Cryogenic Temperature Sensors

SensorSelectionGuide

 

 Temperature range Standard curve (interchangeable) Radiation resilient Performance in magnetic field Vacuum compatible Best for
Negative Temperature Coefficent RTDs
Cernox®
Cernox sensor
0.10 K to 420 K Best choice for cryogenicsBest choice above 1 KUltra-high (to 10‑10 Pa)Wide temperature range; best accuracy and precision in presence of magnetic fields or radiation; different models to maximize sensitivity at various temperatures; most popular cryogenic sensor family
Interchangeable Rox™
Interchangeable Rox sensor
0.05 K to 40 KGoodHigh (to 10‑4 Pa)When sensor interchangeability is desired below 1.4 K or in the presence of moderate magnetic fields
Ultra-low temperature Rox™
ULT Rox sensor
<0.01 K to 40 KGoodHigh (to 10‑4 Pa)Temperature measurement below 50 mK
Germanium
Germanium sensor
0.05 K to 100 K Not recommendedHigh (to 10‑4 Pa)Highly stable measurements over long periods of time
Diodes
Silicon
Silicon diode
1.4 K to 500 K 

Fair above 60 K

Ultra-high (to 10‑10 Pa)Great value general purpose sensor for cryogenic applications down to 1.4 K that don't involve magnetic fields or radiation
Positive Temperature Coefficient RTDs
Platinum
Platinum sensor
14 K to 873 K

Fair above 30 K

High (to 10‑4 Pa)Accurate and repeatable measurements above 500 K, up to 873 K; affordable sensor for applications where temperatures remain above 14 K
Other
Capacitance
Capacitance sensor
1.4 K to 290 K  

Excellent

High (to 10‑4 Pa)Highest control stability when in the presence of massive magnetic fields at cryogenic temperatures; requires a secondary sensor to provide temperature values
Thermocouple Wire
THermocouple wire
1.2 K to 1543 K FairUltra-high (to 10‑10 Pa)Situations where the temperature exceeds 600 °C (873 K); lowest priced sensor for other temperature ranges, but at the cost of significant loss of accuracy
Specialty
HR Series
High reliability
20 K to 420 K 

Excellent

Ultra-high (to 10‑10 Pa)

Space applications



DT-670-SD features

  • Best accuracy across the widest useful temperature range—1.4 K to 500 K—of any silicon diode in the industry
  • Tightest tolerances for applications from 30 K to 500 K of any silicon diode to date
  • Rugged, reliable Lake Shore  SD package designed to withstand repeated thermal cycling and minimize sensor self-heating
  • Conformance to standard Curve DT-670 temperature response curve
  • Variety of packaging options
DT-670E-BR features
  • Temperature range: 1.4 K to 500 K
  • Bare die sensors with the smallest size and fastest thermal response time of any silicon diode on the market today
  • Non-magnetic sensor
DT-621-HR features
  • Temperature range: 1.4 K to 325 K*
  • Non-magnetic package
  • Exposed flat substrate for surface mounting

*Calibrated down to 1.4 K, uncalibrated (Curve DT-670) to 20 K

Cernox® Features

  • Low magnetic field- induced errors
  • Temperature range of 100 mK to 420 K (model dependent)
  • High sensitivity at low temperatures and good sensitivity over a broad range
  • Excellent resistance to ionizing radiation
  • Bare die cryogenic temperature sensor with fast characteristic thermal response times: 1.5 ms at 4.2 K, 50 ms at 77 K
  • Broad selection of models to meet your thermometry needs
  • Excellent stability
  • Non-magnetic package options available (AA, BC, BG, BR)
  • Variety of packaging options

Temporarily unavailable — please consider Cernox® as an alternative.

Germanium Features

  • Recognized as a “Secondary Standard Thermometer”
  • High sensitivity provides submillikelvin control at 4.2 K and below
  • Excellent reproducibility better than ±0.5 mK at 4.2 K
  • Various models for use from 0.05 K to 100 K
  • Excellent resistance to ionizing radiation

RX-102B-RS Features

  • Useful below 10 mK; calibrations down to 10 mK available
  • Include additional extrapolated points to 5 mK
  • Optical shielding reduces unwanted sensor heating

RX-102A Features

  • Standard curve interchangeable
  • Good radiation resistance
  • Useful down to 50 mK
  • Low magnetic field-induced errors

RX-202A Features

  • Standard curve interchangeable
  • Good radiation resistance
  • Monotonic from 50 mK to 300 K
  • 4× improvement in magnetic field-induced errors over other ruthenium oxides

RX-103A Features

  • Standard curve interchangeable
  • Good radiation resistance
  • Best choice for interchangeability from 1.4 K to 40 K
  • Low magnetic field-induced errors

Capacitance Features

  • Virtually no magnetic field-induced errors
  • Capable of mK control stability in the presence of strong magnetic fields
  • Monotonic in C versus T to nearly room temperature

*Patent #3,649,891, exclusively assigned to Lake Shore Cryotronics, Inc.

Thermocouple Wire Features

Type E (Chromel-Constantan)

Has the highest sensitivity among the three standard thermocouple types typically used at low temperatures (types E, K, and T). The best choice for temperatures down to 40 K.

Type K (Chromel-Alumel)

Recommended for continuous use in inert atmospheres. Has a sensitivity of 4.1 mV/K at 20 K (about ½ of Type E).

Platinum Features

  • Temperature range: 14 K to 873 K (model dependant)
  • Conforms to IEC 751 standards down to 70 K
  • High reproducibility: ±5 mK at 77 K
  • Low magnetic field dependence above 40 K
  • Excellent for use in ionizing radiation
  • SoftCal™ calibration available
  • Non-magnetic packages available (all PT-102 and PT-103 variants)

Features of the HR Series Sensors

  • Full material traceability for 15 years
  • Resistance and sensitivity data available for all sensors
  • Reduce lead time
  • Gain confidence from our test protocol
  • No hidden costs—pay only for the sensors you buy