Analysis&Measurement / Kelvinion Chip
Kelvinion Chip · Temperature Sensors
Precise Temperature Sensing for Extreme Environments
Resistive Temperature Sensors Operable in Ultra-Low Temperature, High Magnetic Field, and Ultra-High Vacuum Environments
Cryogenic Compatible
100 mK
Precise Resistance Control
Ultra-Low Magnetoresistance
0.5 %
1.8 K, 14 T Magnetic Field
Exceptional Thermal Shock Resistance
10 k
200 K Repeated Thermal Shock Test
Key Parameters
Leading the Industry
Wide Range
Models for 0.1 to 420 K
High Field Compatible
Low Magnetoresistance, Accurate Temperature Sensing in Strong Magnetic Fields
High Reliability
Over 10,000 Room-Temperature to Liquid Nitrogen Thermal Cycles
Kelvinion Chip Thermometer Specifications
KChip
KChip.LT
KChip.ULT
➨ Model
➨ Sensing Parameters
1 Calibrated Temperature
Range
Minimum Temperature
Maximum Temperatur
1.4 K
420 K
0.3 K
420 K
0.1 K
420 K
2 Sensor Type
NTC RTD
3 Resistance 1
@300 K， 50 Ω
@1.4 K， 10 kΩ
@300 K， 40 Ω
@1.4 K， 2 kΩ
@300 mK，10 kΩ
@300 K， 30 Ω
@1.4 K， 1k Ω
@300 mK，5 kΩ
@100 mK，10 kΩ
4 Sensitivity 1，2
@4.2K
@300K
-500 Ω/K
-0.35 Ω/K
-150 Ω/K
-0.2 Ω/K
-25 Ω/K
-0.08 Ω/K
5 Accuracy 1，3
@4.2K
@300K
5 mK
60 mK
6 Resolution 1，4
@4.2K
@300K
8 μK
0.37 mK
26 μK
0.65 mK
52 μK
1.6 mK
7 Magnetically Induced
Temperature Drift 1，5 @12 T
@1.8K
@77K
@300K
< 0.5 % ( < 9 mK )
< 0.08 % ( <67 mK )
< 0.05 % ( <140 mK )
< 0.5 % ( < 9 mK )
< 0.08 % ( <67 mK )
< 0.05 % ( <140 mK )
< 0.5 % ( < 9 mK )
< 0.08 % ( <67 mK )
< 0.05 % ( <140 mK )
8 Heating Power1, 6
100 pW @1.4 K
10 fW @0.3 K
10 fW @0.1 K
9 Thermal Shock Tes
10,000 次以上
➨ Basic Information
10 Packaging
SD， CU，AA & BG
11 Sensor Magnetism
Non-Magnetic Materials & Package
12 Sensor Materials
Oxide Semiconductor Materials
13 Operating Environment
Radiation Environment 7
UHV 8
Compatible
Compatible
14 Verification
RoHS
- Typical Values
- Sensitivity, κ: κ=dR/dT, the sensitivity represents the relative change of resistance with temperature at the current temperature. A larger absolute value of sensitivity indicates the thermometer is more responsive to temperature changes
- Calibration Accuracy, dT: The error between the thermometer’s measured temperature (T) and the reference standard temperature (TR), dT = | T – TR |
- Resolution: The smallest temperature change measurable under specific conditions. Measured using Kelvinion Ultra, with excitation voltage set to 2 mV
- Magnetically Induced Temperature Drift, dT/T : The relative change of thermometer temperature under a magnetic field compared to zero-field, dT/T = ( TH-T0 ) / T0, where TH s the thermometer temperature in the magnetic field, T0 is the temperature at zero field. The drift is mainly caused by the magnetoresistance effect of the thermometer; Magneto-resistance，dR/R = ( RH-R0 )/R0, where RH is the sensor resistance in a magnetic field, and R0 is the sensor resistance at zero field. Smaller magneto-resistance indicates stronger tolerance of the sensor to magnetic fields
- Heating Power : The Joule power generated by the excitation current flowing through the thermometer during resistance measurement. Measured using Kelvinion Ultra, with excitation current set to 100 nA (KChip) and 1 nA (KChip.LT & KChip.ULT). 1 pW = 10-12 W, 1 fW = 10-15 W
- Radiation Environment: Using Co-60 as a γ-ray source at room temperature, with a dose rate of 40 Gy/min to accumulate a total dose of 10,000 Gy
- Ultra-high Vacuum Environment, UHV: Ultra-high vacuum with pressure below 10-5 Pa
Packaging
Various Packaging Options
for Versatile Installation
SD, CU, AA, and More…
➨ Packaging: All metal parts and cables are non-magnetic by design
Dimensions
KChip.SD
3.2 mm X 1.9 mm X 1.0 mm
( Length × Width × Thickness )
1 SD Package
( Kelvinion Chip )
Weight
Materials
Wiring
Maximum Operating Temperature
40 mg
Sapphire Substrate, Alumina Ceramic Case ( Fully Non-Magnetic )
Gold-Plated Copper Wires ( Fully Non-Magnetic )
420 K
Dimensions
KChip.CU
Φ7.95 mm X 4.35 mm
( Diameter × Thickness )
2 CU Package
( Kelvinion Chip )
Weight
Materials
Wiring
Maximum Operating Temperature
1.1 g ( Excluding Wirings )
Gold-Plated OFC ( Fully Non-Magnetic )
36 AWG Quad-Twisted Phosphor Bronze, 1 m ( Default )
420 K
Dimensions
KChip.AA
Φ3.0 mm X 8.5 mm
( Diameter × Thickness )
3 AA Package
( Kelvinion Chip )
Weight
Materials
Wiring
Maximum Operating Temperature
0.36 g ( Excluding Wirings )
Gold-Plated OFC ( Fully Non-Magnetic )
36 AWG Quad-Twisted Phosphor Bronze, 1 m ( Default )
420 K
Dimensions
KChip.BG
1.0 mm X 1.0 mm X 0.2 mm
( Length × Width × Thickness )
4 BG Package
( Kelvinion Chip )
Weight
Materials
Wiring
Maximum Operating Temperature
< 3.0 mg
Sapphire Substrate, Back Gold-Plated ( Fully Non-Magnetic )
50 μm Gold Wire, 25 mm ( Default )
420 K
Product Data
Down.List
Product Declarations
2D / 3D file
Kelvinion Manual
Consultation Purchase
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