Accelerated Heating and Cooling for Maximum Efficiency

Efficient calibration depends on fast temperature transitions, minimal stabilization times, and sufficient bath capacity. The ADT835 delivers on all fronts with advanced variable-speed prediction and non-overshoot control technology, achieving an accuracy error band of ±0.1°C throughout the heating and cooling process.  These rapid thermal response times dramatically reduce calibration cycles compared to traditional calibration baths, significantly improving throughput and overall productivity.

Versatile Sensor Calibration with the ADT835

Calibrating a wide range of temperature sensors is a challenge, particularly in industries like pharmaceuticals, biotechnology, and food processing, where specialized or sanitary sensors are common. These sensors often feature large flanges, ferrule nuts, or short probes, making on-site calibration with traditional dry wells difficult and costly. Users may need to invest in custom dry wells, yet still face limitations in achieving accurate results. The ADT835 portable calibration bath addresses these challenges by providing a stable and uniform temperature field, ensuring precise calibration for sensors of various types, sizes, and shapes, without the need for custom solutions.

Enhanced Efficiency for Batch Calibration

Maximizing calibration efficiency directly reduces factory downtime. To facilitate batch calibration, portable temperature sources must accommodate multiple sensors simultaneously. The ADT835 features a bath size of 90mm x 90mm with a depth of 155mm, enabling the calibration of multiple sensors in one operation. This capacity supports the simultaneous calibration of up to four 50mm diameter sanitary temperature sensors or up to forty 6.35mm diameter rod-type temperature sensors, significantly improving operational efficiency

Innovative Dual Heating Technology for Enhanced Stability

Field environments often introduce challenges like power fluctuations from heavy equipment, inconsistent airflow from industrial fans, and ambient temperature shifts caused by variable-frequency air conditioning systems. These factors can significantly impact calibration bath performance and compromise temperature control stability.  The ADT835 overcomes environmental challenges with its innovative dual-zone heating technology. An external heating system near the vapor chamber delivers stable, consistent temperature control, while an internal heating element immersed in the fluid provides rapid, dynamic response to disturbances. This advanced design greatly improves resistance to external interferences, ensuring reliable and accurate performance—even in demanding field conditions.

Optional Integrated Three-Channel High-Precision Process Calibrator

The ADT835 offers an optional built-in three-channel high-precision process calibrator, designed to streamline field operations. This feature eliminates the need to carry multiple devices on-site.

The integrated calibrator combines the functions of a thermometer, multimeter, 24V power supply, and HART handheld communicator, enabling the ADT835 to manage a wide range of calibration tasks effectively.

Each channel is equipped with quick push connectors, allowing for tool-free, rapid connections regardless of the connector type. Channel 1 serves as a reference channel, compatible with smart secondary reference PRTs or user-provided reference thermometers. Channels 2 and 3 are designated for device under test (DUT) connections, supporting RTDs, thermocouples (TCs), temperature transmitters, HART temperature transmitters, and temperature switches.

Automated Self-Calibration for Internal Reference Sensor

Periodic calibration is essential for maintaining temperature control accuracy in calibration baths. Traditional methods involve manually recording and calculating errors at each calibration point, a process that can be time-consuming and complex, often taking over an hour.

The ADT835 simplifies this with its automated self-calibration program. This feature eliminates the need for manual data entry and calculations, streamlining the calibration process and ensuring accurate temperature control with minimal user intervention.

Remote Control for Parallel Operation

The ADT835 features advanced remote control capabilities to facilitate parallel operations:
Point-to-Point Mode: Connects to a mobile phone or computer via Bluetooth or WiFi hotspot, allowing direct operation of the bath from these devices.

Cloud Mode: Connects to the network through WiFi or LAN port, enabling remote management of multiple calibration baths via mobile phones or computers in point-to-point mode.

These smart remote control options enhance operational flexibility and efficiency.

Advanced Fluid Protection Design for Ease of Use and Maintenance

The ADT835 incorporates a professional fluid protection design to ensure safe and convenient operation. It features an integrated overflow tank and drain port to manage fluid efficiently and facilitate easy transport, mitigating environmental contamination and safety risks. The bath and tank body are constructed from rust-resistant stainless steel, which is easy to clean and durable, even in the presence of irritating or corrosive contaminants.

The ADT835 also includes a sealed top cover with a hand-tight screw to effectively prevent fluid spill during transport and calibration. Additionally, a protective power switch design minimizes the risk of oil mist accumulation on power switch contacts, enhancing reliability and reducing failure likelihood. For user safety, a temperature warning icon appears on the display when the liquid temperature exceeds 50°C, alerting users to prevent accidental burns. These features collectively enhance the safety, usability, and maintenance of the ADT835 calibration bath.