Additel ADT681-05-DP30-H2O

$1.390

In stock

Precision digital pressure gauge with ±30 inch H2O differential range, 0.05% full-scale accuracy, and IP67-rated durability — ideal for high-resolution low-pressure differential measurement and calibration tasks.

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Additel ADT681-05-DP30-H2O – High-Accuracy Digital Pressure Test Gauge (30 inH2O Differential, 0.05%FS).

The Additel ADT681-05-DP30-H2O Digital Pressure Test Gauge delivers exceptional accuracy and stability for low differential pressure measurements up to ±30 inches of H₂O. With a full-scale accuracy of 0.05%, robust IP67 protection, and a user-friendly interface, this device is built to meet the rigorous demands of industrial pressure calibration, especially in applications involving process instrumentation and low-pressure systems.

Its large, 5-digit high-resolution display provides clear pressure readings in up to eleven selectable units. For added safety, the display flashes a warning when the pressure exceeds 120% of the full-scale range — enhancing both usability and equipment protection.

Whether used in the lab or field, the ADT681-05-DP30-H2O offers reliable performance in line with the most demanding calibration standards.


Key Features:

  • High Accuracy: 0.05% FS precision for ±30 inH₂O differential pressure (Grade 5A)

  • Temperature Compensated: Full temperature compensation ensures accuracy across environmental conditions

  • Multi-Unit Support: Displays pressure in up to 11 units including psi, bar, mbar, inH₂O

  • Visual Feedback: Graphical pressure bar and flashing over-range warning

  • Durable Construction: IP67-rated enclosure with stainless steel wetted parts and rugged aluminum case

  • Flexible Mounting: Available in both bottom and panel mount options

  • Interface Support: RS-232 communication port for integration with other systems

  • Power Options: Operates via 9V battery or AC power

  • Traceable Accuracy: Comes with NIST-traceable calibration certificate


Why Choose the Additel ADT681-05-DP30-H2O?

  • Ideal for low-pressure differential measurement in industries like HVAC, cleanroom testing, and laboratory calibration

  • Ruggedized for harsh environments, fully sealed against dust and moisture

  • Backed by CSA safety certification and 1-year warranty

  • Fully compatible with modern pressure calibration procedures, including those using loop calibrators

  • Trusted for high-accuracy tasks where even minor pressure differentials can impact performance

To understand the importance of accuracy, resolution, and proper calibration tools, check out our guide on how to calibrate a pressure transmitter using a loop calibrator.


What’s Included:

  • Additel ADT681-05-DP30-H2O Pressure Gauge

  • Protective Rubber Boot (except panel mount versions)

  • 9V Alkaline Battery

  • NIST Traceable Calibration Certificate

  • User Manual


Technical Specifications:

Specification Detail
Type Differential Pressure
Style Digital Indicating Gauge
Accuracy 0.05% F.S. (Grade 5A)
Range ±30 inH₂O (1.08 psi)
Display 5-digit LCD
Pressure Units bar, inH₂O, mbar, psi (11 selectable total)
Case Size 4″ (102 mm)
Case Material Aluminum
Wetted Material Stainless Steel (SS)
Ingress Protection IP67
Power 9V Battery or AC
Interface RS-232
Certifications CSA
Weight 1.32 lbs (0.6 kg)

Applications:

  • Cleanroom and HVAC system validation

  • Laboratory and industrial pressure calibration

  • Process transmitter testing and setup

  • Filter and airflow system differential pressure monitoring


Similar Products You May Consider:

  • Additel ADT680A-DP15 Digital Differential Pressure Gauge – for ±15 inH₂O range

  • Fluke 700G31 Digital Pressure Gauge – rugged option with broader range and ±0.05% accuracy


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Additel ADT681-05-DP30-H2O

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