Additel 681A Digital Pressure Gauge

  • Pressure ranges up to 60,000 psi (4,200 bar)
  • 0.02% or 0.05% FS accuracy
  • Measures gauge or absolute pressure
  • % pressure indication with fan-shaped graphic
  • Fully temperature compensated accuracy (-10 ~ 50°C)
  • Bluetooth communication
  • Communication with Additel’s Link Mobile App
  • Large easy-to-read display
  • Intrinsically safe version (681AEx)
  • Data logging (up to 10,000,000 records)
  • IP67 rated

 

Models:  Please see Ordering Information for model numbers.

 

Please call or contact support for equipment price, lead time, and to order equipment.

Please call or contact support for calibration quote. We will meet or beat any manufacturer’s calibration price.

Digital pressure gauge displaying 100.00 kPa in blue casing.

Details

Additel’s 681A Series Digital Pressure Gauges are designed to be your favorite tool for a wide range of pressure measurement and calibration applications. With features such as datalogging and Bluetooth technology included, you will find these gauges to be high in value at a reasonable cost. These durable IP67 rated gauges have been built with outdoor elements in mind and are the perfect fit for field work as well as in the laboratory. If you are working in an intrinsically sensitive area, look to our Ex-versions of this amazing digital pressure gauge to provide that extra level of safety in sensitive areas.

 

Durable:

  • The model ADT681A has been built with the finest materials to ensure that it can hold up to the elements. Everything from the stainless steel outer shell to the innermost sensor design have been optimized to ensure that this gauge will keep you informed with on-demand and logged pressure readings for years to come. The IP67 rating ensures that dusty and wet environments won’t hamper this gauges ability to perform while the shock and vibration resistance (5g vibration 10g shock) coupled with the corrosion resistant wetted parts help to protect the inner workings of these durable Additel gauges.

 

Easy-to-use:

  • Technicians often have tight schedules and heavy workloads, which leaves little extra time for correcting mistakes or doing rework. The ADT681A solves this problem with carefully designed button functions and menus that are smooth and easy to use which saves on valuable time. The display is clear in bright sunlight, and the backlight can be turned on with a one-button press for use in low light situations. The pressure value can be displayed in large fonts and can be read from a few meters away, making this gauge the perfect device for no-nonsense measurement, calibration and verification work.

 

Easy to maintain:

  • The ADT681A is designed with membrane buttons, making them easy to clean and maintain over time, which can simply be wiped clean for quick and simple cleaning. Coupled with the extra-long battery life of these easy-to-use gauges, you will find that maintenance is minimal and infrequent.

Specifications

Specifications for ADT681A and ADT681AEx
Intrinsic Safety 

&

European Compliance

 681A:

  • CE marked

681AEx:

  • Intrinsically safe
  • CE marked
  • EU:  II 1G EX ia IIC T4 Ga T4 at -20~50°C
  • North America:  CLASS I, Division 1, Groups A, B, C and D, T4
    CLASS I, Zone 0, AEx ia IIC T4 Ga
    T4 at -20~50°C
  • International:  EX ia IIC T4 Ga T4 at -20 ~ 50°C
Accuracy 

(For detailed accuracy, see pressure range tables)

 681A(Ex)-:

  • -01:  0.01% of full span
  • -02:  0.02% of full span
  • -05:  0.05% of full span

681A(Ex)-RD:

  • 0% to 20% of range:  ± (0.02% of full span)
  • 20% to 110% of range:  ± (0.1% of reading)
  • Vacuum:  ± (0.25% of FS), FS = -14.5 psi

Built-in barometer: ± 55 Pa (optional)
Gauge types Gauge pressure, compound pressure, absolute pressure (calculated by gauge pressure and barometric pressure), differential pressure and barometric pressure
Multifunction

Fan-shaped section

 Atmospheric pressure, ambient temperature, peak-peak values (max, min), TARE, leak test, pressure percentage display, time display, data logging status
Display Wide viewing angle FSTN segment code LCD, three partition design

