ISOTECH 18205 BOILING POINT APPARATUS - NITROGEN
ISOTECH 18205 BOILING POINT APPARATUS - NITROGEN
-185°C to -196°C
Isotech Nitrogen Boiling Point Apparatus is designed specifically to realise and maintain the liquid/vapour equilibrium (boiling point) of nitrogen or argon, for the calibration of thermometers on the International Temperature Scale of 1990.
- Boiling Point of Liquid Nitrogen
- Gas Manifold for Thermometers
- Self Contained - Bench Mounted
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아이소텍 ・ ISOTECH
18205
BOILING POINT APPARATUS - NITROGEN
Isotech Nitrogen Boiling Point Apparatus is designed specifically to realise and maintain the liquid/vapour equilibrium (boiling point) of nitrogen or argon, for the calibration of thermometers on the International Temperature Scale of 1990.
The Boiling Point Apparatus is self-contained and refrigerated by liquid nitrogen or liquid argon, which must be supplied by the user. Either liquid is suitable for the purpose. Liquid nitrogen is generally less costly and more readily available than liquid argon. The Apparatus does not require electrical power for its operation.
The Boiling Point Apparatus will maintain the liquid-vapour equilibrium of nitrogen (-195.798°C) or of argon (-185.8468°C) indefinitely, provided boiled-off gas is replenished.
ITS-90 specifies the triple point of argon (-189.3442°C) as the low end of the long-stem Standard Platinum Resistance Thermometer range. As a practical matter, realisation of this triple point is a costly (in equipment and time) and complicated process.
Most laboratories will choose to calibrate this end of the platinum range by comparison of the thermometer under test with a thermometer of known calibration. National Laboratories themselves will invariably calibrate thermometers submitted to them by comparison, realising the actual argon triple point only infrequently for calibration of their own reference thermometers. The National Physical Laboratory of England makes this statement:
“Most thermometers (submitted for calibration) will involve measurements (by) … comparison with NPL standards in a bath of liquid nitrogen (about -196°C)”
Model 18205 Comparator is designed for precisely such comparison calibration. It comprises a stainless steel dewar, an inner equalising block having wells for 3 thermometers, top connections for filling and monitoring the level of liquid coolant, a pressure safety blow-off and a manifold which may be used to thermally tie the thermometers under test to the equalising block with helium gas (optional).
Since the slopes (dR/dT) of Standard Platinum Resistance Thermometers are very similar at any temperature, calibration uncertainties not larger than 0.002K can be obtained at a small fraction of the cost of an absolute calibration.
- SPECIFICATION
| Model | ITL-M-18205 |
| Temperature Range | -185°C or -196°C nominal |
| Uncertainty | ±0.002°C – the temperature distribution across the copper block is less than 2mK. Uncertainty must be added issued with the calibration certificate from the National Laboratory. Extra uncertainties will exist if dissimilar probes are compared. |
| Power | N/A |
| Dimensions | Overall Diameter 142mm, Overall Height 570mm, Weight 14kgs |
| How to order | ITL-M-18205 Nitrogen Boiling Point Apparatus. Note – the Nitrogen Boiling Point Apparatus may be adapted for use with liquid argon. Please contact the factory for details. |

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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.
아이소텍 ・ ISOTECH
18205
BOILING POINT APPARATUS - NITROGEN
Isotech Nitrogen Boiling Point Apparatus is designed specifically to realise and maintain the liquid/vapour equilibrium (boiling point) of nitrogen or argon, for the calibration of thermometers on the International Temperature Scale of 1990.
The Boiling Point Apparatus is self-contained and refrigerated by liquid nitrogen or liquid argon, which must be supplied by the user. Either liquid is suitable for the purpose. Liquid nitrogen is generally less costly and more readily available than liquid argon. The Apparatus does not require electrical power for its operation.
The Boiling Point Apparatus will maintain the liquid-vapour equilibrium of nitrogen (-195.798°C) or of argon (-185.8468°C) indefinitely, provided boiled-off gas is replenished.
ITS-90 specifies the triple point of argon (-189.3442°C) as the low end of the long-stem Standard Platinum Resistance Thermometer range. As a practical matter, realisation of this triple point is a costly (in equipment and time) and complicated process.
Most laboratories will choose to calibrate this end of the platinum range by comparison of the thermometer under test with a thermometer of known calibration. National Laboratories themselves will invariably calibrate thermometers submitted to them by comparison, realising the actual argon triple point only infrequently for calibration of their own reference thermometers. The National Physical Laboratory of England makes this statement:
“Most thermometers (submitted for calibration) will involve measurements (by) … comparison with NPL standards in a bath of liquid nitrogen (about -196°C)”
Model 18205 Comparator is designed for precisely such comparison calibration. It comprises a stainless steel dewar, an inner equalising block having wells for 3 thermometers, top connections for filling and monitoring the level of liquid coolant, a pressure safety blow-off and a manifold which may be used to thermally tie the thermometers under test to the equalising block with helium gas (optional).
Since the slopes (dR/dT) of Standard Platinum Resistance Thermometers are very similar at any temperature, calibration uncertainties not larger than 0.002K can be obtained at a small fraction of the cost of an absolute calibration.
- SPECIFICATION
| Model | ITL-M-18205 |
| Temperature Range | -185°C or -196°C nominal |
| Uncertainty | ±0.002°C – the temperature distribution across the copper block is less than 2mK. Uncertainty must be added issued with the calibration certificate from the National Laboratory. Extra uncertainties will exist if dissimilar probes are compared. |
| Power | N/A |
| Dimensions | Overall Diameter 142mm, Overall Height 570mm, Weight 14kgs |
| How to order | ITL-M-18205 Nitrogen Boiling Point Apparatus. Note – the Nitrogen Boiling Point Apparatus may be adapted for use with liquid argon. Please contact the factory for details. |

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.
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