm / year 
Interface  RS232, Ethernet, built-in web server provides simple temperature display 
Ambient temperatrure range  10°C to 30°C 
Power Supply  7.5VDC, 250 mA power adaptor or (2) AA batteries (typically >10 hours
operating time) 
Dimensions  112mm x 190mm x 240mm (4.4" x 7.5" x 9.5") 
Weight  1.8 kg (4 lbs.)