Kanomax Dust Operating Manual

Aeroqual Limited

Aeroqual

Dust Sentry

User Guide

MRK-D-0014, V4 Page | 1

109 Valley Road, Mt Eden,

Auckland 1024, New Zealand

Phone: [phone]

Fax: [phone]

Web: www.aeroqual.com

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

Further information about IP address solutions using GPRS Systems ........................ 20

3.3.1.

Email Message .............................................................................................................. 20

3.3.2.

SMS Message ............................................................................................................... 21

3.3.3.

3.4. Software Description Summary ............................................................................................. 21

File ................................................................................................................................. 21

3.4.1.

Setup ............................................................................................................................. 23

3.4.2.

Data ............................................................................................................................... 23

3.4.3.

Tools .............................................................................................................................. 24

3.4.4.

Calibration ..................................................................................................................... 24

3.4.5.

Diagnostics (Available in Engineer Mode) .................................................................... 24

3.4.6.

4. Maintenance................................................................................................................................. 26

4.1. Maintenance Schedule .......................................................................................................... 26

4.2. Maintenance Procedures ...................................................................................................... 26

Sample Flow Check ...................................................................................................... 26

4.2.1.

Zero Air Check (Purge Cycle) ....................................................................................... 27

4.2.2.

Sheath Flow Check ....................................................................................................... 28

4.2.3.

Leak Check ................................................................................................................... 28

4.2.4.

Manual Zero Air Check ................................................................................................. 29

4.2.5.

Fibre Span Check.......................................................................................................... 29

4.2.6.

Laser Current Check. .................................................................................................... 29

4.2.7.

Filter Changes ............................................................................................................... 29

4.2.8.

Cyclone and Inlet Cleaning ........................................................................................... 30

4.2.9.

4.2.10.

5. Calibration .................................................................................................................................... 31

Pump Module Removal ................................................................................................. 30

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Aeroqual Dust Sentry User Guide, March 2013

6. Troubleshooting .......................................................................................................................... 32

7. Specifications .............................................................................................................................. 34

8. Schematic Diagrams ................................................................................................................... 35

8.1. Pneumatics ............................................................................................................................ 35

Sample Mode ................................................................................................................ 35

8.1.1.

Zero Mode ..................................................................................................................... 35

8.1.2.

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.

11.3.2.

11.3.3.

Using the Graphs .......................................................................................................... 45

Setting Alarms ............................................................................................................... 46

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

Added information on

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 Affected pages

May 2011 V1 Initial draft

March 2013 V2

August 2013 V3

October 2013 V4

Improved accuracy and

readability

Updated for DS 1.2

Orbit Data and Gatetel

Modem

All

All

Pg. 10-11 and

Pg.44-47

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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

Auxiliary Module
(Optional)

Analogue Output
Module (Optional)

Power to Sensor
Relay

RS232 to USB
Adapter

Sample Filter

Purge Filter

Pump Module

Sample Filter
(Optional)

Modem (Optional)

Alarm Relay

Control Module

Note: 12 VDC Power Supply mounted externally at base

The key components of the Dust Sentry are described below.

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Aeroqual Dust Sentry User Guide, March 2013

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

1.1.1. Electrical connections to Nephelometer

The electrical connections to the Nephelometer are summarised below:

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.

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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Aeroqual Dust Sentry User Guide, March 2013

Front

flow adjuster

connection

Fibre span switch

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.

Purge air line with

Sample line

12VDC power

Power on LED

RS485 bus cable

Inlet heater connector

Cable from optical engine.

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).

Display

2.1mm 12VDC relay
switched Power output

RJ45 RS485

2 way Bus relay
activation

6 way Alarm Relay

Top

DB9 RS232

4 way T/RH

SD Card Slot

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Aeroqual Dust Sentry User Guide, March 2013

LED on)

Bottom

Programming Port

Controller 12VDC

RS232

power input

Off/On switch with LED.
Depress to power on (blue

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.

