Additel 273Ex Intrinsically Safe Handheld Barometric Pressure Calibrator


Key Features:

  • 40 Pa Accuracy
  • Intrinsically Safe
  • Field Switchable Pressure Module
  • Dual Digital Pressure Module Inputs
  • Color Touchscreen Display
  • Built-in Quick Test Task Feature
  • Built-in Barometer
  • Intuitive Smartphone Like Interface
  • Bluetooth and USB Communication
  • Optional HART Communication
  • Communicates with Additel's Link Mobile App
Product Options:

Secured and trusted checkout with

The Additel ADT273EX Intrinsically safe barometric pressure calibrator has an optional HART communications capability. The Barometric version has a range of 60kPa to 110kPa. The ADT273EX has passed the most stringent ATEX, IECEX, CSA, and UKCA intrinsic safety certifications from authoritative organizations. Also its explosion-proof level is Ex ia IIC T4 Ga.

Functional Features


User can convert measured current, voltage and frequency values into pressure, temperature and flow values. Three conversion functions available: linearity, square and square root


Average sliding filter (sampling number: 1 ~ 50) First-order linear filter (First-order coefficient: 0.01 ~ 1)


The measurement value will be automatically displayed at the moment the switch change of state. The latest 8 state changes will be stored in the memory.

Pressure Tare

Tare value is set through the user interface

Pressure stability indicator

Stability time and criteria is selectable


General Specifications

Input Channels

Top: 1 electrical signal measurement channel, φ4mm banana jacks

Right side: 2 channels for external digital pressure modules, 5-core dedicated aviation plug

Bottom: embedded digital pressure module (model ADT158Ex), field switchable.

Internal: 1 embedded atmospheric pressure sensor

Barometric Accuracy

±55 Pa

Measurement Rate

mV, V, mA & frequency: 3 times/sec

Pressure module: 1~10 times/sec selectable (3 as default)

Barometer: 1 time/sec


4000mAh, 14.4Wh explosion-proof intelligent lithium battery, charging time = 6~8 hours, battery can be charged independently Typical working time 100 hours (measurement mode)


Guaranteed temperature range of technical specifications: (-10 ~ 50)°C

Operating temperature: (-20 ~ 50)°C

Storage temperature: (-30 ~ 70)°C

Humidity: 0% to 95% RH, non-condensing.

Altitude: 3000 meters

Warm-up Time

10 min to fully meet technical specifications

Port Protection Voltage

30V max

Explosion-proof Grade

ATEX & IECEX: Ex ia IIC T4 Ga (Ta = -10°C ~ 50°C)

CSA: Class I, Division 1, Group A,B,C and D, T4 Ex ia IIC T4 Ga Class I, Zone 0, AEx ia IIC T4 Ga


CE Certification

TUV IEC61326, IEC61010

Rohs Compliance

Rohs II Directive 2011/65/EU, EN50581:2012

Protection Level

IP67, 1 meter drop test


Isolate USB-Type C (slave), Bluetooth


4.4-inch color display capacitive screen, transflective, with LED backlight


6.97" x 4.13" x 2.04" (177 mm x 105 mm x 52 mm) which doesn't include bottom ADT158Ex.


1.98 lb (0.9 kg)


Electrical Specifications






Voltage Measurement


0.015%RDG + 0.005%FS


Impedance: >100MΩ


0.015%RDG + 0.005%FS


Impedance: >1MΩ

Current Measurement


0.015%RDG + 0.005%FS


Impedance: < 40Ω

Frequency Measurement

0.01~50000Hz (auto range)

0.005% RDG + 2 last digit

6-digit auto-resolution

Min threshold voltage: 2.5V

Units: Hz, kHz, MHz, CPM, CPH, s, ms, us

Switch On-Off Measurement

Inspection voltage: (3 ~ 30)V

Response speed: < 10ms, supports wet and dry switch

Pulse Count

0 ~ 9999999, optional rising edge and falling edge

Min threshold voltage: 2.5V

Loop Power

20V ± 10%, max output impedance: 320Ω, max load current: 25mA


Pressure Technichal Specifications

Pressure resolution

4, 5, or 6 digit resolution (user selectable)

Temperature Compensation

-10°C~50 °C

Pressure Module Type

Built-in digital pressure module: ADT158Ex, for more detailed information, please see ADT 158Ex datasheet. External digital pressure module: ADT161Ex,for more detailed information, please see ADT 161Ex datasheet.


Refer to the technical specification of the ADT158Ex and ADT161Ex

High Static Pressure and Differential Pressure Synthesis Index

Two modules must be with the same range; Typical Differential pressure accuracy of 0.002%FS or 0.02%RD, whichever is greater when using two 0.02%FS external modules. Typical Differential pressure accuracy of 0.002%FS or 0.05%RD, whichever is greater when using two 0.05%FS external modules.


Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account

Products In This Series

As low as

Now $3,198.00