Energy

Nuclear qualified temperature measurement

Measurement and control products that are safe, reliable, effective and sustainable

Our heritage in nuclear qualified sensors and related accessories stretches back to 1968. Today we offer a comprehensive range of temperature and pressure sensors to support safe and effective, long term operation of nuclear plants.

Nuclear Qualified Temperature Sensors

IEE 323/344

N9001 Thermowell Mounted Wide Range RTD

The model N9001 series RTD is designed for use as a wide range thermowell mounted sensor in the primary coolant loop of PWR (Pressurized Water Reactor) nuclear generating facilities. The RTD is qualified per IEEE 323-1974/1983 and IEEE 344-1975/1987 for use in Class 1E harsh environments, but can also be used for non-safety applications.

N9002 Surface Mounted RTD
N9004 Thermowell Mounted Fast Time Response RTD Assembly

The model N9004 fast time response RTD is designed to be installed in a compatibly designed thermowell for rapid detection of temperature changes in the Hot and Cold legs of the reactor coolant loops (RCS) of PWRs (pressurized water reactors). The N9004 RTD is currently installed in many operating PWR nuclear plants, with some of the original installations occurring in the early 1980’s. There is little drift of either calibration or time response associated with normal operating conditions. Thus, the RTD assembly has low maintenance costs. Also, due to unique design features, ALARA amounts are reduced during installation and removal, especially when a Quick Disconnect Connector (QDC) is used.

  • Reactor coolant loops (RCS) hot and cold legs
  • Reactor coolant pumps
  • RCS wide range
  • Feedwater systems
  • RHR/SIS systems
N9007 Direct Immersion RTD
N9013 Surface Mount Thermocouple
N9017 Atmospheric RTD
N9018 Atmospheric Thermocouple
N9019 Direct Immersion RTD
N9310 flexible RTD spring loaded for use in thermowell
N9339 Flexible RTD spring loaded for use in thermowell

The model N9339 flexible RTD is specifically designed and qualified for
use in CANDU powerplants for installation into a guide tube interfaced with a thermowell or thermal block. The RTD is qualified per IEEE 323-1974/1983 and IEEE 344-1975/1987 for use in Class 1E harsh environments but can also be used for non-safety applications.

  • Feeder tube temperature monitoring for CANDU reactors
  • Hydrogen recombiner temperature measurement
  • Emergency diesel generator coolant temperature measurement
  • Bearing temperature measurement
  • Inlet and outlet service temperature measurement
N9355 Direct Immersion RTD
N9356 rigid RTD safety

The model N9356 Rigid RTD is specifically designed and qualified for use in CANDU power plants for installation into an adapter fitting interfaced with a thermowell or direct installation on a bracket. The RTD is qualified per IEEE 323-1974/1983 and IEEE 344-1975/1987 for use in Class 1E harsh environments, but can also be used for non-safety applications.

  • Inlet & outlet service temperature measurement
  • Hydrogen recombiner temperature measurement
  • Emergency diesel generator coolant temperature
  • Bearing temperature measurement 
  • Air temperature monitoring (non-thermowell mount)
  • Direct replacement for obsolete Rosemount Model 104ACF
601 RTD Al2O3 with welded fitting for direct immersion safety
602 Spring loaded Al2O3 sheath insulation 602D for dual element 611 RTD MgO with welded fitting for direct immersion safety
612 Spring loaded MgO sheath insulation 612D for dual element 615 Spring loaded half inch NPT hex nipple 615D for dual element

The model 612 spring-loaded RTD is designed for a wide range of nuclear applications. The sensor is intended to be installed in a thermowell or protection tube. The spring-loading action ensures proper contact with the tip of the thermowell or protection tube for optimal heat transfer. This sensor model is optimally configured for use with a terminal block and terminal block connection head. The RTD is qualified per IEEE 323-1974/1983 and IEEE 344-1975/1987 for use in Class 1E harsh environments.

