The HR Series is a new line of high-reliability cryogenic temperature sensors for mission-critical applications. Starting with well-established temperature sensor technology, Lake Shore has created a family of off-the-shelf sensors that have completed rigorous testing procedures to assure users of increased reliability.
For When the Best Needs to Be Better
It is necessary to scrutinize sensors more closely when cryogenic temperature control or monitoring is a significant component of a system and the cost of sensor failure is significantly higher than the cost of the sensor. Prime examples of this are projects where the results are worth more than the sum of their parts, including:
- Fusion reactors
- Space telescopes
- Maglev locomotives
- Research satellites
Image Credit: Lake Shore Cryotronics Inc.
Features of HR Series Sensors
- Reduced lead time
- No hidden costs: Customers only pay for the sensors that are purchased
- Full material traceability for 15 years
- Confidence is gained from the test protocol
- Resistance and sensitivity data is available for all sensors
Reduce Risk on Critical Projects
Following standardized testing procedures, these sensors are built on regular production schedules and stocked for quick delivery, resulting in lead times equivalent to standard commercial sensors. The predefined testing protocol also reduces paperwork since it is unnecessary to define different detailed sensor requirements for each program.
In the past, sensor procurement for critical programs required that additional sensors for destructive qualification tests be purchased for each lot, raising the project’s total cost without increasing the number of sensors available for installation. HR sensors are different.
Lake Shore conducts the qualification testing for each lot, and sensor buyers receive the screening and qualification test report at no extra cost. Using HR sensors, users only pay for the sensors they require.
Test Protocols Include:
- Full lot traceability for at least 15 years
- Fine hermetic seal
- Burn-in (one week)
- Before sealing, the sensor will undergo an independent inspection
- Constant acceleration (20000 gs)
- Gross hermetic seal
- Particle impact noise detection (PIND) test
- Visual inspection to MIL standards
- X-Ray (internal defects and wire clearance)
- Thermal cycling (repeated between 298 and 4.2 K)
- Wire bond cross-section
- Independent destructive physical analysis
- Vibration testing
- Life test (up to 2,000 hours)
- External bond pad bondability
- Mechanical shock
- Die shear strength
- Wire bond strength
- Thermal shock (100 shocks)