Additel ADT295 Field Device Communicator

• HART support
• No external power or resistors required
• Free wireless DD library updates, no subscription required
• 0.01% RD + 1.5 µA current measurement accuracy
• Latest FDI technology for broad device compatibility
• Integrated high-precision loop diagnostics
• Field-tested for speed and ease of use
• 20 hour battery life, continuous use
• 5-inch color touchscreen and physical buttons, glove compatible
• ISO 17025-accredited calibration with data included

Overview

The ADT295 Field Device Communicator is an all-in-one solution for configuring, calibrating, diagnosing, and managing HART®, FOUNDATION™ Fieldbus, and Profibus PA instruments. It supports transmitters, positioners, and other field devices used across the oil and gas, chemical, power, and process industries.

Online and offline operating modes let the ADT295 communicate with installed field devices during operation, and support calibration, testing, and troubleshooting in metrology laboratories, instrument shops, and maintenance facilities. Integrated loop power and loop diagnostics eliminate the need for external power supplies, resistors, and other accessories.

Features

Field-tested speed and usability

In early trials, testers described device communication and menu navigation as noticeably faster than other handheld communicators. The interface is organized around technician workflows rather than protocol architecture, so common tasks take fewer steps. Testers pointed to routine calibration checks as the area with the most time savings.

Free DD library updates

Additel charges no fee or subscription for DD library or firmware updates, and no support contract is required. Pre-installed libraries support over 2,600 HART, FOUNDATION Fieldbus, and Profibus PA devices. Built-in Wi-Fi and Bluetooth allow a one-click library or firmware update directly on the unit, with no computer or IT involvement.

Process signal and pressure calibration

The ADT295 supports autoranging voltage measurement, current measurement, current output, and an integrated 24 V loop power supply for testing and calibrating AI and AO cards. Voltage and current readings are accurate to 0.01% RD. The loop supply outputs 24 V at up to 30 mA, enough to power a transmitter during testing. Every unit ships with a traceable ISO/IEC 17025-accredited calibration.

With an external Additel digital pressure module, the unit can also calibrate pressure transmitters.

Touchscreen interface

The 5-inch color touchscreen and physical keypad both work with gloves. Adjustable backlighting and selectable light and dark themes keep the screen readable in direct sunlight.

Integrated pressure calibration and device communication

The ADT295 communicates with the device under test while simultaneously acquiring reference pressure data from a connected Additel digital pressure module, allowing on-site comparative calibration without interrupting communication. It supports one external ADT161 Digital Pressure Module (optional accessory).

• Ranges: vacuum up to 60,000 psi (4,200 bar); differential ranges as low as ±1 inH₂O
• Accuracy: 0.1% FS on the highest ranges to 0.01% FS on gauge and compound modules through 15,000 psi
• Precision sensors: 0.01% of reading or 0.005% FS, whichever is greater
• Every module ships with an ISO 17025 accredited calibration certificate

Rugged design

• Weight 1.8 lb (0.8 kg); size 7.6 × 3.8 × 2.2 in (192.3 × 96.5 × 55.3 mm)
• Protected electrical test ports guard against accidental 220 V contact
• Tempered glass display; sunlight-readable touchscreen
• IP54 enclosure; 1-meter drop test; 5 g vibration; 8 g mechanical shock; 48-hour salt spray
• Operating range -20°C to 50°C
• 1-year warranty

Document management and file sharing

64 GB of onboard storage holds manuals, wiring diagrams, work instructions, calibration records, and other reference material. An integrated file manager organizes documents, videos, and images, and Bluetooth transfer shares files between devices without a network connection.

Device configuration and management

Standard capabilities: DD menu navigation, parameter configuration, test methods, data trending, help resources, library browsing, customizable hotkeys, favorites management, configuration storage, and offline simulation. Additional features: full-screen help, complete parameter backup and restoration, frequently used DD favorites, device connection history, and integrated calibration signal generation.

Free product and application support

Product and application support is included with every ADT295 at no charge, with no support contract or subscription required.

General specification

Technical specification

Ambient temperature: 20 °C ±10 °C, 1-year accuracy guarantee

Notes

• Temperature coefficient: ±5 ppm FS/°C when ambient temperature is -20 °C to 8 °C or 38 °C to 50 °C. Guaranteed specification range: 8 °C to 38 °C.
• Voltage input range: -1 V to 30 V; input impedance > 20 MΩ.
• Current input and output impedance < 10 Ω, suitable for measuring transmitter TEST terminal current.
• Loop power: max open-circuit voltage 24 V; driving capacity for 1 kΩ / 20 mA; powers transmitters.

Model selection

All models ship with the full standard accessory kit, including the ISO 17025-accredited calibration certificate.

Each Unit Includes