Additel ADT 997 is a powerful handheld hydraulic pressure test pump designed for professional pressure calibration up to 10,000 psi / 700 bar. Its dual-stage piston system, lever-type pressurization and precise fine adjustment combine efficient high-pressure generation with the portability required for field calibration.

With a weight of only approximately 4.19 lb / 1.9 kg, the Additel ADT 997 provides an impressive pressure capability in a compact handheld design. It is suitable for calibrating pressure gauges, digital pressure gauges, pressure transmitters, pressure transducers, pressure sensors and other hydraulic pressure measuring instruments.

Unlike pneumatic pumps such as the Additel ADT 992 and ADT 993, the ADT 997 uses a hydraulic pressure medium. Additel specifies compatibility with several media, including hydraulic oil, mineral oil, transformer oil, alcohol, antifreeze and deionized water. This provides considerable flexibility when the pressure medium must be adapted to the application or device under test.

A dual-stage pre-pressure piston enables higher hydraulic pressures to be generated with reduced operating effort. Lever-type pressurization allows pressure to be built efficiently, while the integrated fine adjustment screw enables precise setting of individual calibration points.

At europascal, the Additel ADT 997 complements a comprehensive range of professional pressure generation and calibration equipment. In addition to supplying Additel pressure calibration technology, europascal provides accredited calibration services for pressure and other measurement quantities. Find more information about professional calibration and metrological traceability at the europascal Calibration Service.

Your Benefits at a Glance

The Additel ADT 997 combines high hydraulic pressure generation with excellent portability and flexible operation.

Key advantages include:

• Hydraulic pressure generation up to 10,000 psi / 700 bar
• Compact handheld design
• Dual-stage pre-pressure piston
• Higher pressure generation with reduced operating effort
• Lever-type pressurization
• Fast pressure generation and stabilization
• Fine adjustment screw
• Adjustment resolution down to 100 Pa / 1 mbar
• Maximum load volume of 100 ml
• Maximum fine adjustment volume of 1.5 ml
• Multiple operating positions
• Horizontal or vertical operation
• Adjustable reference port
• Dual rubber grips
• Hand-tight quick connection system
• Integrated filtration
• Compatible with different hydraulic media
• Stainless steel ram and adapters
• Low maintenance requirements
• Weight of only approximately 1.9 kg
• Completely manual operation
• No electrical power required
• Suitable for laboratory and field calibration

Hydraulic Pressure Generation up to 700 bar

The Additel ADT 997 generates hydraulic pressure up to:

10,000 psi / 700 bar.

This pressure capability makes the pump suitable for a wide range of industrial pressure calibration applications.

Typical devices under test include:

• Mechanical pressure gauges
• Digital pressure gauges
• Hydraulic pressure gauges
• High-pressure gauges
• Pressure transmitters
• Pressure transducers
• Pressure sensors
• Precision pressure indicators
• Industrial hydraulic instruments

Despite its 700 bar maximum pressure, the ADT 997 remains compact enough for portable field use.

Dual-Stage Piston System

One of the key features of the Additel ADT 997 is its dual-stage pre-pressure piston.

Generating several hundred bar manually can require considerable physical effort with a conventional hydraulic hand pump.

The dual-stage piston concept is designed to generate higher pressure with less effort.

This provides an important advantage for technicians who regularly perform pressure calibrations in the field.

The operator can efficiently fill and pressurize the connected hydraulic system before using the fine adjustment mechanism to precisely approach the required calibration point.

Efficient Lever-Type Pressurization

The Additel ADT 997 uses lever-type pressurization.

This design provides efficient pressure generation and allows the connected hydraulic system to be brought to the approximate calibration pressure quickly.

Once the approximate pressure has been generated, the fine adjustment screw is used to accurately approach the desired calibration point.

The combination of coarse pressure generation and fine adjustment provides both speed and precise control.

Precise Fine Adjustment

The Additel ADT 997 incorporates a fine adjustment screw for controlled pressure setting.

The specified adjustment resolution is:

100 Pa / 1 mbar.

The maximum volume available for fine adjustment is:

1.5 ml.

This enables the operator to smoothly increase or decrease the hydraulic pressure when approaching individual calibration points.

Fine pressure adjustment is particularly important when working with:

• High-resolution digital pressure gauges
• Precision reference pressure instruments
• Pressure transmitters
• Pressure transducers
• High-pressure sensors

After reaching the required pressure, sufficient stabilization time should be allowed before recording measurement values.

Maximum Load Volume of 100 ml

The Additel ADT 997 supports a maximum load volume of:

100 ml.

The connected load volume includes the internal volume of the device under test, reference instrument, pressure hose and adapters.

