Campbell | BlackGlobe | Weather Station Review - Cattle Heat Load Toolbox

final report
Project code:
B.FLT.0386.A
Prepared by:
Christine Killip, Lisa Smith and
Tania Haigh
Katestone Environmental
Date published:
December 2013
ISBN:
9781925045604
PUBLISHED BY
Meat & Livestock Australia Limited
Locked Bag 991
NORTH SYDNEY NSW 2059
Part A – Weather station review
Meat & Livestock Australia acknowledges the matching funds provided by the Australian
Government to support the research and development detailed in this publication.
This publication is published by Meat & Livestock Australia Limited ABN 39 081 678 364 (MLA). Care is taken to
ensure the accuracy of the information contained in this publication. However MLA cannot accept responsibility for
the accuracy or completeness of the information or opinions contained in the publication. You should make your
own enquiries before making decisions concerning your interests. Reproduction in whole or in part of this
publication is prohibited without prior written consent of MLA.
Part A - Weather station review
Table of Contents
1.
Introduction .......................................................................................... 6
2.
Scope of work ....................................................................................... 6
3.
Weather station requirements ............................................................. 7
3.1
3.2
3.3
3.4
3.5
Hardware ............................................................................................ 7
Communication ................................................................................... 7
Weather station costing ....................................................................... 8
3.3.1 Base cost................................................................................. 8
3.3.2 Maintenance costs ................................................................... 9
Uncontrollable events .......................................................................... 9
Where to site a weather station ........................................................... 9
4.
Weather station overview - basic requirements .............................. 11
5.
Weather station costs and options for suitable stations ................ 13
6.
Weather station summary matrix ...................................................... 15
7.
Review of weather stations ............................................................... 17
7.1
7.2
7.3
7.4
Pacific Data Systems (PDS) custom weather station......................... 17
7.1.1 Indicative costing ................................................................... 17
7.1.2 Sensor accuracy .................................................................... 18
7.1.3 Installation requirements ........................................................ 18
7.1.4 Data access ........................................................................... 18
7.1.5 HLI calculation method .......................................................... 18
7.1.6 Maintenance requirements .................................................... 18
Saros custom weather station ........................................................... 19
7.2.1 Indicative costing ................................................................... 19
7.2.2 Sensor accuracy .................................................................... 20
7.2.3 Installation requirements ........................................................ 20
7.2.4 Data access ........................................................................... 20
7.2.5 HLI calculation method .......................................................... 20
7.2.6 Maintenance requirements .................................................... 20
7.2.7 Rental option ......................................................................... 21
7.2.8 Managed service approach.................................................... 21
Davis Vantage Pro 2 Plus ................................................................. 23
7.3.1 Indicative costing ................................................................... 24
7.3.2 Sensor accuracy .................................................................... 25
7.3.3 Installation requirements ........................................................ 25
7.3.4 Data access ........................................................................... 25
7.3.5 HLI calculation method .......................................................... 25
7.3.6 Maintenance requirements .................................................... 26
HOBO U30 ........................................................................................ 27
7.4.1 Indicative costing ................................................................... 27
7.4.2 Sensor accuracy .................................................................... 28
7.4.3 Installation requirements ........................................................ 28
7.4.4 Data access ........................................................................... 28
7.4.5 HLI calculation method .......................................................... 28
7.4.6 Maintenance requirements .................................................... 29
Page 2 of 41
Part A - Weather station review
7.5
7.6
7.7
7.8
8.
Campbell Scientific custom weather station ...................................... 30
7.5.1 Indicative costing ................................................................... 30
7.5.2 Sensor accuracy .................................................................... 30
7.5.3 Installation requirements ........................................................ 31
7.5.4 Data access ........................................................................... 31
7.5.5 HLI calculation method .......................................................... 31
7.5.6 Maintenance requirements .................................................... 31
Feedlot Weather Station (MEA) ......................................................... 32
7.6.1 Indicative costing ................................................................... 32
7.6.2 Sensor accuracy .................................................................... 32
7.6.3 Installation requirements ........................................................ 33
7.6.4 Data access ........................................................................... 33
7.6.5 HLI calculation method .......................................................... 33
7.6.6 Maintenance requirements .................................................... 33
Weather Maestro Weather Station (Environdata) .............................. 35
7.7.1 Indicative costing ................................................................... 35
7.7.2 Sensor accuracy .................................................................... 35
7.7.3 Installation ............................................................................. 35
7.7.4 Data access ........................................................................... 36
7.7.5 HLI calculation method .......................................................... 36
7.7.6 Maintenance requirements .................................................... 36
Weathermaster 2000 Weather Station (Environdata) ........................ 38
7.8.1 Indicative costing ................................................................... 38
7.8.2 Sensor accuracy .................................................................... 38
7.8.3 Installation ............................................................................. 39
7.8.4 Data access ........................................................................... 39
7.8.5 HLI calculation method .......................................................... 39
7.8.6 Maintenance requirements .................................................... 39
Weather station service/purchase locations ................................... 41
Tables
Table 1
Feedlot Weather Station - Basic requirements ............................. 11
Table 2
Weather station purchase/maintenance costs and options .......... 13
Table 3
Weather station summary rating matrix ........................................ 16
Page 3 of 41
Part A - Weather station review
Abstract
A range of weather stations were reviewed in order to provide recommendations for
feedlot operators that may need to collect weather data for feedlot accreditation in
future and for calculations of HLI and AHLU to effectively manage heat stress events.
Features including purchase and ongoing costs, parameters measured, accuracy,
functionality and durability were included in the review and used to calculate an
overall score for each weather station considered. While the purchase costs of
weather stations ranged from several hundred dollars to greater than ten thousand
dollars, the weather stations with the highest overall score were also relatively lowpriced. A trade-off between price and accuracy was found. Because of this, it is
important that feedlot operators understand the uncertainties in HLI and AHLU that
would result from uncertainties in measurements from their weather station prior to
purchase, and also once the weather station is operational. A range of options to
transfer data from the weather station to (e.g. an office or website) were found, which
should be investigated on a site-by-site basis as the best option depends on location,
mobile coverage, and budget.
Page 4 of 41
Part A - Weather station review
Executive summary
Katestone was commissioned to review weather stations available for purchase to
allow MLA to provide better information to feedlot operators who may need to collect
weather data at their feedlot. Models, prices and specifications were gathered from
internet websites, manufacturers, and through discussion with some suppliers who
were willing to create a customised weather station specifically for feedlot operators.
A ranking system was designed that accounted for the following features:
 purchase price
 ongoing maintenance and repair costs
 accuracy of measurements
 functionality
 durability
The prices of available weather stations ranged from several hundreds of dollars to
approximately $9,000. The lowest-priced models did not have enough sensors to
calculate HLI and are therefore not suitable. The ongoing maintenance costs of most
models were relatively low, and it is recommended that feedlot operators keep their
weather station clean to ensure accurate measurements regardless of model.
Replacement parts each few years rather than calibrations are recommended for the
lower priced weather stations. The highest ranked weather stations were relatively
low cost, easy to install and maintain, and reasonably durable. However, some of the
higher priced options were more accurate. The accuracy of measurements
determines the uncertainty in HLI and AHLU calculations, and it is important that
feedlot operators understand this.
Discussion with suppliers identified that a number of options are possible to transfer
data from the weather station to an on-site computer or website. This is required in
order to upload data through the internet to the Heat Load Data Network. The
communication option is best selected on a site-by-site basis, as options include
WIFI or radio transfer, mobile network and satellite options, and the best option
depends on location, mobile coverage and budget.
A set of general guidelines on where to site a weather station were also provided,
based on the requirements specified in the Australian Standard (which contains strict
siting guidelines that it may not be practical to meet at all sites).
Page 5 of 41
Part A - Weather station review
1. Introduction
To address the recommendations from a review of the impacts of heat stress on lot
fed cattle associated with weather conditions during the 2012-13 summer, Meat &
Livestock Australia (MLA) was requested to provide better information to feedlot
operators regarding suitable on-site weather stations.
This document comprises a review undertaken by Katestone of available weather
stations. The aim of the review was to provide feedlot managers with one document
that details suitable weather stations to meet the requirements of monitoring heat
load at a site. There are a wide variety of weather stations available from inexpensive
hobbyist units to scientific stations which meet with the Australian Standards. This
review covers the full range of stations and identifies units that, as a minimum, meet
the accreditation requirements. The review also looked at functionality, durability,
maintenance requirements and operating costs to determine units that provided the
best value for money.
2. Scope of work
Collection of weather data may be made mandatory for feedlot accreditation in the
future. This is likely to include:


