AOIP-High accuracy multi-purpose digital thermometer (Model:TTI 7)

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 The TTI 7 is a very high accuracy multi-purpose digital thermometer for both platinum resistance thermometers and thermocouples with 2 channels expandable to 10 input channels

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 for money. 

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 thirteen thermocouple types, B, C, D, E, J, K, L, N, R, S, T, U, Au/Pt along with 25 and 100 Ohm platinum resistance thermometers.

Data logging and statistical analysis

The TTI 7 includes an inbuilt 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. The TTI 7 now also includes a real time rolling display.

Usability

Ease of use, password protected digital calibration and a large clear backlit LCD graphics panel ensure the TTI 7 is pleasant to use. Resistance thermometer connections are via LEMO connectors. Both sub miniature thermocouple and standard thermocouple plugs are accepted directly into the thermocouple inputs with no need for further adapters. 

Why choosing TTI 7?

The TTI 7 has the features needed 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. Add the internal scanner to expand the instrument to have up to 10 channels – any or all can be scanned and lodged with the internal data logger.

Specifications and performances in temperature @20°C ±5°C

Uncertainty is given in % of reading (display) + fixed value.

Resistive probes: Measurement

Sensor Measurement range Resistance range Current Resolution (°C / °F / K) Uncertainty / 1 year
Pt25 -200 to -100°C
-100 to +500°C
+500 to +670°C
2.5 to 15 Ω 
15 to 75 Ω 
75 to 115 Ω
1 mA
1 mA
1 mA
0.001
0.001
0.001
0.02°C
0.01°C
0.02°C
Pt100 -200 to -100°C
-100 to +500°C
+500 to +670°C
10 to 60 Ω 
60 to 280 Ω 
280 to 460 Ω
0.5 mA
0.5 mA
0.5 mA
0.001
0.001
0.001
0.02°C
0.01°C
0.02°C

Thermocouples: Measurement

Type Measurement range Resolution (°C / °F / K) Uncertainty / 1 year
B +250 to +1820°C 0.01 0.025% RDG + 0.006% FS*
C 0 to +2315°C 0.01 0.075% RDG + 0.005% FS
D 0 to +2315°C 0.01 0.075% RDG + 0.005% FS
E -200 to +1000°C 0.01 0.026% RDG + 0.004% FS
J -210 to +1200°C 0.01 0.03% RDG + 0.005% FS
K -200 to +1372°C 0.01 0.035% RDG + 0.006% FS
N -200 to +1300°C 0.01 0.035% RDG + 0.005% FS
R -50 to +1768°C 0.01 0.02% RDG + 0.015% FS
S -50 to +1768°C 0.01 0.02% RDG + 0.015% FS
T -200 to +400°C 0.01 0.025% RDG + 0.015% FS
U -200 to +600°C 0.01 0.025% RDG + 0.015% FS
L -200 to +500°C 0.01 0.03% RDG + 0.005% FS
Au/Pt 0 to +1000°C 0.01 0.02% RDG + 0.015% FS

Resource & Download

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