  • Wide range of nuclear applications
  • Installed in thermowell or protection tube
  • Spring-loaded for optimal heat transfer
  • Qualified for use in Class 1E harsh environments

RCC-E/M

KN201 K3 Qualified Explosion Proof ATEX RTD
KN606 K1 qualified semi–Fast Response RTD
KN612 K2 RTD STD Response Time
KN615 K1 Qualified RTD STD Response Time
KN616 1 Qualified RTD Semi Fast Time
KN617 K1 Qualified RTD FTR EDF
KN9004 K1 Qualified RTD fast time
KN9014 K1 Fast Time Response RTD
KN9017 K1 K2 Atmospheric RTD
KN9355 K1 Fast Time Response Direct Immersion RTD

Nuclear Qualified Temperature Transmitters

N7030 RTD and N7040 Thermocouple Analog Transmitter

The N7030 and N7040 analog temperature transmitter series are two-wire 4-20 mA DC current loop powered temperature transmitters. They are analog signal conditioning devices designed to accept standard RTD or thermocouple inputs and convert the input to a linearized 4-20 mA DC output signal that is proportional to the input. The transmitter is nominally powered from a 24 VDC supply but will accept any regulated DC supply such that the voltage measured at the transmitter’s terminals is between 14 and 48 VDC under all conditions.

  • True analog transmitter
  • Qualified per IEEE 323 Class 1E Mild Environment
  • Qualified per IEEE 344 Class 1E Seismic
  • Loop powered 14 to 48 VDC
  • Analog ANSI-ISA, NAMUR 43 
  • EMC, NRC RG 1.180, CE
N4000R-99 RTD Temperature Transmitter

Nuclear Qualified Thermowells

ASME Section III Division 1 Class 1 2 and 3 Appurtenances and Materials
ASTM ASME Code Materials
RCC-M Code Materials