White backlight, backlight time: ON, 15 seconds, 30 seconds, 45 seconds, 60 seconds, the default is 15 seconds

5 ~ 6 digit display can be switched, character height 14.8 mm (0.58″), main display + unit display + fan-shaped section

Display rate:  3 readings per second in low power mode (default setting). Adjustable from 10 readings per second to 1 reading every 10 seconds
Pressure units Pa, kPa, MPa, psi, mbar, bar, kgf/cm2, %, mmH2O(4°C), mmHg(0°C), InH2O(4°C), InHg(0°C)

6 engineering water column units:  inH2O(20°C), inH2O(60°F), mmH2O(20°C), mmH2O(15°C), ftH2O(60°F), ftH2O(4°C)

1 custom unit:  identified by the USER code, and the conversion coefficient can be set through Additel -Link 
Environmental Compensated Temp. :  14°F to 122°F (-10°C to 50°C)

Operating Temp. :  -4°F to 122°F (-20°C to 50°C)

Storage Temp. :  -40°F to 167°F (-40°C to 75°C)

Humidity:  5% RH ~ 95% RH, no condensing
Pressure port ≤15,000 psi:  1/4NPT male, 1/2NPT male, 1/4BSP male, 1/2BSP male, M20 x 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:  barb fitting

Other connections available per request
Power Battery:  3 AA alkaline batteries 

Battery life: 

  • Super stable mode[1]: 4000 hours (3 reading/s, default), 1000 hours (10 reading/s)
  • Low power mode[2]: 5000 hours (2 reading/s), 9000 hours (1 reading/s), 18000 hours (1 reading/10s)

Power auto-off:  120, 90, 60, 45, 30, 15 minute auto-off options or never

External power:  power supply through USB (optional)
Enclosure Materials:

  • Case material:  304 SS;
  • Front panel material:  anti-static PET;
  • Rubber boot material (optional):  anti-static TPU

Wetted parts:  316L SS

Dimensions:  Ø4.65″ x 1.65″ depth x 7″ height (Ø118 mm x 42 mm depth x 178 mm height)

Weight:  1.5 lbs (0.68 kg)
Compliance Protection Level:  IP67 (against 1 meter water immersion for 30 mins)

Vibration:  5 g

Shock Resistance:  10 g

1 meter drop test (without rubber boot)
Data logging (Optional) Data storage:  10,000,000 records (time and pressure) or 5,000,000 records (time, pressure and temperature)

Rate:  user-selectable as 0.1 and 1 to 99,999 second intervals
Communication Bluetooth (BLE4.2), USB-C, RS232 *(Do not use the USB-C or RS-232 connector in a hazardous area)
Warranty 1 year
  • [1]: The pressure sensor has been powered continuously when the gauge is on, to improve the measurement resolution and reduce the impact of ambient humidity.
  • [2]: The pressure sensor will be powered off after each sampling, to improve the continuous working hours.

 

 

More Specifications: Pressure range (Gauge pressure, barometric pressure, compound pressure, differential pressure)

Ordering Information

Model numbers of the Additel 681A

ADT681A- and ADT681AEx-
Accuracy
  • -01:  0.01% of full span
  • -02:  0.02% of full span
  • -05:  0.05% of full span
  • -10:  0.1% of full span
  • -20:  0.2% of full span
  • -RD:  0.1% of reading
Pressure range P/N
Range type
  • -PSI:  Range by psi
  • -BAR:  Range by bar
  • -H₂O:  Range by inH₂O
Pressure port type
  • -N:  1/4NPT male
  • -N2:  1/2NPT male
  • -B:  1/4BSP male
  • -B2:  1/2BSP male
  • -M:  M20 X 1.5 male
  • -AF:  Autoclave F-250-C female
  • -AM:  Autoclave M-250-C male
Data logging
  • -DL
Built-in Barometric Pressure Option ±55 Pa
  • -BP

Included accessories with the Additel 681A

  • Rubber boot
  • AA alkaline battery (3 pcs)
  • USB cable (type-C) (1 pc)
  • Silicone tube – 1 meter each (2 pcs for DP models only)

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