A complete connection diagram for a digital temperature control panel for a PPR welder. The green control panel (with a digital display and three buttons) is connected via a red wire to a high-power thyristor (SCR), which is screwed to the aluminum heating plate. A white ceramic temperature sensor probe is connected to the control panel via red and black wires, enabling real-time, accurate temperature measurement and control of the heating plate.

A complete connection diagram of a PR welding machine's digital temperature control board (rear view). The green control board's backside features a main control chip and screw terminals, connected via red wires to a high-power driver element (SCR/thyristor) mounted on a wavy aluminum heat sink for controlling heating power. The white temperature sensor probe is connected to the control board via red and black wires.

Welding machine PCB circuit board

Welding Machine PCB Circuit Board is an advanced control solution for PPR and HDPE welding machines, offering precise temperature management and reliable power control.
Equipped with a digital temperature sensor and intelligent control chip, it maintains stable heating up to 450°C, ensuring consistent welding performance.

Product Parameters

Product Details

This control panel features a clear LED display and three-button control system, allowing users to easily set and monitor temperatures.

Compatible with both 110V and 220V power supplies, it’s universally compatible and ideal for OEM customization and equipment upgrades.

Key Features:

Intelligent Digital Temperature Control Panel

Memorizes operating temperature and automatically resets the temperature the next time the unit is powered on

Accurate temperature sensing up to 450°C

Compatible with PPR/HDPE welders

110V/220V dual voltage for easy integration

High-quality PCB design for stable performance

Custom development and technical support available

Applications:
Perfectly suitable for heating plates in PPR welders, HDPE welders, and HDPE butt welders

FAQ:

Can you customize PCB boards for our welding machines?

Yes. We provide custom PCB design and development services for PPR, HDPE, and other plastic welding machines. Our engineers can tailor the circuit board layout, voltage, control logic, and temperature range according to your specific requirements.

How do you ensure product quality?

Every PCB undergoes strict quality inspection, including high-temperature endurance testing, functional testing, and voltage stability verification. We follow ISO-standard production and use premium electronic components to guarantee long-term stability and precision.

Do you offer OEM or ODM services?

Absolutely. HaoTian supports both OEM and ODM cooperation. We can print your brand logo, customize packaging, and integrate the circuit board into your existing welding machine models.

What is the temperature control range of your PCB boards?

Our standard models support 55°C to 450°C adjustable range, suitable for most PPR, PE, and PB pipe welding applications. For constant-temperature models, we also offer 300°C auto-heating versions upon request.

Can I get technical support after purchase?

Yes. HaoTian provides full technical assistance, including installation guidance, circuit connection instructions, and post-sale troubleshooting. Our support team ensures smooth integration and stable performance for all clients.

About Us

Haotian Factory was founded in 2005. Haotian has a factory building of 12000 square meters. Haotian can independently design and produce all PPR welding machines, and accept customization according to your requirements. For 20 years, Haotian has never forgotten its mission – to safeguard health and safety. The factory uses the best materials and produces high-quality welding machines through automated production lines and high-tech quality control machines. Most importantly, Haotian guarantees that all the melting machines manufactured are qualified and comply with international standards.

Welding machine PCB circuit board

Product Parameters