Hydac CS1000 series - ISO code according to ISO 4406:1999

Reading the analog output
ISO code according to ISO 4406:1999
The following ISO values can be read out via the analogue output:
•
ISO 4 / ISO 6 / ISO 14
Only one value is output.
•
ISO code in 3 figures ( >4µm
(c)
/ >6µm
(c)
/ >14µm
(c)
)
All values are sequentially time-coded before output.
•
ISO+T
All values are sequentially time-coded before output.
•
HDA.ISO
All values are sequentially time-coded before output.
This signal is planned for the HDA 5500, but it can be used also in other
applications.
The current 4.8 - 19.2 mA or voltage 2.4 - 9.6 V of the output signal,
depending on the ISO contamination class 0.0 - 24.28 (resolution 1 class) or
on an error, is as described below:
Current I
ISO code / error
Voltage U
I < 4.0 mA
Cable break
U< 2.0 V
4.0 mA < I < 4.1 mA
Device error /
The CS is not ready
2.0 V < U < 2.05 V
4.1 mA < I < 4.3 mA
Not defined
2.05 V < U < 2.15 V
4.3 mA < I < 4.5 mA
Flow error
(The flow rate is too low.)
2.15 V < U < 2.25 V
4.5 mA < I < 4.8 mA
Not defined
2.25 V < U < 2.4 V
I = 4.80 mA
ISO 0
U = 2.40 V
…
…
…
I = 19.20 mA
ISO 24.28
U = 9.60 V
19.2 mA < I < 19.8
mA
Not defined
9.60 V < U < 9.90 V
19.8 mA < I < 20 mA
No measured value
9.90 V < U < 10 V
The current (I) or voltage (U) can be calculated for a given ISO
contamination class as follows:
I = 4.8 mA + ISO code x (19.2 mA - 4.8 mA) / 24.28
U = 2.4 V + ISO Code x (9.6 V - 2.4 V) / 24.28
The current (I) or voltage (U) can be calculated for a given ISO
contamination class as follows:
ISO Code = (I - 4.8 mA) x (24.28 / 14.4 mA)
ISO Code = (U - 2.4 V) x (24.28 / 7.2 V)
ContaminationSensor CS1000
en(us)
Page 77 / 136
BeWa CS1000 3764916d 300 en-us 2017-09-25.docx 2017-09-25