Additel ADT 673 is an advanced digital pressure calibrator designed for accurate pressure measurement, transmitter calibration and demanding field or laboratory applications. With pressure ranges extending up to 60,000 psi / 4,200 bar, accuracy options down to 0.02% FS, a built-in barometer, electrical measurement functions, 24 V loop power and optional full HART communication, the ADT 673 combines the capabilities of a precision digital pressure gauge and multifunction pressure calibrator in one rugged portable instrument.
The Additel ADT 673 uses modern silicon pressure sensor technology, comprehensive temperature compensation and a powerful digital platform to provide reliable pressure measurements across a broad range of applications. Gauge, compound, absolute, differential and barometric pressure configurations are available.
A large 3.4-inch color touchscreen with a smartphone-like user interface provides intuitive access to measurement values, configuration settings, data logging and calibration functions. Bluetooth and USB communication are included, while Wi-Fi and RS232 are available as options.
For pressure transmitter calibration, the Additel ADT 673 can measure current and voltage while simultaneously providing 24 V loop power. An optional full HART field communicator further expands the instrument for configuration and calibration of intelligent process transmitters.
At europascal, the Additel ADT 673 complements a comprehensive portfolio of professional pressure measurement and calibration equipment. europascal also provides accredited calibration services for pressure measuring instruments. For professional calibration and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
The Additel ADT 673 combines precision pressure measurement, electrical process measurement and advanced communication functions in one portable calibrator.
Key benefits include:
- Advanced digital pressure calibrator
- Pressure ranges up to 60,000 psi / 4,200 bar
- Accuracy down to 0.02% FS
- 0.1% of reading accuracy option
- Gauge pressure measurement
- Compound pressure measurement
- Absolute pressure measurement
- Differential pressure measurement
- Built-in barometer
- Fully temperature compensated
- 3.4-inch color touchscreen
- Smartphone-like operating interface
- Current measurement up to ±30 mA
- Voltage measurement up to ±30 V
- 24 V loop power
- Switch testing
- Optional full HART field communicator
- Integrated data logging
- 8 GB internal storage
- More than 100 million records
- Bluetooth communication
- USB Type-C communication
- Optional Wi-Fi
- Optional RS232
- Additel Link mobile app compatibility
- IP67 protection
- Rechargeable lithium-ion battery
- ISO/IEC 17025 accredited calibration certificate with data included
Pressure Ranges up to 4,200 bar
The Additel ADT 673 is available in an exceptionally broad selection of pressure ranges.
The product family extends from low and differential pressure ranges to:
60,000 psi / 4,200 bar.
This allows the ADT 673 platform to cover applications ranging from process pressure measurement through hydraulic high-pressure calibration.
Depending on the selected configuration, the instrument can measure:
- Gauge pressure
- Compound pressure
- Absolute pressure
- Differential pressure
- Barometric pressure
This broad selection allows users to select a pressure range that closely matches the device under test rather than using one oversized pressure range for every application.
Accuracy Down to 0.02% FS
The Additel ADT 673 is available with several accuracy options depending on the selected pressure range.
The ADT673-02 provides accuracy of:
0.02% of full span
while the ADT673-05 provides:
0.05% of full span.
Additel also offers the ADT673-RD specification.
For this version, accuracy is specified as:
0 to 20% of range: 0.02% FS
and:
20 to 110% of range: 0.1% of reading.
The availability of different accuracy classes allows the ADT 673 to be configured according to the actual calibration requirement.
Fully Temperature Compensated
Pressure sensor performance can be influenced by ambient temperature.
The Additel ADT 673 is therefore fully temperature compensated over the range:
-10 °C to 50 °C.
This broad compensated temperature range is particularly valuable for field calibration.
Pressure measurements can therefore be performed under changing environmental conditions while maintaining the specified measurement performance.
The operating temperature range is also -10 °C to 50 °C, while the storage temperature range extends from -30 °C to 70 °C.
Gauge Pressure Measurement
The Additel ADT 673 provides a broad selection of gauge pressure ranges.
Depending on the selected range, the pressure medium can be gas or liquid.
At pressures above 1,000 psi, the corresponding configurations use sealed gauge pressure measurement.
Gauge pressure applications include:
- Pressure gauge calibration
- Pressure transmitter calibration
- Pressure sensor testing
- Pressure switch testing
- Hydraulic pressure measurement
- Pneumatic pressure measurement
- Process pressure monitoring
Compound Pressure Measurement
Compound pressure versions of the Additel ADT 673 combine negative and positive gauge pressure measurement within one instrument.
Available compound ranges extend from vacuum into positive pressure ranges.
This is particularly useful when calibrating devices that operate on both sides of atmospheric pressure.
Typical applications include:
- Compound pressure gauges
- Process transmitters
- Vacuum and pressure sensors
- Industrial process instrumentation
The use of one compound pressure calibrator can reduce the need to switch between separate vacuum and positive pressure reference instruments.
Differential Pressure Measurement
The ADT 673 is also available in dedicated differential pressure configurations.
Differential ranges extend from very low pressure differences upward.
Depending on the selected range, accuracy is available down to:
0.02% FS.
