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Aeroqual
Dust Sentry
User Guide
Aeroqual Limited
109 Valley Road, Mt Eden,
Auckland 1024, New Zealand
Phone: +64 9 623 3013
Fax: +64 9 623 3012
Web: www.aeroqual.com
MRK-D-0014, V4
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Aeroqual Dust Sentry User Guide, March 2013
Table of Contents
User Guide Revision History ............................................................................................................... 4
1.
Description..................................................................................................................................... 5
1.1.
Nephelometer .......................................................................................................................... 6
1.1.1.
Electrical connections to Nephelometer .......................................................................... 6
1.1.2.
Inlet heater ...................................................................................................................... 6
1.1.3.
Inbuilt filters ..................................................................................................................... 6
1.2.
Pump Module .......................................................................................................................... 7
1.3.
Control Module ........................................................................................................................ 7
1.4.
Power Module ......................................................................................................................... 8
1.5.
Auxiliary Module (Optional) ..................................................................................................... 8
1.5.1.
Wiring of Auxiliary Module ............................................................................................... 9
1.6.
Analogue Output Module (Optional) ..................................................................................... 10
1.7.
Gatetel GT-HE910_G Cellular Terminal (Optional) .............................................................. 10
1.7.1.
Specifications ................................................................................................................ 11
1.8.
Electrical Connections ........................................................................................................... 11
1.9.
Alarm Relay ........................................................................................................................... 12
2.
Assembly and Installation .......................................................................................................... 13
2.1.
Assembly of heated inlet ....................................................................................................... 13
2.2.
Connect Mains Power ........................................................................................................... 14
2.3.
Sample Collection Filter (Optional) ....................................................................................... 15
3.
Dust Sentry Operation and Software ........................................................................................ 16
3.1.
Getting Started ...................................................................................................................... 16
3.2.
System Checks ..................................................................................................................... 18
3.3.1.
Further information about IP address solutions using GPRS Systems ........................ 20
3.3.2.
Email Message .............................................................................................................. 20
3.3.3.
SMS Message ............................................................................................................... 21
3.4.
Software Description Summary............................................................................................. 21
File ................................................................................................................................. 21
3.4.1.
3.4.2.
Setup ............................................................................................................................. 23
3.4.3.
Data ............................................................................................................................... 23
3.4.4.
Tools .............................................................................................................................. 24
3.4.5.
Calibration ..................................................................................................................... 24
3.4.6.
Diagnostics (Available in Engineer Mode) .................................................................... 24
4.
Maintenance................................................................................................................................. 26
4.1.
Maintenance Schedule .......................................................................................................... 26
4.2.
Maintenance Procedures ...................................................................................................... 26
4.2.1.
Sample Flow Check ...................................................................................................... 26
4.2.2.
Zero Air Check (Purge Cycle) ....................................................................................... 27
4.2.3.
Sheath Flow Check ....................................................................................................... 28
4.2.4.
Leak Check ................................................................................................................... 28
4.2.5.
Manual Zero Air Check ................................................................................................. 29
4.2.6.
Fibre Span Check.......................................................................................................... 29
4.2.7.
Laser Current Check. .................................................................................................... 29
4.2.8.
Filter Changes ............................................................................................................... 29
4.2.9.
Cyclone and Inlet Cleaning ........................................................................................... 30
4.2.10. Pump Module Removal ................................................................................................. 30
5.
Calibration.................................................................................................................................... 31
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6.
Troubleshooting .......................................................................................................................... 32
7.
Specifications .............................................................................................................................. 34
8.
Schematic Diagrams ................................................................................................................... 35
8.1.
Pneumatics............................................................................................................................ 35
8.1.1.
Sample Mode ................................................................................................................ 35
8.1.2.
Zero Mode ..................................................................................................................... 35
8.2.
Electrical ................................................................................................................................ 36
8.3.
Communication ..................................................................................................................... 36
9.
Third Party Sensors .................................................................................................................... 37
9.1.
Sensirion T/RH Sensor SHT75 ............................................................................................. 37
9.2.
Gill WindSonic ....................................................................................................................... 37
9.3.
Met One 034B ....................................................................................................................... 37
9.4.
Met One MSO ....................................................................................................................... 38
9.5.
Vaisala Weather Transmitter WXT520 ................................................................................. 39
9.6.
Cirrus MK:427 ....................................................................................................................... 40
10. Mounting and Site Positioning Guidelines ............................................................................... 41
10.1.
Mounting ............................................................................................................................ 41
10.2.
Inlet height ..................................................................................................................... 41
10.3.
Measurement Interference ............................................................................................ 42
10.4.
Safety ............................................................................................................................ 42
11. Orbit Data ..................................................................................................................................... 43
11.1.
Specifications .................................................................................................................... 43
11.2.
Configuring the Orbit Modem ............................................................................................ 43
11.3.
Using the Orbitdata Website ............................................................................................. 44
11.3.1. Using the Graphs .......................................................................................................... 45
11.3.2. Setting Alarms ............................................................................................................... 46
11.3.3. Downloading Data ......................................................................................................... 46
12. Appendix ...................................................................................................................................... 47
12.1.
Warranty ............................................................................................................................ 47
12.2.
Technical Support ............................................................................................................. 47
12.3.
Declarations ...................................................................................................................... 47
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Aeroqual Dust Sentry User Guide, March 2013
User Guide Revision History
Document Number: MRK-D-0014
Product Version: 1.2
Document Version: 4
Date released: March 2013
Description: User Guide for Dust Sentry
This User Guide is a newly created document for the use of the Aeroqual Dust Sentry.
Date
Revision number
Description of change
May 2011
V1
Initial draft
March 2013
V2
Improved accuracy and
readability
All
August 2013
V3
Updated for DS 1.2
All
October 2013
V4
Added information on
Orbit Data and Gatetel
Modem
Pg. 10-11 and
Pg.44-47
MRK-D-0014, V4
Affected pages
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Aeroqual Dust Sentry User Guide, March 2013
1. Description
Aeroqual’s Dust Sentry is a user friendly instrument designed to provide reliable real time indicative
particulate measurement of PM10, PM2.5 or PM1 using a well proven near forward light scattering
nephelometer and high precision sharp cut cyclone.
The instrument includes an integrated internal data logger, alarm relay outputs and a SD card as
standard. There are also numerous additional options available, including, wireless communications,
SMS and email notifications, weather sensors and GPS. The instrument is packaged in a robust,
lockable enclosure and is light enough for one person site installations. The ease of installation, as
well as the extensive range of possible add-ons, enables the unit to be used in a wide range of
applications.
Modem Antenna
(Optional)
PM Optical Engine
Sample Filter
Purge Filter
Auxiliary Module
(Optional)
Pump Module
Analogue Output
Module (Optional)
Sample Filter
(Optional)
Modem (Optional)
Power to Sensor
Relay
Alarm Relay
Control Module
RS232 to USB
Adapter
Note: 12 VDC Power Supply mounted externally at base
The key components of the Dust Sentry are described below.
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1.1. Nephelometer
Aeroqual uses a Nephelometer optical sensor from Met One Instruments. The optical sensor uses
light scattering from particulate matter to provide a continuous real-time measurement of airborne
particle mass. The light source is a visible laser diode and scattered light is measured in the near
forward angle using a focusing optics and a photo diode.
The Nephelometer has an on-board temperature sensor which corrects for thermal drift, sheath air
filter to keep the optics clean, automatic baseline drift correction and a fibre optic span system to
provide a check of the optical components.
Safety: This sensor is considered a Class I laser product. Class I laser products are not
considered to be hazardous. There are no user serviceable parts inside the cover of
the sensor. The device contains a laser operating at 670 nm which is visible to the eye
and can cause damage to the eye if directly exposed. Only trained service personnel
should attempt servicing or repair of the sensor.