real time collection of temperature, relative humidity, solar radiation, wind
speed, wind direction and rain
daily monitoring of cattle along with HLI and AHLU
Wind direction and rain are not required to calculate HLI or AHLU. Solar radiation
and temperature are not required if black globe temperature is available.
This review focused on delivering options to meet these requirements and covers the
following scope:







Reliability
Functionality (with reference to the project objectives)
Affordability (upfront and ongoing costs)
Durability
Physical suitability for application at feedlots
Maintenance and serving requirements and availability of service suppliers
Supplier quality
The operating costs for each system will vary depending on the location of the feedlot
and proximity to the service provider. The availability of internet connection, power
and other site requirements will also impact on the cost of each system. The review
has attempted to incorporate these into a matrix to provide an easy process for each
site to determine the most suitable weather station(s) for their needs.
Page 6 of 41
Part A - Weather station review
3. Weather station requirements
3.1
Hardware
The sensors listed below are required to calculate HLI and AHLU. These sensors
should be mounted approximately 2m above the surface.



Black globe temperature or solar radiation and free air / dry bulb temperature
Wind speed
Relative humidity or wet bulb temperature
The above parameters need to be logged with an interval of no longer than 1 hour.
Rainfall is listed as one of the parameters required for accreditation. As rain is not
used in real time in the HLI calculation, it was assumed that a manual rain gauge is
adequate for this purpose.
Calculation of the HLI (and AHLUs) within the data logger is an advantage as
immediate information will be available to assess the heat load situation.
3.2
Communication
If the station does not calculate HLI or AHLU in the logger, there is a need to
download the data from the weather station in order to calculate HLI and then AHLU.
The HLI and AHLU can be calculated on a computer using a spreadsheet or by a
simple customised program. Alternatively, the data can be uploaded to the MLA Heat
Load Data Network (HLDN), which will then calculate the HLI and AHLU. The HLDN
is operated by Katestone Environmental in conjunction with the forecasting service.
Options for transferring data from a weather station onto a computer capable of
calculating HLI and AHLU include:



physically walking out to the weather station and downloading data e.g. by
plugging a USB drive into the weather station, then uploading the data onto a
computer
WIFI or radio link (see below): this is a wireless data transfer from the data
logger to an on-site computer less than several hundreds of metres from the
weather station
Cellular data modem or satellite connection (see below): this transfers data
using a mobile network and the data can be accessed on any computer that
is connected to the internet
To ensure maximum benefit from a weather station, a connection to the internet is
required in order to connect the weather station to the Heat Load Data Network. This
can be done in various ways:

WIFI or radio link to site computer: If a weather station sends data through
a WIFI or radio link to an on-site computer, and if the computer is connected
to the internet, then the data can be automatically uploaded to the Heat Load
Data Network by a scheduled task. This requires line of sight between the
weather station and the computer, and typically works if the distance between
them is a few hundred metres or less.
Page 7 of 41
Part A - Weather station review


Cellular data modem: A weather station can be connected directly to the
internet via a cellular data modem which would be mounted on the weather
station, if there is mobile coverage at the weather station location. These
modems use a mobile phone network to transfer data (e.g 3G, Next G or
GSM) and so a mobile SIM card and data plan is required. Some companies
(e.g. Saros) can arrange and manage this, otherwise the user will need to
arrange for the connection and manage the ongoing costs. As a guide a
typical data plan and SIM card will cost about $20 per month. This option
would allow weather station data to be uploaded directly to Katestone without
needing to set up a scheduled task on an on-site computer, and the data
could be viewed on a computer that is connected to the internet.
Satellite: This option is similar to the cellular data modem but instead of using
the mobile phone network it uses a satellite network to transfer data. A
satellite modem or terminal would be mounted on the weather station. This
option is recommended for locations with poor mobile coverage. The costs
are similar to the mobile option ($20 per month connection fee) but data
upload costs are extra. Assuming data only needs to be uploaded once a day
the cost would be about $5 per month. More frequent uploads could cost
more. There is also an option to choose the upload frequency and change it if
more frequent uploads during an impending heat event are required.
Various weather station options have data plans that include the delivery of weather
station data to a web site.
3.3
Weather station costing
3.3.1 Base Cost
As a way of ensuring that weather station costings were comparable, a minimum
specification in terms of sensors, components and data access was developed to
determine the base cost of each AWS:



