- Enquiries T. 08 9302 1266
The Additel ADT681 digital pressure gauges, provide an accurate, reliable and economical solution for a wide range of pressure applications. With accuracy choices of 0.2, 0.1, 0.05 and 0.02 % of full scale or 0.1% reading and pressure ranges from Vacuum to 420 MPa, there are options to meet all budgets and service needs.
The ADT681 has options for measuring gauge, compound, differential, absolute and barometric pressure.
Variants include IP67 IECEx intrinsically safe (ADT681IS), data logging and panel mount ensuring you can select a gauge to meet your requirements.
General Specifications
| Model |
ADT681 |
ADT681IS |
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Description |
Digital Pressure Gauge |
Intrinsically Safe Digital Pressure Gauge |
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Intrinsic Safety |
CE marked |
CE marked |
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IECEx |
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EX ia IIC T4 Ga |
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TUR 16.0023X |
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Accuracy |
681(IS)-02 : 0.02% of full scale |
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681(IS)-05 : 0.05% of full scale |
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681(IS)-10 : 0.1% of full scale |
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681(IS)-20 : 0.2% of full scale |
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681(IS)-RD: 0% to 20% of Range: 0.02% of full scale 20% to 110% of Range: 0.1% of reading |
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Gauge Types |
Gauge pressure, compound pressure, absolute pressure, differential pressure, barometric pressure |
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Fan-shaped Graph Scale |
Similar to analog dials, including pressure swing, % indication with fan-shaped graph scale for visual reference, low/high alarm. |
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Display |
Description: 5 full digit FSTN LCD |
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Display rate: 3 readings per second (Default setting). |
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Numeral display height: 16.5mm (0.65″) |
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Pressure Units |
Pa, kPa, MPa, psi, bar, mbar, kgf/cm2, inH2O@4°C mmH2O@4°C, inHg@0°C, mmHg@0°C |
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Environmental |
Compensated Temperature: -10°C to 50°C |
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Operating Temperature: -10°C to 50°C |
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Storage Temperature: -20°C to 70°C |
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Humidity: <95% |
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Pressure Port |
≤100 MPa: 1/4NPT male, 1/2NPT male, 1/4BSP male, 1/2BSP male, M20×1.5 male |
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>100 MPa: 1/4HP female or 1/4HP male |
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Differential Pressure: Ø6 mm test hose |
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Other connections available per request |
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Power |
Battery: One 9V alkaline battery (included) |
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Battery life: |
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Power auto-off: 60 minutes power auto-off. Auto-off may be disable |
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External power: 110/220V external power adapter (optional) |
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Enclosure |
Case material: Aluminium alloy |
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Wetted parts: 316L SS |
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Dimension: Ø110mm X 35mm depth X 176mm height (panel mount gauge: Ø140mm X 86mm depth) |
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Weight: 0.6kg |
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Compliance |
Protection Level: IP67(available for 681IS GP15-60K) |
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Vibration: 5g (20-2000 Hz) |
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Shock Resistance: 100g/11ms |
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Data Logging |
Data storage: 21,843 records (each record includes date, time, pressure and temperature) |
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Rate: user-selectable from 1 to 99,999 second intervals |
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Communication |
RS232 *(Do not use the RS-232 connector in a hazardous atmosphere) |
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Warranty |
1 year |
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[1] FS = -14.5 psi
[2] Applicable ADT681-RD-CPX
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Gauge Pressure [1] |
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P/N |
Pressure Range |
Media [2] |
Accuracy |
Burst |
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psi |
bar |
% FS |
% RD |
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V15 |
-15 |
-1 |
G |
0.02 (0.05, 0.1, 0.2) |
N/A |
3× |
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GP2 |
2 |
0.16 |
G |
0.05 (0.1, 0.2) |
N/A |
3× |
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GP5 |
5 |
0.35 |
G |
0.05 (0.1, 0.2) |
0.1 |
3× |
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GP10 |
10 |
0.7 |
G |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP15 |
15 |
1 |
G, L[3] |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP30 |
30 |
2 |
G, L[3] |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP50 |
50 |
