Microtronics myDatalogEASYplus, Руководство пользователя

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Chapter 9 User interfaces
Note:
Additional explanation: Delta mode
Assumption: The source channel contains the counter reading of an infinite counter in m
3
. The calculated
channel 1 should contain the flow rate in m
3
/s and calculated channel 2 should contain the flow rate in l/h.
Parameter Value channel 1 Value channel 2
Basis -> mode Delta Delta
Basis -> unit m
3
/s l/h
Calculation -> time
basis Seconds Hours
Calculation ->
offset 0 0
Calculation ->
factor 1 1000
Required configuration
Source Calculated channel 1 Calculated channel 2
Date/time Infinite counter [m
3
] Flow rate [m
3
/s] Flow rate [l/h]
26.03.2013 12:50 900 0
1)
0
1)
26.03.2013 12:51 960 1 3,600,000
26.03.2013 12:52 990 0.5 1,800,000
26.03.2013 12:53 1005 0.25 900,000
26.03.2013 12:54 1065 1 3,600,000
1)
Calculation not possible as there is no measurement value before 12:50.
Explanation: No values can be determined for the measurement at 12:50 for the calculated channels as there is no
previous value and the difference between the counter readings cannot be determined. For the measurement at
12:51, the difference to the counter reading is 60m
3
and the time difference is 60sec.
Result = ( (value difference / time difference [sec.]) * time basis [sec] * factor ) + offset
The result for calculated channel 1 (time basis "Seconds", offset "0" and factor "1") is calculated as follows:
Channel 1 = ( (60m
3
/ 60sec.) * 1 * 1 ) + 0 = 1m
3
/s
The result for calculated channel 2 (time basis "Hours", offset "0" and factor "1000") is calculated as follows:
Channel 2 = ( (60m
3
/ 60sec.) * 3600 * 1000 ) + 0 = 3,600,000l/h
Rev. 06 87