Absolute Arm - 6 Axis

The ROMER Absolute Arm is the latest ROMER innovation. Drawing inspiration and resources from the entire Hexagon Metrology product family, and all ROMER arms that came before, The ROMER Absolute Arm is the lightest, most accurate, most flexible ROMER arm ever. Portable metrology devices not only need to be accurate, they must be reliable in less than favorable production conditions. The technologies used to build every Absolute Arm are chosen based on the experience of thousands of units in the field that are required to perform accurately, every time. The accuracy of a portable arm is, in fact, the sum of its parts.

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Features

Patented Infinite Rotation in the principle axes allows access to difficult to reach areas, while avoiding damaging the arm against rotational hard stops.
Kinematic Probe Joint, the same type used in Hexagon Metrology bridge CMMs, provides repeatable connection of probes, with no need for recalibration. Automatic probe recognition allows you to store hundreds of calibrated probe profiles for instant recall.
Compact Head is easy to hold, and is used to inspect parts or to interact with the software when in "mouse mode". Integrated work light and digital camera to graphically document setups.
Patented SpinGrips are infinitely rotating, low-friction "approved" hand hold positions for better user ergonomics. SpinGrips allow the arm to "float" in the operator's hands, reducing stress on the arm thus maximizing accuracy and repeatability while minimizing user fatigue.
Absolute Encoders improve overall accuracy and eliminate all complicated "homing" procedures.
Aerospace grade Carbon Fiber Tubes provide a lightweight, stiff structure that is thermally stable.
Low Profile Zero-G Counterbalance balances the arm's weight for easy, operation with effortless control, even above and below the arm's centerline. Better ergonomics means lower operator fatigue and better measuring results.
Integrated handle and lifting point under counterbalance allow for easy carrying.
Feature Packs plug into the base and provide interchangeable and upgradeable add-on capabilities such as WiFi connection, battery power, and more.
Universal thread mount base attaches to a variety of available base and stand options including magnetic bases.

Feature Pack Options for 6-Axis Absolute Arms:

Mobility Pack: A rechargeable battery and WiFi transmitter allows completely wireless use of the Absolute Arm.
"No Pack" Option: The Absolute Arm is completely functional without a feature pack, using a 110/220v power connection.

Configurations

The ROMER Absolute Arm 73 and 75 series offer two different levels of performance and features to suit most inspection requirements.

	73-Series	75-Series
Absolute Encoders	Included	Included
Zero-G Counterbalance with Lock	Included	Included
SpinGrips	N/A	Included
TESA TKJ Connector	Included	Included
3 TESA Hard Probes	Included	Included
Feature Pack	Optional	ROMER Mobility Pack
Digital Camera	N/A	Included
LED Worklight	N/A	Included
Certified Calibration Sphere	Included	Included
NIST Traceable Length Standard Bar	Optional	Included
Hard Case	Included	Included
Dust Cover	Included	Included
Base	Bolt-down base plate	Magnetic
Travel Case	Included	Included
Application Software	PC-DMIS Portable	PC-DMIS Portable
Utility Software	RDS	RDS

Technical Specifications

6-Axis ROMER Absolute Arm Probing Specifications – 73 series

Model³	Measuring Range	Probing Point Repeatability¹	Probing Volumetric Accuracy²	Arm Weights
7315	1.5 m / 4.9 ft.	± 0.025 mm / 0.0010 in.	± 0.037 mm / 0.0015 in.	7.1 kg / 15.6 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.

6-Axis ROMER Absolute Arm Probing Specifications – 75 series

Model	Measuring Range	Probing Point Repeatability¹	Probing Volumetric Accuracy²	Arm Weights
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.

All specifications according to B89.4.22.

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 is the most representative test for volume measurement accuracy. A gage block with a known and certified length is measured several times throughout the working volume. This gage block is installed in different positions and measured depending on multiple approach directions. The result is the maximum deviation of the measuring distance less the theoretical length.

Ambient conditions:

Working temperature: 0°C - 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.

All CMS 108 scanning specifications are achieved with a ROMER Absolute Arm mounted on a ROMER base plate or magnetic base and using CMS 108 zoom setting 2A (mid range scan width 60 mm and point spacing 0.03 mm) and a matte grey calibration sphere 25.4mm diameter under stable environmental conditions.

All RS1 scanning specifications are achieved with a ROMER Absolute Arm mounted on a ROMER base plate or magnetic base and a matte grey calibration sphere of 25.4 mm diameter under stable environmental conditions.

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In North America, Schedule Online to arrange a demonstration or call 800.218.7125.