ADT 681 Digital Test Gauge (Now with IECEX)

The ADT 681 digital pressure gauges, now with IECEX hazardous approval, provide an accurate, reliable and economical solution for a wide range of pressure applications. A selection of accuracy specifications up to 0.02% of full scale are available to suit your budget and requirements.
The ADT 681 digital pressure gauges, now with IECEX hazardous approval, provide an accurate, reliable and economical solution for a wide range of pressure applications. A selection of accuracy specifications up to 0.02% of full scale are available to suit your budget and requirements.
More Information
Features
  • Measure and source 13 T/Cs, 11 RTDs, mV, mA, Ohms, frequency and pulses
  • Accuracy to 0.01% of reading
  • Pressure via
  • external pressure modules
  • up to 70,000kPa
  • 24V loop power
  • Task management capability, upload, download and document
  • Easy to use smartphone type menu and interface
  • Rugged design for use in harsh environments
Specifications
  • Choice of accuracy levels 0.2%, 0.1%, 0.05% & 0.02% FS
  • Pressure ranges up to 250,000 kPa
  • Suitable for gauge pressure, compound pressure & absolute pressure
  • Selectable engineering units
  • Large back-lit easy to read display
  • % pressure indication with fan shaped graph scale for visual reference
  • Display flash warning when pressure over 120% of FS
  • IECEX certified model available

• Model
ADT681: Regular gauge
ADT681IS: ATEX certified intrinsically safe

• Accuracy
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: 10 to 20% of range: 0.02% of full scale
20% to 110% of range: 0.1% of reading
Vacuum: 0.25% of full scale.
(For detailed 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°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
1/4NPT male, 1/4BSP male, M20×1.5 male (≤15,000 PSI)
1/4HP female or 1/4HP male(≥15,000 PSI)
*1/4HP female: Autoclave F-250-C, 9/16″ – 18 UNF-2B
*1/4HP male: Autoclave M-250-C, 9/16″ – 18 UNF-2A
0.236 inch (Ø6 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
Dimensions: 110mm X 35mm X 176mm
(panel mount gauge: 140mm X 86mm depth)
Weight: 0.6kg

Data Logging
Data storage: 21,843 records (each record includes date, time, pressure and temperature)
Rate: user-selectable from 1 to 99,999 second intervals

• Intrinsic Safety and European Compliance
CE marked
ATEX certified intrinsically safe (ADT681IS)
*(Rubber boot for ADT681 is not ATEX certified)

• Communication:
RS232
*(Do not use the RS-232 connector in a hazardous atmosphere)

• Warranty: 1 year

• Pressure Range

Gauge Pressure [1]

P/N

Pressure Range

Media [2]

Accuracy(%FS)

Burst
Pressure

(psi)

(bar)

V15

-15

-1.0

G

0.025 (0.05, 0.1, 0.2)

GP2

2

0.16

G

0.05 (0.1, 0.2)

GP5

5

0.35

G

0.05 (0.1, 0.2)

GP10

10

0.7

G

0.05 (0.1, 0.2)

GP15

15

1.0

G, L[3]

0.025 (0.05, 0.1, 0.2)

GP30

30

2.0

G, L[3]

0.025 (0.05, 0.1, 0.2)

GP50

50

3.5

G, L

0.025 (0.05, 0.1, 0.2)

GP100

100

7.0

G, L

0.025 (0.05, 0.1, 0.2)

GP300

300

20

G, L

0.025 (0.05, 0.1, 0.2)

GP500

500

35

G, L

0.025 (0.05, 0.1, 0.2)

GP600

600

40

G, L

0.025 (0.05, 0.1, 0.2)

GP1K

1,000

70

G, L

0.025 (0.05, 0.1, 0.2)

GP2K

2,000

140

G, L

0.025 (0.05, 0.1, 0.2)

GP3K

3,000

200

G, L

0.025 (0.05, 0.1, 0.2)

GP5K

5,000

350

G, L

0.025 (0.05, 0.1, 0.2)

GP10K

10,000

700

G, L

0.025 (0.05, 0.1, 0.2)

GP15K

15,000

1,000

G, L

0.05 (0.1,0.2)

GP20K

20,000

1,400

G, L

0.05 (0.1,0.2)

1.5×

GP25K

25,000

1,600

G, L

0.1 (0.2)

1.5×

GP30K

30,000

2,000

G, L

0.1 (0.2)

1.5×

GP36K

36,000

2,500

G, L

0.1 (0.2)

1.5×

GP40K

40,000

2,800

G, L

0.1 (0.2)