1.1.1. Electrical connections to Nephelometer
The electrical connections to the Nephelometer are summarised below:
Wire colour
Function
Orange (x2)
Fibre optic solenoid
Red
5V (power in)
Black
Ground
White
Signal out (0-5 V)
Black/white
Signal Ground
Yellow
Laser current monitor ( 10mV = 1 mA laser current)
Grey
Temperature output
1.1.2. Inlet heater
The Dust Sentry uses a 12 V heater on the sample inlet tube to reduce the humidity of sampled air to
prevent particle growth and fogging of the Nephelometer optics in high RH conditions. The inlet
should always be heated.
1.1.3. Inbuilt filters
The Nephelometer contains two filters which should be replaced at specified intervals (see
Maintenance Section 4). The “Sample” filter is a coarse filter designed to protect the sample pump
from excessive particle build-up. The “Purge” filter is a fine filter which filters the sheath air flow and
also produces particle-free air during the auto-zero cycle.
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1.2. Pump Module
The Pump Module contains a microprocessor for mass calculation and a pump for sampling. The
schematic is shown in Section 8.
Sample line
Purge air line with
flow adjuster
12VDC power
connection
Fibre span switch
Inlet heater connector
Power on LED
Cable from optical engine.
RS485 bus cable
Exhaust line with flow
adjuster
1.3. Control Module
The control module is the interface between the RS485 sensor bus and data communication links. It
contains a display, an SD data card which logs data, a RS232 serial connector for external
communication, a bus connector for internal communication with the sensor modules and a cable
connector for the optional Humidity and Temperature sensor (if fitted).
Front
Display
Top
RJ45 RS485
2 way Bus relay
activation
DB9 RS232
2.1mm 12VDC relay
switched Power output
6 way Alarm Relay
4 way T/RH
SD Card Slot
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Bottom
Programming Port
RS232
Controller 12VDC
power input
Off/On switch with LED.
Depress to power on (blue
LED on)
Programming Dip
Switch (position is
important)
The Dust Sentry is supplied with a RS232 to USB adapter fitted between the Control Module and an
external USB socket fitted at the base of the enclosure. This enables the user to perform a wide range
of functions over the USB connection, without needing to open the enclosure door, such as data
logging and various system checks using the supplied Aeroqual Dust Sentry PC software
Note 1: The driver for the RS232 to USB adapter is in the software CD which comes with the
instrument.
Note 2: The power to sensor and alarm relays are also attached to the control module base
plate.
1.4. Power Module
The Dust Sentry internal power requires regulated 12 VDC to
maintain a constant pump speed. An external mains to
12VDC power supply (Meanwell HLG80-12A 60W 12V) is
fitted on the outside of the enclosure and this will allow
connection to mains supply.
Note: If you wish to run the Dust Sentry on solar power you will need to use a DC-DC
convertor in order to supply a regulated 12 VDC for the Dust Sentry – refer to the application
notes on the website
1.5. Auxiliary Module (Optional)
The auxiliary module acts as an interface between third party sensors and the Dust Sentry
communication bus. It is configured with different operating modes which can be selected by using
the dipswitches located on the side of the module. Aeroqual has integrated a number of third party
sensors and is able to supply the auxiliary module preconfigured for your sensors.
Firmware: AUX_MODULE_01.
Use for: Analogue inputs, Vaisala WXT520 weather, Gill Windsonic wind, Cirrus MK:427 noise.
1
2
3
4
Function
OFF
OFF
OFF
OFF
Default - standard Auxiliary module with AN1, AN2, Freq
ON
OFF
OFF
OFF
Vaisala WXT520 with RS232 communication + AN1, AN2, Freq
OFF
ON
OFF
OFF
Vaisala WXT520 with RS232 communication + Cirrus MK427 Noise
ON
ON
OFF
OFF
Wind Sonic with RS232 communication + AN1, AN2, Freq
OFF
OFF
ON
OFF
Wind Sonic with RS232 communication + Cirrus MK427 Noise
ON
OFF
ON
OFF
Cirrus MK427 Noise module only
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Aeroqual Dust Sentry User Guide, March 2013
Firmware: AUX_MODULE_02.
Use for: Analogue inputs, Met One MSO weather, Met One 034b wind, Cirrus MK:427 noise.
1
2
3
4
Function
OFF
OFF
OFF
OFF
Default - standard Auxiliary module with AN1, AN2, Freq
ON
OFF
ON
OFF
Cirrus MK427 Noise module only
OFF
ON
ON
OFF
Met One MSO with RS232 communication + Cirrus MK427 Noise
ON
ON
ON
OFF
Met One MSO with RS232 communication + AN1, AN2, Freq
OFF
OFF
OFF
ON
Met One 034B analogue module + Cirrus MK427 Noise
Pin 1
12VDC Power
Connectors
Programming
Port
Status LED
RJ45 Connectors
for RS485 bus
Pin 12
Programming Dip
Switch
1.5.1. Wiring of Auxiliary Module
PIN 1: GND
PIN 2: 12V FUSED
PIN 3: RESERVED
PIN 4: RESERVED
PIN 5: RX
PIN 6: TX
PIN 7: 0-5V IN
PIN 8: 4-20mA IN
PIN 9: FREQ IN
PIN 10: AGND
PIN 11: METONE 034B PWR
PIN 12: TIMED RELAY
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Example of wiring:
Wind Sonic
Vaisala
Met One MSO
(Pin 1) GND,
SIGNAL GND
(Pin 1) GND for
operating, data &
heating
(Pin 1) GND,
SIGNAL,
COMMON, SHIELD
(Pin 2) 12V
(Pin 5) RX
(Pin 6) TX
(Pin 2) 12V for
operating & heating
(Pin 5) RX
(Pin 6) TX
(Pin 2) 12V
(Pin 5) RX
(Pin 6) TX
Met One 034B
(Pin 1) GND
(Pin 12) VCC
(Pin7) WD
(Pin 9) WS
Cirrus MK:427
(Pin 1) GND,
ACTUATOR GND
(Pin 2) 12V, LOOP
IN
(Pin 8) LOOP OUT
(Pin 12)
ACTUATOR IN
A programming port is also exposed through the side of the module to allow custom programs to be
loaded into the module.
Note: Aeroqual can supply a standard programming tool for distributors to reprogram the
auxiliary module to the specified requirements.
1.6. Analogue Output Module (Optional)
The Dust Sentry has the option to integrate an ADAM 4021
Analogue Output Module into the system to allow for the digital
inputs of a chosen sensor to be converted to an analogue output.
The analogue output module receives the digital input via an
RS485 interface and converts it to a 4-20mA and 2-10V output.
These outputs follow each other.
Outputs:
4mA (2V) = 0% of full scale value.
12mA (6V) = 50% of full scale value.
20mA (10V) = 100% of full scale value.
The module is easily configured via the Operations menu in the PC software and can convert to an
analogue output any chosen sensor already integrated in the Dust Sentry. The module uses the
logging period to calculate the reading, which is also set in the Operations menu. This differs from the
alarm relay, SMS and email which all use the averaged alarm period to calculate the reading. For
more information regarding the PC Software and setting up the analogue output module please refer
to Section 3.1.
1.7. Gatetel GT-HE910_G Cellular Terminal (Optional)
Aeroqual can provide a Gatetel GT-HE910_G
Cellular Terminal with GPS for remote data
access over GSM, GPRS or SMS networks.
