ISOTECH RBC100A/M & RBC400A/M RESISTANCE BRIDGE CALIBRATOR
가격문의(상세정보 참조)
ISOTECH RBC100A/M & RBC400A/M RESISTANCE BRIDGE CALIBRATOR
RESISTANCE BRIDGE CALIBRATOR
Temperature Coefficient: < ±0.3 ppm/ °C.
The problem: Temperature measurement is one of the most demanding applications of resistance measurement. Calibrate thermometry bridges quickly, simply and in-house
- Calibrate ac and dc thermometry bridges
- High accuracy - better than 0.01 ppm at 100 Ohms (RBC100A)
- Patented design licensed from IRL
- Windows application for full analysis and reporting
클릭 하시면 이동합니다.
아이소텍 ・ ISOTECH
RBC100A/M & RBC400A/M
RESISTANCE BRIDGE CALIBRATOR
- Operating principles
The problem: Temperature measurement is one of the most demanding applications of resistance measurement. It requires the measurement of resistance ratios to accuracies of 0.1ppm or better. While dc resistance standards are sometimes available at this level, ac resistance standards are generally not. So how can we show our bridges are accurate at this level, and that our resistance and temperature measurements are traceable?
- The linearity check
One simple method for checking a resistance bridge is to measure a pair of resistors separately, and then measure the two in series. Ideally the series measurement should equal the sum of the two individual measurements. If not, then the measurements give us a bit of information about the errors in the bridge readings. Note that we do not need to know the values of the resistors to make this test work.
- The complement check
Another check is to measure the ratio of two resistances, say R1/R2, then swap the resistors and measure the reciprocal ratio (or complement), R2/R1. Ideally the product of the two measurements should equal 1.0 exactly, if not, the measurements give us more information on the bridge errors. Once again, we do not need to know the values of the resistors to make this test work.
- The combinatorial method
The RBC exploits the same principles as the linearity and complement check. It uses a network of four stable four terminal resistors that can be connected in 35 different series and parallel combinations. By measuring each RBC combination in the two different ways (as with the complement check) up to 70 different measurements can be made. Since the RBC has just four unknown resistance values, we have up to 66 independent measurements containing information about the errors in the bridge readings. The combinatorial calibration method is particularly powerful because it is not necessary to know the actual values of the four resistors, or their frequency dependence. This means we can calibrate any ac or dc bridge to any accuracy, so long as the various resistance combinations are accurate.
The patented RBC Calibrators are a result of research carried out by Rod White at the Measurement Standards Laboratory of New Zealand, which operates within Industrial Research Ltd (IRL). Isothermal Technology Ltd has an exclusive licence from IRL to develop, sell and produce the RBC.
- SPECIFICATION
| Accuracy | <0.1ppm at 100Ω (For DC and AC to 400 Hz) | <0.01ppm at 100Ω (For DC and AC to 400 Hz. When RBC is temperature controlled). |
| Temperature coefficient | < ±0.3 ppm/ °C | < ±0.3 ppm/ °C |
| Maximum Sensing Current | RBC100M – 10mA, RBC400M – 5mA. | RBC100A – 5mA, RBC400A – 3mA |
| Resistance Range | RBC100M: 16Ω to 127Ω, RBC400M: 43Ω to 346Ω | RBC100A – 5mA, RBC400A – 3mA |
| Power Supply | None – the RBC is completely passive | 5V, via the USB cable. Idle current typically less than 5mA, switching currents less than 200mA. |
| Connections | Four-terminal coaxing using separate BNC for the current and voltage leads | Signal: five-terminal guarded dc spade lugs |
| Case Dimensions | Width: 215mm, Height: 105mm, Depth 200mm. (2U height by half rack width) | Diameter 88mm, Height 140mm, Identical to Tinsley type standard resistors. |
| Digital Control | – | USB |
| Weight | 2.5kg | 1.25kg |
| Software | Tabular and graphical representation of data Least-squares fit to determine model of bridge error Tabular summary of data and results. Print calibration report. | Tabular and graphical representation of data Least-squares fit to determine model of bridge error Tabular summary of data and results. Print calibration report. |
| Minimal Hardware Requirements | 486/66 PC. 8Mb RAM (16 Mb for NT), SVGA (800 X 600) monitor, Compatible with Microsoft Windows Platforms | 486/66 PC. 8Mb RAM (16 Mb for NT), SVGA (800 X 600) monitor, Compatible with Microsoft Windows Platforms |
가격이 궁금하신가요?
더 많은 자료는?
지니어스인더스트리가 취급하는 대부분의 제품은 사업자 간 거래(B2B) 목적의 산업·연구용 전문 계측 장비입니다.
모든 제품은 주문 제작 또는 해외/본사 주문을 통해 공급되고 있으며 실제 현장/시험 환경에서 사용되는 특성상, 장비 개봉, 전원 인가, 설치/시운전, 교정(캘리브레이션) 진행 등으로 제품의 신뢰도와 가치가 달라지기 때문에 일반 소비재와 달리 단순 변심 사유의 반품·환불이 어렵습니다.
다만 초기 제품 하자(동일 모델 대비 명백한 불량, 운송 중 파손, 사양 상이 등)가 확인되는 경우에는 수령 후 [7일 이내] 연락 주시면 점검 후 조치 또는 A/S 절차를 안내해 드리고 있습니다.
단순 변심, 사양 선택 착오, 내부 사정(예: 예산/프로젝트 변경 등)과 같은 구매자 사유로 반품을 요청하시는 경우에는 반품이 제한되며, 예외적으로 협의가 진행될 경우에도 왕복 운송비, 검수 비용, 감가 비용 및 재입고 수수료 등이 청구될 수 있습니다.