Sensors required:
o Black globe or temperature and solar radiation
o Wind speed
o Relative humidity
Components required:
o Solar panel and battery
Data access:
o Local data access only
Where provided costs for optional functions and components have been included for
each weather station considered, these include:
 Option for integrating HLI and ALHU calculation into the datalogger firmware
or software (if not included in base cost)
 Remote telemetry options and data plan estimates where provided
All ‘Base Costs’ provided are GST exclusive and should be taken as indicative as at
November 2013. Costs for optional functions/components are not included in the
base cost estimate.
Page 8 of 41
Part A - Weather station review
3.3.2 Maintenance Costs
For each AWS considered suitable, an indicative 10 year maintenance cost has been
estimated. These estimates have been developed in consultation with the AWS
supplier. Where there was an option of on-site services compared to operator
replacement the lower cost option has been included. All maintenance costs are only
indicative and generally based on a conservative approach to sensor/component
maintenance or replacement recommendations. Costs can be greatly affected by
general system maintenance in the first instance as well as the characteristics of the
operating environment.
3.4
Uncontrollable events
During the passage of Ex-Tropical Cyclone in January this year most sites in its path
experienced loss of power and mobile communication networks were down. It is
worth considering how HLI and AHLU would be calculated if either power or mobile
network coverage was lost.
In the event of a power failure weather stations may require a battery backup or solar
panel to maintain collection of data, unless there is a backup generator on site. A
method for calculating the HLI in this event should be developed. A laptop could be
used for these calculations for a weather station that does not calculate it in the
logger.
For sites relying on the mobile network to upload the data to provide the HLI and
AHLU calculations, consider if there is a back up (e.g. USB connection) or similar
manual method to download the data if the mobile network is down. Some units have
a LCD screen to allow visual inspection of the data. In this event internal calculation
of the HLI and AHLU is recommended.
The satellite option may be more reliable during extreme weather events as the
satellites themselves will not be damaged during the event, whereas mobile network
or other infrastructure may be. However, the same planning is needed to ensure a
continued power supply to the weather station and satellite terminal.
3.5
Where to site a weather station
The weather station should be sited so the variables measured are representative of
the general surrounds. Subtle variations in the environment may mean that the data
are not representative. For example, a tree shadow falling across a BGT sensor will
result in HLI and AHLU values that are lower than they should be for as long as that
shadow is on the sensor.
Weather stations operated by the Australian Bureau of Meteorology have strict siting
requirements and have to meet an Australian Standard (AS 3580.14). The siting
requirements from the Australian Standard for wind, temperature, relative humidity
and solar radiation are summarised below.
Wind sensors:
 measurements at a height of 10m over a flat open area clear of obstructions
 to be clear of obstructions, this means there should be a clearance distance
of at least 10 times the height of the obstruction for wind sensors
Temperature and relative humidity:
Page 9 of 41
Part A - Weather station review






mounted over a plot of open level ground at least 9m in diameter free of
obstructions, and freely exposed to sunshine and wind
to be clear of obstructions, this means a clearance distance of at least four
times the obstruction height
located at least 30m from large paved areas and not close to hollows or
ridges or other changes in terrain
area should ideally be unwatered short grass, or natural earth (not concrete)
should not be located close to artificial or natural sources of moisture
measurements at 2m or higher above ground
Solar radiation and black globe temperature:
 an upward-looking solar radiation sensor should be free from any obstructions
above the sensor
 no shadows should be cast on the sensor
 should be located away from light-coloured walls or other objects likely to
reflect sunlight
If is sometimes not practical to meet these standards at a particular location. In these
instances, the station should ideally be located:


on a flat cleared area - either a grassy surface, or one that is similar to the
feedlot
clear from obstructions such as buildings and trees (a rule of thumb would be
to locate the weather station at a distance from any obstruction of ten times
the height of the obstruction)
The station should not be:




in a gully or other depression
on a geological formation such as a rock outcrop
on or near steep slopes, cliffs, or ridges
on a veranda or under an awning
If there is a solar panel, this should face north.
Page 10 of 41
Part A - Weather station review
4. Weather station overview - basic requirements
Table 1
Feedlot weather station - basic requirements
Required
Model
Manufacturer
Base Cost
($ excl
GST)
BGT preferred
Wind
speed
Relative
humidity
Air temp
2
Solar
2
radiation
BGT
3
Solar
power
Suitable
Deluxe Weather Station
Celestron
$170
Y
Y
Y
N
N
N
N
Wireless Weather
Station
Instrument
Choice
$194
Y
Y
Y
N
N
Y
N
Lacrosse professional
weather station
Lacrosse
$359
Y
Y
Y
N
N
N
N
WMR200A Advanced
Pro Weather Station
Oregon
Scientific
$500
Y
Y
Y
N
N
N
N
Vantage Vue
Davis
$540
Y
Y
Y
N
N
Y
N
Vantage Pro 2
Davis
$780
Y
Y
Y
N
N
Y
N
Davis Vantage Pro 2
Plus
Davis
$1,620
Y
Y
Y
Y
N
Y
Y
1
Page 11 of 41
Part A - Weather station review
Required
Model
Manufacturer
Base Cost
($ excl
GST)
BGT preferred
Wind
speed
Relative
humidity
Air temp
2
Solar
2
radiation
BGT
3
Solar
power
Suitable
Pacific Data Systems
Custom Weather
Station
Pacific Data
Systems
$1,960
Y
Y
Y
N
Y
Y
Y
Saros Custom Weather
Station
Saros
$4,400
Y
Y
Y
N
Y
Y
Y
HOBO U30
Instrument
Choice
$5,421
Y
Y
Y
Y
N
Y
Y
Campbell Scientific
Custom AWS
Campbell
Scientific
$6,269
Y
Y
Y
N
Y
Y
Y
Feedlot Weather
Station
MEA
$7,350
Y
Y
Y
N
Y
Y
Y
Weather Maestro
Environdata
$7,695
Y
Y
N
N
Y
Y
Y
Weathermaster 2000
Environdata
$8,816
Y
Y
Y
Y
Y
Y
Y
Table notes:
1
Includes, fan aspirated radiation shield, data logger and Weatherlink data access software
2
Solar radiation and temperature are not required if BGT is available
3
Where BGT is available temperature and solar radiation sensors are not required
Page 12 of 41
Part A - Weather station review
5. Weather station costs and options for suitable stations
Table 2
Weather station purchase/maintenance costs and options 1
Features
Weather Station
Estimated
2
base cost
Pacific Data
Systems Custom
*
Weather Station
$1,960
Saros Custom
*
Weather Station
Vantage Pro 2 Plus Davis
HOBO U30
Campbell Scientific
Custom AWS
$4,400
$1,620
$5,421
$6,269
Estimated
ongoing
annual cost
for first 10
3
years
$217
$299
$255
$310
$627
Total cost
over 10 years
(including
purchase and
maintenance)
$4,130
$7,390
$4,170
$8,521
$12,538
Meets
Australian
4
Standard
Estimated
uncertainty
in AHLU
over 8
5
hours
HLI calc
method
Data access
to internet
Data
accessible on
site
In logger
3G connection
included in
base cost
USB
Temp only
27
In logger
Via computer
or 3G Data
modem at
additional cost
LCD, WIFI and
USB
No
27
External
Via computer
or Next G
option at
additional cost
USB or
console
display
No
32
External
GSM included
in base cost
USB, WIFI,
ethernet
options
available
Wind speed
only
27
In logger
Range of
options at
additional cost
Short haul
modem
included in
base cost,
Serial cable.
Wind speed
only
24
Page 13 of 41
Part A - Weather station review
Features
Estimated
ongoing
annual cost
for first 10
3
years
Weather Station
Estimated
2
base cost
Feedlot Weather
Station (MEA)
$7,350
$187
Weather Maestro 6
Channel
Environdata
$7,695
Weathermaster 2000
Environdata
$8,816
Total cost
over 10 years
(including
purchase and
maintenance)
Meets
Australian
4
Standard
Estimated
uncertainty
in AHLU
over 8
5
hours
HLI calc
method
Data access
to internet
Data
accessible on
site
$9,220
In logger
Next G
included as
standard.
USB, other
options
available
Yes
9
$227
$9,960
In logger
Next G
available at
additional cost
Serial cable or
radio link
Yes
17
$227
$11,081
Software
calculation
Next G
available at
additional cost
Serial cable or
radio link
Wind speed
only
17
Note
1
All prices are estimates only, and exclude GST.
2
This does not include installation requiring a site visit by service provider or electrician. This would be additional if needed and will depend on
location of the feedlot and service provider base. Remote telemetry costs and associated data costs are not included.
3
This is an estimate of ongoing maintenance costs. This does not include maintenance requiring a site visit by service provider or electrician. These
will be additional if needed and will depend on location of the feedlot and service provider base.
4
Considers wind speed, relative humidity, and temperature and solar radiation where BGT is not available. There is currently no Australian Standard
accuracy for BGT.
5
Uncertainty is calculated from the instrument error.
*
The PDS and Saros system are not available for immediate delivery. They both require some development and customisation. Saros have
estimated 6-12 weeks lead time for the first system (2 weeks for each system thereafter) and PDS will not have a system available until March 2014.
Page 14 of 41
Part A - Weather station review
6. Weather station summary matrix
To allow a comparison between the weather stations with different accuracies,
functionality and costs a rating system was used to determine the overall score for
each weather station. The information used to determine the score in each category
is presented in Section 7 for each system reviewed. The four categories were:




