ADDITEL 835 – Portable Calibration Bath

The Additel 835 is a portable temperature calibration bath that utilizes liquid as the heat transfer medium. It is designed to bridge the gap between laboratory-grade accuracy and field portability.

Key Highlights:

  • Superior Uniformity: The circulating liquid system ensures much more stable and consistent temperature distribution than a dry well, making it ideal for calibrating multiple probes or sensors with irregular shapes.
  • True Portability: Compact and lightweight design allows for easy transport to the field, no longer limiting high-precision calibration to the lab.
  • Broad Temperature Range: Available in models capable of reaching temperatures from -35°C to 160°C (with specific options covering up to 250°C).
  • Intelligent Functions: Features a color touchscreen and an optional Process Calibrator (PC) for measuring electrical signals (mA, Volt) and full HART communication.
  • Clean & Safe Operation: Engineered with a specialized spill-proof design to prevent liquid leaks during transport.

SKU SKU-Additel 835 Categories , Brand:

The Additel 835 Portable Liquid Bath provides the high accuracy of a laboratory bath with the convenience of a portable dry well. By using liquid as the thermal medium, it delivers unmatched performance for field calibration across a wide temperature range of -30°C to 250°C.

1. The Power of Liquid The primary advantage of the Model 835 over traditional dry wells is the medium itself:

  • Superior Uniformity: Continuous stirring of the liquid ensures excellent Radial and Axial uniformity, meaning the temperature is identical at every point in the bath.
  • No Loading Effect: You never have to worry about probe fit. The liquid perfectly surrounds any sensor shape, whether it is a large diameter probe, a short-stem sensor, or an oddly shaped device.
  • Efficient Heat Transfer: Liquid transfers heat more effectively than air or metal-to-metal contact, allowing probes to reach the target temperature with higher precision.

2. Technical Specifications

  • Temperature Range: Models available from -35°C to 160°C (General range covers -30°C to 250°C).
  • Stability: ±0.01°C—remains exceptionally stable even at temperature extremes.
  • Uniformity: ±0.02°C.
  • Immersion Depth: Approximately 145 mm (5.7 inches), deep enough for full immersion of standard reference probes.

3. Process Calibrator (PC Option) Selecting the PC option transforms the bath into a mobile calibration station:

  • Multi-Channel Readout: Built-in channels for reading your Reference thermometer and the DUT (Device Under Test).
  • Full HART Communicator: Communicate, configure, and calibrate HART-enabled devices directly without additional tools.
  • Data Logging & Documentation: Create tasks and save As-Found / As-Left data directly on the device.

4. Engineered for Portability

  • Lightweight: Significantly lighter than traditional baths; designed for one-handed transport to the job site.
  • Spill-proof Cover: A specially designed transport lid prevents messy liquid spills during transit—a common issue with other portable baths.
  • Color Touch Screen: Features a vibrant interface that displays Stability Trends, allowing you to visually confirm when the temperature is steady enough to record.

5. Intelligence & Connectivity

  • Self-Calibration: Automatically realign the internal sensors using an external reference probe to maintain peak accuracy.
  • Connectivity: Full Wi-Fi and Bluetooth support for modern data management.
  • ISO 17025 Accredited: Each unit is supplied with an internationally recognized accredited calibration certificate.

Specifications:

  • Temperature Range: -30°C to 250°C (Model dependent)
Measurement Range Resistance per step :  -30°C to 250°C
Accuracy Maximum: ±0.1°C
Readings
Logging Rate
Battery
Calibration Certificate Available Separately