The Additel ADT 783-6K Pressure Controller is a high-performance automated pneumatic pressure controller designed for demanding professional calibration laboratories, production testing and automated pressure measurement systems. As the highest-pressure configuration of the ADT783 series, it provides automatic pneumatic pressure control from vacuum up to an impressive 6,000 psi / 420 bar.
The maximum pressure control range extends from:
-14.35 to 6,000 psi
or approximately:
-0.99 to 420 bar
The standard ADT 783-6K configuration is designed for:
Gauge Pressure
With the appropriate reference atmospheric pressure module installed, users can also select between:
Gauge and Absolute Pressure
Depending on the selected Additel ADT151 pressure module, different metrological performance classes are available. Accuracy specifications include:
0.02 % FS
0.01 % FS
or:
0.01 % RD
depending on the selected module.
Pressure control stability is specified as:
<0.003 % FS
with typical performance of:
0.001 % FS
Despite its exceptionally high pneumatic pressure range, the ADT 783-6K provides a specified pressure control response time of:
≤20 seconds
under Additel’s defined test conditions.
Two interchangeable internal ADT151 pressure module bays allow the controller to combine high-pressure capability with a second, lower pressure measurement range. Fixed or automatic range selection can then be used to optimize the controller for different devices under test.
For professional calibration and metrological traceability of pressure controllers, reference pressure modules, pressure gauges, transmitters and sensors, visit the europascal calibration service.
Your Benefits at a Glance
The Additel ADT 783-6K Pressure Controller provides:
- Automated pneumatic pressure control
- Pressure range from vacuum to 6,000 psi
- Pressure range from approximately -0.99 to 420 bar
- Gauge pressure control
- Optional gauge/absolute pressure switching
- Accuracy options down to 0.01 % FS
- High-performance configurations down to 0.01 % RD
- Pressure control stability <0.003 % FS
- Typical control stability of 0.001 % FS
- Pressure control response time ≤20 seconds
- Two interchangeable ADT151 pressure module bays
- Automatic or fixed pressure range selection
- Maximum high-to-low range ratio of 40:1
- Fast, Standard and Custom control modes
- Maximum overshoot <1 % FS
- Maximum external load volume of 1,000 ml
- External clean and dry air or nitrogen supply
- Maximum supply pressure of 440 bar
- Optional Contamination Prevention System
- Integrated pressure port filtration
- Remote operation
- Modbus support
- Large touchscreen interface
- Suitable for calibration laboratories and automated test systems
Automated Pneumatic Pressure Control up to 420 bar
The defining feature of the Additel ADT 783-6K is its exceptionally wide pneumatic pressure range.
The controller operates from approximately:
-0.99 to 420 bar
or:
-14.35 to 6,000 psi
This makes the ADT 783-6K the highest-pressure configuration within the ADT783 series.
It provides an automated pneumatic alternative for calibration tasks that would otherwise often require high-pressure manual systems or hydraulic pressure generation.
The use of gas as the pressure medium also avoids many of the handling and contamination issues associated with hydraulic oil.
External Pneumatic Pressure Supply
Unlike portable automatic pressure calibrators with an integrated pressure-generation pump, the ADT 783-6K is designed as a laboratory pressure controller using an:
external pneumatic pressure source
Additel specifies the pressure medium as clean and dry:
Air or Nitrogen
The external supply provides the pressure energy, while the ADT 783-6K automatically regulates the pressure to the selected setpoint.
This architecture provides fast, repeatable and highly stable pressure control for laboratory and automated test applications.
Maximum Supply Pressure of 440 bar
For the ADT 783-6K, Additel specifies a maximum supply pressure of:
440 bar
For optimum control performance, the supply pressure should be adjusted to approximately 110 % of the maximum range of the installed internal pressure control module or 1 bar, whichever is greater.
At pressures approaching 420 bar, all pressure-generating equipment, tubing, fittings, valves and connected instruments must be appropriately rated for the required pneumatic pressure.
