OFV-551 Fiber-Optic Interferometer  - Technical Data

Vibrometer Optics Specifications

Laser wavelength	633 nm, visible red laser beam
Laser protection class	Class II He-Ne laser, < 1 mW, eye-safe
Available fiber lengths	1000 mm, 2000 mm, 2069 mm (OFV-551), 3000 mm
Characteristics
Sensor Head	Mini sensor1)	OFV-1022)	OFV-130-32)	OFV-130-52)
Focal length                              mm	16	20	60	80
Min. stand-off distance             mm	60	80	55 ± 2	76 ± 2
Aperture diameter 1/e²             µm	3.2	4	16	16
Spot Size (typ.)                         µm
@ 55 mm	-	-	3	-
@ 76 mm	16	-	-	4
@ 100 mm	20	21	-	-
@ 300 mm	66	51	-	-
@ 1000 mm	223	180	-	-
@ each additional meter plus	211	180	-	-
Coherence Properties
Sensor head		Maxima of Visibility
OFV-551		135 mm +  n · 204 mm;  n = 0; 1; 2; ...
OFV-552 (differential measurement)		0 mm +  n · 204 mm
OFV-552 (single point measurement) 3)		63 mm +  n · 204 mm

General Specifications

Ambient temperature	+0 °C … +40 °C
Storage temperature	-15 °C … +65 °C
Relative humidity	20 % … 80 %, non-condensing
Housing protection	IP 40 standard (NEMA 1)
Dimensions	235 mm x 355 mm x 140 mm
Weight	8 kg
Power	max. 15 W