Additel 686 - Measuring Item Switch; Zeroing; Scaling; Filtering

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2.4.1 Measuring a Switch
Four buttons can switch between current measurement, voltage measurement, switch
test and HART communication. Switch test can choose switch type (mechanical switch, PNP and NPN electronic switch).
When selecting the switch function, the latest switch type will be displayed.
2.4.2 Zeroing
The current/voltage signal provides short-circuit zeroing operation to eliminate the measured zero drift. The
allowable zeroing range is 1%FS.
2.4.3 Scaling
Provides the function of converting current/voltage signals into pressure or other signals. Click to enter proportion
scaling function setting, settings seeing Table 11.
Table 11 Proportional scaling
Item
Effective value
Description
Scaling
Open/ close
Set scaling enabled
Transfer function
Linear/square root
transfer function of scaling
Input range
Channel range or less than channel range
Input range of scaling
Output range
(-999999～+999999)
Output range of scaling
Decimal digits
0 ～ 5
Scaling resolution
2.4.4 Filtering
For specific operations, see 2.3.3.