Gauge Pressure Control
The standard ADT 783-6K configuration is designed for:
Gauge Pressure
Gauge pressure is referenced to atmospheric pressure:
p_gauge = p_absolute – p_atmosphere
The controller covers negative gauge pressure as well as positive pressures up to 420 bar.
This provides a very wide operating range for industrial and laboratory gauge pressure calibration.
Optional Absolute Pressure Capability
The ADT 783-6K can optionally support:
Gauge and Absolute Pressure
operation.
After an appropriate reference atmospheric pressure module has been installed, the user can select gauge or absolute pressure.
This provides additional flexibility for calibration laboratories that need to calibrate different types of pressure instruments using one controller platform.
Two Interchangeable ADT151 Pressure Module Bays
The Additel ADT 783-6K provides:
two interchangeable internal pressure module bays
for Additel ADT151 pressure modules.
The high-pressure module bay supports modules from:
CP2K / CP2KM
through:
CP6K / CP6KM
The low-pressure module bay supports modules from:
CP150 / CP150M
through:
CP6K / CP6KM
This modular architecture allows the pressure measurement capability to be adapted to the calibration workload.
Maximum High-to-Low Range Ratio of 40:1
For the ADT 783-6K, Additel specifies a maximum high-to-low range ratio of:
40:1
This is particularly useful because a controller capable of reaching 420 bar may also be required to calibrate instruments with significantly smaller measuring ranges.
Using a suitably selected lower-range ADT151 module can improve the metrological performance for these lower-pressure applications.
Automatic Range Selection
The ADT 783-6K supports:
Fixed
and:
Auto
range switching.
In automatic mode, the system can select the appropriate installed pressure measurement range according to the required pressure.
This simplifies workflows where instruments with different pressure ranges are calibrated on the same controller.
Why Multiple Pressure Ranges Matter
Consider a laboratory that needs to calibrate pressure instruments with ranges of:
- 10 bar
- 40 bar
- 100 bar
- 250 bar
- 400 bar
Using only a 420 bar reference range for every device would not necessarily provide the best absolute measurement performance at the lower pressure ranges.
The second internal ADT151 module allows a lower range to be installed.
This provides a better match between the reference pressure range and the device under test.
For professional calibration laboratories, this modular concept can help optimize the achievable measurement uncertainty over a wide operating range.
Accuracy Options
Depending on the selected ADT151 module, the Additel ADT 783-6K provides accuracy specifications of:
0.02 % FS
0.01 % FS
or:
0.01 % RD
This allows the controller to be configured according to the accuracy and measurement uncertainty requirements of the application.
FS refers to full scale, while RD refers to the measured reading.
The distinction becomes particularly relevant when evaluating measurement performance over a wide pressure range.
Precision and Accuracy
Additel distinguishes between:
Precision
and:
Accuracy
in the ADT783 specifications.
Depending on the selected module, precision specifications include:
0.01 % FS
0.007 % FS
or:
0.008 % RD
Available accuracy specifications include:
0.02 % FS
0.01 % FS
or:
0.01 % RD
According to Additel, the precision specification considers contributions including linearity, hysteresis, repeatability, resolution and temperature compensation.
The accuracy specification additionally includes reference standard measurement uncertainty and annual drift.
This distinction is particularly important when evaluating the ADT 783-6K for demanding calibration applications.
Control Stability <0.003 % FS
The pressure control stability of the Additel ADT 783-6K is specified as:
<0.003 % FS
Typical performance can reach:
0.001 % FS
depending on configuration, pressure level and stabilization time.
Additional stabilization time may be required to achieve the best 0.001 % FS control performance.
High pressure stability is particularly valuable when calibrating high-resolution pressure gauges, transmitters and reference pressure instruments.
Control Response Time ≤20 Seconds
The ADT 783-6K provides fast automatic pressure regulation despite its high 420 bar pneumatic pressure capability.