Please read the Gatetel GT-HE910_G Cellular
Terminal manual for detailed instructions on
configuration and use. Further information can
be found at:
http://gatetel.com/products.php?product=22
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1.7.1. Specifications
Features
Incorporates Telit HE910-DG
module
The Telit module handles all GSM/UMTS GPS
processing with PYTHON script
GSM: 850/900/1800/1900MHz
UMTS/HSPA+: 800/850/900/1700/1900/2100MHz
Single supply voltage 6V DC to 55V DC
connector 4 pin micro-fit 3mm
Two outputs optocouplers open collector drive 100ma
Two inputs optocouplers, 0-55v
One ADC 10 bit , 0-55V
connector 6 pin micro-fit 3mm
Modem Full RS232, connector D-Type 9pin (DB-9)
Modem USB, Connector USB Type B High retention
GSM/UMTS GPS via SMA connectors
Frequency bands
Power supply
ADC and GPIO inputs
Communication
Antennas
Mechanical Description
180g (6.35oz)
0.4 lb
83mm x 64mm x 34mm 3.26inch x 2.51inch x 1.33inch
Weight
Dimensions(max) L x W x H
Case material
Aluminum
Environmental Requirements
Operating temperature range
-20°C to +55°C
-4°F to 131°F
Ambient temperature
The module is fully functional in all the temperature range
and it fully meets the ETSI specifications.
-30°C to +70°C
-22°F to 158°F
The module is fully functional (*) in all the
temperature range. Temperatures outside of
the range –20°C to +55°C (-4°F to 131°F) might
slightly deviate from ETSI specifications.
Humidity
5% - 85%
1.8. Electrical Connections
RS485 Bus
The two wire RS485 bus connections are made using 20 cm CAT5 cables between the sensor
modules. The last module on the bus also has a blue termination dongle fitted.
Note: If the optional Analogue Output Module is fitted the termination dongle is not fitted.
Instead termination resisters are fitted in the RS485 cable that terminates at the Analogue
Output Module.
12 VDC Power Bus
All modules inside the Dust Sentry operate from the 12VDC power. The power is supplied by a daisy
chain of black and red cables. A relay is activated by the Control Module on/off button to allow the
sensor bus to be powered.
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12 VDC Power in
12 VDC power is connected into the instrument at the terminal connector strip (“chock bloc”).
1.9. Alarm Relay
The Dust Sentry has a built in alarm relay function that is set up via the Operation Dialog in the PC
software (See Section 3.1.)
Relay Output: This is fitted as standard and is activated by “Enable Alarm Relay Output” tick box. If
the set point set in “Alarm trigger point” is exceeded the relay is activated. This can be used to
activate a siren or strobe or other peripheral devices. The relay remains activated until the measured
value drops below the reset point (expressed as a % of the trigger point). This is controlled via the
“Alarm reset point of trigger”. The “Alarm trigger point average period” determines the amount of time
that the concentration needs to be exceeding the trigger point before the relay is activated.
If “Active output on diagnostics” is selected the alarm will trigger upon sensor failure or sensor no
report. If not selected the alarms remain in the state they were in when the last valid reading was
logged.
The Alarm relay is energised by the Control Module in response to the alarm trigger point. The trigger
point is programmed into the Control Module via the Operation menu in the PC Software. The Alarm
Relay is a double pole; double throw type (see diagrams below). This allows the connection of two
different alarm signals – e.g. siren and strobe - that may have different power requirements.
The relay contacts rating: 10A @ 24VDC 220VAC.
Coil
Normally Open A
Common A
Normally Closed A
Normally Open B
Common B
Normally Closed B
Relay Internal Schematic
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Aeroqual Dust Sentry User Guide, March 2013
2. Assembly and Installation
2.1. Assembly of heated inlet
Parts List:
A. Inlet Tube/Heater including power cable
B. Sharp Cut Cyclone (if fitted)
C. TSP Inlet
A
B
C
i.
Connect parts A, B and C
ii.
Open door of enclosure and remove protective cap from the optical engine
Protective
Cap
iii.
Insert Inlet Tube Assembly through base mount and fix the three mounting screws
3x M3 Mounting
Screws
Note: Ensure the power cable is fed through the inlet hole when connecting
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Aeroqual Dust Sentry User Guide, March 2013
iv.
Connect power to Inlet Tube/Heater inside the enclosure
Heated inlet power cable
2.2. Connect Mains Power
Caution: The high voltage mains supply must be wired by a certified electrician
in compliance with local electrical regulations.
•
Locate the power connector terminal which is situated outside the enclosure at the bottom.
The power supply will already be wired to the connector however the cable to connect to
mains power needs to be wired.
1. Unscrew the nut
gland to loosen the
terminal block and pull
connector apart
Nut gland
Plug
Neutral
(Blue)
Connector
Terminal block
Earth
(Yellow/Green)
2. Feed the power cable through the nut gland
plugs and connector and wire the cable to the
terminal block according to the diagram.
Live
(Brown)
3. Reconnect into the connector
ensuring the plugs are fitted securely
and the nut gland tightened.
Note: To remove the terminal block from inside the connector unclick it from the casing by
turning it slightly then pull out
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2.3. Sample Collection Filter (Optional)
The Dust Sentry can be fitted with a 47mm collection filter holder if requested. It is used to collect
particulate samples for composition analysis.
Note: If the Dust Sentry is shipped with a sample collection filter holder, it
will not contain a filter on arrival.
If you wish to use the sample collection filter:
1. Remove the internal sample filter from the 80180 optical engine (See 4.2.8)
2. Unscrew the collection filter housing and insert a 47 mm filter.
3. Tighten the collection filter housing.
4. Check and adjust the sample flow to 2.0 LPM
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3. Dust Sentry Operation and Software
3.1. Getting Started
Computer Requirements
•
•
•
•
•
•
CD-ROM Drive or internet connection for software download
RS232 serial port or USB – RS232 serial port converter and USB cable (included)
Windows OS version 2000 or later
Minimum 100 Mb of spare hard drive space
Recommended 512 Mb RAM or more
Recommended 1 GHz processor speed or faster
1. Once the Dust Sentry is assembled and power is connected install the SD card into the control
module.
2. Start the Dust Sentry by pushing the on/off switch on the control module (See Section 1.3 for
location of On/Off switch)
3. Connect the instrument using a computer via the USB cable to the outside of the enclosure
4. Install Aeroqual Dust Sentry software. This can also be downloaded from the Aeroqual
website at www.aeroqual.com
5. Launch the Aeroqual Dust Sentry PC software.
a. Select to log in as either:
• User (default password = “password”)
• Engineer (default password = “aeroqual”)
Note 1: User has access to most day to day functions on the
instrument. Engineer has access to all functions, including
diagnostic parameters (Sensor Module Settings and Sensor
Diagnostic View).
6. Configure the Dust Sentry instrument:
a. Select Setup Communication Port
b. Select Serial Port RS232 and the relevant Com port. Press OK when complete.
Note 2: The settings should be as seen below:
Note 3: To connect via the modem select TCP/IP Socket and enter the network IP address and
port number. If the PC is behind a proxy server this information needs to be added as well.
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7. Check configuration
•
•
•
•
Select Setup Configuration
Check the correct sensors in the Dust Sentry have been configured.
These should match the sensors on the invoice and the sensors list in the instrument logbook.
Click Save and Close.
8. Set Dust Sentry Real Time Clock
a. Click on Tools Update Real Time Clock (this will synchronise the Dust Sentry
clock with the computer date/time)
9. Configure the operations
a. Select Setup Operations.
b. Enter Data Logging Period
c.
If the alarm relay is being used please check
“Enable Alarm Relay Output”
d. Select the output sensor and set the Alarm
trigger point. The alarm will go off when the
concentration reaches above the
concentration set for the selected sensor.
e. Select the reset point of trigger. This is the
percentage of the alarm trigger
concentration at which the alarm will reset.
f.
Select the alarm trigger point average
period. This signifies the time interval at
which the average is calculated for control of
the alarm.
Note: The alarm average period must be
greater than or equal to the data report rate
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g. If the analogue output module is being used please select “Enable 4-20 mA module”.
