Overview
NSPI is the world’s largest supplier of nuclear qualified RTDs and thermocouple temperature sensors. Qualifications are to IEEE, RCC-E and NUREG standards. Most of the sensors can withstａnd 20G’s and 300 Megarads T.I.D. They are available various configurations such as thermowell mounted, strap-on, direct immersion, fast time response and atmospheric styles.
Many optional features are available and include a fully qualified quick connect/disconnect connector that allows for reduced installation and maintenance time within the containment area.
NSPI temperature sensors for nuclear power generation applications include:
| Model | Descrtption |
| 601 & 611 | General use RTD for direct immersion |
| 602, 612 & 615 | General use spring loaded RTD for thermowell mounting |
| N9001 | Thermowell mounted wide range RTD |
| N9002 | Surface mount RTD for strap on mounting |
| N9004 | Thermowell mounted fast response RTD |
| N9013 | Surface mount thermocouple for strap on mounting |
| N9017 | Wall mount atmospheric RTD |
| N9018 | Wall mount atmospheric thermocouple |
| N9019 | Direct immersion RTD |
| N9339 | Flexible RTD for use in CANDU plants |
| N9355 | RCC-E “K2″ qualified rapid response RTD |
| N9356 | Rigid RTD for use in CANDU plants |
| Thermocouples | Nuclear qualified thermocouple assemblies |
Temperature transmitters
Overview
NSPI nuclear temperature transmitters are qualified to IEEE-344 and can be used with either RTDs or thermocouples. They are capable of withstanding up to 40 years of background radiation of 10 Kilorads T.I.D.
The N7000 series transmitter is fully field configurable, making it adaptable to virtually any application. Top entry test jacks provide easy access for direct current measurement without disturbing the loop wiring. Each transmitter has a gasketed, aluminum case, which is moisture resistant and provides a high degree of RFI protection. For especially harsh environments, an explosion proof/corrosion resistant, NEMA 4X certified housing is also available.
Our temperature transmitters for nuclear power generation applications include:
| Model | Descrtption |
| N4000R-99 | RTD temperature transmitter |
| N7000 | RTD and thermocouple temperature transmitter |
Pressure transmitters
Overview
NSPI supplies one of the broadest ranges of pressure transmitters for nuclear qualified applications. Most of the instruments are qualified to IEEE-323/344 and versions are offered for virtually every installation – from inside containment/harsh environment to applications requiring only seismic qualification or commercial grade.
Models are available for the measurement of gauge, absolute or differential pressure and output signals include 4-20 mA, 10-50mA, HART, FOUNDATION Fieldbus, Profibus, and FoxCom.
NSPI pressure transmitters for nuclear applications include:
| Model | Descrtption |
| N-E11 & N-E13 | Pressure transmitters for harsh environment inside containment |
| DTN2010 | Pressure transmitters for harsh environment outside containment |
| DTN2010 CANDU | Pressure transmitters for CANDU harsh environment |
| N-I/A | Pressure transmitters for seismic only environment |
| IDP10, IAP20 & IGP20 | Pressure transmitters commercial grade |
NSPI has been supplying nuclear qualified temperature sensors, thermowells and transmitters, pressure transmitters and fiber optic modems for more than three decades. NSPI is recognized as a global leader in the technologies we supply, in part because of our intense focus on quality and reliability.
Today, over 80% of all North American reactors rely exclusively on NSPI temperature sensors for critical reactor coolant monitoring. NSPI’s nuclear qualified pressure transmitters are used for safety related and BOP measurements at over 20% of US nuclear power plants. NSPI products have been qualified for use in all of the leading reactor technologies, including PWR, BWR, CANDU (PHWR), and APWR.
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