Programming Dip
Switch (position is
important)

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

ON OFF OFF OFF

OFF ON OFF OFF

ON ON OFF OFF

Default - standard Auxiliary module with AN1, AN2, Freq

Vaisala WXT520 with RS232 communication + AN1, AN2, Freq

Vaisala WXT520 with RS232 communication + Cirrus MK427 Noise

Wind Sonic with RS232 communication + AN1, AN2, Freq

OFF OFF ON OFF

ON OFF ON OFF

Wind Sonic with RS232 communication + Cirrus MK427 Noise

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

ON OFF ON OFF

OFF ON ON OFF

ON ON ON OFF

OFF OFF OFF ON

12VDC Power
Connectors

Status LED

RJ45 Connectors
for RS485 bus

Default - standard Auxiliary module with AN1, AN2, Freq

Cirrus MK427 Noise module only

Met One MSO with RS232 communication + Cirrus MK427 Noise

Met One MSO with RS232 communication + AN1, AN2, Freq

Met One 034B analogue module + Cirrus MK427 Noise

Pin 1

Pin 12

Programming
Port

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

Programming Dip
Switch

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Aeroqual Dust Sentry User Guide, March 2013

Example of wiring:

Wind Sonic

Vaisala

Met One MSO

Met One 034B

Cirrus MK:427

(Pin 1) GND,

SIGNAL GND

(Pin 1) GND for

operating, data &

heating

(Pin 1) GND,

SIGNAL,

COMMON, SHIELD

(Pin 1) GND (Pin 12) VCC (Pin7) WD (Pin 9) WS

(Pin 1) GND,

ACTUATOR GND

(Pin 2) 12V (Pin 5) RX (Pin 6) TX

(Pin 2) 12V for

operating & heating

(Pin 2) 12V (Pin 5) RX (Pin 6) TX

(Pin 2) 12V, LOOP

IN

(Pin 5) RX (Pin 6) TX

(Pin 8) LOOP OUT

ACTUATOR IN

(Pin 12)

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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Aeroqual Dust Sentry User Guide, March 2013

1.7.1. Specifications

Features

Incorporates Telit HE910-DG
module

Frequency bands

Power supply

Two outputs optocouplers open collector drive 100ma

ADC and GPIO inputs

Communication

Antennas GSM/UMTS GPS via SMA connectors

Mechanical Description

Weight

Dimensions(max) L x W x H

83mm x 64mm x 34mm 3.26inch x 2.51inch x 1.33inch

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 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

180g (6.35oz)

0.4 lb

Case material Aluminum

Environmental Requirements

-20°C to +55°C

-4°F to 131°F

Ambient temperature

The module is fully functional in all the temperature range

Operating temperature range

Humidity 5% - 85%

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.

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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Aeroqual Dust Sentry User Guide, March 2013

Coil

Normally Open

B

Normally Open

A

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.

Common A

Normally Closed A

Relay Internal Schematic

Common B

Normally Closed B

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Aeroqual Dust Sentry User Guide, March 2013

A B C

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

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

Caution: The high voltage mains supply must be wired by a certified electrician

(Blue)

(Yellow/Green)

(Brown)

iv. Connect power to Inlet Tube/Heater inside the enclosure

Heated inlet power cable

2.2. Connect Mains Power

• Locate the power connector terminal which is situated outside the enclosure at the bottom.

in compliance with local electrical regulations.

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

Connector

Plug

Neutral

Terminal block

Earth

2. Feed the power cable through the nut gland
plugs and connector and wire the cable to the
terminal block according to the diagram.

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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Aeroqual Dust Sentry User Guide, March 2013

3. Reconnect into the connector
ensuring the plugs are fitted securely
and the nut gland tightened.

Live

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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Aeroqual Dust Sentry User Guide, March 2013

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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Aeroqual Dust Sentry User Guide, March 2013

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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Aeroqual Dust Sentry User Guide, March 2013

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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Aeroqual Dust Sentry User Guide, March 2013

•

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.

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

SMS Message

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.

Search monitor Searches for available Dust Sentry monitors
Connect to Monitor Connects to Dust Sentry
Start Data Logging Starts data logging from the Dust Sentry
Stop Data Logging Stops data logging from the Dust Sentry

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File

Aeroqual Dust Sentry User Guide, March 2013

Export Logged Data Exports logged data from the Dust Sentry
Import Files Imports file (aql file)
Download Files 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 Zips the database
Unzip database Unzips the database (prompted by a warning message)
Exit Ctrl X Exits the Dust Sentry software

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3.4.2.