The module will follow the “Output Sensor” selected.
Note 1: If “Active on diagnostic” is set the analogue output will go to full scale upon No Report
or Sensor Failure condition. If not selected the analogue output will remain in the state it was
in when the last valid reading was logged.
Note 2: When the particle monitor zero calibration is taking place the analogue output module
does not update, i.e. it remains in the state it was in immediately prior to the zero calibration.
The module remains in this state until the zero calibration is finished, then updates on the next
valid reading.
h. If the modem is being used please select “Use GateTel modem”. Once this has been
checked the option to enable email and SMS message alerts will appear. (Refer to
Section 3.3. for information on connecting and using the modem features)
10. Start data-logging to confirm sensor communication and operation is correct.
a. Click Data Table Real Time to launch real time data table.
b. Click File Start Data logging. Data will start being displayed in Real Time Table.
3.2. System Checks
The following are a list of checks that should be performed to ensure the communications are working
correctly and the data is being logged properly. If there is an issue with one of these checks please
refer to Section 4 or contact Aeroqual for technical support.
1. With the Dust Sentry on, open the door and observe the display on the controller. This should
be scrolling with sensor readings.
2. Connect a USB cable to the port on the Dust Sentry enclosure and connect to a PC running
the Dust Sentry PC software. Confirm that you can communicate correctly with the
instrument.
3. Verify the Dust Sentry is data logging correctly to the SD card by clicking “File Download
Files” on the PC software. A daily log file (DLYYMMDD.AQL) containing the DUST SENTRY
sensor data is created each day. Also system events such as power on, configuration
updates, calibration events and system faults are logged to an EVENTLOG.AQL file.
4. Confirm that the Real Time Clock setting and Configuration is correct.
5. Confirm all of the sensors installed in the Dust Sentry are logging onto the SD card log files
and in the real time table in the PC software. If not check that all the sensors are loaded in
Configuration menu
3.3. Modem configuration
If the Gatetel GT-HE910_G Cellular Terminal is purchased with the Dust Sentry it will need to be
configured using the PC software. Firstly, the modem requires a suitable SIM card (not supplied) that
matches the configuration.
Note: The SIM card needs to be pushed into the modem with the electronic tile facing upwards.
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Configure
• Select Setup Configure GPRS Modem
• Enter the SIM card provider’s APN and username and password if applicable
Note: To use the modem in Server Mode requires an unrestricted APN that can accept
connections
•
•
•
Click save
Select Operating mode and select one of the operating modes
If using Dyn Org service:
Dyn server name is: members.dyndns.org
Dyn login name is: your account log in name
Dyn login password is: your account log in password
DynDNS host name is: the name you have configured for this instrument
Note: You must reboot the Dust Sentry after saving the Dyn Org parameters.
The modem has the following operating modes:
1. TCP Client Mode:
• IP and domain name support
• Destination address and port
• Dust sentry connects to chosen server and data accessed via server.
Note: There is no remote access to the Dust Sentry using this mode, except via the designated
server.
2. TCP Server Mode:
•
DDNS support for fixed or dynamic public IP addresses (using dyndns.org)
•
Optional firewall to restrict which IP addresses can connect to Dust Sentry
•
Set TCP port
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3.3.1.
Further information about IP address solutions using GPRS
Systems
GPRS is a communication technology that allows data acquisition systems to overcome the difficulty
of cabling for wide area remote sites. GPRS applications are becoming more prevalent, but the
dynamic IP address issues associated with GPRS networking continue to frustrate system integrators.
The trouble with I/O devices with GPRS capability is that they receive a different IP address every
time they connect to the GPRS network.
Three distinct solutions have been developed to overcome this challenge:
Solution 1: Public Static IP Address
The first option is to obtain a public static IP address; some carriers (telecom service providers) can
assign a static IP address to a specific SIM card. This way, all the I/O devices will have their own
static IP address. The main benefit of this solution is that it behaves like a wired solution. However,
not all carriers offer this kind of service.
Solution 2: VPN Service Provided by Carrier/MVNO
A VPN (Virtual Private Network) is a secure LAN solution that groups specific devices together. The
VPN grouping concept solves the dynamic IP address issues and prevents unauthorized persons
from accessing the data. For this VPN solution, customers are required to buy one of a number of
different GPRS on-line services to be able to access a Virtual Private Network (VPN). When the
GPRS device dials up, the carrier will assign a private IP address which is on the same network
segment as the host and can maintain bi-directional communication using a polling architecture. Many
enterprise clients turn to mobile virtual network operators (MVNO). These MVNO’s acquire numerous
GPRS services and then rents them out to customers who are looking for a small number of IP
addresses.
Unfortunately, some countries do not have MVNOs, and some carriers do not provide VPN services.
For this reason, this solution may be unfeasible for some users.
Aeroqual has used www.wyless.com successfully to communicate with AQM instruments.
Solution 3: DDNS
Using dynamic IP addresses is often necessary since many ISPs do not provide static IP addresses.
The Dynamic Domain Name System (DDNS) is used to convert a device’s name into a dynamic IP
address so that remote devices can communicate with the control centre using a fixed domain name.
DDNS takes care of the Dynamic IP address of a device, and DNS the static IP address of a device.
With most remote GPRS devices, you need to apply for a hostname for each of the devices handled
by the DDNS server. When GPRS devices get an IP address from the carrier, they will automatically
connect to the GPRS network. Each time a GPRS device’s built-in DDNS client gets a new IP
address, it will send the IP address to the DDNS sever.
Aeroqual has integrated the “DynDNS Pro” service from http://dyn.com with your GateTel
modem. For a small annual fee you can configure up to 30 host names to use with up to 30
modems.
3.3.2.
Email Message
This function assumes the modem is fitted and correctly configured. It is activated by the “Enable
Email Alert” tick box under Operations. Up to 5 Email recipients can be connected at once.
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•
•
Select Setup Email Recipients and enter the Email server and Email recipients
NOTE: the SMTP server will typically be one provided by your SIM card provider. The user
name and password are often not required.
3.3.3.
SMS Message
This function assumes the modem is fitted and correctly configured. It is activated by the “Enable
SMS Alert” tick box under Operations. Up to 5 SMS recipients can be connected at once.
• Select Setup Mobile Recipients and enter the relevant mobile phone numbers
Note: The country code needs to be included e.g. +44
3.4. Software Description Summary
The Dust Sentry Software is designed to be a simple interface for communicating with the Dust Sentry
monitor via a PC. It can be used to configure the instrument, initiate the zero calibration routine,
modify gain factors, poll data and display the data in either table or graphical format. The software
runs in Java VM1.5 (supplied with software) and the database is an open source HSQLDB Java
database. Data can be easily exported to a spread sheet for processing. The software also
incorporates a TCP/IP modem connection which can be used to connect to and operate a Dust Sentry
unit remotely.
3.4.1.
File
Search monitor
Connect to Monitor
Start Data Logging
Stop Data Logging
Searches for available Dust Sentry monitors
Connects to Dust Sentry
Starts data logging from the Dust Sentry
Stops data logging from the Dust Sentry
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Export Logged Data
Import Files
Download Files
Exports logged data from the Dust Sentry
Imports file (aql file)
Downloads files; including daily files and event log
Note: Files can be either saved to the PC only by clicking Save/Save all or saved to the PC and
the database by clicking Save & Import
Update sensor list
Update the sensor list on the database (Manual modification only
available in Engineer Mode)
Note 1: Double click on the sensor name, unit or range to be modified and enter the new
information. Click save once modification is complete.
Note 2: The changes made will modify the title headings in the logged data; it will not alter the
readings. This is particularly useful for when AN1 and AN2 are being used.
