ROMER Absolute Arm

Absolutely valuable

A first in the world of portable measuring arms: The ROMER Absolute Arm features absolute encoders and is therefore the first measuring arm which does not require referencing before measurement. When the arm is turned on, it's ready to go.

Quality control, inspection, on-machine verification, reverse engineering, virtual assembly or 3D modelling. Wherever these needs arise, you will find the ROMER Absolute Arm. Much more than just a metrology tool, its value lies in its versatility. Portability, stability, light weight and high-performance laser scanners make the ROMER Absolute Arm an all-purpose 3D measurement, analysis and digitising tool that can be used by anyone, anywhere and with minimum training.

Unlike many metrology devices, the ROMER Absolute Arm does not require warm-up time or initialization, thanks to a stable carbon fiber structure and industry leading Absolute encoders. Simply take the measuring arm to the part, switch it on and start measuring.

All models of the ROMER Absolute Arm are available in three levels of accuracy, allowing you to select the right measuring arm for your application requirements and budget. The 73 Series and 75 Series arms offer excellent price/performance ratios for everyday metrology operations, while the 77 Series – the most accurate ROMER Absolute Arm ever produced – is ideal for specialist or high-end measurement applications.

Increasing productivity across all industries.

 Typical Industries:  Typical Measuring Applications:
 Automotive  Sheet Metal Parts
 Aerospace  Dies & Molds/Tooling
 Power Generation / Wind Energy  Machined Parts
 Forming Industry  Jigs & Fixture setup and alignment
 Casting Industry  Tubes & Tube Assembly
 Fabricated metal products  CAD-to-Part comparison
 Machinery Manufacturing  Alignment
 Sports Equipment  Reverse Engineering
 Piping & Tubing  Virtual Assembly
 Agriculture & Heavy Equipment  Body in White
 Ship and Boat building  On-machine tool inspection
 Railway  Composites inspection
 Archaeological and Historic Preservation  Die-Casting and Patterns

Romer Absolute Arm OVERVIEW

Portable measuring arms allow you to take measurements directly in the manufacturing environment, where process improvements are the most beneficial.

About you
About your company
RDS
The ROMER proprietary software RDS features SMART technology, allowing total management of checks in the field as well as temperature and shock monitoring.

Laser Scanning
The ROMER Absolute Arm is available with a completely integrated high-performance laser scanner or the external HP-L-20.8 scanner, for complex scanning tasks.
ROMER Absolute Arms are the only scanning systems on the market to offer  fully verifiable scanning system accuracy.

Automated & repeatable Probe Recognition
Intelligent Quick Change Probes: Swap touch-probes at any time without the need to recalibrate. The Romer Absolute Arm’s repeatable mount allows to change probes on the fly, according to your measurement needs.

Instant Feedback
The ROMER Absolute Arm provides immediate acoustic and haptic feedback to the operator, allowing the Romer Absolute Arm to be used in even the most harsh industrial environments.

Absolute Encoders
Referencing and warm-up time was for yesterday – just switch the arm on and measure.

Measurement Volume
Size does matter: The ROMER Absolute Arm is available in seven lengths between 1.2 m and 4.5 m.

Certification
All ROMER Absolute Arms including scanning systems pass through B89.4.22 certification. Additional certifications according to VDI/VDE 2617-9 are also available. The ROMER Absolute Arm Compact model is available with a choice of ISO 10360-2 or B89.4.22 certification.

Zero G
Zero G counterbalance eliminates torque in the base and arm members, more forgiving of the arm being mounted in a vertical position and puts you in control of the arm.

SmartLock
If the Romer Absolute Arm is not in use it can be locked safely into its rest position. SmartLock also allows the arm to be fixed in any intermediate position.

Feature Packs
Thanks to easily interchangeable Feature Packs, the functionality of the Romer Absolute Arm can always be enhanced. Feature packs are available for wi-fi comunication, wi-fi scanning capability and full battery operation.