Configuration Configures Monitor ID, Sensor Modules and Measurement Units
Operations Configures the Data logging interval and Alarm and Analogue Output

Test Connection Tests the connection to the Dust Sentry
Configure GPRS Modem Configures the SIM card properties and operating mode of modem
Mobile Recipients Configures mobile SMS alerts
Email Recipients Configures email alerts
Communication Port Allows setup of the serial COM port and TCP/IP port to communicate

3.4.3.

Graph  Real Time Graphs real time data from the Dust Sentry
Graph  Logged Data Graphs Logged data from the Dust Sentry
Table  Real Time Tabulates the real time data from the Dust Sentry
Table  Logged data Tabulates the logged data from the Dust Sentry

Setup

functions

with the Dust Sentry

Data

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3.4.4.

View Configuration Views the configuration settings of the Dust Sentry
Poll Data (Ctrl D) Polls data from the Dust Sentry (data will appear either in the real

Switch User Change from User to Engineer mode
Change Login User Password Changes the password required for User login
Update Real Time Clock Updates the real time clock to that of the computer
(prompted with a confirmation message)
Reset Timer Resets the timer
Reset Controller Performs a software reset of the Dust Sentry Control Module

3.4.5.

Control Factors Displays the Dust Sentry’s Gain and Offset factors
Zero Calibration 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.

Tools

time table or real time graph depending on which is open)

Calibration

3.4.6.

Sensor Module Settings Displays the sensor module settings. Click on download all to

Diagnostics (Available in Engineer Mode)

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 Auto zero cycle time interval (minutes)

H0 0.01 The baseline output of 80180 (V)

H1 1 Not used (fixed as 1)

H2 10.077

PWMH 35 Not used

PWML 3 Factory Module Type. Do not modify

Gain 1 Factory Gain. Do not modify

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)

Calibration parameter taken from Met One calibration certificate
(Bx100)

Calibration parameter taken from Met One calibration certificate
(Mx1000)

Parameter

PM10 Laser (mA)

PM10 Volt (V)

PM10 STemp (C) 80180 engine temperature

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Meaning

Laser current stable (18 ±3 mA)

Output in Volts (0 to 5V) will vary with concentration

Procedure

Section

Frequency

4. Maintenance

4.1. Maintenance Schedule

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

Notes 1: Suggested intervals for maintenance procedures may vary with sampling intensity
and environmental conditions.

Contact Aeroqual 24 Months

Note 2: All checks should be carried out during the initial commissioning of the Dust Sentry

4.2. Maintenance Procedures

4.2.1.

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

Sample Flow Check

The PM inlet flow can be adjusted via the flow adjuster on the exhaust and purge line.

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Aeroqual Dust Sentry User Guide, March 2013

• 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.

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.

Zero Air Check (Purge Cycle)

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.

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

Sheath Flow Check

4.2.4.

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.

Leak Check

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.

Sample connection
(remove to check
module)

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Aeroqual Dust Sentry User Guide, March 2013

F

ilter

F

ilter

4.2.5.

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.

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

Manual Zero Air Check

Fibre Span Check

4.2.7.

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.

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.

Sample

Laser Current Check.

Filter Changes

Clean
Filter

Dirty
Filter

Purge

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Aeroqual Dust Sentry User Guide, March 2013

4.2.9.

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.

Cyclone and Inlet Cleaning

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.

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:

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.

Pump Module Removal

1. A leak is discovered

2. The pump requires replacement

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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

Sample and/or purge filters dirty

Gain factors incorrect

Offset factor incorrect

Check sample flow and adjust to correct
value using flow adjusters

Replace filters

Perform span calibration

Perform zero calibration

“NR” or “9999” in Data
table(No response)

Occasional NR or
“9999” in Data Table

Frequent “9999”

No communication over
RS232

PC Data logging
stopped

No Response from Sensor
module. Not connected correctly.

Termination dongle not installed

Bus cable

Computer too slow

RF noise in environment.

RS485 bus cable is faulty

Module RS485 chip faulty

RF noise in environment.

RS232 cable disconnected

Control Module Failed

USB to serial hub not working

Check the electrical connector on the
sensor module is firmly connected

Install termination dongle

Check RS485 bus cable continuity

Test with a faster computer.

Try to reduce RF noise

Replace bus cable

Remove one module at a time to identify
faulty module and then replace.

Try to reduce RF noise

Reconnect cable

Replace Control Module

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

IP Modem connection
lost

MRK-D-0014, V4 Page | 32

Card not correctly installed in slot.

