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ADT681A Digital Pressure Gauge

Standard (with optional datalogging)

Intrinsically Safe (with optional datalogging)

ADT681A Digital Pressure Gauges Overview

The Additel ADT681A Digital Pressure Gauge is a high-performance instrument designed for pressure measurement, calibration and verification across a wide range of industrial and laboratory applications. Built with durability and accuracy in mind, the ADT681A series offers pressure ranges up to 60,000 psi (4,200 bar) with accuracy options as tight as 0.01% of full scale.

With features including datalogging, Bluetooth communication and a fully temperature compensated design, the ADT681A provides a modern and reliable solution for technicians requiring precise and repeatable measurements.

Key Features

  • Pressure ranges to 60,000 psi (4,200 bar)
  • 0.01, 0.02%, 0.05% FS or 0.1% RD accuracy
  • Measures gauge or absolute pressure
  • % pressure indication with fan-shaped graphic
  • Fully temperature compensated accuracy (-10~50°C)
  • Bluetooth communication
  • Communication with Additel’s Link Mobile App
  • Large easy-to-read display
  • Intrinsically safe version (681AEx)
  • Data logging (up to 10,000,000 records)
  • IP67 rated

Understanding the ADT681A Model Variations

The ADT681A series is available in multiple configurations to suit different applications:

Standard Models
Designed for general pressure measurement, available in gauge, compound, differential and barometric pressure configurations.

Datalogging (DL) Models
Includes onboard memory for recording pressure over time, ideal for analysis and reporting.

Intrinsically Safe (Ex) Models
Certified for use in hazardous environments, including IECEx rated applications.

Intrinsically Safe (Ex) with Datalogging (DL)
Combines hazardous area certification with full data recording capabilities.

Pressure Range & Application Flexibility

The ADT681A series supports a wide range of pressure types including:

  • Gauge pressure

  • Absolute pressure

  • Differential pressure

  • Compound pressure

  • Barometric pressure

With configurable ranges from vacuum through to 60,000 psi, these gauges are suitable for everything from low-pressure calibration to high-pressure industrial testing.

Why Choose the ADT681A?

The ADT681A improves on previous models with enhanced durability, increased data storage, and expanded communication options. Its stainless steel construction, IP67 rating and long battery life make it ideal for both field and laboratory environments.

Calibration of your Digital Pressure Gauge

Calibration is essential for maintaining the accuracy and reliability of your digital pressure gauges. At Zedflo, we offer a complete calibration service through our in-house ISO17025 NATA accredited calibration laboratory, making us your one-stop shop for all ongoing calibration needs.

Our calibration process ensures your instruments perform to the highest standards by comparing and, where necessary, adjusting the gauge to align with known reference values. This guarantees consistent, traceable readings and long-term confidence in your pressure measurement equipment.

Applications of Digital Pressure Gauges

Digital pressure gauges are highly versatile instruments used across a wide range of industries where precision and reliability are essential. Common applications include:

Manufacturing: Monitoring and controlling pneumatic and hydraulic systems to ensure consistent process performance.

Automotive: Testing and servicing vehicle systems that rely on accurate pressure measurement for safety and efficiency.

Environmental Monitoring: Tracking atmospheric, gas, or water pressure to support environmental assessments and research.

Mining, Process, and Power Industries: Testing, calibrating, and data logging of pressure systems in demanding industrial environments.

Calibration: Serving as high-accuracy reference equipment for verifying and maintaining the performance of other pressure measurement devices.