# Мост для первичной эталонной резистивной термометрии — CTR9000

> Первичный мост для резистивной термометрии сопротивления для сверхточных измерений температуры и поверки первичных термометров.

- Код каталога: ctr9000
- Модель: CTR9000
- Категория: Калибровочное оборудование › Resistance thermometry bridges
- Страница товара: https://avigan.com.ua/wika/ru/products/ctr9000
- Цена: по запросу
- Поставщик: AVIGAN (ООО «ВИКА Прилад»), официальный партнёр WIKA в Украине

## Описание

В метрологии самое важное — качество фундаментального измерения. Мостовая технология от ASL представляет собой вершину ...

## Применение

- High-performance AC resistance thermometry bridge for very accurate temperature measurements
- Primary thermometer calibration for national and accredited laboratories, commercial temperature measurement and calibration applications

## Особенности

- Accuracy: < ±20 ppb [±5 μK], optional < ±0.1 ppm [±25 μK] (25 Ω SPRT referred to a 25 Ω reference resistor)
- Resolution: 1 ppb [0.25 μK], optional 0.1 ppm [25 μK] (25 Ω SPRT referred to a 25 Ω reference resistor)
- Fast measurement time (2 seconds balance)
- Differential and absolute measurement
- Warm-up time < 30 seconds

## Технические характеристики

| Параметр | Значение |
|---|---|
| model | CTR9000 |
| product family | CTR |
| short description | Primary-standard resistance thermometry bridge for very accurate temperature measurements and primary thermometer calibration. |
| subcategory | Resistance thermometry bridge |
| certifications | CE |
| ambient temp | 15 … 25 °C |
| weight kg | 46 |
| languages in datasheet | en |
| calibration type | temperature_bath |
| temperature ranges | -189 … 660 °C |
| accuracy or uncertainty | < ±20 ppb (±5 μK) or optional < ±0.1 ppm (±25 μK) |
| output signal | DC +10 V; DC -10 ... +10 V; DC +10 V max; DC -10 ... +10 V max |
| portable | false |

## Таблицы из даташита

| 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,5mA |
| 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 ...260Ω |
| Rated accuracy range | 0 ...130Ω |
| Rs range | 1 ...200Ω |
| 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 220V AC 120 V, AC 100V User selectable on rear panel |
| Supply frequency | 50 or 60 Hz |
| Power consumption | max.250VA |
| Permissible ambient conditions |  |
| Operating temperature | 15 ... 25 °C |
| Communication |  |
| Interface CTR9000 | IEEE-488.2 |
| Interface via driver module CTS9000 (optional) | RS-232 or IEEE-488.2 |
| Case |  |
| Dimensions | Approx. 545 x 382 x 500mm(WxHxD) |
| Weight | 46 kg |

| Model | Dimensions | Temperature range | Detector length |
|---|---|---|---|
| CTP5000-T25 | Pt25, d = 6.5 ... 7.5 mm, l = 480mm | -189 ...+660 °C | 45mm |

| Parameter | Parameter selection |
|---|---|
| SOURCE IMPEDANCE |  |
| 1, 10, 100 | Select to match the bridge pre-amp input impedance to the source impedance for optimum noise performance.The source impedance depends on the standard resistor, SPRT resistance and lead resistance. Default setting is 100 . |
| FREQUENCY |  |
| Low, High | Set as required.Make measurements at both frequencies if AC effects are to be evaluated.The normal setting is High . |
| GAIN (switched) |  |
| x1, x10, x10² x10³, x10 4 | Set gain to achieve required resolution in manual or automatic modes. 10 4 gives resolution of 0.1 ppm 10³ gives resolution of 1 ppm etc. The normal setting is 10 4 (accuracy 0.1 ppm) and 10 5 (accuracy 20 ppb). |
| Sensitivity | For normal manual or automatic modes set to x5.0 (0.1 ppm), x3.2 (20 ppb). Make fine adjustments to optimise balancing in Auto mode. |
| REFERENCE AMP / QUAD GAIN |  |
| x1, x10², x10 4 | Set to a minimum which does not result in saturation of the quad servo. Check that the reference amplifier is not saturated. Normal setting x10 . |
| CARRIER |  |
| Current | Select maximum carrier current that does not exceed the ratio transformer saturation limits or cause excessive self-heating of the PRT. Refer to the PRT manufacturer&#x27;s instructions.Check self-heating with x√2 facility. Default setting is 1 mA . |
| CHECK |  |
| Zero, Unity | The bridge operation can be verified by performing a zero and unity check. Suitable resistors should be connected to Rt and Rs with appropriate bridge settings. Default setting is normal operation. |
| METER |  |
| In-Phase, Quad, Residual | Use front panel meter to measure the amount of in-phase, quadrature and residual signals coming through the detector. Default setting is In-Phase . (Both LEDs off.) |
| BANDWIDTH (Hz) |  |
| 0.5, 0.1, 0.02 (option 0.1 ppm) 0.5, 0.1, 0.2 x0.1/x0.01 (option 20 ppb) | Set to the maximum bandwidth to achieve the required resolution in automatic balance mode.This does not affect manual operation. |

## Документация

- [ds_ct6080_en_co_598e64](https://avigan.com.ua/wika/docs/wika/ds_ct6080_en_co.pdf) — PDF, 505 KB, en