Typical differential pressure applications include:
- Differential pressure transmitters
- Flow measurement
- Filter monitoring
- HVAC systems
- Process instrumentation
- Low-pressure measurement
This expands the ADT 673 beyond conventional gauge pressure calibration.
Built-in Barometer
Every Additel ADT 673 includes a built-in barometric pressure sensor.
The standard built-in barometer provides an accuracy specification of:
55 Pa.
The integrated barometer enables additional pressure measurement functions and allows the instrument to provide gauge or absolute pressure measurement depending on its configuration.
This capability eliminates the need for a separate external barometer in many field calibration applications.
Electrical Measurement
The Additel ADT 673 is more than a digital pressure reference.
It also provides integrated electrical measurement functions for process calibration.
The instrument can measure DC voltage up to:
±30.0000 V
with a specified accuracy of:
±(0.01% of reading + 1.5 mV).
DC current can be measured up to:
±30.0000 mA
with a specified accuracy of:
±(0.01% of reading + 1.5 µA).
These capabilities make the ADT 673 particularly suitable for pressure transmitter calibration.
24 V Loop Power
The Additel ADT 673 provides built-in:
24 V loop power.
The output is specified as:
24 V ±1 V
with a maximum current of:
30 mA.
This allows the calibrator to power many common industrial pressure transmitters directly during calibration.
A separate external loop power supply is therefore unnecessary for many field calibration tasks.
Pressure Transmitter Calibration
The combination of pressure measurement, current measurement and 24 V loop power makes the Additel ADT 673 an effective pressure transmitter calibrator.
A typical calibration configuration consists of:
Pressure source → Additel ADT 673 → Pressure transmitter
The internal pressure sensor measures the applied reference pressure.
At the same time, the ADT 673 can measure the transmitter’s electrical output.
For a conventional industrial transmitter, this is commonly:
4 to 20 mA.
The calibrator can also provide the required 24 V loop power.
This allows the pressure input and electrical transmitter output to be compared using one portable instrument.
Optional HART Field Communicator
For intelligent process transmitters, the Additel ADT 673 can be equipped with an optional full HART field communicator.
This enables communication with HART-compatible transmitters directly from the pressure calibrator.
The combination of precise pressure measurement, electrical measurement, loop power and HART communication creates a powerful tool for commissioning, maintenance and calibration of smart pressure transmitters.
Typical HART applications include:
- Transmitter configuration
- Process variable monitoring
- Device diagnostics
- Calibration
- Field maintenance
Pressure Switch Testing
The Additel ADT 673 also supports pressure switch testing.
The electrical input can detect:
OPEN/CLOSED
switch states.
Both mechanical switches and NPN/PNP digital switches are supported.
Pressure can be increased until the switch changes state and then decreased until the switch resets.
This allows determination of:
- Switching pressure
- Reset pressure
- Switching hysteresis
The function is particularly useful for commissioning and preventive maintenance.
3.4-Inch Color Touchscreen
The Additel ADT 673 uses a modern:
3.4-inch capacitive color touchscreen.
The display is protected by a replaceable tempered-glass screen protector.
The smartphone-like operating concept provides quick access to pressure measurements, electrical functions, configuration settings and stored data.
This modern interface replaces the traditional button-heavy operation found on many conventional pressure calibrators.
Adjustable Resolution
The displayed pressure resolution can be configured by the user.
Available settings include:
4 digits
5 digits
or:
6 digits.
The display update rate can also be adjusted.
The default rate is three readings per second, while settings from:
10 readings per second
to:
one reading every 20 seconds
are available.
This enables the display behavior to be adapted to dynamic or stable pressure applications.
Comprehensive Data Logging
The Additel ADT 673 includes extensive onboard data logging.
The instrument provides:
8 GB internal storage
with capacity for:
more than 100 million records.
Both manual and automatic recording modes are available.
Automatic recording intervals can be configured from:
0.1 to 9,999.9 seconds.
This makes the instrument suitable not only for individual calibration points but also for long-term pressure monitoring and process analysis.
Bluetooth and USB Communication
Bluetooth and USB Type-C communication are included as standard.
Bluetooth allows the ADT 673 to communicate wirelessly with compatible mobile devices.
USB Type-C provides a convenient wired interface for data transfer and instrument communication.
Depending on the configuration, additional communication options are available.
Optional Wi-Fi and RS232
The Additel ADT 673 can be expanded with additional communication interfaces.
Available options include:
- Wi-Fi
- RS232
These interfaces provide additional flexibility for laboratory integration, automated calibration systems and remote data handling.
Additel Link Mobile App
The Additel ADT 673 communicates with the Additel Link mobile app.
This enables users to remotely monitor the pressure calibrator from a compatible mobile device.
Wireless monitoring can be particularly useful when the pressure calibrator is installed at a test point that is difficult to observe directly.
It also provides a convenient modern interface for field technicians.
IP67 Protection
The Additel ADT 673 is rated:
IP67.
This robust protection level makes the calibrator suitable for demanding field and laboratory environments.
