Deif AGC 100 - Differential Measurement

6.35 Differential measurement
6.35.1 Differential measurement
With the differential measurement function, it is possible to compare two analogue inputs and trigger on the
difference between the two values.
If the differential function is for example air filter check, the timer will be activated if the set point between PA
(analogue A) and PB (analogue B) is exceeded. If the differential value drops below the set point value before
the timer runs out, then the timer will be stopped and reset.
Timer
value
Before filter
∆ P=P
A
-P
B
P
B
P
A
Differential
limit
Differential
Alarm
After filter
Six different differential measurements between two analogue input values can be configured.
Differential measurements between two sensors can be configured in menus 4600-4606 and 4670-4676. As
an example, the figure below shows the two parameters for input selection for differential measurement 1.
Inputs are selected from the input list as shown below, avaible inputs are:
● Multi-inputs
● EIC measurements
● External inputs (option H8)
● Analogue input (M15.X, only AGC-4)
● Multi-input (M16.X, only AGC-4)
AGC 100 Designer's Reference Handbook
4189340766 UK
Additional functions
DEIF A/S Page 102 of 152