Data logging interval set too
large.

Data card module fault

SIM card account in debt

Network down

Aeroqual Dust Sentry User Guide, March 2013

Turn off Dust Sentry and install card in slot
correctly.

Set logging interval in configuration to a
lower interval.

Send control module to factory for
replacement module.

Pay SIM account

Wait for network

Signal strength low Install high gain antenna or move

instrument to site with better coverage.

Low Sensitivity Laser is old

The laser current can be
measured in diagnostics mode

Laser needs replacing.

Send to your authorised distributor or

contact Aeroqual technical support.
using Dust Sentry software. If
above 20 mA then fault

Low Sensitivity 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

Laser is old

Optics need cleaning

Send to your authorised distributor or

contact Aeroqual technical support.

Laser needs replacing.

Negative readings Purge filter new and shedding

particles

Purge flow zero

Purge filter dirty

Fibre Span has

Dirty Optics

changed significantly
since installation

Laser is old

Readings flat Laser failed (check laser current)

Photo-detector failed

Send to your authorised distributor or

contact Aeroqual technical support.

Run zero cycles until purge filter no longer

shedding particles.

Adjust purge flow

Replace purge filter

Optics need cleaning

Send to your authorised distributor or

contact Aeroqual technical support.

Laser needs replacing.

Send to your authorised distributor or

contact Aeroqual technical support.

Laser needs replacing.

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

Range

Accuracy

Cut points available

Sample flowrate

Inlet

Alarm

Data logging

Display

Output data units

Averaging Period

Reference filter

Software

Near forward light scattering nephelometer

0-2000µg/m3

+/-(2 ug/m3 + 5% of reading)

PM1, PM2.5, PM10 or TSP

2.0 LPM

36cm heated inlet

Relay, Email and SMS (Optional)

2GB SD card (>15 years data storage)

4 Line Alphanumeric

µg/m3

1-60 minutes

47mm GFA circular filter (Optional)

Data logging & configuration software included

Outputs

Mounting

Wireless communication options

Meteorological sensor options

Environmental operating range

Power requirements

Enclosure

Weight

Conformity

Certification (Applied for)

RS232, 4-20mA / 2-10V (optional)

Pole, tripod or wall mounting

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

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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: Measures air temperature and relative humidity
Specifications 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 0-60 m/s
Accuracy ±2% @ 12 m/s
Resolution 0.01 m/s

Wind Direction

Range 0-359° (no dead band)
Accuracy ±3% @ 12 m/s
Resolution 1 °

Mechanical

External construction &
protection
Size & Weight 142 x 160 (mm) ; 0.5 Kg

Environmental

Operating range

LURAN S KR 2861/1C ASA/PC;
IP65

-35°C to +70°C; <5% to 100%
RH

9.3. Met One 034B

Description: 3-cup anemometer and vane designed to measure wind

speed and direction

Specifications: For full details visit the company website

MRK-D-0014, V4 Page | 37

Aeroqual Dust Sentry User Guide, March 2013

www.metone.com

Wind Speed

Range 0-75 m/s

Accuracy

Resolution 0.7998 m/s

Wind Direction

Range

Accuracy ±4°
Resolution < 0.5°

Mechanical

Finish Clear anodized aluminum
Sensor Weight 0.81kg

Environmental

Operating range -30°C to +70°C

±0.12 m/s @ < 10.1 m/s
±1.1% @ > 10.1 m/s

Mechanical 0-360°
Electrical 0-356°

9.4. Met One MSO

Description: Measures wind speed and direction; air temperature; relative

humidity; and barometric pressure

Specifications: For full details visit the company website www.metone.com

Wind Speed

Range 0-50 m/s
Accuracy ±2%
Resolution 0.1 m/s

Wind Direction

Range 0-360°
Accuracy ±5°
Resolution 1°

Air Temperature

Range
Accuracy
Resolution 0.1°C

Relative Humidity

Range
Accuracy
Resolution

Barometric Pressure

Range
Accuracy
Resolution

-40°C - +60°C
±0.5°C

0-100%
±4%
1%

500-1100 mbars
± 2 mbars

0.1 mbar

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Aeroqual Dust Sentry User Guide, March 2013

