Lake Shore 120CS
The Lake Shore 120CS is a cryogenic temperature controller designed for precise temperature control in research and industrial applications. It offers stable and accurate temperature management for various cryogenic systems.
- Model
- Lake Shore 120CS
- Calibration
- Available on request
- Price
- $200
- Status
- In stock
- RFQ ref
- 120CS
This unit
The Lake Shore 120CS is a precision DC current source engineered for stable, accurate current outputs in sensor excitation and measurement applications. It delivers switch-selectable output current from 1 µA to 100 mA with an 11 V compliance voltage, ensuring constant current across varying load conditions. Front-panel polarity reversal and rear-panel external programming via resistor network enable flexible current configuration. The unit is manufactured in the USA. Note: The Model 120CS has been discontinued; Lake Shore recommends the Model 121 DC current source as a replacement.
Technical Specifications
Output Current: 1 µA to 100 mA (switch-selectable)
Compliance Voltage: 11 V (up to 50 mA); 10 V (above 50 mA)
Current Accuracy: 0.05% of output at 10 µA
Temperature Coefficient: <0.01% of output per °C
Line Regulation: <0.01% change
Load Regulation: <0.01% change
AC Current Ripple: <0.01% of scale
Operating Temperature: 15 °C to 35 °C
Power Supply: External AC wall-mount (120 VAC or 210–250 VAC selectable); jumper-configurable
Physical: 106 mm W × 41 mm H × 158 mm D; 0.5 kg
Key Features
Switch-selectable current range simplifies bench operation
Front-panel OUTPUT switch enables rapid polarity reversal
External programming input via rear-panel terminal block allows custom current levels from 1 µA to 100 mA
Compliance indicator (CMPL) alerts when voltage limit is reached
Compact benchtop form factor with minimal footprint
Typical Applications
Sensor excitation for resistance temperature detectors and diode sensors
Precision current biasing in cryogenic measurement systems
Stable DC current sourcing across variable impedance loads
Compatibility & Integration The 120CS excites Lake Shore 400-Series, 500-Series, and TG-120 Diode Sensors. It operates reliably in liquid helium (LHe) and liquid nitrogen (LN2) environments, supporting low-temperature measurement workflows.
Specifications
| Parameter | Value |
|---|---|
| Voltage / Current Range | 1 µA to 100 mA output |
Lake Shore 120CS — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Lake Shore 120CS. All calibrations are performed to NIST-traceable standards and ship with a certificate. Turnaround is typically 1–3 business days after receipt.
Lake Shore 120CS price
This Lake Shore 120CS is listed at $200. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Lake Shore 120CS calibration cost
NIST-traceable calibration for the Lake Shore 120CS is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Turnaround is 1 to 3 business days after receipt. See full calibration details →
