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TN 900 |
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TN900 is an ultra-fine digital
thermometer-regulator. §
The regulation component of this
instrument (with PID function) allows to stabilize
the temperature at the desired set-point within 0.001°C (in liquids). PID
parameters and set-point can be set manually (with keys) or remotely (via
RS232). Set-point resolution of 0.001°C (over the range –100 to 400°C) is as
fine as the resolution of the measurement component. §
The measurement component of this
instrument is composed of a highly precise thermometer (TN700) which
stability supports this exceptional regulation performance. |
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Technical specifications |
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q Connection between probe and thermo-regulator |
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Probe type |
Pt100 (alpha
1.385 or 1.3926), ITS90 |
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Measurement
current |
1 mA DC |
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Connection |
4-wire
shielded cable |
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q Regulator set-pojnt |
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Set-point
resolution |
0.001°C |
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Set-point
range |
-100 to
+400°C (-148 to +788°F) |
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Set-point
setting |
Either
manually or remotely (via RS232) |
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q Regulator performance |
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Temperature
stabilization performance |
to 0.001°C |
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q PID characteristics |
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Proportional
band |
0.1 to 100% |
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Derivative
time |
0.1 to 100
seconds |
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Integral
time |
0.1 to 100
seconds (infinite at 0.0) |
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q Regulator output |
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Output |
Isolated
external SSR |
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q Thermometer characteristics |
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Temperature
measurement range |
-180 to +650
°C (-292°F to +1202°F) |
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Resolution |
0.001°C |
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Accuracy
(after calibration at two fixed points) |
0.002°C |
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Residual
non-linearity |
< 0.002°C |
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Long-term
drift |
< 0.005°C
+18 ppm of Rdg (per year) |
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Short-term
stability (jitter) |
0.5 digit (
= 0.0005°C) |
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Temperature
coefficient |
< 1.5 ppm/°C (max.) |
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Auto-zero
residual |
<
0.0002°C/°C (at the 0°C point) |
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Warm-up time |
10 min. for
optimum accuracy |
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Adjustment of
zero & Full-Scale |
By means of
3 front-panel keys ([CAL], [ZERO], [SENS]) |
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q Communication |
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Communication |
RS232 serial
mode (ASCII-characters) , isolated command circuit |
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q Power |
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Power |
110-220VAC, 50-60Hz,
1W |
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q Physical characteristics |
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Case |
Extruded aluminium case (EMC) Full
electrical continuity |
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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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