Functionality
Affordability
Durability
Accuracy
The ratings for functionality were high if a system included a black globe sensor and
also calculated the HLI/AHLU within the units logger. A system also scored points if a
customised program was supplied with the weather station which calculated the HLI
and AHLU values.
Affordability was rated on the 10 year estimated cost for purchase, installation,
maintenance, replacement sensors and data costs. A system with a 10 year cost of
less than $5,000 rated highest with a 5, down to a rating of 2 if the cost was greater
than $20,000.
Durability was difficult to determine as all suppliers indicated that their systems are
robust. Systems that were stated to be industrial quality were rated high as well as
those with no moving parts.
The greatest range in the systems reviewed can be seen in the accuracy of the
sensors and hence the HLI and AHLU values. Based on the instrument accuracy, an
estimate of the worst case error was determined for an 8 hour period during an
extreme event. The additional error associated with use of a solar radiation sensor
rather than a black globe sensor was also considered. An error of less than 5 AHLU
scored the highest with 5, down to a score of 1 if the error was greater than 30
AHLU.
The following table presents the ranking for each system reviewed.
Page 15 of 41
Part A - Weather station review
Table 3
Weather station summary rating matrix
Category rating (1 to 5, 5 is Good)
Model
Manufacturer/Supplier
Score
Functionality
Affordability
Durability
Accuracy
Pacific Data Systems
Custom Weather Station
Pacific Data Systems
5
5
5
2
17
Feedlot Weather Station
MEA
5
4
4
4
17
Weather Maestro
Environdata
5
4
4
3
16
Saros Custom Weather
Station
Saros
5
4
5
2
16
Weathermaster 2000
Environdata
4
3
4
3
14
Campbell Scientific Custom
AWS
Campbell Scientific
5
3
4
2
14
HOBO
/Instrument Choice
Davis/
Instrument Choice
1
4
4
2
11
1
5
2
1
9
HOBO U30
Vantage Pro 2 Plus
Page 16 of 41
Part A - Weather station review
7. Review of weather stations
All prices in the following sections exclude GST.
7.1
Pacific Data Systems (PDS) custom weather station
Pacific Data Systems have designed these systems specifically to meet the needs of
the feedlot industry. They are developing their own Black globe temperature sensor
and dedicated data logger to allow calculation of the HLI (Heat Load Index) in real
time. There will be some lead time required to develop and test the sensors
(expected to be available by March 2014).
7.1.1 Indicative costing
Description
Base price
Cost
(excl GST)
$1,960
Inclusions

Sensors: Ultrasonic wind
sensor, temperature,
relative humidity (Fig 2),
BGT (Fig 3)

Internal HLI/AHLU
calculation

3G cellular data for
remote communications

Solar power and battery

USB connection for local
data retrieval and LCD
screen
Fig.1 PDS AWS with solar panel
Fig.2
Monthly Data
Cost (estimate
only)
Optional

$30
Cost
available on
request
Monthly 3G cellular data
modem costs (est $2030 per month extra)
Ultrasonic wind
speed,
temperature,
relative humidity
sensor
Fig.3

Satellite modem
Black Globe
Temperature
sensor
Page 17 of 41
Part A - Weather station review
7.1.2 Sensor accuracy
Sensor
Accuracy
AS (Australian Standard)
Wind speed
±0.5m/s or 10% winds < 5 m/s
±2 m/s or 1%,
±1m/s or 5% winds > 5 m/s
Wind direction
o
±5 winds < 5 m/s
o
±3
o
±2 winds > 5 m/s
Relative humidity
±4%
±2% (10-90%),
±4% (90-100%)
Air temperature
±0.2 C
BGT
±0.2 C
o
±0.3 C
o
o
-
7.1.3 Installation requirements


Mast (30-50mm diameter)
The system is designed to be installed by the end user - professional installer not
required
7.1.4 Data access

Data can be downloaded locally via the supplied USB port, or remotely via web
portal - 3G or satellite modem.

