Selection and comparison of several domestic (CN) magnetic metal substrate Thickness Gauges

There are also many brands of Thickness Gauges in domestic brands. This article mainly introduces several domestic magnetic metal substrate Thickness Gauges with a film thickness range of 0-1500μm, including EC-770 from Yuwen, WH-81 from Weifu, Haibao Instrument HC-210.

The detailed technical parameters comparative analysis are shown in the table below:

Model comparison
Compare category	Dry Film Thickness Gauge	EC-770	WH-81 (single iron base)	HC-210
product picture
brand		Yu asked	Weaver	Hypertherm Instruments
place of origin		CHINA	CHINA	CHINA
Measuring principle		Electromagnetic induction eddy current	Electromagnetic induction	Electromagnetic induction
Test substrate		Magnetic metal Non-magnetic metal	magnetic metal	magnetic metal
Film thickness range		0-1500μm	0-1500μm	0-1500μm
error percentage		3%	3%	1% 2% 3%
Specification comparison
Measuring principle		Electromagnetic induction/eddy current	Electromagnetic induction	Electromagnetic induction
Measuring range (μm)		0~1300	0~1250	0~1250
tolerance scope		±(3% of reading+2um)	±(1+3%);±(1+3%H)	±(3%H+1);±[(1~3%H)+1]
Minimum base diameter (mm)		6.0	10.0	7.0
Minimum curvature (mm)		Convex 1.5/Concave 25	Convex:5/Concave:5	Convex: 1.5/Concave: 3
The thinnest substrate (mm)			0.4	0.5
probe		0.5(F probe)/0.3mm(N probe)	One-piece	Split type
Statistical function		mean, min, max, standard deviation	maximum value, minimum value, average value	Average, maximum, minimum, number of tests, standard deviation
Icon function
Weight (g)		92.0	115.0	200.0
Dimensions (mm)		110x53x24	110x65x30	140x65x30
Power supply form		Two 1.5V AAA batteries	2 AAA batteries	2 alkaline batteries

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