NPH Quartz Immersion Heaters Installation Operaration and Maintenance Instructions

Quartz Immersion Heaters for Corrosive Chemical & Acid Tank Applications

Industrial Quartz Immersion Heaters

NPH Quartz Immersion Heaters are designed for heating corrosive chemical solutions, plating baths, acid tanks and high-purity process liquids where conventional metal sheath heaters may be unsuitable. The heating element is enclosed within a heavy-wall quartz tube that provides excellent chemical resistance, contamination-free operation and efficient heat transfer directly into the solution.

Quartz immersion heaters are widely used throughout electroplating, metal finishing, semiconductor manufacturing, chemical processing and laboratory industries because of their ability to withstand many aggressive chemical environments while maintaining solution purity. Their transparent quartz construction also allows visual inspection of the heating surface, helping operators identify scale buildup or contamination before it affects performance.

Available in a variety of voltages, wattages and custom configurations, quartz immersion heaters provide reliable, energy-efficient heating for demanding industrial applications.

Electroplating & Metal Finishing

Quartz immersion heaters are commonly used for heating nickel plating baths, chrome plating solutions, copper plating systems, electropolishing tanks and chemical conversion coating processes. Their corrosion-resistant construction makes them ideal for many acidic plating environments.

Semiconductor Manufacturing

Semiconductor fabrication facilities often utilize quartz heaters because of their high purity construction and compatibility with many chemical processing solutions used during wafer cleaning, etching and manufacturing operations.

Chemical Processing

Quartz heaters are suitable for numerous chemical processing applications requiring contamination-free heating and resistance to many corrosive solutions.

Laboratory & Research Facilities

Research laboratories frequently use quartz immersion heaters for precision temperature control of chemical baths, analytical equipment and pilot process systems.

Water Treatment Systems

Quartz heaters are used in deionized water systems, rinse tanks and specialty water treatment applications where cleanliness and reliability are important.

• Pickling tanks
• Acid process tanks
• Plating baths
• Cleaning tanks
• Rinse tanks
• Semiconductor wet processing
• Chemical mixing tanks
• Laboratory process vessels
• Deionized water heating
• Surface finishing systems

Construction Features

NPH Quartz Immersion Heaters are manufactured using durable industrial-grade components designed for long service life and dependable operation.

Typical construction features include:

• Heavy-wall fused quartz sheath
• Replaceable heating element assembly
• Polypropylene protective guard
• Corrosion-resistant mounting hardware
• Vapor-resistant terminal enclosure
• Flexible liquid-tight conduit
• High-temperature lead wires
• Optional RTD or thermocouple sensors
• Single or three-phase designs

Quartz tubes provide excellent heat transfer while helping protect the heating element from direct exposure to many chemical solutions.

Features & Benefits

Excellent Chemical Resistance

Quartz offers superior resistance to many acids and chemical solutions commonly found in plating and chemical processing applications.

Contamination-Free Heating

The quartz sheath helps maintain solution purity and reduces the risk of product contamination.

Efficient Heat Transfer

Direct immersion heating delivers heat directly into the process liquid, reducing energy losses and improving heating efficiency.

Visual Inspection Capability

The transparent quartz construction allows operators to visually inspect heater surfaces for buildup, scaling or process contamination.

Replaceable Heating Elements

Many quartz heater designs allow replacement of the heating element without replacing the complete assembly.

Custom Engineered Designs

Available in numerous voltages, wattages, immersed lengths and mounting configurations to suit specific process requirements.

Long Service Life

Properly selected quartz immersion heaters provide reliable operation and extended service life in many corrosive environments.

Available Configurations

Quartz immersion heaters are available in several styles including:

• Over-the-side immersion heaters
• Quartz heaters with polypropylene guards
• Straight element designs
• U-bend element configurations
• Single phase heaters
• Three phase heaters
• Custom watt density designs
• Temperature-controlled systems
• Custom engineered process heaters

Optional Safety Features

For enhanced equipment protection and process reliability, optional safety features include:

• High-limit temperature protection
• Low liquid level protection
• Thermal cut-outs
• RTD temperature sensors
• Thermocouple sensors
• Digital temperature controllers
• Ground fault protection
• Vapor-resistant terminal enclosures

These safety devices help protect both the heater and process solution from overheating or low liquid conditions.

Information Required for Heater Selection

To properly size and select a quartz immersion heater, please provide:

• Chemical composition
• Chemical concentration
• Tank dimensions
• Solution volume
• Operating temperature
• Desired heat-up time
• Available voltage
• Single or three-phase power
• Minimum liquid level
• Indoor or outdoor installation
• Control requirements
• Hazardous location requirements (if applicable)

Providing complete application information helps ensure proper heater selection, performance and service life.

Quartz Immersion Heater FAQs

What chemicals can quartz immersion heaters be used in?

Quartz immersion heaters are commonly used in many acids, plating solutions, deionized water systems and chemical processing applications. Chemical compatibility should always be verified before heater selection.

What are the advantages of quartz immersion heaters?

Quartz immersion heaters offer excellent chemical resistance, contamination-free heating, efficient heat transfer, visual inspection capability and long service life.

Can quartz immersion heaters be supplied with temperature controls?

Yes. Quartz immersion heaters can be supplied with digital temperature controllers, thermostats, RTD sensors, thermocouples and high-limit safety controls.

Are custom quartz immersion heaters available?

Yes. NPH manufactures custom quartz immersion heaters in a wide range of voltages, wattages, immersed lengths and configurations.

What causes premature failure of quartz immersion heaters?

Common causes include improper chemical selection, low liquid levels, mechanical damage, excessive scaling and operation outside recommended limits.

What information is required to size a quartz immersion heater?

Chemical composition, concentration, tank dimensions, operating temperature, voltage, solution volume and desired heat-up time are typically required.