JUMO 706581 LOGOSCREEN nt Operating Manual - Manual (Page 23)

23
2 Instrument Description
2.5.1 Counter
Counter inputs - Binary inputs
- Alarms
- Errors
- ...
v Chapter 2.7 "Binary Signals"
Counting
frequency 8Hz max.
Weighting Counted pulses are weighted by multiplying them by a factor. A down counter
can be implemented by entering a negative weighting
(e.g. weighting factor -1).
2.5.2 Integrators
Integrator
inputs - Analog inputs
Integrator
time base - sec, min, hr and day
Weighting Integrators are weighted by multiplying them by a factor. Negative integration
can be implemented by entering a negative weighting (e.g. a weighting factor
of -1).
Weighting
example - Flow rate
- Input signal of 0 … 20mA
corresponds to a flow rate of 0 … 1000 liters/sec
- Time base 1sec
- Weighting 0.001 (conversion from liters to m³)
- Display of the integration value (flow rate quantity) in m³
Minimum size
of the input
signal Entering a threshold (amount of the threshold value) has the effect that
integration takes place only when the value has been exceeded. No
integration will occur on falling below this value. The advantage of integration
with a threshold value larger than 0 is that possible noise from a transducer
can be suppressed in this way.
H
This type of flow measurement is based on an analog input. Fast
binary inputs offer another possibility (high-speed counters).
v Chapter 2.5.5 "Flow rate quantity"