System Specifications:
The Triple-Beam Interferometer SP 5000 TR offers a measuring range from 0 m to ≥8 m with a standard reflector and up to ≥20 m with a long-range reflector. It provides a resolution of 20 pm, with angular measuring ranges of ±12.5° using a reflector and ±430 µrad with a plane mirror (recommended distance ≤2 m). The angular resolution is 0.01 µrad.

Optional Roll Angle Measurement:
The system can optionally measure roll angles with the RAS 175 W sensor, offering a measuring range of ±17.5 mrad and a resolution of 0.9 µrad.

Measurement Uncertainty:
Under stable conditions, the length measurement uncertainty is 0.15 µm/m, angle measurement uncertainty is ±0.04% ± 0.04 μrad, and roll angle measurement uncertainty is ±2.4 µrad ±0.5% (19°C – 21°C) or ±2.4 µrad ±1.5% (15°C – 25°C).

Physical and Operational Characteristics:
The beam distances are 12 mm horizontally and vertically, with a wavelength of 632.8 nm. The HeNe laser has a frequency stability of 2·10-8 after a warm-up time of 10 to 20 minutes. The operating temperature range is 15 to 30°C, and the maximum displacement speed of the measuring reflector is 3 m/s.

Geometric Data:
The sensor head with adjustable mount measures 202 x 137 x 72 mm and weighs 1.9 kg. The reflector is 45 x 45 x 20 mm and weighs 80 g. The electronic evaluation and supply unit (EU) measures 450 x 400 x 150 mm and weighs approximately 8 kg. The optional roll angle sensor RAS 175 W measures 74 x 54 x 77 mm and weighs 425 g.

Electrical Data:
The system includes standard RS232C and USB interfaces, with other interfaces available on request. The cable length between the sensor head and electronics unit is 6 m, with other lengths available on request. The power supply requirement is 100 to 240 VAC / 47 to 63 Hz.

Safety and Compliance:
The laser safety class is 2M according to EN 60825-1:2014 and ANSI Z136.1 (CDRH). For legal reasons, some devices have a resolution limited to 0.3 nm, marked with an “X” on the type label.

Note: Specifications are subject to change as of October 2026.