The WAVELENGTH ELECTRONICS LFI-3751 is a high-performance, precision temperature control instrument designed for highly sensitive linear applications such as quantum technology, medical diagnostics, and spectroscopy. Operating via a smart Proportional-Integral-Derivative loop, the instrument delivers bidirectional current to Peltier-effect thermoelectric coolers or unidirectional power to resistive heating elements. It integrates seamlessly with a wide range of thermal feedback sensors including thermistors, RTDs, and IC linear sensors—to continuously monitor, stabilize, and lock target thermal loads precisely to an assigned setpoint.

Output Drive Capacity:

±5.0 A with a compliance voltage of ±9.5 V DC

Maximum Output Power:

Rated up to 45 Watts

Main AC Power Input:

100 to 240 VAC

Power Consumption Profile:

Peak maximum capacity at 160 VA

Temperature Control Stability:

Achieves tight stability better than 0.002°C

Operating Ambient Temperature:

0°C to 55°C

Storage Temperature Boundaries:

-40°C to +70°C

Autotune PID Optimization: Features a single-button automated tuning algorithm that characterizes a load's thermal time constants to calculate ideal P, I, and D parameters.

Dual Control Modalities: Offers Setpoint Response Tuning for fast, overshoot-free multi-temperature steps, and Disturbance Rejection Tuning to counter localized thermal or air current transients.

Comprehensive Safe Shutdown Guards: Integrates software-monitored high/low temperature load trip limits and independent, adjustable positive and negative physical current limits.

Integrated Software Ecosystem: Supported by native National Instruments LabVIEW® drivers, complex error-handling registers, and Benchlink panel-simulation emulation tools.