1.1×

 

Compound Pressure

P/N

Pressure Range

Media

Accuracy(%FS)

Burst
Pressure

(psi)

(bar)

CP2

±2

±0.16

G

0.05(0.1,0.2)

CP5

±5

±0.35

G

0.05(0.1,0.2)

CP10

±10

±0.7

G

0.05(0.1,0.2)

CP15

±15

±1

G

0.025(0.05,0.1,0.2)

CP30

-15 to 30

-1 to 2

G

0.025(0.05,0.1,0.2)

CP100

﹣15 to 100

﹣1 to 7

G, L

0.025(0.05,0.1,0.2)

CP300

﹣15 to 300

﹣1 to 20

G, L

0.025(0.05,0.1,0.2)

 

Absolute Pressure

P/N

Pressure Range

Media

Accuracy(%FS)

Burst
Pressure

(psi)

(bar)

AP5

5

0.35

G

0.1 (0.2)

AP10

10

0.7

G

0.1 (0.2)

AP15

15

1.0

G

0.1 (0.2)

AP30

30

2.0

G

0.1 (0.2)

AP50

50

3.5

G

0.1 (0.2)

AP100

100

7.0

G, L

0.05 (0.1,0.2)

AP300

300

20

G, L

0.05 (0.1,0.2)

AP500

500

35

G, L

0.05 (0.1,0.2)

AP1K

1,000

70

G, L

0.05 (0.1,0.2)

AP3K

3,000

200

G, L

0.05 (0.1,0.2)

AP5K

5,000

350

G, L

0.05 (0.1,0.2)

 

Differential Pressure
P/NPressure RangeMediaAccuracy
(%FS)
Burst
Pressure
Static
Pressure
Range
(inH2O)(mbar)
DP1±1±2.5G0.05100×±10 psi
DP2±2±5.0G0.05100×±10 psi
DP5±5±10G0.0550×±10 psi
DP10±10±25G0.0520×±10 psi
DP20±20±50G0.025 (0.05)20×±10 psi
DP30±30±75G0.025 (0.05)15×±10 psi
DP50±50±160G0.025 (0.05)±10 psi
DP150±150±350G0.025 (0.05)50 psi
DP300±300±700G0.025 (0.05)50 psi

*Note: [1]. Sealed gauge pressure for above 1000 psi
[2]. G=Gas, L=Liquid (please specify media type when place order)
[3]. 0.025% FS for gas media only

** One year accuracy (including yearly stability) except DP1 and DP2 range
which is 0.05%FS calibration accuracy and 0.05%FS yearly stability.

  • Choice of accuracy levels 0.2%, 0.1%, 0.05% & 0.02% FS
  • Pressure ranges up to 250,000 kPa
  • Suitable for gauge pressure, compound pressure & absolute pressure
  • Selectable engineering units
  • Large back-lit easy to read display
  • % pressure indication with fan shaped graph scale for visual reference
  • Display flash warning when pressure over 120% of FS
  • IECEX certified model available

• Model
ADT681: Regular gauge
ADT681IS: ATEX certified intrinsically safe

• Accuracy
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: 10 to 20% of range: 0.02% of full scale
20% to 110% of range: 0.1% of reading
Vacuum: 0.25% of full scale.
(For detailed 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°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
1/4NPT male, 1/4BSP male, M20×1.5 male (≤15,000 PSI)
1/4HP female or 1/4HP male(≥15,000 PSI)
*1/4HP female: Autoclave F-250-C, 9/16″ – 18 UNF-2B
*1/4HP male: Autoclave M-250-C, 9/16″ – 18 UNF-2A
0.236 inch (Ø6 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
Dimensions: 110mm X 35mm X 176mm
(panel mount gauge: 140mm X 86mm depth)
Weight: 0.6kg

Data Logging
Data storage: 21,843 records (each record includes date, time, pressure and temperature)
Rate: user-selectable from 1 to 99,999 second intervals

• Intrinsic Safety and European Compliance
CE marked
ATEX certified intrinsically safe (ADT681IS)
*(Rubber boot for ADT681 is not ATEX certified)

• Communication:
RS232
*(Do not use the RS-232 connector in a hazardous atmosphere)

• Warranty: 1 year

• Pressure Range

Gauge Pressure [1]

P/N

Pressure Range

Media [2]

Accuracy(%FS)

Burst
Pressure

(psi)

(bar)

V15

-15

-1.0

G

0.025 (0.05, 0.1, 0.2)

GP2

2

0.16

G

0.05 (0.1, 0.2)