The enclosure is manufactured from 304 stainless steel, while the wetted parts use 316 stainless steel, with exact wetted materials dependent on the selected pressure range.
The instrument is also specified for vibration and shock resistance, supporting professional field use.
Rechargeable Battery
The ADT 673 uses a rechargeable lithium-ion battery.
Typical battery operating time is approximately:
16 hours.
Typical charging time is approximately:
4 hours.
An external 110 V / 220 V power adapter provides 5 V DC power for charging and operation.
This combination makes the instrument suitable for both mobile field use and extended laboratory applications.
Multiple Pressure Connections
The Additel ADT 673 is available with several pressure connection options.
For pressure ranges below 15,000 psi, available connections include:
- 1/4 NPT male
- 1/2 NPT male
- 1/4 BSP male
- 1/2 BSP male
- M20 × 1.5 male
For high-pressure configurations at and above 15,000 psi, dedicated high-pressure connections are available.
Differential pressure models use barb fittings.
This allows the calibrator to be adapted to different international pressure systems and applications.
ISO/IEC 17025 Accredited Calibration Included
The Additel ADT 673 is supplied with an:
ISO/IEC 17025 accredited calibration certificate
including:
calibration data.
This provides an important basis for metrological traceability.
For professional calibration laboratories and industrial quality management systems, the included calibration documentation simplifies integration of the instrument into controlled measurement equipment management processes.
Typical Applications
The Additel ADT 673 is suitable for:
- Pressure gauge calibration
- Pressure transmitter calibration
- HART transmitter calibration
- Pressure sensor calibration
- Pressure switch testing
- High-pressure measurement
- Differential pressure measurement
- Compound pressure measurement
- Absolute pressure measurement
- Process instrumentation
- Field calibration
- Laboratory calibration
- Hydraulic pressure measurement
- Pneumatic pressure measurement
- Process maintenance
- Commissioning
- Troubleshooting
Technical Highlights
| Feature | Additel ADT 673 |
|---|---|
| Device type | Advanced digital pressure calibrator |
| Maximum pressure | 60,000 psi / 4,200 bar |
| Accuracy options | 0.02% FS, 0.05% FS or 0.1% RD |
| Gauge pressure | Yes |
| Compound pressure | Yes |
| Absolute pressure | Yes |
| Differential pressure | Yes |
| Built-in barometer | Yes |
| Barometer accuracy | 55 Pa |
| Temperature compensation | -10 °C to 50 °C |
| Display | 3.4-inch color touchscreen |
| Resolution | 4, 5 or 6 digits |
| Current measurement | ±30 mA |
| Voltage measurement | ±30 V |
| Loop power | 24 V |
| Switch testing | Yes |
| HART | Optional full field communicator |
| Data storage | 8 GB / more than 100 million records |
| Bluetooth | Standard |
| USB Type-C | Standard |
| Wi-Fi | Optional |
| RS232 | Optional |
| Protection | IP67 |
| Enclosure | 304 stainless steel |
| Wetted parts | 316 stainless steel, range dependent |
| Battery | Rechargeable Li-ion |
| Typical battery life | 16 hours |
| Calibration certificate | ISO/IEC 17025 accredited with data |
Additel ADT 673 for Field and Laboratory Calibration
The Additel ADT 673 bridges the gap between a precision digital pressure gauge and a multifunction process calibrator.
For straightforward pressure measurement, the instrument provides a precise integrated pressure sensor and intuitive touchscreen interface.
For calibration applications, electrical measurement, loop power, switch testing and data logging significantly expand its functionality.
For smart process instrumentation, optional HART communication provides an additional level of integration.
This makes the ADT 673 suitable for calibration departments that require one portable instrument for a broad variety of pressure-related tasks.
Why Choose the Additel ADT 673?
The Additel ADT 673 combines precise pressure measurement, process calibration and modern digital functionality in one robust portable instrument.
Pressure ranges up to 60,000 psi / 4,200 bar allow the platform to cover applications ranging from low and differential pressure to demanding hydraulic high-pressure measurement.
Accuracy options down to 0.02% FS provide the performance required for professional pressure calibration, while the 0.1% of reading version offers an attractive specification across a broad portion of its measuring range.
Integrated current and voltage measurement, 24 V loop power and optional full HART communication make the ADT 673 particularly useful for pressure transmitter calibration.
The modern 3.4-inch color touchscreen simplifies operation, while extensive data logging with 8 GB of internal storage provides capacity for more than 100 million records.
Bluetooth and USB are included as standard, with optional Wi-Fi and RS232 providing additional communication flexibility.
The rugged IP67 stainless-steel construction and fully temperature-compensated pressure measurement from -10 °C to 50 °C make the instrument suitable for both field and laboratory applications.
At europascal, we provide Additel pressure calibration technology for professional laboratory and field applications, including digital pressure calibrators, reference gauges, pressure modules, pressure controllers and pressure generation equipment.
For professional calibration and metrological traceability of the Additel ADT 673 and other pressure measuring instruments, visit the europascal Calibration Service.
Further Additel products are available from europascal.
Manufacturer information about the Additel ADT 673 is available on the official Additel ADT 673 product page.
