The Lake Shore DRC-93C is a microprocessor-based temperature controller delivering three-term analog PID control for cryogenic research and industrial temperature regulation. It accommodates one or two interchangeable sensor input cards and provides dual five-digit displays with direct temperature readout in Kelvin, Celsius, or Fahrenheit when paired with compatible sensors like the DT-470 Series.
## Technical Specifications
**Control Architecture**
• Three-term PID control with proportional (GAIN), integral (RESET), and derivative (RATE) parameters, each adjustable from 0.1 to 99
• 16-bit analog-to-digital converter with 100 microvolt resolution
**Sensor Inputs & Display**
• Accepts one or two input cards; cards may differ in type for multimodal sensing
• Compatible with silicon sensors (9210-3, 9220-3) or proprietary Gallium-Aluminum-Arsenide sensors
• Optional 8229 Scanner Card extends capacity to 6 sensors
• Dual five-digit displays; 0.01 K resolution above 100 K, 0.001 K below 100 K
• Optional High Resolution Setpoint mode: 0.01 K above 40 K, 0.001 K below 28 K (DT-470 series)
• Direct sensor voltage display to 100 microvolt resolution; ohms and nanofarads also supported
**Setpoint Control**
• Standard setpoint settability: 0.1 degrees
• Optional High Resolution Setpoint: 0.01 degrees above 100 K, 0.001 degrees below 100 K
• Five-digit setpoint entry in temperature units; range determined by input card
**Heater Output**
• Maximum output: 50 watts into 50 ohm load
• Digital bar graph displays power as percentage of selected range
• Rear-panel rheostat enables maximum power limiting
• Optional W60 output stage: 60 watts into 25 ohm load
**Programming & Control**
• Internal program memory: up to 99 steps
• Math functions integrated
• IEEE-488 interface standard for remote control of all front-panel functions and dual-input data access
## Key Features
• Flexible sensor input architecture with mixed card types
• Dual independent sensor displays with selectable units
• High-resolution temperature setting and monitoring for low-temperature applications
• Field-adjustable heater power limiting
## Typical Applications
Cryogenic material characterization, helium liquefier operation, dilution refrigerator control, materials science research, industrial temperature management in low-temperature environments.
## Compatibility & Integration
Standard IEEE-488 GPIB interface enables networked instrument control and automated data logging. Compatible sensor ecosystems include DT-470 diode sensors and silicon resistance thermometers.