Parts and Accessories

Connections heads

Cast iron
Aluminum non-seismic
Stainless steel
Stainless steel non-seismic

Nuclear temperature spare parts

0102-004-0034T Dow 3145 radiation resistant silicone sealant 3 oz tube shelf life 1 year
0102-004-0012T Dow 3145 radiation resistant silicone sealant 10.3 oz cartridge shelf life 1 year
0102-004-1003T Primer Dow 1204 13.5 oz Can shelf life 6 months
0104-002-0004T Conformal coating 4 oz can resin solution UN 1866 shelf life 1 year
0109-001-0110T PST 580 Loctite thread lubricant 500 cc tube shelf life 1 year
0109-001-0113T P1 thread sealant higher heat shelf life 2 years
0109-001-0115T Thread sealant Westinghouse past Grafoil GTS 4 oz tube
0109-001-0116 Super O-lube for O-rings 2 oz tube
0125-004-0001 Taper tip thermowell cleaning kit
0125-003-0024 N9034 Dummy RTD for kit and training
0125-003-0005 RTD Insertion Installation Tool
0125-003-0041 N9034 RTD Grinder Assembly Kit includes 5 tip grinder assemblies 0.255 0.256 0.257 0.258 0.259
0125-003-0023 N9034 RTD Insertion and Extraction tool
0125-003-0030 N9034 RTD Insertion and Extraction tool kit
0125-003-0004 RTD Removal Tool
0128-006-0004 Deburring tool 15 inches long for taper tip thermowell
0301-008-0001 Pin screw to attach chain to head 10 X half inch
0302-006-1024T Washer Split Lock 316 S.S. 7-8 inch
0303-002-0054T Hex Lock Nut 316 SS half inch NPSL 14
0307-001-0009T Terminal Spay Lug non-safety only
0307-004-0002T Crimp splice barrel for QDC 16-20 AWG
0308-004-0003T Single T-C terminal block ceramic body with brass connections
0308-004-0004T dual T-C terminal block ceramic with brass connections
0308-004-0006T 4 and 6 wire RTD round ceramic terminal block NPBR terminals
0308-004-0008T 8 wire RTD terminal block ceramic without base plate unassembled
0308-004-0009T 8 wire RTD terminal block ceramic complete assembly with base plate
0322-001-0002 Gasket flat ring neoprene
0322-001-0004 Gasket O-ring Buna N
0322-001-0016T Nordel O-ring inner seal for half inch Patel connector
0322-001-0021T Gasket flat ring Viton -0015T head
0322-001-0023T Gasket flat ring Viton GP head -0016T
0322-001-0070T Nordel O-ring for half inch Patel connector
0322-001-0098T Nordel O-ring for three quarter inch Patel connector
0323-004-0006T clamp metal loop quarter inch
0323-003-0021T Constant Torque Clamp SS 1 and five sixteenth - 2 and quarter inch
0323-003-0012T Worm drive clamp kit 25 each clamps 100 ft strap
0334-001-9015T hex nipple 9004
0334-004-0006 SS TW Plug
0334-201-0072T pipe nipple fitting
0334-201-0096T PN 316 SS SCH 160 0.450 INT. BORE
0334-400-0037T pipe union 316SS 150 machined from bar 9004
0342-002-0002 Cast iron GP connection head aluminum paint 0021T gasket
0342-002-0016T GP SS head cast to equivalent of 316 SS grade A-351
GP SS head commercial grade
0342-002-0017T GP SS head 3 hubs RTD only A-351
0348-002-0001 chain SS 8.5 inches long
0400-006-0008T one-eighth Polyolefin Shrink Tubing Black
0400-006-9003T 3-64th inch Polyolefin Shrink Tubing white
0400-010-4024T Flex tubing, 316SS 3x8th inch ID corrugated
0401-060-0007T Nickel Coated Copper Wire 20 AWG 19-32nd 27 percent Ni Bare Stranded Twisted Concentric
0402-001-3005T 4 wire cable tin plated copper wire 20 AWG 19-32nds shielded polyolefin insulation 8 20
0402-001-3005T 4 conductor wire 20 19-32nds TPC shield polyol jacket 2R and 2W
0402-001-3006T 8 wire cable tin plated copper wire 20 AWG 19 by 32nds shielded polyolefin insulation 8 20
0402-001-3007T 8 conductor Rockbestos 8 20 aluminum ploy shield with drain wire
0407-016-0001T half inch QDC 8 pin with 30 ft of 8 wire cable and 10-inch leads
0407-016-0002T half-inch QDC 8 pin with 20 ft of 8 wire cable and 10-inch leads
0407-016-0003T half-inch QDC 8 pin pin half only
0407-016-0004T half-inch QDC 8 pin socket half includes O-ring
0407-016-0024T-SFS half-inch QDC 8 pin-socket bayonet WITH 25FT Pigtail Gen 3 QDC
0407-016-0027T Model N9280-U18 half QDC 8 pin socket side instrument side
0407-099-0021T half-inch QDC 8 pin assembly unassembled as received from EGS
0407-099-0102T 8N45S-21-85-712 K2 Mobile Plug
0407-099-0111T Generation 3 half-inch NPT QDC Socket Side Assembly 2 C-16 AWG 360 degrees Shielded Bayonet 2 Socket EGS 23066-136
0407-099-0150T EGS GEN 3 and half-inch Socket field side only 2 conductors 24 ft Rockbestos Without 360-degree shield
0447-002-0006 Bi metal thermometer BB5109E84
1000-300-0011 Nylon terminal block RTD 6 wire with nylon NP brass connector assembly
1000-301-0007T GP RTD cast iron head assembly
1000-301-0010T GP TC cast iron head assembly single TC
1000-301-0011T GP TC cast iron head assembly dual TC
1000-301-0014T GP TC SS light weight head assembly single TC
1000-301-0015T GP TC SS light weight head assembly dual TC
1000-301-0016T GP RTD SS light weight head assembly single RTD -0023T gasket
1000-302-0068T Ex: Welding 0334-001-9051T half-inch NPT Nipple and 0334-400-0037T Pipe Union fitting together
1000-301-0017T GP RTD SS 3 hub head assembly dual RTD -0023T gasket
1000-301-0034 GP RTD Aluminum head assembly 6 wire RTD half x three quarters
0334-300-0042T Electrical Conductor Seal Assembly ECSA
0334-400-0086T Pipe Union for Curtiss-Wright N9004 half-inch NPT Chrome Plated
0322-001-1008T PEEK Energized Seal with Elgiloy Spring for dynamic coaxial sealing
0900-100-0200 DTN Semi-Permanent Tag assembly 0338-004-1001 blank SS tag half-inch SS cable 0354-001-0001 two splices 0307-004-0005
0334-001-9051T half-inch NPT Nipple
0407-016-0024T Connector 8-Socket bayonet with 25FT pigtail Gen 3 QDC
0407-016-0058T Connector Quick Connect Pigtail 4 Wire

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