Additel specifies a pressure control response time of:
≤20 seconds
under defined test conditions.
For the 6K model, the manufacturer’s test condition uses a:
50 ml external load volume
and a:
10 % pressure step
with the response time measured until a stability level of 0.005 % FS is achieved.
Achieving the tighter typical 0.001 % FS stability can require additional stabilization time.
Fast, Standard and Custom Control Modes
The ADT 783-6K provides three pressure control modes:
Fast
Standard
Custom
These modes allow pressure regulation to be adapted to the calibration setup.
Different devices, connection volumes and pressure ranges can require different control behavior.
The available modes provide additional flexibility when optimizing calibration cycle time and pressure stability.
Maximum Overshoot <1 % FS
Additel specifies maximum pressure overshoot of:
<1 % FS
Controlled pressure approach is particularly important at high pressure because excessive overshoot could expose the device under test to unnecessary pressure.
The automated controller approaches and regulates the selected pressure setpoint without the continuous manual adjustment required by conventional pressure generation systems.
External Load Volume up to 1,000 ml
The ADT 783-6K supports external load volumes up to:
1,000 ml
This provides flexibility when connecting:
- Pressure gauges
- Pressure transmitters
- Pressure sensors
- Pressure transducers
- Manifolds
- Calibration adapters
- Pressure tubing
The actual response time depends on the connected volume, pressure step, supply pressure, selected control mode and required stability.
High-Pressure Pneumatic Calibration
The 420 bar pressure capability makes the ADT 783-6K particularly interesting for applications traditionally associated with hydraulic pressure calibration.
Pneumatic calibration offers several practical advantages where it is technically appropriate.
The device under test is not filled with calibration oil, which can be beneficial for instruments that must remain clean or are intended for gas applications.
Pneumatic systems also eliminate the need to drain and clean hydraulic fluid from the device after calibration.
Pressure Connection
The ADT 783-6K uses a:
1/4 BSP male
pressure connection.
Additel installs filtration on the pressure ports.
The specified filters are approximately:
40 to 100 µm
These filters help protect the internal pressure controller against particles entering through the pressure connections.
Optional Contamination Prevention System
An optional:
Contamination Prevention System (CPS)
is available.
The CPS is particularly useful when devices under test may contain:
- Oil
- Moisture
- Particles
- Process residues
- Other contamination
Preventing contamination from entering the controller helps protect its valves, reference pressure modules and internal pneumatic system.
Quick-Change Pressure Modules
The modular ADT151 concept allows pressure modules to be exchanged as calibration requirements change.
Additel designed the ADT783 platform for rapid pressure module changes.
This means one controller can be adapted to different pressure ranges without replacing the complete instrument.
For laboratories with changing workloads, this modular architecture can improve equipment utilization.
Digital Pressure Gauge Calibration
The Additel ADT 783-6K is particularly suitable for automatic calibration of digital pressure gauges.
A typical calibration sequence may include:
- Zero pressure
- Increasing pressure points
- Maximum calibration pressure
- Decreasing pressure points
- Return to zero
The pressure controller automatically generates and stabilizes each required reference pressure.
This reduces manual operation and can improve consistency during repetitive calibrations.
Analog Pressure Gauge Calibration
Analog pressure gauges can also be calibrated using the ADT 783-6K as the reference pressure source.
The controller generates stable pressure points while the indication of the analog gauge is evaluated.
For automated visual reading of analog or digital gauges, the ADT783 platform can also be integrated into more comprehensive automated calibration systems.
Pressure Transmitter Calibration
The ADT 783-6K can generate precise reference pressures for pressure transmitter calibration.
Typical devices include:
- Gauge pressure transmitters
- High-pressure transmitters
- Smart pressure transmitters
- Pressure transducers
- Industrial pressure sensors
- Absolute pressure transmitters with the appropriate reference configuration
Remote control capability makes the controller especially useful in automated laboratory systems.
