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TN 750 |
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The TN750 thermometer
offers very high precision measurements to an accuracy of +/-0.002°C or better (when used with
ITS-90 Pt100 –Pt25 optionally- sensor) with resolution at an impressive
0.001°C (over the entire range -180 to +650°C). In addition its self-adaptative linearization mechanism allows to account for
probe characteristics automatically during calibration by a National
Laboratory (with a residual non-linearity better than 0.001°C). Other key
performances are:
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Long-term
drift < 0.001°C +9ppm of Rdg (per year) §
Short-term
stability (jitter) < 0.3 digit ( = 0.0003°C) §
Temperature
coefficient < 1 ppm/°C (max.) |
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Technical specifications |
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q Accuracy |
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Accuracy (after calibration at two fixed points) |
0.001°C |
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q Measurement range |
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Temperature measurement range |
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Calibrator range |
0 to 333 W |
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q Connection between probe and
thermometer |
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Probe type |
“strain free” Pt100, ITS-90 alpha 1.385 or 1.3926 Optionally: Pt25 |
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Measurement current |
1 mA DC |
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Connection |
4-wire shielded cable |
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Lead wire effect |
0.00001°C/W (10W per lead) |
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NMRR |
> 120 dB (at 50 Hz and above) |
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CMRR |
> 140 dB (from 0 to 60 Hz) |
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q Resolution |
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Thermometer resolution |
0.001°C |
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Calibrator resolution |
0.0005W (660,500
points) |
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q Probe linearization |
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Linearization characteristics |
Based on ITS-90 Self-adaptative & automatic |
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Residual non-linearity |
< 0.001°C |
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q Stability performances |
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Long-term drift |
< 0.001°C +9ppm of Rdg (per year) |
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Short-term stability (jitter) |
0.3 LSD ( = |
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q Auto-zero |
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Auto-zero residual |
< 0.0002°C/°C (at the |
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q Temperature coefficient |
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Temperature coefficient |
< 1 ppm/°C (max.) |
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q Warm-up |
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Warm-up time |
15 min. for optimum accuracy |
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q Adjustment |
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Adjustment of system Zero & Full-Scale |
By means of 3 front-panel keys |
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q Display |
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Display |
Easy-to read display with 7 digits |
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q Communication |
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Communication |
RS232 serial
mode (ASCII-characters) , isolated command circuit Optionally:
JBUS |
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q Power |
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Power |
110-220VAC, 50-60Hz, 1Watt |
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q Physical characteristics |
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Case |
Extruded aluminium case (EMC) Full electrical continuity |
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Version |
Laboratory version ( |
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Dimensions |
9.1" x 3.3" x 7.5" (inches) (mm: 230 x 85 x 190 ) |
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Weight |
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q Environmental conditions |
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Operating temperature range |
0 to |
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