Sampling frequency and averaging period is customer selectable
7.1.5 HLI calculation method
Based on inputs from the wind speed, black globe temperature and relative humidity
sensors the HLI and AHLUs will be calculated on the logger.
7.1.6 Maintenance requirements
Ultrasonic wind sensor has no moving parts and thus requires no maintenance.
Sensors are field replaceable; replacement sensors are priced as below. Over a ten
year period, recommended maintenance is expected to cost $2,170 or $217
annually.
Component
Maintenance
Cost estimate
Wind sensor (ultrasonic)

Replace every 5-10 year
$500
BGT sensor

Replace every 5-10 year
$260
Temperature/RH sensor

Replace every 5-10 year
$120
Solar panel

Replace every 10 years
$250
Page 18 of 41
Part A - Weather station review
7.2
Saros custom weather station
Saros have designed these systems specifically to meet the needs of the feedlot
industry. They are developing their own instrument data control board to allow
calculation of the HLI in real time. There will be some lead time required to develop
and test the systems. Saros currently provides customized weather stations for the
quarry industry.
7.2.1 Indicative costing
Description
Cost
(excl GST)
Custom
Design
$4,400
Inclusions




Monthly Data
Cost
(estimate
only)
$65
$350/mth
Managed
Service
Option
(estimate
only)
Sensors: wind
speed, temperature,
relative humidity,
BGT
Custom enclosure
Solar panel
Internal calculation
of HLI

Communication
costs are extra (est
$50-$75 per month
extra)

3yr contract for
lease, maintenance
and data plan
Representative Picture of a Quarry
based weather station
Extras
$650

Remote telemetry 3G cellular data
modem including
high gain antenna
Page 19 of 41
Part A - Weather station review
7.2.2 Sensor accuracy
Sensor
Accuracy
AS
Wind speed
±0.5m/s or 10% winds < 5 m/s
±2 m/s or 1%,
±1m/s or 5% winds > 5 m/s
Relative humidity
±4%
Air temperature
±1 C
±0.3 C
BGT
±0.2%
-
o
±2% (10-90%),
±4% (90-100%)
o
7.2.3 Installation requirements
These weather stations do not need to be installed by a professional. Simple rules
and guidelines need to be followed. Saros will provide both written installation
instructions as well as general phone support.
The weather stations can be installed with various methods:



Pole mounted
Roof / structure mounted
Saros can customize brackets / attachments to suit most requirements
The units need to be installed in consideration of the following principles:



Weather stations without solar panels require mains power.
Solar panel units should have the solar panel facing north.
Antenna units need to have the antenna at the highest point achievable.
Saros can provide installation services which will be costed on a quote basis.
7.2.4 Data access



Data is stored locally on the weather station for over 6 months
3G enabled units will be programmed to automatically send the data at
agreed time intervals. The time intervals can be programmed for different
frequencies as needed
Non 3G enabled units will require a laptop to be connected directly or via
WIFI to download the data.
7.2.5 HLI calculation method


Standard methods will be used to calculate the Heat Load Index (HLI) within
the data logger
Saros can customize alerts and warning settings for specific measures
7.2.6 Maintenance requirements
All components typically have a standard manufacturer’s limited warranty for a 12
month period. Saros will provide a guide for how to maintain the units which is
Page 20 of 41
Part A - Weather station review
typically cleaning and visual inspection. The main weather station component is a
marine grade part that requires minimal to no maintenance. The faulty weather
stations or components need to be sent back to Saros’ office in Brisbane at the cost
of the feed lot owner. All servicing for the units will be undertaken at Saros’ Brisbane
office. Saros will maintain spare units in their Brisbane office for emergency
replacements. Units can also be provided on a rental basis.
Sensor/s
Replacement frequency
Cost estimate
Airmar weather sensor
10 years
$1,200
BGT sensor
5+ years
$700
Solar radiation sensor
5+ years
$500
Saros customised control
board
10 years
$600
Modem
5+ years
$650
Solar panel
5+ years
$250
Battery
2 + years
$60
Note - prices are for part replacement and installation undertaken by the feedlot owner under Saros instruction
All recommended sensor and unit replacements can be completed by the user. Over
a 10 year period the scheduled maintenance is expected to cost $2,990 or $299
annually.
7.2.7 Rental option
Saros provide a rental price option for units. The price would vary per unit depending
on the unit type and rental duration. They are currently estimating a rental price of
$500 per month. Prices can be scaled based on duration and unit type.
7.2.8 Managed service approach
Saros uses a managed service approach for pricing their environmental monitoring
services in appropriate scenarios. The key benefit is the offset of capital costs by the
end user. The typical; managed service scenario allows Saros to take full
responsibility for the delivery of the service, including hardware. It allows for inclusion
and control of all the related factors for a successful service:
a.
b.
c.
d.
e.
Hardware provision – installation, monitoring and maintenance
Remote communication and telemetry support
Data reporting and consultation
Support and ‘handholding’
Maintenance
Page 21 of 41
Part A - Weather station review
Current estimation of costs for a typical managed service for a Saros designed
weather station with solar panels and remote telemetry would be:
•
•
•
$350 per month
3 year contract period
Additional SIM costs of $50 to $75 per month
Page 22 of 41
Part A - Weather station review
7.3
Davis Vantage Pro 2 Plus
Davis weather stations are manufactured by David Instruments in America. There is
a wide range of different Davis weather stations ranging from about $500 up to
$6,500. The lowest priced units are not suitable for determining heat load as they do
not include solar radiation. The recommended base unit is the Vantage Pro 2 Plus as
this includes solar radiation. Davis weather stations are sold by a number of suppliers
in Australia (e.g. Instrument Choice and Pacific Data Systems).
Note that some of the Davis systems include a Heat Index. This is NOT the HLI and
should not be used. The Heat Index included in the Davis systems is based on the
Steadman formulation which is for human heat stress.
The NextG option is the base unit as well as a modem that allows data to be
transferred from the weather station via a mobile phone network, and the cost
includes the first 12 months of data access. This can be used in a location with
NextG mobile coverage. With this model, data can be viewed or downloaded through
a website from anywhere with internet connection. After a Telstra NextG Data Sim
card has been purchased, the ongoing cost is approximately $5 per week for data
transfer.
Page 23 of 41
Part A - Weather station review
7.3.1 Indicative costing
Description
Base Unit
Cost
(excl GST)
$1,620
Inclusions

(6162 model)


Next G
connectivity
(alternative
base price)
$6,500
As above plus


Optional
extras
$389
Sensors:
temperature,
rainfall, relative
humidity, barometric
pressure, solar
radiation, UV, wind
speed/direction
Includes Data
logger and
Weatherlink IP
software
Solar panel and
battery

Cellular data
modem.
12 months of data
access (additional
access available at
$120/annum)
Solar powered
wireless repeater
adds 300m line of
sight or typically 60120m (not needed
with Next G option)
Page 24 of 41
Part A - Weather station review
7.3.2 Sensor accuracy
Sensor
Accuracy
AS
Wind speed
±1m/s or 5%
±2 m/s or 1%,
Wind direction
±3o
±3o
Relative humidity
±3% (0 to 90% RH),
±4% (90 to 100% RH)
±2% (10-90%),
±4% (90-100%)
Air temperature
±0.5oC
±0.3oC
Solar radiation
±5%
-
Rainfall
±3% or 0.2mm
±5% (0 – 120mm/hr)
7.3.3 Installation requirements