GP5

5

0.35

G

0.05 (0.1, 0.2)

GP10

10

0.7

G

0.05 (0.1, 0.2)

GP15

15

1.0

G, L[3]

0.025 (0.05, 0.1, 0.2)

GP30

30

2.0

G, L[3]

0.025 (0.05, 0.1, 0.2)

GP50

50

3.5

G, L

0.025 (0.05, 0.1, 0.2)

GP100

100

7.0

G, L

0.025 (0.05, 0.1, 0.2)

GP300

300

20

G, L

0.025 (0.05, 0.1, 0.2)

GP500

500

35

G, L

0.025 (0.05, 0.1, 0.2)

GP600

600

40

G, L

0.025 (0.05, 0.1, 0.2)

GP1K

1,000

70

G, L

0.025 (0.05, 0.1, 0.2)

GP2K

2,000

140

G, L

0.025 (0.05, 0.1, 0.2)

GP3K

3,000

200

G, L

0.025 (0.05, 0.1, 0.2)

GP5K

5,000

350

G, L

0.025 (0.05, 0.1, 0.2)

GP10K

10,000

700

G, L

0.025 (0.05, 0.1, 0.2)

GP15K

15,000

1,000

G, L

0.05 (0.1,0.2)

GP20K

20,000

1,400

G, L

0.05 (0.1,0.2)

1.5×

GP25K

25,000

1,600

G, L

0.1 (0.2)

1.5×

GP30K

30,000

2,000

G, L

0.1 (0.2)

1.5×

GP36K

36,000

2,500

G, L

0.1 (0.2)

1.5×

GP40K

40,000

2,800

G, L

0.1 (0.2)

1.1×

 

Compound Pressure

P/N

Pressure Range

Media

Accuracy(%FS)

Burst
Pressure

(psi)

(bar)

CP2

±2

±0.16

G

0.05(0.1,0.2)

CP5

±5

±0.35

G

0.05(0.1,0.2)

CP10

±10

±0.7

G

0.05(0.1,0.2)

CP15

±15

±1

G

0.025(0.05,0.1,0.2)

CP30

-15 to 30

-1 to 2

G

0.025(0.05,0.1,0.2)

CP100

﹣15 to 100

﹣1 to 7

G, L

0.025(0.05,0.1,0.2)

CP300

﹣15 to 300

﹣1 to 20

G, L

0.025(0.05,0.1,0.2)

 

Absolute Pressure

P/N

Pressure Range

Media

Accuracy(%FS)

Burst
Pressure

(psi)

(bar)

AP5

5

0.35

G

0.1 (0.2)

AP10

10

0.7

G

0.1 (0.2)

AP15

15

1.0

G

0.1 (0.2)

AP30

30

2.0

G

0.1 (0.2)

AP50

50

3.5

G

0.1 (0.2)

AP100

100

7.0

G, L

0.05 (0.1,0.2)

AP300

300

20

G, L

0.05 (0.1,0.2)

AP500

500

35

G, L

0.05 (0.1,0.2)

AP1K

1,000

70

G, L

0.05 (0.1,0.2)

AP3K

3,000

200

G, L

0.05 (0.1,0.2)

AP5K

5,000

350

G, L

0.05 (0.1,0.2)

 

Differential Pressure
P/NPressure RangeMediaAccuracy
(%FS)
Burst
Pressure
Static
Pressure
Range
(inH2O)(mbar)
DP1±1±2.5G0.05100×±10 psi
DP2±2±5.0G0.05100×±10 psi
DP5±5±10G0.0550×±10 psi
DP10±10±25G0.0520×±10 psi
DP20±20±50G0.025 (0.05)20×±10 psi
DP30±30±75G0.025 (0.05)15×±10 psi
DP50±50±160G0.025 (0.05)±10 psi
DP150±150±350G0.025 (0.05)50 psi
DP300±300±700G0.025 (0.05)50 psi

*Note: [1]. Sealed gauge pressure for above 1000 psi
[2]. G=Gas, L=Liquid (please specify media type when place order)
[3]. 0.025% FS for gas media only

** One year accuracy (including yearly stability) except DP1 and DP2 range
which is 0.05%FS calibration accuracy and 0.05%FS yearly stability.

  • Measure and source 13 T/Cs, 11 RTDs, mV, mA, Ohms, frequency and pulses
  • Accuracy to 0.01% of reading
  • Pressure via
  • external pressure modules
  • up to 70,000kPa
  • 24V loop power
  • Task management capability, upload, download and document
  • Easy to use smartphone type menu and interface
  • Rugged design for use in harsh environments