ADT 685

Additel ADT 685 pressure calibrator
  • Additel ADT 685 pressure calibrator
Pressure gauges

ADT 685


Digital pressure gauge

  • Fully temperature compensated accuracy
  • Each model measures relative or absolute pressure
  • Built-in barometer
  • 685Ex intrinsically safe version (optional)

Technical specifications

0.02%, 0.05%FS or 0.1%RD
4.65" (118mm) width X 1.77" (42mm) depth X 7.01" (178mm) height - 1.50 lbs. (0.68 kg)
Three AA alkaline batteries (included)
Vibrations & Shocks
Vibration: 5 g (10-500 Hz); Shock: 8 g/11 ms
Display rate: 3 readings per second (default setting)
USB Type-C and Bluetooth included RS-232 or RS-485 [4] (optional)
Data Logging
Data storage: 10,000,000 records; Rate: user selectable from 0.1 to 9999.9 second intervals
Power auto-off: user selectable; External power: 110/220 V adapter (5 VDC) (optional, excl ADT685Ex)
Environment Specifications
Humidity: 0 - 95%, Non-condensing
1 year
CE marked, ATEX certified intrinsically safe, II 1G EX ia IIC T4 Ga


Looking for the most advanced, best performing and modern digital pressure gauge on the market? Congratulations, you’ve just found it! Additel’s ADT685 digital pressure gauges are in a class of their own with an amazingly easy to use and read touchscreen display. The all new modern menu structure and control interface bring a new and refreshing experience to gauge work.

This completely new way of interfacing with our gauges makes the ADT685 gauges a real pleasure to use. With microprocessor technology, state-of-the-art silicon pressure sensors and plenty of onboard storage capacity, these attractive and fully temperature compensated gauges will provide the performance, durability and reliability you’ve come to expect from genuine Additel products.

To provide support for intrinsically safe needs, the ADT685Ex comes ready to provide pressure measurements and recordings in the most demanding of environments. Each Additel 685 is also IP67 rated to protect your investment in dusty and/or wet environments.