Zip database
Unzip database
Exit Ctrl X
Zips the database
Unzips the database (prompted by a warning message)
Exits the Dust Sentry software
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3.4.2.
Setup
Configuration
Operations
Test Connection
Configure GPRS Modem
Mobile Recipients
Email Recipients
Communication Port
3.4.3.
Configures Monitor ID, Sensor Modules and Measurement Units
Configures the Data logging interval and Alarm and Analogue Output
functions
Tests the connection to the Dust Sentry
Configures the SIM card properties and operating mode of modem
Configures mobile SMS alerts
Configures email alerts
Allows setup of the serial COM port and TCP/IP port to communicate
with the Dust Sentry
Data
Graph Real Time
Graph Logged Data
Table Real Time
Table Logged data
Graphs real time data from the Dust Sentry
Graphs Logged data from the Dust Sentry
Tabulates the real time data from the Dust Sentry
Tabulates the logged data from the Dust Sentry
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3.4.4.
Tools
View Configuration
Poll Data (Ctrl D)
Switch User
Change Login User Password
Update Real Time Clock
Reset Timer
Reset Controller
3.4.5.
Views the configuration settings of the Dust Sentry
Polls data from the Dust Sentry (data will appear either in the real
time table or real time graph depending on which is open)
Change from User to Engineer mode
Changes the password required for User login
Updates the real time clock to that of the computer
(prompted with a confirmation message)
Resets the timer
Performs a software reset of the Dust Sentry Control Module
Calibration
Control Factors
Zero Calibration
Displays the Dust Sentry’s Gain and Offset factors
Initiates the zero calibration.
Note: The Gain and Offset can be modified manually by double clicking the unit to be changed,
entering the new value and clicking save.
3.4.6.
Diagnostics (Available in Engineer Mode)
Sensor Module Settings
Displays the sensor module settings. Click on download all to
display the module settings if not automatically downloaded.
(exportable to text file)
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Parameter
PM10
Meaning
Version
5.8
Firmware version (software controlling instrument operation)
HTR
16
Not used
H3
101.78
TEMA
580
Not used
TIMA
720
Auto zero timing (minutes)
TEMR
500
Not used
TIMR
5
H0
0.01
H1
1
H2
10.077
PWMH
35
Not used
PWML
3
Factory Module Type. Do not modify
Gain
1
Factory Gain. Do not modify
Calibration parameter taken from Met One calibration certificate
(Bx100)
Auto zero cycle time interval (minutes)
The baseline output of 80180 (V)
Not used (fixed as 1)
Calibration parameter taken from Met One calibration certificate
(Mx1000)
Note: These are EXAMPLE settings; instrument will have slight variations depending on
calibration and software version releases
Sensor Diagnostics View
Displays the sensor module diagnostic view (exportable to text file)
Parameter
Meaning
PM10 Laser (mA)
Laser current stable (18 ±3 mA)
PM10 Volt (V)
Output in Volts (0 to 5V) will vary with concentration
PM10 STemp (C)
80180 engine temperature
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4. Maintenance
4.1. Maintenance Schedule
Procedure
Section
Frequency
Sample Flow Check
4.2.1.
Monthly
Purge Flow Check
4.2.2.
Monthly
Sheath Flow Check
4.2.3.
Monthly
Manual Zero Air Check
4.2.5.
Monthly
Fibre Span Check
4.2.6.
Monthly
Laser current check
4.2.7
Monthly
Filter Changes
4.2.8.
6 to 12 months
Cyclone and Inlet Cleaning
4.2.9
3 Months
Cyclone Disassembly
4.2.9
12 Months
Optical sensor factory
calibration
Contact Aeroqual
24 Months
Notes 1: Suggested intervals for maintenance procedures may vary with sampling intensity
and environmental conditions.
Note 2: All checks should be carried out during the initial commissioning of the Dust Sentry
4.2. Maintenance Procedures
4.2.1.
Sample Flow Check
A constant 2.0 LPM flow is essential to ensure the sharp cut cyclone is separating out the correct
particle size to be measured e.g. PM10 or PM2.5. To measure the flow, remove the TSP head from
the inlet and connect the volumetric flow meter to the top of the sharp cut cyclone using the adaptor
supplied with the instrument. Ensure the flow meter is on a steady surface before reading the flow
rate.
Note 1: The adaptor tubing should be connected to the TOP of the volumetric flow meter
(negative flow)
Note 2: The flow should be 2.0 LPM
The PM inlet flow can be adjusted via the flow adjuster on the exhaust and purge line.
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•
•
•
If the flow is less than 2.0 LPM then close the purge flow screw (turn clockwise) until 2.0
LPM is achieved.
If the flow is greater than 2.0 LPM then open the purge flow screw (turn anticlockwise) until
the flow is 2.0 LPM.
If you can’t adjust the flow to 2 LPM using the purge flow screw then close (clockwise) the
exhaust flow screw until 2.0 LPM is achieved.
Afterwards replace the inlet components with care, making sure there is no leak.
Purge
adjustment
Exhaust
adjustment
4.2.2.
Zero Air Check (Purge Cycle)
The purge cycle is designed to pump air backwards through the optical engine as a cleaning
mechanism. It also acts as a zero air check and adjusts the zero automatically. This will occur every
12 hours (720 minutes) automatically. To manually check the purge flow is operating correctly:
•
Select Calibration Zero Calibration
Use a volumetric flow meter to record the flow using the same steps as measuring the sample flow.
Note 1: The adaptor tubing needs to be connected to the BOTTOM of the volumetric flow meter
(positive flow)
Note 2: The flow rate should be > 0.3 LPM
If the flow is less than 0.3 LPM then open the Purge Adjuster by turning the adjustment anti-clockwise
until 0.3 LPM is reached.
Note 3: It may take a few moments for the purge cycle to complete. The unit can also be
restarted to stop the purge cycle.
Note 4: It is important to re-measure the inlet sample flow rate following a purge flow
adjustment. The sample flow rate must be stable at 2.0 LPM.
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4.2.3.
Sheath Flow Check
The sheath flow is a constant stream of air which
ensures the optics remains clean. It is important this
is working correctly to maintain the accuracy of the
measurement. In order to check the flow, a
volumetric flow meter needs to be connected
between the purge flow adjuster and particle engine
as seen in the diagram.
Note 1: The flow should be approximately 0.2
LPM
4.2.4.
Leak Check
If the correct sample, purge or sheath flow cannot be achieved, there may be a leak in the pump
module or 80180 engine. First check the entire flow system:
•
•
•
•
Remove the purge connection from the module and plug the end of the purge line
Remove the TSP head and block the PM inlet.
Connect the pressure end of a flow meter to the exhaust port of the module.
If there is no leak the flow should drop to zero.
Sample connection
(remove to check
module)
Purge connection
(remove to check
whole flow system)
If the flow does not drop to zero it suggests there is a leak somewhere in the system. To check the
pump module:
•
•
•
•
Keep the purge line disconnected.
Remove the sample connection and cap off the module sample port.
Connect the exhaust port of the module to the pressure end of a flow meter.
The flow should drop to zero.
If there is a leak in the pump module the module will need to be sent back to the Aeroqual factory.
Please contact technical support.
If there is no leak in the pump module check the tubing and connectors along the flow path carefully.
If you cannot isolate the leak it is likely the leak is located in the engine. In this case, the engine will
need to be sent back to the Aeroqual factory. Please contact technical support.
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4.2.5.
Manual Zero Air Check
A zero air check can also be carried out manually as a way to ensure the purge is working correctly.
To do this the TSP inlet needs to be removed and the particle filter (supplied with the instrument)
needs to be attached to the monitor. Ensure there is a good seal around the cyclone inlet.