구체적인 거래 조건(납기, A/S 범위, 교환 가능 여부 등)은 발행된 견적서, 발주서 확인 메일, 납품서 등에 명시된 내용을 우선합니다.
도움이 필요한 경우 견적서에 명시된 지니어스 영업부 담당자에게 문의해 주시기 바랍니다.
클릭 하시면 이동합니다.
아이소텍 ・ ISOTECH
RBC100A/M & RBC400A/M
RESISTANCE BRIDGE CALIBRATOR
- Operating principles
The problem: Temperature measurement is one of the most demanding applications of resistance measurement. It requires the measurement of resistance ratios to accuracies of 0.1ppm or better. While dc resistance standards are sometimes available at this level, ac resistance standards are generally not. So how can we show our bridges are accurate at this level, and that our resistance and temperature measurements are traceable?
- The linearity check
One simple method for checking a resistance bridge is to measure a pair of resistors separately, and then measure the two in series. Ideally the series measurement should equal the sum of the two individual measurements. If not, then the measurements give us a bit of information about the errors in the bridge readings. Note that we do not need to know the values of the resistors to make this test work.
- The complement check
Another check is to measure the ratio of two resistances, say R1/R2, then swap the resistors and measure the reciprocal ratio (or complement), R2/R1. Ideally the product of the two measurements should equal 1.0 exactly, if not, the measurements give us more information on the bridge errors. Once again, we do not need to know the values of the resistors to make this test work.
- The combinatorial method
The RBC exploits the same principles as the linearity and complement check. It uses a network of four stable four terminal resistors that can be connected in 35 different series and parallel combinations. By measuring each RBC combination in the two different ways (as with the complement check) up to 70 different measurements can be made. Since the RBC has just four unknown resistance values, we have up to 66 independent measurements containing information about the errors in the bridge readings. The combinatorial calibration method is particularly powerful because it is not necessary to know the actual values of the four resistors, or their frequency dependence. This means we can calibrate any ac or dc bridge to any accuracy, so long as the various resistance combinations are accurate.
The patented RBC Calibrators are a result of research carried out by Rod White at the Measurement Standards Laboratory of New Zealand, which operates within Industrial Research Ltd (IRL). Isothermal Technology Ltd has an exclusive licence from IRL to develop, sell and produce the RBC.
- SPECIFICATION
| Accuracy | <0.1ppm at 100Ω (For DC and AC to 400 Hz) | <0.01ppm at 100Ω (For DC and AC to 400 Hz. When RBC is temperature controlled). |
| Temperature coefficient | < ±0.3 ppm/ °C | < ±0.3 ppm/ °C |
| Maximum Sensing Current | RBC100M – 10mA, RBC400M – 5mA. | RBC100A – 5mA, RBC400A – 3mA |
| Resistance Range | RBC100M: 16Ω to 127Ω, RBC400M: 43Ω to 346Ω | RBC100A – 5mA, RBC400A – 3mA |
| Power Supply | None – the RBC is completely passive | 5V, via the USB cable. Idle current typically less than 5mA, switching currents less than 200mA. |
| Connections | Four-terminal coaxing using separate BNC for the current and voltage leads | Signal: five-terminal guarded dc spade lugs |
| Case Dimensions | Width: 215mm, Height: 105mm, Depth 200mm. (2U height by half rack width) | Diameter 88mm, Height 140mm, Identical to Tinsley type standard resistors. |
| Digital Control | – | USB |
| Weight | 2.5kg | 1.25kg |
| Software | Tabular and graphical representation of data Least-squares fit to determine model of bridge error Tabular summary of data and results. Print calibration report. | Tabular and graphical representation of data Least-squares fit to determine model of bridge error Tabular summary of data and results. Print calibration report. |
| Minimal Hardware Requirements | 486/66 PC. 8Mb RAM (16 Mb for NT), SVGA (800 X 600) monitor, Compatible with Microsoft Windows Platforms | 486/66 PC. 8Mb RAM (16 Mb for NT), SVGA (800 X 600) monitor, Compatible with Microsoft Windows Platforms |
가격이 궁금하신가요?
더 많은 자료는?
지니어스인더스트리가 취급하는 대부분의 제품은 사업자 간 거래(B2B) 목적의 산업·연구용 전문 계측 장비입니다.
모든 제품은 주문 제작 또는 해외/본사 주문을 통해 공급되고 있으며 실제 현장/시험 환경에서 사용되는 특성상, 장비 개봉, 전원 인가, 설치/시운전, 교정(캘리브레이션) 진행 등으로 제품의 신뢰도와 가치가 달라지기 때문에 일반 소비재와 달리 단순 변심 사유의 반품·환불이 어렵습니다.
다만 초기 제품 하자(동일 모델 대비 명백한 불량, 운송 중 파손, 사양 상이 등)가 확인되는 경우에는 수령 후 [7일 이내] 연락 주시면 점검 후 조치 또는 A/S 절차를 안내해 드리고 있습니다.
단순 변심, 사양 선택 착오, 내부 사정(예: 예산/프로젝트 변경 등)과 같은 구매자 사유로 반품을 요청하시는 경우에는 반품이 제한되며, 예외적으로 협의가 진행될 경우에도 왕복 운송비, 검수 비용, 감가 비용 및 재입고 수수료 등이 청구될 수 있습니다.
구체적인 거래 조건(납기, A/S 범위, 교환 가능 여부 등)은 발행된 견적서, 발주서 확인 메일, 납품서 등에 명시된 내용을 우선합니다.
도움이 필요한 경우 견적서에 명시된 지니어스 영업부 담당자에게 문의해 주시기 바랍니다.
