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The TTI-7 is a very high-accuracy multi-purpose digital
thermometer for both platinum resistance thermometers and
thermocouples. Laboratory users will welcome the features to
eliminate Thermal EMF Errors and Self Heating Errors along
with provision to store the calibration data of up to 20 PRT
probes. The rugged aluminum case, internal battery pack and
integrated power supply ensure reliable portable field use for
demanding measurement applications all at great value.
Dual Channel input allows a probe on Channel B to be
calibrated against a standard on Channel A — directly compare
any combination of PRT and Thermocouple. The TTI-7 supports
ten thermocouple Types, B,C, D, E, J, K, N, R, S and T and
Pt100 thermometers. Connect up to 16 sensors via the optional
switchboxes, Model 954 and 958.
Data Logging and Statistical Analysis
The TTI-7 includes an built-in data logger internally
storing up to 4,000 date and time stamped readings. Recall the
data from the front panel or send to a PC or Printer via the
PC interface which is included as standard. The powerful math
function enables statistical analysis of the captured data,
mean, max, min, peak and standard deviation.
Usability
Ease of use, password protected digital calibration and a
large clear backlit LCD graphics panel ensure the TTI-7 is a
delight to use. Resistance thermometer connections are via DIN
connectors. Both sub miniature thermocouple and standard
thermocouple plugs are accepted directly into the thermocouple
inputs with no need for further adapters.
Why the TTI-7?
The TTI-7 has the features you need for high accuracy
temperature measurement. With resistance thermometers used at
high temperatures unwanted thermal EMFs are generated, the
TTI-7 can take two measurements switching the polarity then
computing the average to eliminate this error source. Many
other instruments lack the ability to eliminate thermal EMFs.
The thermal EMF error can be greater than the quoted accuracy
of an instrument, if you need small measurement uncertainty
for high-temperature PRT work you need this feature.
The TTI-7 Uncertainty of Measurement (1 Year) in the range
-100°C to 500°C is 0.01°C. Watch for specifications that quote
the value at -100°C and then get larger as the temperature
rises. The TTI-7 is optimized over the most frequently used
temperature range. For thermocouple measurements the automatic
CJC is far better than 0.1°C at 20°C. Great design care was
taken, both thermocouple inputs are measured with separate
Pt100 sensors. This approach gives outstanding CJC
performance. |
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