The filter will remove 99.99% of particulates from ambient air. Wait 5 minutes and then check the
readings on the control module. The reported value should be 0 +/- 3 µg/m3. If it is not then the auto
zero cycle is not performing correctly. You will need to check the purge filter (Section 4.2.8) and
replace if dirty and also check the purge flow to make sure it is correct.
4.2.6.
Fibre Span Check
Perform a manual zero air check first, then initiate the fibre span by turning the switch on the Particle
Monitor to on. The fibre span check is used to detect any major component failures such as the laser,
photo detector or lens. Wait approximately 4 minutes until the measurement value increases and
record the PM10 measurement from the controller. The fibre span measurement should be within ±
20% of the fibre span concentration noted in the logbook. If it is significantly lower, then either the
module optics are dirty or the laser is ageing. Contact Aeroqual for advice
4.2.7.
Laser Current Check.
Refer to Section 3.4.6. to determine the laser current. If the laser current has drifted up or down by
more than 3mA, the engine may need servicing; please contact Aeroqual for advice.
4.2.8.
Filter Changes
There are two internal filters which are located on the side of the optical engine. They are designed to
provide protection and to clean purge air. These will become dirty and must be replaced periodically.
To do this, unscrew the filters from the side of the optical engine and replace with new filters. These
can be purchased from Aeroqual. Please contact technical support for a quotation.
Clean
Filter
Sample
Filter
Dirty
Filter
Purge
Filter
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4.2.9.
Cyclone and Inlet Cleaning
The dust cap of the sharp cut cyclone will accumulate particulate matter and will need to be
periodically cleaned. Blow out the cyclone with compressed air and unscrew the dust cap and clean.
Replace the cap tightly and ensure there are no potential leaks.
The cyclone can be disassembled completely by removing the three Allen head screws and pulling it
apart. The internal parts should be cleaned with isopropyl alcohol once a year.
Allen head
screws
The TSP inlet can also be dismantled by unscrewing the 3 screws and separating the head into two
parts. Use a lint-free cloth wetted with isopropyl alcohol to clean both the inside and outside of the
inlet.
Screws
4.2.10.
Pump Module Removal
The pump module can be removed from the Dust Sentry by unscrewing the 4 screws on the base
plate and sliding the module out. Ensure the Dust Sentry is switched off when removing the module.
The sample, purge and exhaust lines need to be disconnected and all the connected cables removed.
The two main failures which would require removal of the pump module are:
1. A leak is discovered
2. The pump requires replacement
In both these cases the pump module will need to be sent back to the Aeroqual factory for repair.
Please contact technical support for assistance.
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5. Calibration
All particle monitors based on light scattering require a site calibration for optimum accuracy. This is
because the average density and light scattering behaviour of dust particles will vary from site to site.
This adjustment is sometimes known as a “K-factor”. Aeroqual recommends a site calibration be
performed at the time of initial installation and then every 12 months. Calibration is performed by colocating the Dust Sentry with a Reference Particulate Matter measurement system and adjusting the
Gain of the particle monitor so the average reading matches that of the Reference Instrument. A list of
Reference instruments can be found at:
http://www.epa.gov/ttnamti1/files/ambient/criteria/reference-equivalent-methods-list.pdf
Install the Dust Sentry beside the Reference instrument. Make sure both instruments are setup
correctly. Two procedures are given below depending on whether the reference instrument is a
gravimetric or continuous instrument.
Procedure overview for Gravimetric Reference Instrument
1. Weigh a reference filter and install into the Reference instrument.
2. Leave the Dust Sentry and Reference instrument running for at least 24 hours until a weighable
quantity of particulate matter sample has been collected.
3. Check the sample flows of both instruments to ensure they are within specification.
4. Remove the Reference filter and re-weigh
5. Download the Dust Sentry PM data for the calibration period.
Calculations
1. Reference Filter Weight of PM (ug):
PM(Ref) = (filter weight at finish) – (filter weight at start)
2. Volume of air sampled by reference sampler (m3)
Volume(Ref) = minutes of test * Flow Ref (LPM) / 1000
3. Calculate average reference PM density (ug/m3)
AvPM(Ref) = PM(Ref)/ Volume(Ref)
4. Calculate average AQM60 PM (ug/m3):
AvPM(Dust Sentry) = sum(PM readings over test period)/number of readings
Procedure overview for a Continuous Reference Instrument
1. Leave the Dust Sentry and Reference instrument running for at least 24 hours
2. Check the sample flows of both instruments to ensure they are within specification.
3. Download the Dust Sentry and Reference instrument data for the calibration period
Calculations
1. Calculate average Dust Sentry PM (ug/m3):
AvPM(Dust Sentry) = sum(PM readings over test period)/number of readings
2. Calculate average Reference PM (ug/m3):
AvPM(Ref) = sum(PM readings over test period)/number of readings
Calculation of Dust Sentry Gain
1. Calculate K factor
K factor = AvPM(Ref) / AvPM(Dust Sentry)
2. You should then apply this to the Gain Factor on the PM channel.
new GAIN = old GAIN x K Factor
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6. Troubleshooting
Symptom
Possible Cause
Fault isolation/Solution
PM values seem
incorrect
Sample flow incorrect
Check sample flow and adjust to correct
value using flow adjusters
Sample and/or purge filters dirty
Replace filters
Gain factors incorrect
Perform span calibration
Offset factor incorrect
Perform zero calibration
No Response from Sensor
module. Not connected correctly.
Check the electrical connector on the
sensor module is firmly connected
Termination dongle not installed
Install termination dongle
Bus cable
Check RS485 bus cable continuity
Computer too slow
Test with a faster computer.
RF noise in environment.
Try to reduce RF noise
RS485 bus cable is faulty
Replace bus cable
Module RS485 chip faulty
Remove one module at a time to identify
faulty module and then replace.
RF noise in environment.
Try to reduce RF noise
RS232 cable disconnected
Reconnect cable
Control Module Failed
Replace Control Module
PC Data logging
stopped
USB to serial hub not working
Check USB connectors. Check the serial
hub is present on the device hardware
menu in the PC. If not reload driver
software and re-install.
No data on SD card
Card not correctly installed in slot.
Turn off Dust Sentry and install card in slot
correctly.
“NR” or “9999” in Data
table(No response)
Occasional NR or
“9999” in Data Table
Frequent “9999”
No communication over
RS232
Data logging interval set too
large.
Set logging interval in configuration to a
lower interval.
Data card module fault
Send control module to factory for
replacement module.
IP Modem connection
lost
SIM card account in debt
Pay SIM account
Network down
Wait for network
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Low Sensitivity
Low Sensitivity
Signal strength low
Install high gain antenna or move
instrument to site with better coverage.
Laser is old
Laser needs replacing.
The laser current can be
measured in diagnostics mode
using Dust Sentry software. If
above 20 mA then fault
Send to your authorised distributor or
contact Aeroqual technical support.
Dirty optics
Optics need cleaning
Send to your authorised distributor or
contact Aeroqual technical support.
High baseline (H0)
Dirty optics
Optics need cleaning
Send to your authorised distributor or
contact Aeroqual technical support.
Noisy Readings
Dirty optics
Optics need cleaning
Laser is old
Send to your authorised distributor or
contact Aeroqual technical support.
Laser needs replacing.
Send to your authorised distributor or
contact Aeroqual technical support.
Negative readings
Fibre Span has
changed significantly
since installation
Purge filter new and shedding
particles
Run zero cycles until purge filter no longer
shedding particles.
Purge flow zero
Adjust purge flow
Purge filter dirty
Replace purge filter
Dirty Optics
Optics need cleaning
Laser is old
Send to your authorised distributor or
contact Aeroqual technical support.
Laser needs replacing.
Send to your authorised distributor or
contact Aeroqual technical support.
Readings flat
Laser failed (check laser current)
Laser needs replacing.
Photo-detector failed
Send to your authorised distributor or
contact Aeroqual technical support.
