A portable measuring arm is a good investment. The time required to train users is minimal – even unpracticed personnel will produce reliable measuring results in a short time due to the user-friendliness of the ROMER Absolute Arm. Inspection and control throughput is increased dramatically, and because the ROMER Absolute Arm helps to ensure quality, there is a fast return on investment. Increase productivity and minimise off-spec production – in the long term and with absolute efficiency.

 

ROMER Feature Packs
ROMER Feature Packs unfold the full potential of a portable measuring arm. These optional feature packs utilise the ROMER Feature Pack Port interface. All extensions are perfectly coordinated with the ROMER Absolute Arm and are part of an integrated system.

The ROMER Mobility Pack includes a battery and WiFi communication – maximum flexibility for the ROMER Absolute Arm.

The ROMER Scanning Pack is the interface for laser scanners. They connect directly to the arm.

Feature packs are thermally and mechanically stable, easy to exchange for the user and open for new technologies and additional accessories.

ROMER Feature Pack Port for data communication
The ROMER Absolute Arm has a specific standard for data communication. If required, with the ROMER Feature Pack Port interface, the Absolute Arm can be used as a fully wireless CMM.

RDS – the ROMER tool for software integration
RDS is the virtual image of a ROMER measuring arm. This software with its intuitive operation facilitates probe calibration and includes a diagnosis function for checking the measuring accuracy of the arm in compliance with international standards.

ROMER ergonomics - accuracy made easy
Carbon fibre structure. Absolute operational safety with SpinGrip and a handle with incorporated mouse function. Illumination of the part and an integrated digital camera are available upon request. Overall weight only 7.7 kg/17 lbs (2.5 m/8.2 ft. arm). The ROMER Absolute Arm is an all-round balanced measuring instrument. Its operation is a matter of routine after only a few hours, even in locations where traditional CMMs would never perform.

Infinite Rotation
ROMER’s patented infinite rotation of the principal axes allows a comfortable inspection of hard-to-reach areas.

Integrated Zero-G counterbalance
An optimized counterbalance reduces operator fatigue and delivers effortless control in all positions, including above and below the centreline.

Specifications

73 series	Model	Measuring Range	Point Repeatability	Volumetric Accuracy	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.	+/- 0.065 mm / 0.0026 in.	+/- 0.095 mm / 0.0037 in.	8.0 kg / 17.6 lbs
	7335	3.5 m / 11.5 ft.	+/- 0.095 mm / 0.0037 in.	+/- 0.130 mm / 0.0051 in.	8.3 kg / 18.3 lbs
	7340	4.0 m / 13.1 ft.	+/- 0.120 mm / 0.0047 in.	+/- 0.149 mm / 0.0059 in.	8.6 kg / 19.0 lbs
	7345	4.5 m / 14.8 ft.	+/- 0.150 mm / 0.0059 in.	+/- 0.170 mm / 0.0067 in.	8.9 kg / 19.6 lbs

 

75 series	Model	Measuring Range	Point Repeatability	Volumetric Accuracy	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.	+/- 0.033 mm / 0.0013 in.	+/- 0.049 mm / 0.0019 in.	8.3 kg / 18.3 lbs
	7535	3.5 m / 11.5 ft.	+/- 0.043 mm / 0.0017 in.	+/- 0.061 mm / 0.0024 in	8.6 kg / 19.0 lbs
	7540	4.0 m / 13.1 ft.	+/- 0.061 mm / 0.0024 in.	+/- 0.075 mm / 0.0030 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 and VDI/VDE 2617-9

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.

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: 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.