Solar panel and battery included in standard configuration, can also be connected
to AC as standard
An extra mast or pole is required to mount the unit on. A simple mounting tripod
can be purchased for $199. Alternatively it can be mounted on a user installed
square post.
System is off-the-shelf and can be installed by the end user.
7.3.4 Data access




Instantaneous and limited historical data (last 24 hours) can be viewed on
console display
Local download of historical data requires logger dongle and Weatherlink
software
Remote data access requires $120 annual subscription. Data can be exported to
most popular spreadsheets, databases, and word processing programs.
Choose 1, 5, 10, 15, 30, 60, or 120 minutes. Store up to six months' worth of
data depending on the storage interval.
7.3.5 HLI calculation method
There is no option for HLI calculation to be integrated into data logger firmware or
software. The HLI calculation could be performed either locally or remotely. Both
options require download of a data file and upload of data into a purpose built
calculation platform for determining HLI.
1. Local data access – calculation would require:
 local download of data file
 upload of data into calculation platform
2. Remote data access – calculation would require:
 local download of data file
 upload of data into calculation platform
 remote user would also require Weatherlink software ($190) – each user
required their own copy of the Weatherlink software.
Page 25 of 41
Part A - Weather station review
7.3.6 Maintenance requirements
Davis weather stations are an entry level weather station. Advice from the
manufacturer indicates that the weather station should require only basic
maintenance and that sensors are robust and experience only limited creep.
However in addition to regular inspection and cleaning, the following sensor
replacement schedule would be recommended:
Component
Maintenance
Cost estimate
Wind sensor

Replace at 2.5 and 7.5
years
$200
Solar radiation sensor

Replace at 2.5 and 7.5
years
$200
ISS replacement – all
sensors replaced

Replace every 5 years
Solar panel and battery

Replace every 5 years
$750
1
$280
Table note:
1
Includes $500 for standard ISS replacement, $200 for solar radiation sensor and a freight allowance of
$50
All recommended sensor and ISS unit replacements can be completed by the user.
Over a 10 year period the scheduled maintenance is expected to cost $2,860 or $286
annually.
Page 26 of 41
Part A - Weather station review
7.4
HOBO U30
The HOBO U30 is built by Onset (an American company) and available in Australia
from Instrument Choice. There are lots of options to choose from depending on the
power and communication requirements at a feedlot. Two options have been
selected to provide an estimate of the cost and range of units available.
All electronics are housed in an industrial-grade, tamperproof enclosure. Setup is
quick and easy with all plug-and-play sensors.
7.4.1 Indicative costing
Description
Base option
Cost
(excl GST)
$5,421
Inclusions




Optional
extras
N/A

Sensors:
temperature,
rainfall, relative
humidity,
barometric
pressure, solar
radiation, wind
speed/direction
Tripod and crossarm
Solar panel
GSM
communications
included as
standard First year
data plan included
(approximately
$400 -$540 per
year after the first
year)
A range of
communications
and data
download
including WIFI
options available
with minimum data
plan free
Figure 1 HOBO U30 Weather
Station
Page 27 of 41
Part A - Weather station review
7.4.2 Sensor accuracy
Sensor
Accuracy
AS
Wind speed
±1.1m/s or 4%
±2 m/s or 1%,
Starting
0.78m/s
threshold
–
Wind direction
±5o
±3o
Relative humidity
±2.5% (10 - 90% RH),
±3.5% maximum
±2% (10-90%),
±4% (90-100%)
Air temperature
±0.21oC
±0.3oC
Solar radiation
±10W/m2 or ±5%
-
Rainfall
±1%
±5% (0 – 120mm/hr)
7.4.3 Installation requirements


The system is designed to be installed by the end user - professional installer
not required
All sensors are plug-and-play
7.4.4 Data access




GSM option automatically uploads the data to a HOBOlink website from this
website and data can be viewed online as well as archives downloaded.
WIFI option also uploads automatically to HOBOlink website.
Maximum logging rate of 1 minute, although the data is only uploaded every
10 minutes, 512 kB data storage with non-volatile flash memory
Alternatively data can be manually downloaded from the unit logger via a
USB connection
Note that the only option for mobile coverage is via the GSM network. Feedlots
should check their area coverage before selecting this option.
7.4.5 HLI calculation method
The HLI calculation could be performed either locally or remotely in provided
software. Both options require download of a data file through HOBOlink and upload
of data into a purpose built calculation platform for determining HLI.
1. Local data access – calculation would require:
 local download of data file
 upload of data into calculation platform
2. Remote data access – calculation would require:
 local download of data file
 upload of data into calculation platform
Page 28 of 41
Part A - Weather station review
7.4.6 Maintenance requirements
HOBO weather stations are robust and designed for remote location with limited
maintenance. Advice from the manufacturer indicates that the weather station should
require only basic maintenance and that sensors are robust and experience only
limited creep. However in addition to regular inspection and cleaning, the following
sensor replacement schedule would be suggested:
Component
Maintenance
Cost estimate
Temperature/RH sensor

Replace every 5 years
$300
Wind speed/direction

Replace every 5 years
$1,200
Battery replacement

Replace every 2 years
$20
All recommended sensors can be completed by the user. Over a 10 year period the
scheduled maintenance is expected to cost $3,100 or $310 annually.
Page 29 of 41
Part A - Weather station review
7.5
Campbell Scientific custom weather station
The Campbell Scientific Custom AWS is based on the CR800 research grade
measurement that very flexible and can be easily customised to suit a range of
applications. The basic configuration presented includes a pole ground mounting kit,
solar panel and weather proof enclosure and costs associated with programming the
HLI calculations into the data logger.
7.5.1 Indicative costing
Description
Cost
(excl
GST)
Base price
$6,269
Inclusions




Optional
extras
$740

$740

$890

Sensors: BGT,
wind speed,
relative humidity
and temperature
Viewpro
software
In logger HLI
calculation
Short-haul
modem
connection
Cellular network
connection
Loggernet
support software
for graphical
user interface
10ft tripod
Figure 2 Campbell Scientific Generic
AWS Schematic
7.5.2 Sensor accuracy
Sensor
Accuracy
AS
Wind speed
±0.5m/s
±2 m/s or 1%,
Relative humidity
±3% (10 - 90% RH),
±5% (90 - 100% RH),
±2% (10-90%),
±4% (90-100%)
Air temperature
±0.6oC
±0.3oC
Black globe temperature
±0.2oC
-
Page 30 of 41
Part A - Weather station review
7.5.3 Installation requirements
This is a solar powered station with straightforward user installation requirement. It
comes with a six foot pole and mounting kit.
7.5.4 Data access



