CMT-290 Ultra-Low Temperature Controller
CMT-290 supports up to 10 temperature sensors including diodes, thermocouples, and RTDs, enabling precise multi-point cryogenic temperature control for research applications.
CONTACT USProduct Overview
The CMT-290 Ultra-Low Temperature Controller is engineered for precise cryogenic temperature measurement and control, featuring high resolution, excellent accuracy, and long-term stability. It supports flexible multi-sensor inputs, advanced dual-loop control, and efficient heater management — providing reliable performance for critical scientific and industrial applications.
Equipped with Ethernet, RS-485, and USB interfaces, the CMT-290 enables seamless data transmission over long distances, ensuring convenient integration with your existing systems. The balanced dual constant current source design minimizes sensor heating at ultra-low temperatures, promoting accurate and stable measurements even under demanding conditions.
Key Features
- High Measurement Accuracy — Achieves optimal precision down to 10mK.
- Wide Temperature Range — Supports measurements as low as 300mK using compatible NTC or RTD sensors.
- Dual Independent Control Loops — Each loop configurable with any of the available sensor inputs.
- Flexible Heater Configuration — Expandable to two 100W or one 200W low-noise heater, with self-tuning closed-loop control.
- Multi-Sensor Compatibility — Supports diode sensors, Cernox sensors, platinum RTDs, thermocouples, and more.
- User-Friendly Touch Interface — 5" capacitive color display with multilingual support (English, Chinese).
- Stable Communication Options — Ethernet, RS-485 (up to 1200m), USB; supports MODBUS and custom ECT protocols.
Technical Specifications
Measurement Parameters
| Item | Specification |
|---|---|
| Measurement Accuracy | Up to 10mK |
| Measurement Range | Down to 300mK with NTC/RTD sensors |
| Sensor Input Channels | Standard 2 channels, expandable to 10 |
| Sensor Types Supported | Diode, Cernox, platinum RTD, thermocouple |
| Heater Output | Three independent outputs, ±10V analog, alarm/relay control |
| ADC Resolution | 24-bit, 10 readings/sec per channel |
| Thermoelectric Compensation | Supports resistance sensor EMF compensation |
| Networking Capability | Supports multi-device network operation (up to 247 units) |
Control Parameters
| Item | Specification |
|---|---|
| Control Loops | Dual loops: up to 200W and 100W low-noise heating |
| Signal Filtering | Adjustable window: 1–10% FS, 2–64 filter points |
| Control Modes | Auto-tuning, manual setting, region switching |
| PID Control | Ratio: 0–1000 (0.1 resolution) Integral: 0–1000 (0.1 resolution) Differential: 0–200 (0.1 resolution) Manual: 0–100% (0.01% resolution) |
| Region Function | Automatic sensor switching, continuous control from 300mK to 1505K |
| Safety Features | Setpoint limits, curve limits, output slope limits, power stage protection, heater safety shutdown, short-circuit protection |
Interface & Communication
| Item | Specification |
|---|---|
| Display | 5" color capacitive touchscreen |
| Display Units | Kelvin (K), Celsius (°C), Voltage (V), Resistance (Ω) |
| Temperature Display Resolution | 0.0001 K |
| Communication Interfaces | Ethernet, RS-485, USB |
| Transmission Distance | RS-485 up to 1200m; Ethernet virtually unlimited |
| Communication Protocols | ECT custom protocol, MODBUS support |
| Software Integration | LabView driver available |
| Data Storage | Up to 64 temperature curves, including 20 standard calibration curves |
Application Fields
- Cryogenic research and superconductivity
- Quantum device testing and material science
- Precision laboratory temperature control
- Industrial low-temperature measurement systems
Why Choose CMT-290?
The CMT-290 Ultra-Low Temperature Controller is designed for high-performance measurement environments that demand accuracy, stability, and flexible control. Its advanced features and robust build quality make it an ideal solution for research institutes, laboratories, and high-end industrial applications requiring ultra-low temperature precision.
Sensor
Sensor input performance table