3.5 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP100 |
100 |
7 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP150 |
150 |
10 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP300 |
300 |
20 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP500 |
500 |
35 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP600 |
600 |
40 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP1K |
1,000 |
70 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP2K |
2,000 |
140 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP3K |
3,000 |
200 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP5K |
5,000 |
350 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP10K |
10,000 |
700 |
G, L |
0.02 (0.05, 0.1, 0.2) |
0.1 |
3× |
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GP15K |
15,000 |
1,000 |
G, L |
0.05 (0.1,0.2) |
0.1 |
2× |
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GP20K |
20,000 |
1,400 |
G, L |
0.05 (0.1,0.2) |
N/A |
1.5× |
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GP25K |
25,000 |
1,600 |
G, L |
0.1 (0.2) |
N/A |
1.5× |
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GP30K |
30,000 |
2,000 |
G, L |
0.1 (0.2) |
N/A |
1.5× |
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GP36K |
36,000 |
2,500 |
G, L |
0.1 (0.2) |
N/A |
1.5× |
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GP40K |
40,000 |
2,800 |
G, L |
0.1 (0.2) |
N/A |
1.35× |
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GP50K |
50,000 |
3,500 |
G, L |
0.1 (0.2) |
N/A |
1.2× |
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GP60K |
60,000 |
4,200 |
G, L |
0.1 (0.2) |
N/A |
1.1× |
[1] Sealed gauge pressure for above 1,000 psi
[2] G=Gas, L=Liquid
[3] 0.02% FS for gas media only
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Barometric Pressure |
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P/N |
Pressure Range |
Media |
Accuracy |
Burst |
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Low |
High |
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BP |
60 kPa |
110 kPa |
G |
40 Pa |
3× |
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Absolute Pressure |
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P/N |
Pressure Range |
Media[1] |
Accuracy(%FS) |
Burst |
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psi |
bar |
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AP5 |
5 |
0.35 |
G |
0.1 (0.2) |
3× |
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AP10 |
10 |
0.7 |
G |
0.1 (0.2) |
3× |
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AP15 |
15 |
1 |
G |
0.1 (0.2) |
3× |
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AP30 |
30 |
2 |
G |
0.1 (0.2) |
3× |
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AP50 |
50 |
3.5 |
G |
0.1 (0.2) |
3× |
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AP100 |
100 |
7 |
G, L |
0.05 (0.1, 0.2) |
3× |
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AP300 |
300 |
20 |
G, L |
0.05 (0.1, 0.2) |
3× |
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AP500 |
500 |
35 |
G, L |
0.05 (0.1, 0.2) |
3× |
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AP1K |
1,000 |
70 |
G, L |
0.05 (0.1, 0.2) |
3× |
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AP3K |
3,000 |
200 |
G, L |
0.05 (0.1, 0.2) |
3× |
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AP5K |
5,000 |
350 |
G, L |
0.05 (0.1, 0.2) |
3× |
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[1] G=Gas, L=Liquid
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Differential Pressure |
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P/N |
Pressure Range |
Media |
Accuracy |
Burst |
Static |
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(inH2O) |
(mbar) |
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DP1 |
±1 |
±2.5 |
G |
0.05[2] |
100× |
±10 psi |
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DP2 |
±2 |
±5.0 |
G |
0.05[2] |
100× |
±10 psi |
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DP5 |
±5 |
±10 |
G |
0.05[2] |
50× |
±10 psi |
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DP10 |
±10 |
±25 |
G |
0.05[2] |
20× |
±10 psi |
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DP20 |
±20 |
±50 |
G |
0.05 |
20× |
±10 psi |
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DP30 |
±30 |
±75 |
G |
0.05 |
20× |
±10 psi |
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DP50 |
±50 |
±160 |
G |
0.05 |
3× |
±10 psi |
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DP150 |
±150 |
±350 |
G |
0.02 (0.05) |
3× |
50 psi |
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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.
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Compound Pressure |
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P/N |
Pressure Range |
Media[1] |
Accuracy |
Burst |
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psi |
bar |
%FS[2] |
%RD |
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CP2 |
±2 |
±0.16 |
G |
0.05 (0.1,0.2) |
N/A |
3× |
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CP5 |
±5 |
±0.35 |
G |
0.02 (0.05,0.1,0.2) |
0.1 |
3× |
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CP10 |
±10 |
±0.7 |
G |
0.02 (0.05,0.1,0.2) |
0.1 |
3× |
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CP15 |
±15 |
±1 |
G |
0.02 (0.05,0.1,0.2) |
0.1 |
3× |
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CP30 |
-15 to 30 |
-1 to 2 |
G |
0.02 (0.05,0.1,0.2) |
0.1 |
3× |
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CP100 |
﹣15 to 100 |
﹣1 to 7 |
G, L |
0.02 (0.05,0.1,0.2) |
0.1 |
3× |
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CP300 |
﹣15 to 300 |
﹣1 to 20 |
G, L |
0.02 (0.05,0.1,0.2) |
0.1 |
3× |
[1] G=Gas, L=Liquid
[2] FS specification applies to the span of the range