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WIKA · Temperature measurement · Family TCN

Thermocouple for civil nuclear applications

Thermocouple for civil nuclear applications with IEEE conformity, suitable for reactor buildings, cooling pools, and accident-proof applications.
Range
-40…1000 °C
Output
-1.6 ... +42 mV · -1.6...+42mV
Accuracy
± (1.5 or 0.004 x |t|) °C for Class 1
Protection
IP65
RoHSUKCA
Price
On request
Depends on configuration
Request a quote
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Description

Thermometers for use in nuclear power plants comprise:

- ■ Thermocouple type K - ■ Thermowell / Protection tube - ■ Accessories

The model TCN thermocouple can be combined with a large number of thermowell / protection tube designs. Operation without thermowell / protection tube is only recommended in certain applications.

Special features

  • Measuring range from -40 ... +1,000 °C [-40 ... +1,832 °F]
  • Mounting in all standard thermowell designs possible
  • Spring-loaded measuring insert
  • Thermocouple type K
Identification
ModelTCN
SubcategoryThermocouple
Measuring range
Temperature ranges−40…+1000 °C
Accuracy
Accuracy class± (1.5 or 0.004 x |t|) °C for Class 1, -40 ... 1000 °C
Process conditions
Process temperature−40…+1200 °C
Electrical characteristics
Output signal-1.6 ... +42 mV
Electrical connectionHarting (HAN7D...), TS connector LOCA, Connector LOCA + SA
Materials
Probe materialStainless steel 1.4571
Operating environment
Ambient temperature−40…+80 °C
IP ratingIP65
Certifications and approvals
Certifications
RoHSUKCA
Additional details
Sensor typeType K
Sensor classClass 1
Probe diameter3 mm
ThermowellYes
Tables from datasheet
Overview of versions
ModelDescription
TCN-IzImmersed, with and without thermowell / protection tube (I = immersed)
TCN-AzRoom air sensor (A = ambient)
TCN-SzSurface probe (S = surface); for versions, see model TC50, data sheet TE 65.50
TCN-PzResistance thermometer for cooling ponds and similar applications (P = pool)
TCN-GzCombined sensor (G = gradient)
Operating conditions
Accident conditions (qualified)
ΔTMax. 195 °C; 5.4 bar (g) saturated steam: 24 h
Radiation resistanceto 850 kGy
Vibration resistance 10 ... 35 HzConstant deflection 0.35 mm
Vibration resistance 15 ... 500 Hz0.3 g (max. reaction acceleration measured at the instrument, peak value up to 41 g)
Throughput speed1 oct./min, 10 cycles
Vibration resistance 0 ... 3 HzConstant deflection
Vibration resistance 3 ... 100 HzMax. 35 g
Boric acid resistance24 h at 60 ... 150 °C, concentration 6,200 ppm
Operational radiation≤ 250 kGy (gamma equivalent)
Humidity100%, r. h. (condensation permissible)
Further details on operating conditions
ConnectorTCN-yHTCN-yATCN-yC
DescriptionHarting (HAN7D...)TS connector LOCAConnector LOCA + SA
IP ingress protectionIP65 (IP67 possible without radiation)IP68IP68
IEEE ratingN1E Harsch1E1E + SA
Qualified lifetime12 years at 45 °C ambient tem- perature55 years at 45 °C ambient tem- perature55 years at 45 °C ambient tem- perature
Maximum radiation during normal operation100 kGy TID - 'Total Integrated Dose'250 kGy TID - 'Total Integrated Dose'250 kGy TID - 'Total Integrated Dose'
Maximum radiation during accident-600 kGy (TID: 850 kGy)600 kGy (TID: 850 kGy)
LOCA test conditions-max. 195 °C, 5.4 bar (g), 24 h1 h at 250 °C; 5 h at 207 °C
Accidental radiation after LOCA--1,000 kGy (TID: 1,850 kGy)
Humidity90 % r. h. (condensation permissible)100 % r. h. (condensation permissible)100 % r. h. (condensation permissible)
Ambient and storage temper- ature-40 … +80 °C [-40 … +176 °F]-40 … +80 °C [-40 … +176 °F]-40 … +80 °C [-40 … +176 °F]
Measuring tip Ø 3 mm [0.12 in]UngroundedGrounded
Thermometer version
SensorType K
Diameter3 mm [0.12 in]
Probe length150 ... 1,100 mm [5.91 ... 43.31 in]
MaterialStainless steel 1.4571
Response time in seconds (±10 %)
t 0.52.560.42
t 0.633.190.55
t 0.95.961.32
View all (7)
LogoDescriptionRegion
EU declaration of conformityEuropean Union
UKCA Restriction of Hazardous Substances (RoHS)United Kingdom
CertificatesMeasurement accuracyMaterial certificate 1)
2.2 test reportxx
3.1 inspection certificatexx
DAkkS calibration certificatex-
ModelDescriptionOrder number
Cable couplingsMounting type depending on cable / customer specificationCustomer-specific