Vaisala AQT530 User manual

Setup Guide
M212573EN-C
Vaisala Air Quality Transmitter
AQT530


Vaisala Air Quality
Transmitter AQT530
AQT530 measures gaseous pollutants
and particles in the ambient air.
AQT530 is specifically designed for air
quality monitoring networks in areas with
trac, road networks, or around
transportation hubs.
This product is intended for outdoor use
and can be used in wet locations (IP65).
For the most reliable measurements
choose a site that represents the
conditions that you wish to measure.
Make sure that power supply and
communication lines are available.
Follow local and state legislation and
regulations on occupational safety.
Avoid installing the device next to trees
or other vegetation. Large amounts of
insects may also obstruct airflow to the
device.
Avoid mounting device to direct sunlight
or near other heat sources.
Do not mount the device close to
high-powered radio transmitters or
weather station antennas. Make sure that
power lines or generators cannot aect
the performance.
If you use a radio communication device,
install it to a dierent height and away
from the air quality transmitter.
Recommended minimum distance to
radio communication is 1 m (3 ft).
2 ... 4 m (6 ft 7 in ... 13 ft)
Recommended installation height from
ground level.

Ordered separately:
• Service cable kit
Needed configuration depends on your
system. Follow the instructions on the next
page or see AQT530 Configuration Guide
for more information about the available
commands.
AQT530 needs regular maintenance and
typical maintenance interval is 2 years. For
more information about maintenance, see
AQT530 Maintenance Guide.
Find guides online:
www.vaisala.com/aqt530
Other needed tools and equipment:
• Power supply unit
Output voltage: 10 ... 25 V DC
Minimum 8 W
• Terminal block
• Weatherproof enclosure
• Electrician screwdriver
• 5 mm Allen key
In pole mast installation:
• 7 mm socket wrench or
slotted screwdriver
• 10 mm wrench
In sensor support arm installation:
• Two M6x19 mm screws and washers
In wall installation:
• Two screws and wall plugs suitable for
the wall material
• Drilling tools
In product package:
• Air quality transmitter AQT530
• Open-ended M12 cable
• Mounting bracket with two steel bands
Save the container and the
packaging materials for future
transportation or shipping.
Needed for setup
Configuration and maintenance
If AQT530 is installed to Vaisala Beacon
Station BWS500, follow the instructions
in BWS500 Setup Guide for Mast
Installation.
Find guide online:
www.vaisala.com/bws500-support
Installing AQT530 to BWS500