Pressure Sensor Production Testing
The ADT 783-6K is also suitable for production and quality assurance applications.
Pressure sensors can be exposed to predefined pressure sequences as part of an automated test process.
The combination of:
- High pressure capability
- Fast automatic control
- High pressure stability
- Interchangeable reference modules
- Automatic range selection
- Remote communication
makes the system suitable for repetitive production testing.
Remote Operation and Automation
The ADT783 platform is designed for integration into automated calibration and test systems.
Additel provides programming commands for the ADT773, ADT783 and ADT793 controller families.
This allows pressure setpoints and instrument functions to be controlled remotely from compatible software or custom applications.
Modbus Support
The ADT783 platform also supports:
Modbus commands
This enables integration into compatible industrial automation and laboratory control systems.
For custom automated calibration benches, remote pressure setting and data acquisition can therefore be incorporated into a larger software-controlled workflow.
ADT 783-6K vs. ADT 783-3.6K
The most important difference between these two configurations is the maximum pneumatic pressure.
| Feature | ADT 783-3.6K | ADT 783-6K |
|---|---|---|
| Maximum pressure | 3,600 psi | 6,000 psi |
| Maximum pressure | 250 bar | 420 bar |
| Minimum pressure | -0.99 bar | -0.99 bar |
| Pressure type | Gauge | Gauge |
| Gauge/absolute switching | Optional | Optional |
| Control stability | <0.003 % FS | <0.003 % FS |
| Typical stability | 0.001 % FS | 0.001 % FS |
| Control response | <10 s | ≤20 s |
| Internal module bays | 2 | 2 |
| Maximum range ratio | — | 40:1 |
| Maximum supply pressure | 280 bar | 440 bar |
The ADT 783-3.6K is optimized for applications up to 250 bar.
The ADT 783-6K extends the pneumatic pressure capability to 420 bar and is therefore the preferred ADT783 configuration when pressures above 250 bar are required.
ADT 783 Series Overview
The Additel ADT783 series provides several pressure configurations.
| Model | Maximum Pressure | Pressure Type |
|---|---|---|
| ADT 783-D | 35 psi / 2.5 bar | Differential |
| ADT 783-1K | 1,000 psi / 70 bar | Gauge |
| ADT 783-3.6K | 3,600 psi / 250 bar | Gauge |
| ADT 783-6K | 6,000 psi / 420 bar | Gauge |
The ADT 783-6K therefore represents the highest-pressure configuration of the ADT783 series.
Technical Highlights
Model: Additel ADT 783-6K
Device type: Automated Pneumatic Pressure Controller
Maximum pressure: 6,000 psi / 420 bar
Minimum pressure: -14.35 psi / -0.99 bar
Standard pressure type: Gauge
Gauge/absolute switching: Optional
Accuracy: 0.02 % FS, 0.01 % FS or 0.01 % RD depending on module
Precision: 0.01 % FS, 0.007 % FS or 0.008 % RD depending on module
Control stability: <0.003 % FS
Typical control stability: 0.001 % FS
Control response time: ≤20 seconds under specified conditions
Internal pressure module bays: 2
Pressure modules: Additel ADT151
High-pressure module range: CP2K/2KM to CP6K/6KM
Low-pressure module range: CP150/150M to CP6K/6KM
Maximum high-to-low range ratio: 40:1
Range selection: Fixed or Auto
Control modes: Fast, Standard, Custom
Maximum overshoot: <1 % FS
Maximum external load volume: 1,000 ml
Pressure medium: Clean, dry air or nitrogen
Pressure supply: External
Maximum supply pressure: 440 bar
Air source port safe pressure limit: 500 bar
Pressure connection: 1/4 BSP male
Contamination Prevention System: Optional
Remote operation: Yes
Modbus: Supported
Technical Data
| Feature | Additel ADT 783-6K |
|---|---|
| Device type | Automated Pneumatic Pressure Controller |
| Pressure range | -14.35 to 6,000 psi |
| Pressure range | -0.99 to 420 bar |
| Standard pressure type | Gauge |
| Gauge/absolute switching | Optional |
| Accuracy | 0.02 % FS / 0.01 % FS / 0.01 % RD |
| Precision | 0.01 % FS / 0.007 % FS / 0.008 % RD |
| Control stability | <0.003 % FS |
