Thermometry
Resistance Bridge Specification
|
| Range |
Resistance:
10 Ohms internal standard 0-15.99999 Ohms.
100 Ohms internal standard 0-350.0000 Ohms
Thermometers: Ro 2.5-100 Ohms
|
Ratio
R(tp)
10 Ohms external standard 0-1.599999
100 Ohms external standard 0-3.50000 |
| Accuracy |
Ratio R(tp):
<±5ppm. Resistance: <±5ppm. and Temp:
<±5 millidegree.
(over -200°C
to +650°C
Sensor: Class 1 NPL Calibration ± 0.001°C
at O°C. to 100°C.
± 0 005°C max @ 630°C. |
| Resolution |
Resistance: On
100 Ohms range =10-4Ohm. On 10 Ohms range =10-5Ohm
Temperature: 0.01°C |
| Stability |
Negligible drift with
time and temperature |
| Internal Reference
Rs |
100 Ohms ± 0.01%
trimmed T.C. =± 0.02ppm/°C
10 Ohms ± 0.02% trimmed T.C. = ±
0.02ppm/°C |
| Measurement
Frequency |
75Hz at 50Hz supply and
90Hz at 60Hz supply. Automatic Switching 50/60Hz. |
| Sensor Current |
0.1, 0.3, 1.0, 3.0 mA
± 1%. Constant current source. |
| Self Heating check |
1.414 X selected
currents |
| Sensor cables |
20 Ohms max series R;
5nFmax shunt capacity, typically 100metres coaxial cable. |
| Display Units |
Ratio, Ohms,
°C,
and K |
| Analogue O/P |
1V 1Hz Bandwidth |
| Digital O/P |
RS232 - Standard.
IEEE-488 optional. |
| Operating
temperature range |
+10 °C
to +30 °C |
| Supply |
210-250V/105-125V.
50/60Hz. 15OVA |
| Dimensions |
400 x 155 x 350mm |
| Net Weight |
10Kg. |
