Description |
Intrinsically Safe Digital Pressure Gauge |
Intrinsic Safety & European Compliance |
CE marked
ATEX certified intrinsically safe
II 1G EX ia IIC T4 Ga
TUR 16.0023X |
Accuracy |
681(IS)-RD: 0% to 20% of Range: 0.02% of full span 20% to 110% of Range: 0.1% of reading Vacuum: 0.25% of full span[1][2] |
Gauge Types |
Gauge pressure, compound pressure, absolute pressure, differential pressure and barometric 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°C mmH2O@4°C, inHg@0°C, mmHg@0°C |
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)
Storage Temperature: -4°F to 158°F (-20°C to 70°C)
Humidity: <95% |
Pressure Port |
≤15,000 psi: 1/4NPT male, 1/2NPT male, 1/4BSP male, 1/2BSP male, M20×1.5 male
>15,000 psi: 1/4HP female or 1/4HP male
*1/4HP female: Autoclave F-250-C, 9/16" - 18 UNF-2B
*1/4HP male: Autoclave M-250-C, 9/16" - 18 UNF-2A
Differential Pressure: 0.236 inch (Ø6 mm) test hose
Other connections available per request |
Power |
Battery: One 9V alkaline battery (included)
Battery life:
1. High power mode: 320 hours
2. Low power mode: 300 hours (10 readings/s), 600 hours (3 reading/s), or 4000 hours (1 reading/10s)
Power auto-off: 120, 90, 60, 45, 30, 15, 10, 5 and 1 minute auto-off options.
External power: 110/220V external power adapter (optional) |
Enclosure |
Case material: Aluminum alloy
Wetted parts: 316L SS
Dimension: Ø110mm X 35mm depth X 176mm height (panel mount gauge: Ø140mm X 86mm depth)
Weight: 0.6kg |
Compliance |
Protection Level: IP67(available for 681IS GP15-60K)
Vibration: 5g (20-2000 Hz)
Shock Resistance: 100g/11ms |
Data Logging (Available on with data logging option ADT681-...-DL) |
Data storage: 21,843 records (each record includes date, time, pressure and temperature)
Rate: user-selectable from 1 to 99,999 second intervals |
Communication |
RS232 *(Do not use the RS-232 connector in a hazardous atmosphere) |
Warranty |
1 year |
[1] FS = -14.5 psi
[2] Applicable ADT681-RD-CPX |