CTR9000 -- Primary-Standard Resistance Thermometry Bridge
Category: TEMPERATURE, CALIBRATORS
Model: Temperature Standard, Temperature Standards
Avaibility: AVAILABLE
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CTR9000 -- Primary-Standard Resistance Thermometry Bridge
Category: TEMPERATURE, CALIBRATORS
Model: Temperature Standard, Temperature Standards
Avaibility: AVAILABLE
Call For Price
In metrology, the most important consideration is the quality of the fundamental measurement. The bridge technology from ASL represents the peak of performance in resistance thermometer measurement. It exploits the inherent advantages of AC bridge technology to maintain repeatable measurements of highest precision under practical operating conditions.
The model CTR9000 primary-standard resistance thermometry bridge is designed specifically for resistance thermometry to provide the best possible accuracy.
The 25/30 2) Hz or 75/90 2) Hz operating frequency provides fast, continuous measurement with high immunity to thermal EMF errors and supply frequency noise sources. Practical measurements involve cables, connectors and imperfect operating environments. The CTR9000 achieves its full specification under a wide range of real operating conditions.
AC bridge technology will always outperform measurements made using DC technology with slow current reversal. These benefits are inherent to the fundamentals of electrical measurement and not just the implementation.
Specifications |
Model CTR9000 |
Input channels |
2 on the main device (one platinum resistance thermometer (PRT) or standard platinum |
|
resistance thermometer (SPRT) or resistor + one reference resistor) |
|
60; over multiplexer CTS9000 |
Input connections |
4 x BNC + shield (front panel) |
Data entry format |
ITS 90 and CVD for calibrated probes; or EN 60751 for uncalibrated probes |
Accuracy 1) |
0.1 ppm ratio error over full range or 20 ppb ratio error over full range, dependent on configuration |
Measuring ranges |
|
Sense current |
1 mA, 2 mA, 5 mA |
Sense current mulitpliers |
0.1, 10 and ?2 |
Sense current accuracy |
Accuracy option 0.1 ppm: ±1 % |
|
Accuracy option 20 ppb: ±0.1 % |
Carrier frequency |
50 Hz supply frequency: low 25 Hz, high 75 Hz |
|
60 Hz supply frequency: low 30 Hz, high 90 Hz |
|
Phase locked to the local supply frequency |
Bandwidth |
Accuracy option 0.1 ppm: 0.5 Hz, 0.1 Hz, 0.02 Hz |
|
Accuracy option 20 ppb: 0.5 Hz, 0.2 Hz, 0.1 Hz, multiplier x 0.1, x 0.01 |
Measuring range |
0 ... 260 ? |
Rated accuracy range |
0 ... 130 ? |
Rs range |
1 ... 200 ? |
Display |
|
Range |
Accuracy option 0.1 ppm: 1.299 999 9 ratio of two resistors |
|
Accuracy option 20 ppb: 1.299 999 999 ratio of two resistors |
Resolution |
The digital resolution is typically 0.01 ppm with a Pt100 at 1 mA. |
Voltage supply |
|
Power supply |
AC 240 V, AC 220 V |
|
AC 120 V, AC 100 V |
|
User selectable on rear panel |
Supply frequency |
50 or 60 Hz |
Power consumption |
max. 250 VA |
Permissible ambient conditions |
|
Operating temperature |
15 ... 25 °C |
Communication |
|
Interface CTR9000 |
IEEE-488.2 |
Interface via driver module CTS9000 |
RS-232 or IEEE-488.2 |
(optional) |
|
Case |
|
Dimensions |
Approx. 545 x 382 x 500 mm (W x H x D) |
Weight |
46 kg |
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