Product Overview: Additel ADT 681 – DP1 1 inH2O 0.4% Accuracy Series Digital Pressure Gauge
Additel ADT 681 DP1 1 inH2O
With advanced microprocessor technology and state-of-the-art silicon pressure sensors, ADT681 series digital pressure gauges provide an accurate, reliable, and economic solution for a wide range of pressure applications. They are loaded with functionality and remarkably easy to use.
To reach the best performance, every silicon pressure sensor in our gauges is specially aged, tested and screened before assembly. ADT681 series digital pressure gauges are unmatched in performance and reliability. Best of all, they are very affordable.
Features
• Pressure ranges to 36,000 psi (2500 bar)
• 0.4% full scale accuracy (ADT 681-40)
• Fully temperature compensated accuracy from14°F to 122°F (-10°C to 50°C)
• Up to eleven selectable pressure units
• Large, easy to read display with 5-digit resolution
• Back lighted display
• % pressure indication with fan-shaped graph scale for visual reference
• Display flash warning when pressure over 120% of FS
• Bottom mount or panel mount
• ATEX certified intrinsically safe (Model ADT 681IS)
• NIST traceable calibration with data(included)
• 9V battery power or AC adapter (optional)
Applications
• Precision pressure measurement
• Field gauge calibration
• Pressure safety valve (PSV) testing
• Pressure regulator testing
Specifications
• Model
ADT 681: Regular gauge
ADT 681IS: ATEX certified intrinsically safe
• Accuracy
ADT 681(IS)-02: 0.025% of full scale
ADT 681(IS)-05: 0.05% of full scale
ADT 681(IS)-10: 0.1% of full scale
ADT 681(IS)-20: 0.2% of full scale
(For detail accuracy, please see pressure range table)
• Gauge Types
Gauge pressure
Compound pressure
Absolute pressure
Differential pressure
• Fan-shaped Graph Scale
Similar to analog dials, including pressure swing, % indication with fan-shaped graph scale for visual reference, low/high alarm.
• Display
Description: 5 full digit FSTN LCD
Display rate: 3 readings per second (Default setting).
Adjustable from 10 readings per second to 1 reading every ten seconds
Numeral display height: 16.5mm(0.65”)
• Pressure Units
Pa, kPa, MPa, psi, bar, mbar, kgf/cm2, inH2O@4℃, mmH2O@4℃, inHg@0℃, mmHg@0℃
• Environmental
Compensated Temperature: 14°F to 122°F (-10°C to 50°C)
Operating Temperature*: 14°F to 122°F (-10°C to 50°C)
*0.025%FS accuracy guaranteed only over the ambient temperature range of 68°F to 79°F (20°C to 26°C)
Storage Temperature: -4°F to 158°F (-20°C to 70°C)
Humidity: <95%
• Media Compatibility
0 – 30 psi: Clean dry non-corrosive gases
50 – 36,000 psi: media compatible with 316L SS
• Pressure Port
1/4” NPT male, 1/4” BSP male, M20×1.5 male (≤15,000 PSI)
1/4” HP female or 1/4” HP male(＞15,000 PSI)
1/4’HP female: Autoclave F-250-C, 9/16′ – 18 UNF-2B
1/4’HP male: Autoclave M-250-C, 9/16′ – 18 UNF-2A
0.156 inch (Ø4 mm) test hose (for differential pressure)
Other connections available per request
• Power
Battery: One 9V alkaline battery (included)
Battery life: 300 hours (10 readings/s), 600 hours (3 reading/s), or 6000 hours (1 reading/10s)
Power auto-off: 60 minutes power auto-off. Auto-off may be disable
External power: 110/220V external power adapter (optional)
(Do not use the external power adapter in a hazardous atmosphere)
• Enclosure
Case material: Aluminum alloy
Wetted parts: 316L SS
Dimension: Φ110mm X 35mm depth X 176mm height
(panel mount gauge: Φ140mm X 86mm depth)
Weight: 0.6kg
• Intrinsic Safety and European Compliance
CE marked
ATEX certified intrinsically safe (ADT 681IS)
• Communication
RS232 (Do not use the RS-232 connector in a hazardous atmosphere)
• Warranty
1 year
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