Setting up
communication
1
Serial port configuration
may be needed if sensor is
used in other than Vaisala
system.
Pole mast Sensor support arm Wall
2.1 Attach brackets to
the pole mast, sensor
support arm, or wall.
2.2 Connect sensor
cable to AQT530.
3.1 Connect the open
end of the connection
cable to your system
according to the table.
Operating voltage:
10...25 V dc
Max 0.8 A at 10 V dc
3.2 Place the terminal
block inside the
weatherproof enclosure
to protect it from
moisture.
3.3 Validate that data is
coming to your system.
2.3 Attach AQT530 to
mounting bracket.
Tighten screw and nut to
keep AQT530 firmly in
place.
Installing sensor
2
AQT530 can be mounted
on Ø 30 ... 120 mm
(1.18 ... 4.72 in) pole mast,
sensor support arm, or
wall with mounting
bracket.
Recommended
installation height is
2 ... 4 m (6 ft 7 in ... 13 ft).
1.2 Open a terminal program
(for example, PuTTY or TeraTerm).
1.3 Open serial port configuration.
1.4 Select the COM port where you have
connected ATEN USB to Serial Bridge.
1.5 Use the following COM port settings to
connect the AQT sensor:
1.1 Connect AQT530 to a computer with the service cable kit.
1.8 Use command write --really to the save
configuration.
1.9 To check if measurements are fetched
from the sensor use command meas.
1.10 Disconnect cables. AQT530 is now ready
to be installed.
1.7 Use command set to set configuration
parameters that match your system. To see
the current values, use command show.
1.6 Accept the changes and open command
window.
set <parameter>=<value>
show <parameter>
$ show rs485_baud
show: rs485_baud=19200
$
$ set rs485_baud=19200
set: rs485_baud=19200
$
Example:
$ write --really
$
Example:
$ meas
NO2 (ppm): 0.001
CO (ppm): 1.458
O3 (ppm): 0.368
TEMP (C): 22.0
HUM (%RH): 42.1
PRES (mbar): 1002.3
Uptime (s): 802
$
Parameter Value
Baud rate 115200
Data bits 8
Stop bit 1
Parity None
Flow control None
The RS-232 interface is
used mainly for the
maintenance connection.
Let the unit stabilize for at
least 24 hours before using
the gas measurement
results. During the
stabilization period, the
gas measurements are
marked as invalid.
For more information about
available commands, see
AQT530 Configuration
Guide.
You can check the right COM
port from Device Manager
on your Windows computer.
AQT530 makes buzzing noise
during particle measurement.
Connecting power and
data over RS-485
interface
3
RS-485 supports Modbus
ASCII, Modbus RTU, and
plain ASCII output with
comma separated values
(CSV).
Wire RS-232 RS-485
White Data GND Data GND
Brown RX (input) -
Green TX (output) -
Yellow No connection
(floating)
No connection
(floating)
Gray - B (-)
Pink - A (+)
Blue Power GND Power GND
Red Power 10 ... 25 VDC Power 10 ... 25 VDC
Black Cable ground Cable ground
90 mm
[3.54 in]
2x 2x
M6x10 mm Use wall plugs and screws that
are suitable for the wall material.
2x
Your system
Parameter Description Default value
rs485_addr Modbus address,
1 ... 253
1
rs485_baud Baud rate,
4800 ... 115200 bps
19200
rs485_mode Interface in use
0 = ASCII CSV
1 = Modbus ASCII
4 = Modbus RTU
4 = Modbus RTU
rs485_databits Databits, 7 or 8 8
rs485_parity Parity
N = None
E = Even
O = Odd
E = Even
rs485_stopbits Stop bits
1 = One stop bit
2 = Two stop bits
1 = One stop bit
Needed tools:
• 7 mm socket wrench or
slotted screwdriver to
tighten steel bands in mast
installation
• Two M6 screws and Allen
key in sensor support arm
installation
• Drilling tools in wall
installation
• 5 mm Allen key and 10 mm
wrench to tighten screw and
nut in bracket
Buzz

Safety note
WARNING! Do not substitute parts or modify the system, or install unsuitable parts in the system.
WARNING! Assess the risks from the installation work. Take into account also the eects of local
weather conditions. Do not perform installation procedures when there is a risk of thunderstorm or
lightning activity in the area.
WARNING! Failure to comply with these precautions or with specific warnings elsewhere in these
instructions violates safety standards of design, manufacture, and intended use of the product.
Vaisala assumes no liability for the customer's failure to comply with these requirements.
WARNING! If the equipment is used in a manner not specified by Vaisala, the protection provided
by the equipment may be impaired.
WARNING! Check that the instrument has not been damaged during transportation. Do not install
or operate a damaged instrument.
WARNING! Do not disassemble the instrument unless instructed to do so in AQT530 maintenance
instructions to avoid exposure to laser radiation.
CAUTION! Improper modification can damage the product or lead to malfunction.
Any modification voids your warranty.
CAUTION!
Warns you of a potential
hazard. If you do not read and
follow instructions carefully at
this point, the product could
be damaged or important data
could be lost.
WARNING!
Alerts you to a serious hazard.
If you do not read and follow
instructions carefully at this
point, there is a risk of injury
or even death.
NOTE
Highlights important
information on using the
product.
To prevent electrostatic discharge, avoid touching component contacts or connectors.
Vaisala Air Quality Transmitter AQT530P incorporates a laser particle counter.
AQT530 is classified as a Class 1 laser device in accordance with International Standard
IEC/EN 60825-1. The laser is contained in an enclosure, preventing direct physical access to
laser radiation. A Class 1 laser is safe under all conditions of normal use.
Wear personal protective equipment (PPE).
Electrostatic Discharge (ESD) can damage electronic circuits. Vaisala products are adequately protected against ESD
for their intended use. However, it is possible to damage the product by delivering electrostatic discharges when
touching, removing, or inserting any objects in the equipment housing.
To avoid delivering high static voltages to the product, touch a conductive part of the equipment chassis with your
other hand before touching ESD-sensitive components.
All rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. Any reproduction, transfer,
distribution or storage of information contained in this document is
strictly prohibited. All specifications — technical included — are
subject to change without notice.
PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21
FI-01670 Vantaa, Finland
© Vaisala 2021

M212573EN