RST Instruments ICTS0005, Инструкция по эксплуатации системы

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4
RST Instruments
4 DATA REDUCTION
The data is reduced by calculating the average change for an opposed pair of positions, i.e.:
2
) sin sin ( ) sin' (sin'
sin
3 1 3 1
3 , 1
θ θ θ θ
θ
− − −
= ∆
and
2
) sin sin ( ) sin' (sin'
sin
4 2 4 2
4 , 2
θ θ θ θ
θ
− − −
= ∆
where:
sin
θ
1
= the raw initial data with stud 1 visible
sin
θ
2
= the raw initial data with stud 2 visible
sin
θ
3
= the raw initial data with stud 3 visible
sin
θ
4
= the raw initial data with stud 4 visible
sin'
θ
1
= the raw new data with stud 1 visible
sin'
θ
2
= the raw new data with stud 2 visible
sin'
θ
3
= the raw new data with stud 3 visible
sin'
θ
4
= the raw new data with stud 4 visible
5 CARE AND MAINTENANCE
The Tiltmeter should be treated gently like any precision instrument. In particular, care should be
taken to avoid any bumps or impact, both to protect the MEMS tilt sensor and to avoid denting or
distorting the machine plates and alignment bars. Any dust or grit on the Tiltmeter Monuments
should be carefully wiped off with a damp cloth prior to readings to avoid scratches on the Tiltmeter
Monument or base plate.
The connectors should be kept clean and dry to avoid electrical errors.
A reference Tiltmeter Monument should be maintained in a convenient, stable location to permit the
instrument to be regularly checked.