Application:

   Testing the Location, distribution, direction, and diameter of the rebar and the thickness of concrete cover in concrete structure projects such as bridges, tunnels, walls etc. Detecting Ferro magnets in non-ferromagnetic media;
   Evaluating the quality of construction;
   Evaluating the integrity and the durability of existing structures;
   Testing the quantity of rebar when evaluating and developing the old structure;
   Testing the distribution and direction of electric cables and plumbing inside walls and floors.

Model		ZBL-R800	ZBL-R660	ZBL-R630A	ZBL-R630	ZBL-R620
Protective layer thickness range (mm)		φ6～φ50	φ6～φ50	φ6～φ50	φ6～φ50	φ6～φ50
Max range（mm）	First range	3～98	1～80	3～98	6～90	6～90
	Second range	3～196	1～180	3～196	10～180	10～180
Max allowed error	±1（mm）	3～79	1～59	3～79	6～79	6～79
	±2（mm）	57～119	50～78	57～119	60～119	60～119
	±4（mm）	70～196	70～180	70～196	70～180	70～180
Applicable range（mm）		φ6～φ50	φ6～φ32	φ6～φ50	φ6～φ32	φ6～φ32
Max allowed error for diameters measurement		±1
Common type		ü
Closely bars type		ü
Transverse section bars		ü				×
Grid type		ü				×
Scan range		Borderless
Data correction		Automatic		Manually		×
Data transfer		U disk	Wi-Fi/USB	U disk	USB
Wireless transfer		ü	ü	ü	×
LCD		160×128	320×240	160×128
Power		Built-in battery				DC:9V 5 batteries
Size (mm）		212×134×50	240×93×110	212×134×50	190×135×52
Weight（kg）		0.9	0.67	0.9	0.9	0.7