Additel ADT681-05-DP30-H2O
$1.390
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.
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:
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High Accuracy: 0.05% FS precision for ±30 inH₂O differential pressure (Grade 5A)
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Temperature Compensated: Full temperature compensation ensures accuracy across environmental conditions
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Multi-Unit Support: Displays pressure in up to 11 units including psi, bar, mbar, inH₂O
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Visual Feedback: Graphical pressure bar and flashing over-range warning
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Durable Construction: IP67-rated enclosure with stainless steel wetted parts and rugged aluminum case
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Flexible Mounting: Available in both bottom and panel mount options
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Interface Support: RS-232 communication port for integration with other systems
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Power Options: Operates via 9V battery or AC power
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Traceable Accuracy: Comes with NIST-traceable calibration certificate
Why Choose the Additel ADT681-05-DP30-H2O?
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Ideal for low-pressure differential measurement in industries like HVAC, cleanroom testing, and laboratory calibration
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Ruggedized for harsh environments, fully sealed against dust and moisture
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Backed by CSA safety certification and 1-year warranty
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Fully compatible with modern pressure calibration procedures, including those using loop calibrators
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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:
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Additel ADT681-05-DP30-H2O Pressure Gauge
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Protective Rubber Boot (except panel mount versions)
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9V Alkaline Battery
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NIST Traceable Calibration Certificate
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User Manual
Technical Specifications:
Specification | Detail |
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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:
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Cleanroom and HVAC system validation
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Laboratory and industrial pressure calibration
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Process transmitter testing and setup
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Filter and airflow system differential pressure monitoring
Similar Products You May Consider:
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Additel ADT680A-DP15 Digital Differential Pressure Gauge – for ±15 inH₂O range
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Fluke 700G31 Digital Pressure Gauge – rugged option with broader range and ±0.05% accuracy
Explore More:
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Visit our full category: Digital Pressure Gauges
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Learn more about Pressure Measurement tools and techniques
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Read our expert article: How to Calibrate a Pressure Transmitter Using a Loop Calibrator