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

Wind speed and Direction
Speed

Measurement range
Accuracy

Direction

Measurement range
Accuracy

Liquid Precipitation

Rainfall

output resolution
accuracy
Rainfall duration
output resolution
Rain intensity
range
output resolution

Barometric Pressure

Measurement range
Accuracy

Air Temperature

Measurement range
Accuracy @ +20 °C
(+68 °F)

Relative Humidity

Measurement range
Accuracy

0-60 m/s
±0.3 m/s or ±3% (0-35 m/s); ±5% (36-60
m/s )

0-360°
±3°

cumulative accumulation after latest
reset

0.01 mm, 0.001 inches
5%
counts each 10 s increment when droplet
detected
10 s
one-minute running average in ten­second steps
0-200 mm/h

0.1 mm/h, 0.01 inches/h

600-1100 hPa
±0.5 hPa @ 0 to 30 °C (+32 to +86 °F);
±1 hPa @ -52 to +60 °C (-60 to +140 °F)

-52 to +60 °C (-60 to +140 °F)
±0.3 °C (±0.5 °F)

0-100 %RH
±3 %RH (0-90 %RH); ±5 %RH (90-100
%RH)

www.vaisala.com

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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 ‘A’ weighting SPL output in the form

Frequency Weighting dB(A) to IEC 61672-1:2002

Time Weighting Factory set to Fast (‘F’) IEC 61672-

Automatic Calibration Electrostatic Actuator System with DC

Measurement Range 30 – 100dB(A)

Current Loop Output Iout = 0.1mA/dB

Dimensions 1m length

Weight 4.5 Kg

Mounting 240mm x 30mm diameter pole

External Power +12V DC in

Output Cable 10m as standard

of a 4-20mA loop

1:2002

voltage control

Mounting Kit provided
(2 U-brackets, 4 nuts, 3 Jubilee Clips)

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Aeroqual Dust Sentry User Guide, March 2013

1.

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

4.

2.

5.

3.

10.2.

• If PM monitoring is related to human exposure, the sampling inlet height should be positioned

• If PM monitoring is related to specific emission sources, the position of the sampling inlet can

• If more than one Dust Sentry, or any other particulate instrument, is being used at the site, the

• If the Dust Sentry inlet is the highest point at the site, a lightning rod must be installed to

Inlet height

in the “breathing zone”. This is located between 2 and 15 meters above ground level.

be more flexible. It is more important that there is no obstruction between the approaching air
from the emission source and the sampling inlet.

height of the inlets should be uniform.

prevent damage to the unit during electrical storms.

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10.3.

• The meteorological conditions of the site should be taken into consideration when positioning

• The inlet should be at least 1 meter away from any objects that could potentially influence the

• Avoid overhead high-voltage cables which may cause electrical interference with the

• Demolition/construction activities and change to normal transport patterns due to road works

10.4.

• The intended data capture rate should be considered when positioning the Dust Sentry. If

• The positioning should allow for routine maintenance checks to be performed safely by

• If using a tripod, ensure the tripod legs are bolted to the ground to prevent the unit from

Measurement Interference

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.

airflow characteristics e.g. trees, vertical surfaces or walls.

sampling equipment.

etc. can significantly affect the data. Ensure a record of such events is kept to account for
unexpected peaks in concentration.

Safety

data capture above 90% is essential, the unit should be located in an area which has 24 hour
access available.

personnel.

falling. Ensure the Dust Sentry is in a secure location to avoid vandalism or theft.

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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

Global Sim supplied by Aeroqual

5-30VDC, supplied by instrument

Internet Explorer (7+), Chrome, Safari

Unlimited text/SMS, email

Up to 20, dynamically configurable

RAID, clustered storage, multi-site

3G GSM/GPRS

KORE Telematics

RS232

149 x 81 x 31 (mm)

-20 to +70°C

Web-based

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.

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.

Note: The time intervals that can be shown are: 3 months, 1 month, 7 days, 24 hours, 3 hours,
1 hour and 15 minutes.

Using the Graphs

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”

•

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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Click on the grey button to zoom out

11.3.2.

To set an alarm email Aeroqual at [e-mail] 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 [e-mail] or SMS +64 21 123

Once the alarms have been configured they are visible from the Options  Alarm Information view.

11.3.3.

Setting Alarms

456)

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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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: [e-mail]. 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: [phone]
Fax: [phone]
Email: [e-mail]

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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 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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