The 100 ml maximum load volume provides substantial flexibility for a portable hydraulic pressure pump.

For efficient pressure generation and stabilization, unnecessary hose lengths and additional hydraulic volumes should nevertheless be minimized whenever possible.

Flexible Choice of Pressure Medium

A major advantage of the Additel ADT 997 is its compatibility with different hydraulic pressure media.

Additel specifies compatibility with:

• Hydraulic oil
• Mineral oil
• Transformer oil
• Alcohol
• Antifreeze
• Deionized water

Other pressure media should be discussed with Additel before use.

This flexibility allows the pump to be adapted to different devices under test and industrial applications.

Before connecting an instrument, the user should always verify that the device under test, adapters, seals and complete hydraulic calibration system are compatible with the selected pressure medium.

Cross-contamination between different pressure media should also be avoided.

Multi-Position Operation

The Additel ADT 997 is designed for flexible operation in different working positions.

The pump can be operated in:

• Horizontal orientation
• Vertical orientation
• Tilt-head configuration

The adjustable reference port and dual rubber grips support these different operating positions.

This provides an important advantage for field calibration, where the available workspace may be limited and the pump cannot always be positioned on a conventional laboratory bench.

Designed for Field Calibration

Portability is one of the key characteristics of the Additel ADT 997.

The pump measures approximately:

385 × 166 × 128 mm.

Its weight is only approximately:

4.19 lb / 1.9 kg.

This combination of compact dimensions and 700 bar pressure capability makes the ADT 997 particularly suitable for mobile pressure calibration.

No electrical power supply or batteries are required.

The pump can therefore be used independently in locations where electrical power is unavailable or inconvenient.

Typical field applications include:

• Industrial maintenance
• Mobile calibration services
• Commissioning
• Plant maintenance
• On-site pressure gauge calibration
• Troubleshooting
• Preventive maintenance

Hand-Tight Quick Connectors

The Additel ADT 997 incorporates a connection concept designed to simplify installation and replacement of devices under test.

The supplied hose uses hand-tight quick connectors.

This allows compatible instruments to be connected without conventional tools and helps prevent leakage when changing devices under test.

For calibration technicians who need to test several instruments consecutively, the hand-tight connection system can significantly simplify the workflow.

Integrated Filtration

The Additel ADT 997 incorporates filters at several points in the pressure generation system.

According to Additel, these include:

• 150 µm quick-removal filter at the standard port
• 100 µm quick-removal filter at the pump intake
• 150 µm quick-release filter at the pressure outlet

The removable filter design simplifies maintenance and inspection.

Keeping the hydraulic pressure medium clean helps protect the internal pump mechanism as well as connected reference instruments and devices under test.

Professional Comparison Calibration

The Additel ADT 997 provides the hydraulic pressure source required for professional comparison calibration.

A typical setup consists of:

Additel ADT 997 + Reference Pressure Instrument + Device Under Test

The ADT 997 generates the hydraulic pressure.

A suitable reference pressure instrument provides the traceable pressure value.

The reference instrument and device under test are exposed to the generated pressure.

The operator initially generates the approximate pressure using the lever mechanism.

The fine adjustment screw is then used to precisely approach the desired calibration point.

After sufficient stabilization, the indication of the device under test is compared with the reference pressure value.

This procedure can be repeated at several increasing and decreasing pressure points according to the applicable calibration method.

Pressure Gauge Calibration

The Additel ADT 997 is particularly suitable for hydraulic pressure gauge calibration up to 700 bar.

Typical devices include:

• Mechanical pressure gauges
• Digital pressure gauges
• High-pressure gauges
• Hydraulic pressure gauges
• Precision pressure indicators
• Industrial pressure measuring instruments

The ADT 997 generates the required pressure but does not itself provide the traceable reference pressure value.

For professional calibration, the pump must therefore be combined with an appropriate reference pressure gauge or pressure calibrator.

The achievable measurement uncertainty depends on the complete calibration system, including the reference instrument, pressure stability, pressure medium, environmental conditions, calibration procedure and all relevant uncertainty contributions.

Pressure Transmitter and Transducer Calibration

The Additel ADT 997 can also provide the hydraulic pressure source for calibrating pressure transmitters and transducers.

A suitable reference pressure instrument measures the applied hydraulic pressure.

At the same time, the electrical output of the device under test can be measured using an appropriate process calibrator or precision electrical measuring instrument.

Several increasing and decreasing pressure points can be generated to evaluate parameters such as:

• Measurement deviation
• Repeatability
• Hysteresis
• Zero behavior
• Span behavior

For industrial transmitters with a 4 to 20 mA output, the relationship between applied pressure and output current can therefore be evaluated across the measurement range.