| Typical control stability | 0.001 % FS |
| Response time | ≤20 s |
| Internal module bays | 2 |
| High-pressure modules | CP2K/2KM – CP6K/6KM |
| Low-pressure modules | CP150/150M – CP6K/6KM |
| Maximum range ratio | 40:1 |
| Range selection | Fixed / Auto |
| Control modes | Fast / Standard / Custom |
| Maximum overshoot | <1 % FS |
| Maximum load volume | 1,000 ml |
| Pressure medium | Clean, dry air or nitrogen |
| Pressure supply | External |
| Maximum supply pressure | 440 bar |
| Air source port safe limit | 500 bar |
| Pressure port | 1/4 BSP male |
| CPS | Optional |
| Modbus | Supported |
Typical Applications
The Additel ADT 783-6K Pressure Controller is particularly suitable for:
- High-pressure digital pressure gauge calibration
- Analog pressure gauge calibration
- Pressure transmitter calibration
- Pressure sensor calibration
- Pressure transducer calibration
- Reference pressure instrument calibration
- Automated pressure calibration
- Pneumatic pressure calibration up to 420 bar
- Production pressure testing
- Research and development
- Quality assurance
- Pressure laboratory automation
- Multipoint pressure calibration
- Gauge pressure calibration
- Optional absolute pressure calibration
Typical users include:
- Professional calibration laboratories
- ISO/IEC 17025 calibration laboratories
- Industrial calibration departments
- Pressure instrument manufacturers
- Pressure sensor manufacturers
- Quality assurance departments
- Research laboratories
- Production test facilities
- Automated test system operators
Calibration and Service by europascal
High-performance pressure control depends on reliable and traceable reference pressure measurement.
The interchangeable ADT151 pressure modules should therefore be included in the calibration strategy according to the pressure ranges actually used.
If the optional atmospheric reference module is installed for gauge-to-absolute pressure switching, this reference should also be considered within the calibration concept.
The europascal calibration service provides professional calibration solutions for pressure controllers, reference pressure modules, digital pressure gauges, pressure transmitters, pressure sensors and other pressure measuring equipment.
europascal can also support customers in selecting suitable ADT151 modules, pressure ranges, high-pressure accessories and system configurations for the ADT 783-6K.
Why Choose the Additel ADT 783-6K?
The Additel ADT 783-6K Precise Pressure Controller combines automatic pneumatic pressure control from approximately -0.99 to 420 bar with interchangeable ADT151 reference pressure modules and outstanding pressure control performance.
Depending on the selected pressure module, accuracy options extend from 0.02 % FS through 0.01 % FS to high-performance configurations reaching 0.01 % RD.
Pressure control stability is specified at <0.003 % FS, with typical performance of 0.001 % FS. Even at pressures up to 6,000 psi, the controller provides a specified response time of ≤20 seconds under Additel’s defined test conditions.
Two interchangeable internal pressure module bays, a maximum high-to-low range ratio of 40:1, automatic range selection, optional gauge-to-absolute pressure switching, remote operation and Modbus support make the ADT 783-6K a powerful solution for professional high-pressure calibration laboratories and automated pressure test systems.
Looking for an automated pneumatic pressure controller capable of reaching 420 bar? Contact europascal for expert advice on the Additel ADT 783-6K, suitable ADT151 pressure modules, high-pressure accessories and professional calibration services.
Further Additel pressure controllers and calibrators from europascal can be found here.
Professional pressure calibration services from europascal can be found here.
Manufacturer information about the Additel ADT 783 can be found on the official Additel website.
