Delta OHM PMBsense-A, Руководство по эксплуатации

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PM[B]sense
- 12 -
V1.3
Analog outputs (only PM[B]sense-A):
Command Reply Description
CA1On &| Enable/disable the offset of the analog output 1:
 Offset disabled if n=0 (0…20 mA or 0…10 V)

Offset enabled if n=1 (4…20 mA or 2…10 V)
Default : Offset enabled (n=1) if the output is current,
offset disabled (n=0) if the output is voltage (optional)
RA1O & n| Reads the setting of the offset for the analog output 1.
CA1SOn &| Sets the direct or inverse correspondence between analog
output 1 and associated physical quantity:

4 mA/0 V

Min. quantity, 20 mA/10 V

Max.
quantity if n=0

20 mA/10 V

Min. quantity, 4 mA/0 V

Max.
quantity if n=1
Default : Direct correspondence (n=0)
RA1SO & n| Reads the type of correspondence (direct or inverse) be-
tween analog output 1 and associated physical quantity.
CA1Tn &| Associates the analog output 1 to:

PM1.0 if n=0

PM2.5 if n=1

PM10 if n=2

CO
2
if n=12 (only PMBsense-A)
Default : PM2.5 (n=1)
The PM measurement is averaged according to what is set
with CPS command or MODBUS holding register 19.
RA1T & n| Reads the physical quantity associated to analog output 1.
CA1Ln &| Sets n as the minimum value of the measuring range of
the physical quantity associated to the analog output 1.
If the output is associated to PM, the value must be ex-
pressed as a number of tenths (e.g. n=5 to indicate 0.5
µg/m
3
). If the output is associated to CO
2
, the value must
be expressed as a number of units (e.g. n=200 to indicate
200 ppm).
Default : 0
RA1L & n| Reads the minimum value of the measuring range of the
physical quantity associated to the analog output 1.
CA1Hn &| Sets n as the maximum value of the measuring range of
the physical quantity associated to the analog output 1.
If the output is associated to PM, the value must be ex-
pressed as a number of tenths (e.g. n=50 to indicate 5.0
µg/m
3
). If the output is associated to CO
2
, the value must
be expressed as a number of units (e.g. n=800 to indicate
800 ppm).
Default : 10000 (=1000.0 µg/m
3
of PM)
RA1H & n| Reads the maximum value of the measuring range of the
physical quantity associated to the analog output 1.
RA1F & Quantity
Minimum value
Maximum value
Simultaneously provides the information obtainable with
the RA1T, RA1L e RA1H commands.