S+S Regeltechnik AERASGARD KCO2 - Modbus [15/48] Aftm kftm lq co2 modbus

S+S Regeltechnik AERASGARD ACO2 - Modbus [15/48] Aftm kftm lq co2 modbus
15
G
HYGRASGARD
®
AFTM- ⁄ KFTM - LQ - CO2 - Modbus
Rev. 2021 - V25
Zero point calibration
The sensors are pre-set and calibrated at the factory.
Each measuring channel has a separate offset potentiometer
for subsequent adjustment of the measurement.
The adjusting range is ± 10 % of the measuring range.
The Modbus interface can be used to program an
alternative output
variable
instead of the standard display.
In this case, the first line indicates the value while the second line
indicates the corresponding unit
statically
.
The index in the third line indicates the display type:
Index 1
= CO2 content in
ppm
Index 2
= air quality (VOC) in
%
Index 3
= temperature in
°C
Index 4
= relative humidity in
% r.H.
Index 5
= atmospheric pressure in
hPa
By default, the display indicates the following measurements with the
corresponding units
cyclically
and consecutively:
CO2
content in ppm,
air quality
(VOC) in %,
temperature
in °C,
relative humidity
in % r.H.
Backlighting is provided for improved legibility.
The Modbus interface allows the display to be
individually
configured,
both in the 7 segment range and in the dot-matrix range.
Display
standard
Display
alternative output variables
Display - individually
programmable
Schematic diagram
offset
°C
r.H.
VOCCO
²
mode address
12345678
ON
DIPA
123456
ON
DIPB
zero
CO
²
VOC
1
2
3
4
1
2
3
4
B
A
GND
U+
B
A
GND
U+
shield shield
Plug for
display
DIP A: Bus address
DIP B: Bus parameters
(Baud rate, parity ...)
Telegram indicator
Reception (LED green)
Error (LED red)
LED (internal status)
Offset correction
Reset button
offset
°C
r.H.
VOCCO
²
mode address
12345678
ON
DIPA
123456
ON
DIPB
zero
CO
²
VOC
1
2
3
4
1
2
3
4
B
A
GND
U+
B
A
GND
U+
shield shield
Plug for
display
DIP A: Bus address
DIP B: Bus parameters
(Baud rate, parity ...)
Telegram indicator
Reception (LED green)
Error (LED red)
LED (internal status)
Offset correction
Reset button
Automatic calibration of the carbon dioxide measurement – (default)
Automatic zero point calibration is deactivated by default in the as-deli-
vered condition and, if required, must be activated using the Modbus.

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