Specifications
Differential Pressure |
P/N | Pressure Range | Media | Accuracy (%FS)[1] | Burst Pressure | Static Pressure Range |
(inH2O) | (mbar) |
DP1 | ±1 | ±2.5 | G | 0.05[2] | 100× | ±10 psi |
DP2 | ±2 | ±5.0 | G | 0.05[2] | 100× | ±10 psi |
DP5 | ±5 | ±10 | G | 0.05[2] | 50× | ±10 psi |
DP10 | ±10 | ±25 | G | 0.05[2] | 20× | ±10 psi |
DP20 | ±20 | ±50 | G | 0.05 | 20× | ±10 psi |
DP30 | ±30 | ±75 | G | 0.05 | 20× | ±10 psi |
DP50 | ±50 | ±160 | G | 0.05 | 3× | ±10 psi |
DP150 | ±150 | ±350 | G | 0.02 (0.05) | 3× | 50 psi |
DP300 | ±300 | ±700 | G | 0.02 (0.05) | 3× | 50 psi |
[1] FS specification applies to the span of the range. Accuracy includes one year stability.
[2] 0.05%FS accuracy (incl 6 months stability). One year accuracy is 0.05%FS calibration accuracy combined with 0.05%FS one year stability.
General Specifications
Model | ADT681 | ADT681IS |
Description | Digital Pressure Gauge | Intrinsically Safe Digital Pressure Gauge |
Intrinsic Safety & European Compliance | CE marked | CE marked |
IECEx |
EX ia IIC T4 Ga |
TUR 16.0023X |
Accuracy (For detailed accuracy, please see pressure range table) | 681(IS)-02 : 0.02% of full scale |
681(IS)-05 : 0.05% of full scale |
681(IS)-10 : 0.1% of full scale |
681(IS)-20 : 0.2% of full scale |
681(IS)-RD: 0% to 20% of Range: 0.02% of full scale 20% to 110% of Range: 0.1% of reading Vacuum: 0.25% of full scale [1][2] |
Gauge Types | Gauge pressure, compound pressure, absolute pressure, differential pressure, 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: -10°C to 50°C |
Operating Temperature: -10°C to 50°C |
Storage Temperature: -20°C to 70°C |
Humidity: <95% |
Pressure Port | ≤100 MPa: 1/4NPT male, 1/2NPT male, 1/4BSP male, 1/2BSP male, M20×1.5 male |
>100 MPa: 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: 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: 60 minutes power auto-off. Auto-off may be disable |
External power: 110/220V external power adapter (optional) |
Enclosure | Case material: Aluminium 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