Option for web enabling - $740
Data can be accessed by hard connection via a serial port of serial port/USB
adaptor
Short haul modem connection is included in the base price
7.5.5 HLI calculation method
The HLI calculation can be programmed into the data logger, the cost of this ($500)
is included in the base price. Data from the logger is in dot.dat format and can be
viewed in t a number of ways. The HLI could most simply be viewed on ‘Viewpro’,
free software provided by Campbell Scientific or using Loggernet Support software
that allows for more sophisticated displays of logger data. Loggernet Support
software is required for the remote telemetry option.
7.5.6 Maintenance requirements
All sensors can be serviced or repaired with replacement components that do not
require field calibration, specialised tools or training.
A maintenance schedule has not been provided. In addition to regular cleaning,
maintenance costs based on replacing the entire station once each five years would
be $6,269 or $627 annually.
Page 31 of 41
Part A - Weather station review
7.6
Feedlot Weather Station (MEA)
The MEA Feedlot Weather Station is a sturdy tripod mast, solar power station which
calculates and records accumulated heat load index. It has been designed for use in
feedlots, and all instruments meet the Australian Standards.
7.6.1 Indicative costing
Description
Base price
Cost
(excl
GST)
$7,350
Inclusions





Optional
extras
Sensors: BGT,
relative
humidity/temperatur
e, wind speed
Next G
communication
module included as
standard
Solar panel
In logger HLI/AHLU
calculation
Mounting tripod
included
Figure 3 MEA Feedlot Weather
Station
An adaptable unit, with a
range of additional
sensors and options
available
7.6.2 Sensor accuracy
Sensor
Accuracy
AS
Wind speed
±0.3m/s
±2 m/s or 1%,
Relative humidity
±0.8%
±2% (10-90%),
±4% (90-100%)
Temperature
±0.1oC
±0.3oC
Black globe temperature
±0.2oC
-
Page 32 of 41
Part A - Weather station review
7.6.3 Installation requirements
This station comes with a solar panel and tripod mast. It can be installed by the user
as it arrives largely assembled. Cables for the ground based sensors should be
routed through conduit when installed.
7.6.4 Data access
A serial cable attached to a PC can be used to communicate directly with the data
logger. Data can be unloaded from the logger, sensor inputs can be viewed in ‘real
time’ and the data recorder can be re-programmed if required. Local remote data
access options are available
The station has a built in modem as standard which connects to the Telstra network.
Data is transferred to the internet and viewed using Magpie software. If an ftp site
can be set up, this would cost approximately $10 per month (alternatively, MEA can
manage the data and ftp site for $295 plus GST per year).
7.6.5 HLI calculation method
The HLI/AHLU calculation can be completed within the logger. The ability to
incorporate the calculation into the logger eliminates the data handling steps required
to complete the calculation in an external software application. Additionally Magpie
software provided free of charge with most systems is able to perform complex
calculations derived from the input of one or multiple sensors and make these
available as ‘virtual’ instruments.
7.6.6 Maintenance requirements
Maintenance is minimal if care is taken with basic checks. The solar panel and
pyranometer need to be cleaned periodically with a damp soft cloth. This will protect
the battery life and ensure the solar radiation readings are unaffected by dust. The
sensor shelter should be cleaned to ensure wind flow is not impeded (e.g. spiders).
Regular sensor recalibration is recommended for the air temperature and relative
humidity sensor and BGT sensor. The reality is that few customers recalibrate
sensors at the recommended frequency; both sensors hold their calibration quite well
and a five year (or more) period between calibrations is common. The wind sensor
needs bearing replacements from time to time. In addition to regular inspection and
cleaning, the following sensor replacement schedule would be recommended:
Component
Maintenance
Cost estimate
Sensor calibration (RH and
1
BGT)

Recalibrate every 2 years
$290
Wind speed/direction

Replace bearing at Yr4
and Yr8
$210
Table Note:
1
Solar radiation and temperature/relative humidity need to be sent back to MEA, so a freight
allowance of $50 has been included
Page 33 of 41
Part A - Weather station review
If a sensor fails a replacement can be fitted by the station owner – it does not require
an MEA site visit. Over a 10 year period the scheduled maintenance is expected to
cost $1,870 or $187 annually.
MEA also assign a unique reference number to every weather station sold. A record
is kept for each AWS including its original condition, sensors and serial numbers and
any customer assistance that has been provided. MEA have found this approach to
be time saving and cost effective.
Page 34 of 41
Part A - Weather station review
7.7
Weather Maestro Weather Station (Environdata)
Australian owned company operating in Warwick, Queensland. Weather stations are
locally made and designed. All Weather Maestro sensors meet the Australian
Standards.
7.7.1 Indicative costing
Description
Base price
Cost
(excl
GST)
$7,695
Inclusions





Optional
extras
$1,045


Sensors:
temperature, BGT,
relative humidity
and wind speed
Solar panel
Environdata's
EasyAccess
software
In logger HLI
calculation
Mounting post
included
Figure 4 Environdata Weather
Maestro AWS
Next G modem
package
An adaptable unit,
with a range of
additional sensors
and options
available
7.7.2 Sensor Accuracy
Sensor
Accuracy
AS
Wind speed
±0.2 m/s
±2 m/s or 1%,
Relative humidity
±2% (10 - 90% RH),
±4% maximum
±2% (10-90%),
±4% (90-100%)
Black globe temperature
±0.2oC
-
7.7.3 Installation
Easy to assemble and use, comes with a solar panel and battery allow for up to 3
week's operation without sunlight so no power supply is required.
Page 35 of 41
Part A - Weather station review
7.7.4 Data access







A communications or telemetry method that transmits the stored data to a
chosen computer, PLC or control system.
Environdata supplies UHF radio links for short range (up to 5km) to medium
range (up to 15km), and VHF radio links for longer distances.
Next G modems can also be used on the Telstra network.
Direct cable connection is also an option.
Ethernet converters & Internet page display means Environdata can get the
weather data from a Weather Maestro Weather Station to any web browser.
In real terms, the Weather Maestro Weather Station has capacity for more
than 1 year of data including ten minute, hourly and daily summaries, all in
secure non-volatile flash memory.
The collected weather data is sent to the collecting device (usually a PC, PLC
or RTU) as ASCII text, with a native output in RS232 Serial format. This data
is easily readable by humans and also easily interpreted by any third party
application for custom integration. Environdata also provides a MODBUS
interface if required, further enhancing the ease of connecting to the control
system.
7.7.5 HLI calculation method
The HLI calculation can be done through Environdata firmware and has been
included in the base price. All data collected by the Weather Maestro data logger is
time and date stamped. The ability to incorporate the calculation into the logger
eliminates the data handling steps required to complete the calculation in external
software application. The calculated HLI could be simply viewed in Environdata’s
EasyAccess software provided with the AWS.
7.7.6 Maintenance requirements
The Weather Maestro weather stations are designed and built in Australia to survive
in harsh conditions. Environdata weather stations are located throughout Australia:
the Simpson Desert, several kilometres off the Tasmanian coast, Uluru, tropical Cape
Tribulation and remote Gove in the Northern Territory are just a few of the more
extreme examples
These robust, modular weather stations are specifically designed to be easy to
install, easy to use, and easy to maintain. However in addition to regular inspection
and cleaning, the sensor replacement schedule below would be suggested. All
recommended sensor replacements can be completed by the user. Over a 10 year
period the scheduled maintenance is expected to cost $2,265 or $226 annually.
Page 36 of 41
Part A - Weather station review
Component
Maintenance
BGT Sensor

