The Lake Shore DRC-93CA is a microprocessor-based temperature controller engineered for precise cryogenic temperature management. It delivers real-time analog control using three-term (PID) circuitry to maintain user-defined setpoints with high stability and accuracy. The controller supports internal programming with up to 99 steps and accommodates multiple sensor types, making it adaptable to diverse low-temperature applications.
## Technical Specifications
**Control Architecture**
• Three-term (PID) real-time analog control
• Setpoint management via analog voltage comparison with actual sensor signal
• Up to 1 Ampere heating output into a 50 Ohm resistive heater
• Internal programming capacity: 99 program steps
**Sensor Input & Measurement**
• Two sensor input card slots
• Two five-digit sensor displays with resolution of 0.01 K above 100 K and 0.001 K below 100 K
• 16-bit analog-to-digital converter with 100 microvolt resolution (full scale dependent on card configuration)
• Compatible with silicon sensors (9210-3 or 9220-3) and Gallium-Aluminum diode sensors
• Optional 8229 Scanner Conversion Card extends capability to 6 sensors
• Display modes: K, °C, °F, or sensor units (volts, ohms, nanofarads)
**Physical & Integration**
• Rack-mountable chassis configuration
• Input card compatibility: 9102 card configured as 9102-3 or 9102-6
• Math functions available
## Key Features
• True analog control with PID tuning for stable temperature maintenance
• Dual five-digit displays for simultaneous sensor monitoring
• Flexible sensor compatibility spanning silicon and diode technologies
• Expandable architecture supporting up to 6 sensors via optional scanner card
• High-resolution measurement: sub-millikelvin precision below 100 K
• Multiple temperature unit display options for operational flexibility
## Compatibility & Integration
The DRC-93CA represents an upgrade to the DRC-93C and integrates with Lake Shore silicon and Gallium-Aluminum diode sensor families. The modular input card design permits configuration flexibility through the 9102 series, while the optional 8229 Scanner Conversion Card enables multi-sensor applications without requiring additional controller hardware.
