Additel 835: The Next-Gen Portable Temperature Calibration Bath

The ADT835 sets a new benchmark in the field of portable temperature calibration. Designed for maximum performance in a compact form factor (90 x 90 mm), the ADT835 combines power, precision, and portability—making it an essential tool for professionals in calibration labs, field service, and industrial environments.

Compact Yet Powerful: Designed for Versatile Sensor Calibration

Unlike traditional dry-well or hybrid baths, the ADT835 portable calibration bath is engineered to accommodate a wide range of temperature sensors—regardless of type, size, or shape. This flexibility makes it ideal for industries like pharmaceuticals, biotech, and food processing, where calibration of sanitary or non-standard sensors is often complex and costly.

Its smart design supports both batch calibration and on-site field calibration, all while maintaining superior temperature stability, uniformity, and accuracy (±0.1°C). Whether you’re dealing with flanged probes, short stem RTDs, or bimetallic thermometers, the ADT835 delivers reliable results without the need for custom inserts.

Rapid Heating & Cooling: Time-Saving Performance

Efficiency is key in temperature calibration. The ADT835 delivers fast thermal transitions and short stabilization times thanks to advanced non-overshoot control algorithms and predictive temperature modeling.

• ADT835-150 / ADT835PC-150:
  • Heats up to 150°C in 30 minutes
  • Cools to -25°C in 45 minutes / -30°C in 55 minutes
• ADT835-250 / ADT835PC-250:
  • Heats to 250°C in 55 minutes
  • Cools to 100°C in 30 minutes / 33°C in 45 minutes

These rapid response times significantly reduce calibration cycle times, improving throughput and operational productivity.

Batch Calibration: Maximum Efficiency, Minimal Downtime

The ADT835 bath supports high-throughput batch calibration, accommodating:

• Up to 4 sanitary temperature sensors (Ø50 mm)
• Up to 40 stem-type sensors (Ø6.35 mm)

With a bath depth of 155 mm, users can calibrate multiple sensors in a single operation—reducing factory downtime and increasing calibration efficiency.

Dual-Zone Heating Technology: Stability in Challenging Environments

Field conditions can compromise calibration accuracy due to power fluctuations, airflow inconsistencies, or ambient temperature variations.

The ADT835 combats these challenges with its innovative dual-zone heating system:

• External heater near the vapor chamber ensures stable baseline control
• Internal immersed heater responds dynamically to environmental changes

This dual-layer approach guarantees precise and stable temperature control even in demanding environments.

Integrated High-Precision Process Calibrator 

The ADT835PC model features a built-in 3-channel process calibrator, eliminating the need for multiple devices on-site. It includes:

• High-accuracy thermometer
• Multimeter
• 24V loop power supply
• HART communicator
• Quick-push electrical connectors

This multi-functional integration streamlines operations, making the ADT835 an all-in-one solution for temperature, electrical, and loop signal calibration tasks.

Automated Self-Calibration: Set It and Forget It

To ensure long-term measurement accuracy, the ADT835 offers automated self-calibration for its internal reference thermometer. This feature:

• Eliminates manual data entry
• Reduces calibration complexity
• Maintains high temperature control precision
• Saves valuable time (compared to traditional methods)

Smart Remote Control: Work Anywhere

With Bluetooth, Wi-Fi hotspot, and LAN/Cloud connectivity, the ADT835 can be controlled remotely via PC or mobile devices. This enables:

• Parallel operations
• Real-time data access
• Remote diagnostics and monitoring

Whether you're in the lab or in the field, the ADT835 keeps you in control.

Built-in Safety & Maintenance Features

The ADT835 includes several design elements for fluid safety and operational protection:

• Stainless steel, corrosion-resistant fluid tank
• Overflow management system
• Visual high-temperature alerts for fluids >50°C
• Secure drain ports for easy liquid removal
• Dust-resistant and vibration-tested design

These features enhance both user safety and device longevity, especially in industrial calibration settings.

Additel 835: The Complete Calibration Solution

From advanced dual-zone heating to integrated process calibration and remote control, the Additel ADT835 is more than a calibration bath—it’s a complete, high-efficiency temperature calibration system.

Perfect for laboratories, manufacturing, or regulated industries, the ADT835 offers unmatched performance, flexibility, and workflow optimization.

🔗 Ready to Upgrade Your Calibration Equipment?

Discover how the Additel ADT835 Portable Calibration Bath can optimize your calibration workflows with unmatched precision and efficiency.
👉 Discover more about ADT835

📞 Want to Learn More or Request a Quote?

Get in touch with our team to explore how the Additel ADT835 can meet your temperature calibration needs. We're here to help you choose the best solution for your application.
👉 Contact us at: sales@avtekconsulting.