dataTaker DT800, Руководство пользователя, Страница: 21 / 29

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6.6 Ruler (Labelled 6BGI)
The ruler along the front edge of the SSP configured as a resistance bridge, in which 2 halves of the
ruler are two active arms of the bridge.
Connect a flying lead wire to the + terminal of analog channel 6, and touch the other end onto the
white markings along the ruler while running the DeLogger program Prog8.dl8
Fig. 18.
Initially the channel will read approximately –8000 ppm when not touching the flying lead onto the
ruler.
•
touch the flying lead onto the 0 marking, and the reading will be around –300 ppm.
•
touch the lead onto the 100 marking, and the reading will be around 300 ppm.
•
touch the lead onto the 50 marking, and the reading will be around 0 ppm.
The readings can be scaled to the 0 to 100 range of the ruler by the span. Prog9.dl8
Fig. 19.
By selecting the scaling tab a span or polynomial can be entered to linearis and scale the data.
Fig. 20.
Touch the flying lead at various markings along the ruler and read the position.
The span can be set more accurately for your SSP by setting the lower and upper signal values to the
actual readings produced by your SSP when the 0 and 100 markings are touched respectively.
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