Send optical engine to Met One for
replacement detector and calibration.
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7. Specifications
Measurement technology
Near forward light scattering nephelometer
Range
0-2000µg/m
Accuracy
+/-(2 ug/m + 5% of reading)
Cut points available
PM1, PM2.5, PM10 or TSP
Sample flowrate
2.0 LPM
Inlet
36cm heated inlet
Alarm
Relay, Email and SMS (Optional)
Data logging
2GB SD card (>15 years data storage)
Display
4 Line Alphanumeric
Output data units
µg/m
Averaging Period
1-60 minutes
Reference filter
47mm GFA circular filter (Optional)
Software
Data logging & configuration software included
Outputs
RS232, 4-20mA / 2-10V (optional)
Mounting
Pole, tripod or wall mounting
3
3
3
Wireless communication options
Meteorological sensor options
Environmental operating range
Power requirements
Enclosure
Weight
GSM/GPRS modem with GPS; Orbit DATA (cloud-based
DAS)
Wind speed and direction; temp/RH; rain; pressure; noise
(Class 1)
-10°C to +45°C; 0 to 95% RH (NC)
Power requirements Mains 100 - 260V, 18W (standard) or
regulated 12 (+/- 2.5%) VDC with <150 mVp-p ripple and
noise (15W)
IP65-rated Lockable GRP Cabinet: Width 330mm x Depth
187mm x Height 483mm (including solar shield armour &
mounting brackets)
<12kg
Conformity
Certification (Applied for)
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8. Schematic Diagrams
8.1. Pneumatics
8.1.1.
Sample Mode
8.1.2.
Zero Mode
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8.2. Electrical
8.3. Communication
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9. Third Party Sensors
9.1. Sensirion T/RH Sensor SHT75
Description:
Specifications
Measures air temperature and relative humidity
For full details visit the company website www.sensirion.com
Air Temperature
Range
Accuracy
Resolution
Relative Humidity
Range
Accuracy
Resolution
-40°C to + 124°C
±0.3°C
0.01°C
0-100 %RH
±2 %RH
0.1 %RH
9.2. Gill WindSonic
Description:
2-axis ultrasonic wind sensor, measures wind speed and
direction
Specifications:
For full details visit the company website www.gill.co.uk
Wind Speed
Range
Accuracy
Resolution
Wind Direction
Range
Accuracy
Resolution
Mechanical
External construction &
protection
Size & Weight
Environmental
Operating range
0-60 m/s
±2% @ 12 m/s
0.01 m/s
0-359° (no dead band)
±3% @ 12 m/s
1°
LURAN S KR 2861/1C ASA/PC;
IP65
142 x 160 (mm) ; 0.5 Kg
-35°C to +70°C; <5% to 100%
RH
9.3. Met One 034B
Description:
Specifications:
3-cup anemometer and vane designed to measure wind
speed and direction
For full details visit the company website www.metone.com
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Wind Speed
Range
Accuracy
Resolution
Wind Direction
Range
Accuracy
Resolution
Mechanical
Finish
Sensor Weight
Environmental
Operating range
0-75 m/s
±0.12 m/s @ < 10.1 m/s
±1.1% @ > 10.1 m/s
0.7998 m/s
Mechanical 0-360°
Electrical 0-356°
±4°
< 0.5°
Clear anodized aluminum
0.81kg
-30°C to +70°C
9.4. Met One MSO
Description:
Specifications:
Measures wind speed and direction; air temperature; relative
humidity; and barometric pressure
For full details visit the company website www.metone.com
Wind Speed
Range
Accuracy
Resolution
Wind Direction
Range
Accuracy
Resolution
Air Temperature
Range
Accuracy
Resolution
Relative Humidity
Range
Accuracy
Resolution
Barometric Pressure
Range
Accuracy
Resolution
MRK-D-0014, V4
0-50 m/s
±2%
0.1 m/s
0-360°
±5°
1°
-40°C - +60°C
±0.5°C
0.1°C
0-100%
±4%
1%
500-1100 mbars
± 2 mbars
0.1 mbar
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9.5. Vaisala Weather Transmitter WXT520
Description:
Measures wind speed and direction; liquid precipitation;
barometric pressure; air temperature; and relative humidity
Specifications:
For full details visit the company website www.vaisala.com
Wind speed and Direction
Speed
Measurement range
0-60 m/s
±0.3 m/s or ±3% (0-35 m/s); ±5% (36-60
Accuracy
m/s )
Direction
0-360°
Measurement range
Accuracy
±3°
Liquid Precipitation
Rainfall
cumulative accumulation after latest
reset
output resolution
accuracy
0.01 mm, 0.001 inches
5%
Rainfall duration
output resolution
counts each 10 s increment when droplet
detected
Rain intensity
10 s
range
output resolution
one-minute running average in tensecond steps
0-200 mm/h
0.1 mm/h, 0.01 inches/h
Barometric Pressure
Measurement range
600-1100 hPa
Accuracy
±0.5 hPa @ 0 to 30 °C (+32 to +86 °F);
±1 hPa @ -52 to +60 °C (-60 to +140 °F)
Air Temperature
Measurement range
-52 to +60 °C (-60 to +140 °F)
Accuracy @ +20 °C
±0.3 °C (±0.5 °F)
(+68 °F)
Relative Humidity
Measurement range
0-100 %RH
Accuracy
±3 %RH (0-90 %RH); ±5 %RH (90-100
%RH)
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Aeroqual Dust Sentry User Guide, March 2013
9.6. Cirrus MK:427
Description:
Class 1 outdoor noise meter
Specifications:
For full details visit the company website
www.cirrus-environmental.com
Output Type
Frequency Weighting
Time Weighting
Automatic Calibration
Measurement Range
Current Loop Output
Dimensions
Weight
Mounting
External Power
Output Cable
‘A’ weighting SPL output in the form
of a 4-20mA loop
dB(A) to IEC 61672-1:2002
Factory set to Fast (‘F’) IEC 616721:2002
Electrostatic Actuator System with DC
voltage control
30 – 100dB(A)
Iout = 0.1mA/dB
1m length
4.5 Kg
240mm x 30mm diameter pole
Mounting Kit provided
(2 U-brackets, 4 nuts, 3 Jubilee Clips)
+12V DC in
10m as standard
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Aeroqual Dust Sentry User Guide, March 2013
10. Mounting and Site Positioning Guidelines
It is important that the positioning of the Dust Sentry is suitable so as to
yield data which is representative of that specific location.
10.1. Mounting
The Dust Sentry comes with 2x mounting brackets and 3x U-bolts for 2
inch poles. The same brackets are used for both pole and wall mounting.
To wall mount the Dust Sentry the brackets are screwed into the wall
instead of using the U-bolts.
For pole mounting:
1. Secure top mounting bracket at a suitable height using 2x U-bolts
provided
2. Fix lower mounting bracket to the Dust Sentry chassis with
screws
3. Hang the Dust Sentry on the top mounting bracket
4. Place U-bolt through lower mounting bracket
Note: Only one U-bolt is used to secure the bottom bracket
5. Add nuts and washers and tighten the bottom U-bolt into position
2.
1.
4.
3.
5.
10.2. Inlet height
•
•
•
•
If PM monitoring is related to human exposure, the sampling inlet height should be positioned
in the “breathing zone”. This is located between 2 and 15 meters above ground level.
If PM monitoring is related to specific emission sources, the position of the sampling inlet can
be more flexible. It is more important that there is no obstruction between the approaching air
from the emission source and the sampling inlet.
If more than one Dust Sentry, or any other particulate instrument, is being used at the site, the
height of the inlets should be uniform.
If the Dust Sentry inlet is the highest point at the site, a lightning rod must be installed to
prevent damage to the unit during electrical storms.
