June 30, 2023

The Popular LFI3751 Instrument Now Has Wider Applicability

The LFI3751 high-performance Autotune PID temperature control instrument has been used for cell monitoring, PCR, cancer therapy, quantum systems, and medical/biochemical/materials research equipment.  Now, this powerful controller has been CE certified, enabling access to markets that accept and require CE-marked devices.

Use the LFI3751 to drive up to ±5A to either thermoelectrics or resistive heaters with up to 9.5V compliance. This instrument operates from AC (100-240V, 50 or 60Hz). Expect stability as good as 0.001°C with thermistors. Even across ambient, this PID controller maintains precision temperature.

From the front panel, adjust temperature limits, current limits, setpoint, PID control values, sensor calibration data, and enable or disable output current. The Analog model has an external analog setpoint input via BNC on the rear panel. The 4-digit display shows actual or setpoint temperature or resistance, output current and voltage.

Autotune PID is a sophisticated algorithm for optimizing the PID control parameters to your load. With the touch of a button, the LFI3751 automatically optimizes control settings for most thermal loads, reducing overshoot or improving temperature stability. Autoranging sensor bias currents keep your sensor voltage in the optimal range for maximum signal to noise ratio. It comes with Addressable RS232 and USB control is available with an adapter cable. Free LabVIEW drivers simplify computer control. Benchlink software simulates the front panel control from your PC.

A Digital PID option provides better setpoint resolution and stability with low-resolution sensors such as RTDs. This option also offers improved overshoot suppression, 50% faster settling times, and faster calibration.

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