Recalibrate every 2 years
Relative humidity sensor

Replace every 2 years
Wind speed sensor

Replace bearings every 5
years
Solar battery

Replace every 5 years
Cost estimate
$80
$195
$360
1
$85
1
Table Note: A freight allowance of $50 has been included
Environdata recommend an annual in-field service to maintain system reliability and
accuracy.
Page 37 of 41
Part A - Weather station review
7.8
Weathermaster 2000 Weather Station (Environdata)
Australian owned company operating in Warwick, Queensland. Weather stations are
locally made and designed. The Weathermaster 2000 AWS is an integrated sensor
unit with the option of adding one additional sensor, in this case the BGT.
7.8.1 Indicative costing
Description
Base price
Cost
(excl
GST)
$8,816
Inclusions





Optional
extras
$1,890

Sensors:
temperature, BGT,
relative humidity,
wind speed and
direction
Solar panel
Environdata's
EasyAccess
software
Software based
HLI calculation
Mounting post
included
Figure 5 Environdata Weathermaster
2000 AWS
Next G modem
package

7.8.2 Sensor accuracy
Sensor
Accuracy
AS
Wind speed
±0.2 m/s
±2 m/s or 1%,
Relative humidity
±3% (10 - 90% RH),
±4% maximum
±2% (10-90%),
±4% (90-100%)
Temperature
±0.2oC
±0.3oC
Black globe temperature
±0.2oC
-
Solar radiation
±0.5oC
-
Wind direction
±2o
±3o
Page 38 of 41
Part A - Weather station review
7.8.3 Installation
Easy to assemble and use, comes with a solar panel and battery allow for up to 3
week's operation without sunlight so no power supply is required.
7.8.4 Data access







A communications or telemetry method that transmits the stored data to a
chosen computer, PLC or control system.
Environdata supplies UHF radio links for short range (up to 5km) to medium
range (up to 15km), and VHF radio links for longer distances.
Next G modems can also be used on the Telstra network.
Direct cable connection is also an option.
Ethernet converters & Internet page display means Environdata can get the
weather data from a Weather Maestro Weather Station to any web browser.
In real terms, the Weather Maestro Weather Station has capacity for more
than 1 year of data including ten minute, hourly and daily summaries, all in
secure non-volatile flash memory.
The collected weather data is sent to the collecting device (usually a PC, PLC
or RTU) as ASCII text, with a native output in RS232 Serial format. This data
is easily readable by humans and also easily interpreted by any third party
application for custom integration. Environdata also provides a MODBUS
interface if required, further enhancing the ease of connecting to the control
system.
7.8.5 HLI Calculation Method
The HLI calculation can be done through Environdata firmware and has been
included in the base price. All data collected by the Weathermaster data logger is
time and date stamped. The ability to incorporate the calculation into the logger
eliminates the data handling steps required to complete the calculation in an external
software application. The calculated HLI could be simply viewed in Environdata’s
EasyAccess software provided with the AWS.
7.8.6 Maintenance requirements
The Weathermaster 2000 maintenance requirements are identical to the Weather
Maestro weather station.
These robust, modular weather stations are specifically designed to be easy to
install, easy to use, and easy to maintain. However in addition to regular inspection
and cleaning, the sensor replacement schedule below would be suggested. All
recommended sensor replacements can be completed by the user. Over a 10 year
period the scheduled maintenance is expected to cost $2,265 or $226 annually.
Page 39 of 41
Part A - Weather station review
Component
Maintenance
BGT Sensor

Recalibrate every 2 years
Relative humidity sensor

Replace every 2 years
Wind speed sensor

Replace bearings every 5
years
Solar battery

Replace every 5 years
Cost estimate
$80
$195
$360
1
$85
1
Table Note: A freight allowance of $50 has been included
Environdata recommend an annual in-field service to maintain system reliability and
accuracy.
Page 40 of 41
Part A - Weather station review
8. Weather station service/purchase locations
Weather
Station
Pacific Data
Systems
Custom
Weather
Station
Saros Custom
Weather
Station
Suppliers/
Service
locations
Pacific Data
Systems,
Brisbane,
QLD
Saros, Milton,
QLD
Contact details
27 Hi-Tech Court
Eight Mile Plains QLD 4113
Adam Carter
Phone: 07 3361 2000
Email: sales@pacdatasys.com.au
27 Douglas St / PO Box 2079
MILTON QLD 4064
Phone: 07 3367 3400
Website: www.saros.com.au
Davis*
Vantage Pro 2
Plus
Pacific Data
Systems
Contact person
Rob Brook or
Andrew Niven
27 Hi-Tech Court
Eight Mile Plains QLD 4113
Adam Carter
Phone: 07 3361 2000
Email: sales@pacdatasys.com.au
Instrument
Choice
22A Cavan Road
Dry Creek SA 5094
Phone: 1300 737 871
Email: tim@instrumentchoice.com.au
Website: www.instrumentchoice.com.au
Campbell
Scientific
Custom AWS
Campbell
Scientific
411 Bayswater Road
Garbutt, QLD 4814
Phone: 07 4772 0444
Email: ghewitt@campbellsci.com.au
Website: http://www.campbellsci.com.au
HOBO U30
Instrument
Choice
MEA
Gavin Hewitt
22A Cavan Road
Dry Creek SA 5094
Phone: 1300 737 871
Email: tim@instrumentchoice.com.au
Website: www.instrumentchoice.com.au
Feedlot
Weather
Station
Tim Trainor
Tim Trainor
41 Vine Street
MAGILL SA 5072
Joe Hoogland
Phone: 08 8332 9044
Website: www.mea.com.au
Weather
Maestro
Weathermaste
r 2000
Environdata
42-44 Percy Street
Warwick Queensland
Phone: 07 4661 4699
Email: sales@environdata.com.au
Website: www.environdata.com.au
Sandra Wilson
Table note:
* A number of other retailers also sell these weather stations but were not contacted during this review.
For example, www.davisnet.com.au and www.davisinstruments.com.au
Page 41 of 41
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