Delta OHM PMBsense-A, Operating Manual

Page: 11 / 24

PM[B]sense
- 11 -
V1.3
Reading of the measurement information:
Command Reply Description
CPSn &| Sets the type of PM measurement averaging for the ana-
log outputs and the measurements sent by the transmitter
in reply to P1, P5, S1 and S5 commands or when reading
MODBUS Input Registers 0…5:

Average over a 10 seconds interval, updated every
second if n=0

Average over a 60 seconds interval, updated every
10 seconds if n=1

Average over a 15 minutes interval, updated every
minute if n=2
Default : Average over a 10 seconds interval, updated
every second (n=0)
RPS & n| Reads the type of averaging for the measurements sent by
the transmitter in reply to P1, P5, S1 and S5 commands.
P0 &| Disable the sending of the measurement enabled with P1.
P1 &| Enable the sending of the PM measurement every second
(the sequence is the same described in command P5).
P5 & Measurements Prints the PM measurements in the following sequence:

PM measurement error (0=no, 1=yes)

PM1.0 in N° of particles/ml

PM2.5 in N° of particles/ml

PM10 in N° of particles/ml

PM1.0 in µg/m
3

PM2.5 in µg/m
3

PM10 in µg/m
3
The PM measurement is averaged according to what is set
with CPS command or MODBUS holding register 19.
S0 &| Disable the sending of the measurement enabled with S1.
S1 &| Enable the sending of the measurement every second
(the sequence is the same described in command S5).
S5 &
Measurements
Prints the measurements in the following sequence:

PM measurement error (0=no, 1=yes)

PM1.0 in µg/m
3

PM2.5 in µg/m
3

PM10 in µg/m
3

CO
2
in ppm

Atmospheric pressure in hPa (internal sensor for
CO
2
measurement compensation)
 Field not used

Field not used

Field not used

Power supply voltage

Internal board temperature
The PM measurement is averaged according to what is set
with CPS command or MODBUS holding register 19.