Specifications
73 series Model Measuring Range Point Repeatability 1 Volumetric Accuracy 2 Arm Weights
7312 1.2 m / 3.9 ft.  0.014 mm / 0.0006 in. ± 0.025 mm / 0.0010 in. 10.2 kg / 22.5 lbs
7320 2.0 m / 6.6 ft. 0.030 mm / 0.0012 in. ± 0.042 mm / 0.0017 in. 7.4 kg / 16.3 lbs
7325 2.5 m / 8.2 ft. 0.038 mm / 0.0015 in. ± 0.051 mm / 0.0020 in. 7.7 kg / 17.0 lbs
7330 3.0 m / 9.8 ft. 0.059 mm / 0.0023 in. ± 0.075 mm / 0.0030 in. 8.0 kg / 17.6 lbs
7335 3.5 m / 11.5 ft. 0.079 mm / 0.0031 in. ± 0.100 mm / 0.0039 in. 8.3 kg / 18.3 lbs
7340 4.0 m / 13.1 ft. 0.099 mm / 0.0039 in. ± 0.125 mm / 0.0049 in. 8.6 kg / 19.0 lbs
7345 4.5 m / 14.8 ft. 0.120 mm / 0.0047 in. ± 0.150 mm / 0.0059 in. 8.9 kg / 19.6 lbs

 

75 series Model Measuring Range Point Repeatability1 Volumetric Accuracy2 Arm Weights
 7512 1.2 m / 3.9 ft  0.010 mm / 0.0004 in.  ± 0.020 mm / 0.0008 in  10.8 kg / 23.8 lbs
7520 2.0 m / 6.6 ft. 0.016 mm / 0.0006 in. ± 0.023 mm / 0.0009 in. 7.7 kg / 17.0 lbs
7525 2.5 m / 8.2 ft. 0.020 mm / 0.0008 in. ± 0.029 mm / 0.0011 in. 8.0 kg / 17.6 lbs
7530 3.0 m / 9.8 ft. 0.030 mm / 0.0012 in. ± 0.044 mm / 0.0017 in. 8.3 kg / 18.3 lbs
7535 3.5 m / 11.5 ft. 0.040 mm / 0.0016 in. ± 0.057 mm / 0.0022 in. 8.6 kg / 19.0 lbs
7540 4.0 m / 13.1 ft. 0.055 mm / 0.0022 in. ± 0.069 mm / 0.0027 in. 8.9 kg / 19.6 lbs
7545 4.5 m / 14.8 ft. 0.070 mm / 0.0028 in. ± 0.082 mm / 0.0032 in. 9.2 kg / 20.3 lbs


77 series Model Measuring Range Point Repeatability11 Volumetric Accuracy2 Arm Weights
7725 2.5 m / 8.2 ft. 0.017 mm / 0.0007 in. +/- 0.026 mm / 0.0010 in. 8.0 kg / 17.6 lbs
7730 3.0 m / 9.8 ft. 0.026 mm / 0.0010 in. +/- 0.040 mm / 0.0016 in. 8.3 kg / 18.3 lbs
7735 3.5 m / 11.5 ft. 0.034 mm / 0.0013 in. +/- 0.051 mm / 0.0020 in. 8.6 kg / 19.0 lbs
7740 4.0 m / 13.1 ft. 0.047 mm / 0.0019 in. +/- 0.062 mm / 0.0024 in. 8.0 kg / 17.6 lbs
7745 4.5 m / 13.5 ft. 0.060 mm / 0.0024 in. +/- 0.074 mm / 0.0029 in. 9.2 kg / 20.3 lbs

All Specifications according to B89.4.22 and VDI/VDE 2617-9

1 The Point Repeatability Test is the reference test to determine measurement arm repeatability with ball probe. The cone is in front of the machine. Points are measured from multiple approach directions. The average point and the deviation of each point to the average center are calculated. The result is the maximum range divided by two.

2 The Volumetric Accuracy Test most accurately represents the reasonable expectations for machine performance in practical measuring applications since it involves measuring a certified length standard many times in several locations and orientations and compares the resultant measurements to the actual length. The Volumetric Length Accuracy Test is the most appropriate test for determining machine accuracy and repeatability. The result is the maximum deviation of the measuring distance less the theoretical length.

Ambient conditions
Working temperature: 0C - 50°C (32°F - 122°F)
Storage temperature: -30° -70 C (-22°F - 158°F)
Relative humidity: 10% - 90% non-condensing
Operational elevation: 0-2000 m (0-6600 ft)

Marks of conformity
CE Compliance: Yes

Power requirement
Universal worldwide voltage 110V-240V

All probing specifications are achieved with a ROMER Absolute Arm mounted on a ROMER base plate or magnetic base and using a 15 mm steel ball probe with a length of 50 mm under stable environmental conditions.

ROMER Absolute Arm Brochure
ROMER Absolute Arm 77 Series Brochure
ROMER Absolute Arm overview brochure
ROMER VDI/VDE Specifications
ROMER product catalogue
ROMER Tube Inspection factsheet
Case Study - Johnson Controls, Slovenia
Case Study Bombardier - Bautzen
Application Report - PCT
Application Report - Strata Manufacturing PJSC
KYB - Ororbia, Spain

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