A compact, micro-processor controlled PWHT unit with fully programmable temperature/time profiles, precise PID control, and integrated safety features — designed for consistent, repeatable tempering and stress-relief of welded components in small to medium workshops.

Marketing description

The Micro-Auto Programmable PWHT Unit delivers precise, repeatable post-weld heat treatment in a compact footprint. Its microprocessor-based controller allows engineers to create, store and run multiple ramp/soak/cool profiles with PID accuracy for optimum metallurgical results. Rugged heaters and insulated blankets (or a small chamber option) provide even heating and fast recovery; a digital display and USB/serial port make program transfer and data logging effortless. Built-in safety interlocks, over-temperature protection and alarm outputs protect both operator and workpiece. Ideal for field service, small fabrication shops and maintenance teams, the unit balances portability with professional PWHT capability.

Technical / Sales description

The Micro-Auto Programmable PWHT Unit is engineered to give fabricators and maintenance crews professional post-weld heat treatment control in a small, easy-to-use system. At its heart is a microprocessor controller with an intuitive keypad/display that supports multi-segment profiles: programmable ramp rates, target soak temperatures, soak durations, and controlled cooling sequences. Profiles can be saved and recalled for repeat jobs, reducing setup time and process variability.

Heating is provided by robust, low-mass cartridge elements (or flexible heating blankets for irregular shapes), mounted in an insulated housing or wrap. Closed-loop PID temperature control with high-accuracy thermocouple input (Type K standard) keeps the workpiece within tight tolerances during soak. The system includes automatic safety features: hardware over-temperature cutoff, software watchdog, phase loss detection,

Key features

Microprocessor-based programmable controller (multi-segment profiles)

PID closed-loop temperature control with thermocouple input

Multiple stored programs and manual/automatic modes

Fast heating elements or flexible heating blankets for irregular shapes

Over-temperature protection, phase loss and ground fault monitoring

Safety & compliance

Built-in over-temperature cutoff and redundant safety interlocks

Conforms to common industrial electrical safety standards (CE, IEC) — specify local certification requirements at order

Clear operating procedures and training recommended for field use

Typical applications

• Post-weld stress-relief and tempering of welded joints
• Pre-heating before welding on thick sections
• Heat treatment of flanges, fittings, small pressure vessels, shafts and forgings
• Field repairs and maintenance where furnace access is not available