Durable Construction

The Additel ADT 997 is designed for professional laboratory and field use.

The ram and adapters are manufactured from:

stainless steel.

The pump body combines:

stainless steel, aluminum and UPVC.

Seal materials include:

Buna-N, PTFE and copper alloy.

Additel designed the pump for rugged operation while maintaining low leakage and low maintenance requirements.

This construction provides a combination of durability and portability suitable for professional calibration applications.

Technical Highlights

Additel ADT 997 vs. Additel ADT 993

The Additel ADT 997 and Additel ADT 993 are both modern handheld pressure pumps designed for mobile professional calibration.

However, they are intended for fundamentally different pressure applications.

The Additel ADT 993 is a pneumatic pump using air as its pressure medium.

Its pressure range extends from:

95% vacuum to 1,000 psi / 70 bar.

The Additel ADT 997 is a hydraulic pump and generates pressure up to:

10,000 psi / 700 bar.

The ADT 997 therefore provides ten times the maximum positive pressure of the ADT 993.

The ADT 993 is particularly suitable for clean pneumatic calibration applications and devices that must not be contaminated with hydraulic liquids.

The ADT 997 is designed for substantially higher-pressure applications where a compatible hydraulic pressure medium can be used.

Additel ADT 997 vs. Additel ADT 928A

Both the Additel ADT 997 and Additel ADT 928A are hydraulic pressure pumps for professional high-pressure calibration.

However, they follow different design concepts.

The ADT 997 is optimized for portable handheld operation and generates pressure up to:

10,000 psi / 700 bar.

The Additel ADT 928A is a larger hydraulic pump capable of generating pressures up to:

15,000 psi / 1,000 bar.

For applications where maximum pressure capability is the primary requirement, the ADT 928A provides the higher range.

For mobile applications requiring hydraulic calibration up to 700 bar, the compact and lightweight Additel ADT 997 provides an attractive alternative.

Accessories for the Additel ADT 997

Additel offers accessories for adapting the ADT 997 to different calibration applications.

Available accessories include:

• Additel ADT 102 adapter and fitting set
• Additel ADT 103 hand-tight adapter and fitting set
• Dedicated carrying case
• Replacement and maintenance accessories
• Additional hand-tight quick connectors

The ADT 102 adapter set contains various male and female connection adapters.

The ADT 103 set provides various female hand-tight quick connectors for commonly used pressure connections.

The ADT 997 can also be ordered as a SET configuration including the pump and carrying case.

Typical Applications

The Additel ADT 997 is suitable for:

• Hydraulic pressure calibration
• Pressure calibration up to 700 bar
• Pressure gauge calibration
• Digital pressure gauge calibration
• High-pressure gauge calibration
• Pressure transmitter calibration
• Pressure transducer calibration
• Pressure sensor calibration
• Comparison pressure calibration
• Field calibration
• Mobile calibration services
• Industrial maintenance
• Plant maintenance
• Commissioning
• Calibration laboratories
• Process instrumentation
• Research and development
• Pressure metrology

Why Choose the Additel ADT 997?

The Additel ADT 997 combines hydraulic pressure generation up to 10,000 psi / 700 bar with the portability of a modern handheld calibration pump.

Its dual-stage pre-pressure piston is designed to generate higher pressures with reduced operating effort, while lever-type pressurization enables efficient pressure generation and rapid stabilization.

The integrated fine adjustment screw provides an adjustment resolution down to 100 Pa / 1 mbar, allowing individual calibration points to be approached accurately.

A maximum load volume of 100 ml provides considerable flexibility when connecting reference instruments, devices under test, hoses and adapters.

Compatibility with hydraulic oil, mineral oil, transformer oil, alcohol, antifreeze and deionized water allows the pressure medium to be selected according to the requirements of the application.

Multiple operating positions, an adjustable reference port and dual rubber grips make the pump especially convenient for field calibration.

Despite its maximum pressure of 700 bar, the ADT 997 weighs only approximately 1.9 kg, making it an excellent solution for technicians who need to perform high-pressure hydraulic calibration at different locations.

At europascal, we provide Additel pressure generation and calibration technology for professional laboratory, industrial and field applications. Our portfolio includes hydraulic and pneumatic pressure pumps, digital pressure gauges, pressure calibrators, pressure modules and automated pressure calibration solutions.

For professional calibration and metrological traceability of pressure measuring instruments, visit the europascal Calibration Service.

Further Additel products are available from europascal.

Manufacturer information about the Additel ADT 997 is available on the official Additel website.

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