StressTech RollScan Barkhausen Analyzer

Avoid failures, find cracks before they become cracks

Powerful & Efficient Quality Control

The StressTech RollScan Barkhausen noise signal analyzer instruments are designed for surface quality control and testing of near-surface defects in a wide variety of ferritic steel and other ferromagnetic materials and easily detects defects related to changes of stresses or microstructure. Inspection with Rollscan is fast and can easily match production rates, resulting in significant quality improvements and savings on material and labor expenses. A wide variety of sensors make inspection systems using Rollscan flexible: Piston pins, gears, bearing rings and rollers, camshafts and crankshafts, and landing gears are just some of the parts that can be successfully tested.

Rollscan 250

The Rollscan 250 is a full-featured, self-contained unit which is portable for on-site measurements while also providing advanced capabilities for in-line and laboratory use. Designed for surface quality control and testing of near-surface defects such as grinding burns, heat treatment defects, as well as changes in stress and microstructure in a wide variety of ferritic steel and other ferromagnetic materials.

Led display with sensor feedback for real-time measurement diagnostics
2 measurement channels
Robust design

Features

Applicable for ferritic steels, iron, nickel and cobalt
Includes sensor with pre-amplifier
LED bar graph for measurement value visualization
Setup pages for: Magnetization settings, Measurement settings, Communication settings, and Miscellaneous functions
Two measurement channels
Magnetizing frequencies ranges: Sine wave 1–1000 Hz, Triangle wave 1–150 Hz
Adjustable magnetizing voltage (0-16 Vpp) and magnetizing frequency (1-500 Hz)
Analyzing filter ranges: 70–200 kHz
Connector for auxiliary devices
Rollscan 250 accessory cable set

Rollscan 350

Rollscan 350 is a full-featured, self-contained unit which is portable for on-site measurements while also providing advanced capabilities for in-line and laboratory use. Designed for surface quality control and testing of near-surface defects such as grinding burns and heat treatment defects, as well as changes in stress and microstructure in a wide variety of ferritic steel and other ferromagnetic materials.

Measurement parameters adjustable via graphic user interface and front panel controls – No PC necessary
Oscilloscope display with sensor feedback for real-time measurement diagnostics
User interface in several languages

Features

Applicable for ferritic steels, iron, nickel, and cobalt
Fast response by digital signal processor
Includes sensor with pre-amplifier
Control panel with six function keys for selecting windows and functions
Control wheel with a push button for adjusting different parameter values
Setup pages for: Magnetization settings, Measurement settings, Communication settings, Miscellaneous functions and Diagnostics
Automatic magnetizing voltage and frequency sweeps to find optimal measurement parameters
Single measurement channel
Magnetizing frequencies ranges: Sine wave 1–1000 Hz, Triangle wave 1–150 Hz
Analyzing filter ranges: 10–70 kHz, 70–200 kHz and 200–450 kHz

Rollscan 320

Rollscan 320 is a compact unit with low power consumption. It is designed for deployment in automated systems and production environments. Designed for automated surface quality control and testing of near-surface defects such as grinding burns, heat treatment defects, as well as changes in stress and microstructure in a wide variety of ferritic steel and other ferromagnetic materials.

A DIN rail mount attached to the backside of the unit
Can be placed in electric cabinet
2 measurement channels, with 8 parallel analyzers up to 16 channels

Features

Four functional led lights on the front panel:
- Power on/off
- Measurement on/off
- LAN connection on/off
- Error
2 measurement channels, with 8 parallel analyzers up to 16 channels
Magnetizing frequencies ranges: Sine wave 1–1000 Hz, Triangle wave 1–150 Hz
Analyzing filter ranges: 70–200 kHz
Connector for auxiliary devices

Rollscan Comparison Chart

Feature	Rollscan 250	Rollscan 350	Rollscan 320
Measurement Channels	2	1	2 (with 8 parallel analyzers up to 16 channels)
Magnetizing Voltage Range	0-16 Volts	0-16 Volts	0-16 Volts
Magnetizing Waveform Sine/Triangle	✓ / ✓	✓ / ✓	✓ / ✓
Magnetizing Frequency Range Sine/Triangle	1-1000 Hz/1-150 Hz	1-1000 Hz/1-150 Hz	1-1000 Hz/1-150 Hz
Analyzing Filter Range	70-200 kHz	10-70 kHz, 70-200 kHz, 200-450 kHz	70-200 kHz
Magnetizing & Frequency Sweep	X	Automatic/Visible	X
Communications	Ethernet/USB/RS232	Ethernet/USB	Ethernet
Measurement Parameter Control	Manual/Remote	Manual/Remote	Remote
Oscilloscope Display/Software	X / X	✓ / ✓	X / ✓
Battery Option	✓	✓	X
MicroScan Option	X	✓	X

What is Barkhausen Noise Analysis?

Barkhausen noise analysis is a non-destructive method involving the measurement of a noise like signal induced in a ferromagnetic material by an applied magnetic field. There are two main material characteristics that will directly affect the intensity of the Barkhausen noise signal: hardness and stress. The noise intensity continuously decreases in microstructures characterized by increasing hardness, and compressive stresses will decrease the intensity of Barkhausen noise while tensile stresses increase the intensity.

Measurement Process

Performing Barkhausen noise measurements is a simple process:

Measurement area is magnetized with alternating magnetic field by the sensor
During magnetization the sensor measures the Barkhausen noise signal and transfers it to Rollscan
Real-time measured values are displayed on Rollscan and/or the ViewScan software

Click below for more information on Barkhausen Noise Analysis:

Barkhausen Noise Analysis Information

Product Literature

Description	Part #	Price
Rollscan 250	SM-STECH-ROLLSCAN250	Request Pricing
Rollscan 350	SM-STECH-ROLLSCAN350	Request Pricing
Rollscan 320	SM-STECH-ROLLSCAN320	Request Pricing