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10.3. Measurement Interference
•
•
•
•
The meteorological conditions of the site should be taken into consideration when positioning
the Dust Sentry. For example, there should be no obstruction to the air flow in the
predominant wind direction. A minimum clear sky angle of 120 degrees is recommended.
The inlet should be at least 1 meter away from any objects that could potentially influence the
airflow characteristics e.g. trees, vertical surfaces or walls.
Avoid overhead high-voltage cables which may cause electrical interference with the
sampling equipment.
Demolition/construction activities and change to normal transport patterns due to road works
etc. can significantly affect the data. Ensure a record of such events is kept to account for
unexpected peaks in concentration.
10.4. Safety
•
•
•
The intended data capture rate should be considered when positioning the Dust Sentry. If
data capture above 90% is essential, the unit should be located in an area which has 24 hour
access available.
The positioning should allow for routine maintenance checks to be performed safely by
personnel.
If using a tripod, ensure the tripod legs are bolted to the ground to prevent the unit from
falling. Ensure the Dust Sentry is in a secure location to avoid vandalism or theft.
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Aeroqual Dust Sentry User Guide, March 2013
11. Orbit Data
Orbit data is a cloud-based data acquisition and reporting system developed specifically for
Aeroqual’s real-time air quality instruments. Using Orbit, customers are able to access their data
online and in real time. The system comprises a proprietary modem which plugs directly into the serial
port of your instrument. The modem pushes data to the cloud-based server at pre-determined
intervals. Via orbitdata.com end users can access, view, and download the data using a browser on
any internet enabled device.
11.1. Specifications
Modem
SIM card
Power requirements
Input
Dimensions
Environmental operating range
Software
Browser compatibility
Alarms
Parameters
Data Warehouse
Data Format
3G GSM/GPRS
Global Sim supplied by Aeroqual
KORE Telematics
5-30VDC, supplied by instrument
RS232
149 x 81 x 31 (mm)
-20 to +70°C
Web-based
Internet Explorer (7+), Chrome, Safari
Unlimited text/SMS, email
Up to 20, dynamically configurable
RAID, clustered storage, multi-site
CSV, XML (FTP only)
Conformity
11.2. Configuring the Orbit Modem
Aeroqual will provide a Serial Port Extender (SPE) which is a GSM/GPRS telemetry modem used at a
remote location to connect between a remote device (with a serial port) and a central computer. The
SPE is more than just a GPRS telemetry modem with an IP stack built in. It has many functions which
ensure that the remote device is always able to communicate with the host system. Aeroqual also
provides a Global SIM which is pre-installed.
To configure using the PC software:
•
•
•
Select Setup Operations
Select Data Logging period to 5 minutes
Select Polling Data
•
•
Uncheck Use GateTel modem
Click Save and Close
•
•
•
Select Setup Configuration
Set Monitor ID to 1
Click Save and Close
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11.3. Using the Orbitdata Website
Once the Dust Sentry has been configured with the Orbit Modem the unit can be accessed via
www.Orbitdata.com
•
When the site is first accessed a default landing page will be shown
•
•
Select Options Login and Settings
Enter your User Name and Password
Note: You can elect to save the login details in your
browser at this point
•
•
The system displays “Logged in as: your name”
Select Go to Graphs
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Aeroqual Dust Sentry User Guide, March 2013
•
Navigate to your specific site and unit by:
o Selecting the correct country from the drop down menu
o Selecting the Region
o Selecting the Sub-region
o Selecting the Unit
11.3.1.
Using the Graphs
Once the correct unit has been selected the default 24 hour graphed data will be shown on the
screen. Above the graphs it will show the time, date and how long since the unit was last called. To
the right of each graph the max, min and average will be shown.
•
Click on the graph to zoom in on a specific time interval.
o Hover the mouse over the graph to view the start time and time interval of the graph
to be shown if clicked e.g. “3 hr graph from 3:00pm Mon, 16 Sep 2013”.
o To zoom out press the grey button in the bottom right e.g. “Zoom out to 7 day graph”
Note: The time intervals that can be shown are: 3 months, 1 month, 7 days, 24 hours, 3 hours,
1 hour and 15 minutes.
Click on the grey button to zoom out
•
To return to the default view (24 hours) click Options Normal Graph View
•
Other viewing options are: QuickView, Temperature Graphs Only, Latest
Data in Text Format, Latest Weather, Smartphone View, and Historical Data.
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Aeroqual Dust Sentry User Guide, March 2013
11.3.2.
Setting Alarms
To set an alarm email Aeroqual at [email protected] with the following information:
1. What triggers the alarm (e.g. PM10 concentration > 100ug/m3)
2. What clears the alarm (e.g. PM10 concentration < 80ug/m3)
3. Who to notify in the case of an alarm (e.g. Email [email protected] or SMS +64 21 123
456)
Once the alarms have been configured they are visible from the Options Alarm Information view.
11.3.3.
Downloading Data
The data can be downloaded as a CSV file and opened in Excel
from the Orbitdata website.
•
Click on Options Data Options Download Data
•
Select the Start Date, Duration and any other customised
options required then click Download Data
•
Open the file as an Excel Spread Sheet. The data will be
displayed as seen below:
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Aeroqual Dust Sentry User Guide, March 2013
12. Appendix
12.1. Warranty
Please review the Aeroqual Warranty Policy on our website at www.aeroqual.com
12.2. Technical Support
Technical information, service and spare parts are available through your distributor. In addition,
worldwide technical support is available from Aeroqual Ltd. Please contact Aeroqual Technical
Support by email: [email protected] This will generate an automatic ticket and your enquiry
will be addressed as quickly as possible by a qualified service person.
Aeroqual Limited
109 Valley Road, Mt Eden, Auckland 1024, New Zealand
Phone: +64 9 623 3013
Fax: +64 9 623 3012
Email: [email protected]
12.3. Declarations
Copyright Aeroqual Limited. All rights reserved. Reproduction, transfer, distribution or storage of part
or all of the contents of this document in any form without the prior written permission of Aeroqual
Limited is prohibited.
“Aeroqual” and “Aeroqual Limited – Making the Invisible Visible” are registered trademarks of
Aeroqual Limited. Other product and company names mentioned herein may also be trademarks or
trade names.
Aeroqual operates a policy of continuous development. Aeroqual reserves the right to make changes
and improvements to any of the products described in this document without prior notice.
Under no circumstances shall Aeroqual be responsible for any loss of data or income or any special,
incidental, consequential or indirect damages howsoever caused.
The contents of this document are provided "as is". Except as required by applicable law, no
warranties of any kind, either express or implied, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose, are made in relation to the accuracy, reliability or
contents of this document.
Aeroqual reserves the right to revise this document or withdraw it at any time without prior notice. The
availability of particular products may vary by region. Please check with the Aeroqual dealer nearest
to you.
© Aeroqual Limited 2013. All rights reserved.
1. The Aeroqual Dust Sentry complies with EN 61000-6-1:2001
2. The Aeroqual Dust Sentry complies with EN 61000-6-3:2001
3. The Aeroqual Dust Sentry complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) these devices may not cause harmful interference, and (2) these
devices must accept any interference received, including interference that may cause
undesired operation.
4. The Aeroqual Dust Sentry is pending MCERTs for indicative ambient particulate monitor
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Aeroqual Dust Sentry User Guide, March 2013
USE SENSIBLY
Use the Aeroqual DUST SENTRY instrument only as per this user guide.
USE AEROQUAL APPROVED SERVICE
Only approved service personnel must work on this product.
ACCESSORIES
Use only approved accessories. Do not connect incompatible products.
CONNECTING TO OTHER DEVICES
When connecting to any other device, read the appropriate user guide for detailed safety
instructions. Do not connect incompatible products.
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Aeroqual Dust Sentry User Guide, March 2013
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