5
- ambient temperature from minus 20ºC to plus 70ºC,
- relative humidity up to 98 % at +25ºC,
- atmospheric pressure from 84 kPa to 106.7 kPa.
2. TECHNICAL SPECIFICATIONS
2.1. The range of measurement of the field strength of
the residual magnetization of the metal, mT:
- from 0 to 20.00
2.2. Measuring range of mechanical stress of metal of
steel products, metal structures, MPa:
- from 0 to σ
B
where σ
B
is the ultimate strength of the metal.
2.3. The limit of the allowed basic error in measuring
the mechanical stress of the metal of a steel product or metal
structure is determined by the formula:
0.5 + 0.05 σ
i
(2.1)
where σ
i
is the stress scanner readout in MPa.
2.4. The metal stress scanner is powered by 3x18650
elements with total nominal electric voltage of 11.1V.
2.5. Electric current consumed from a freshly charged
PP3 element, mA:
- when working without the display backlight
- 16 ± 0.5
- when working with the display backlight
- 68 ± 0.5
2.6. Operating time of stress scanner when powered
from freshly charged element PP3, in hours, at least:
- 45
2.7. Time to set the metal stress scanner's operating
mode, s, not more than:
- 30
2.8. Maximum speed of the inspection:
- 7 m/min
6
2.9. Time of continuous operation of the stress scanner,
h, not less than:
- 12
2.10. Battery charge time, minutes, not more:
- 250
2.11. The stress scanner has a memory card with a
capacity of more than 60000 measurements.
2.12. The stress scanner has a standard output for
transmitting measured information to a personal computer via
a mini-USB connector.
2.13. Overall dimensions, mm, not more than:
- Electronic unit (length × width × thickness)
- 210×110×44
- Magnetic measuring unit (length × width × height)
- 260×150×30
- Magnetic measuring unit cable length
-1500±200
2.14. Weight, g:
- Electronic unit with battery
- 550
- Magnetic measuring unit
- 1300
2.15. Average recovery time, h:
- 5
2.16. Full average service life, years:
- 10
2.17. Established service life, years:
- 2
