Installers, vendors and manufacturers

Duly qualified persons

Duly qualified persons (DQPs) play an important role in floodplain harvesting measurement. They are responsible for surveying and installing benchmarks, installing and validating storage meters, telemetry connection to the data acquisition service, applying tamper-evident seals and validating the installation of existing storage meters. DQPs include the following occupations:

  • certified storage meter installer and validator
  • certified meter installer
  • qualified surveyor
  • telemetry technician

Floodplain harvesting webinar

Webinar for suppliers and installers

When: 22 October 2020



Storages used for floodplain harvesting will need to have a survey benchmark installed. A qualified surveyor will survey, install and verify benchmarks prior to installation of storage meters.

Certified storage meter installers and validators

They are responsible for installing and validating storage meters and local intelligence devices at floodplain harvesting storages.
If you want to become a certified storage meter installer and validator an accredited course is being offered by Irrigation Australia Limited.

Storage meters

A storage meter measures the water level within the storage and is used to determine the storage volume. It must meet the minimum specifications for storage meters.

Minimum specifications for storage meters

Table 2. Storage meter minimum specifications
Criterion Minimum specification
Output Digital (SDI-12/Modbus) directly output from sensor
Range Appropriate to the storage depth (typically 0 to 5 metres, up to 10 metres)
Accuracy ±10 millimetres
Calibration capability Has the capacity to record and adjust calibration constants and can be tested against a reference meter
Supply voltage and power consumption Can operate on nominal 12-volt direct-current supply and less than 20-milliamp average current draw
Data-acquisition service/data logger and telemetry unit compatibility Data-acquisition-service compatibility for relevant floodplain harvesting measurement parameters; sensor can respond to requests for serial number and other diagnostic information
Temperature range –5°C to +50°C operating temperature
Warranty Minimum 12 months
Performance testing Sensor has been trialled or is used in harsh environments by a reputable independent agency in Australia
Support Satisfactory vendor documentation and local support available

Local-intelligence devices

Local Intelligence Device is a combined data logger and telemetry unit. They store and transmit the water level data and related information to the data acquisition service. To achieve this they need to be compatible with the storage meter that is being used.

Compliant solutions

To give water users greater confidence about devices or solutions that have been confirmed as being compliant with the floodplain harvesting measurement rules, the department will maintain a list of devices that have been tested and found to meet the relevant specifications. It is the water user’s responsibility to ensure they purchase a fit-for-purpose device that meets their individual needs.

List of storage meters for floodplain harvesting measurement 

The following list has been designed to assist water users and meter installers to understand which storage meters have been confirmed as meeting the minimum specifications for storage meters, as set out in the NSW Floodplain Harvesting Measurement Policy.

However, it is the water user’s responsibility to ensure they purchase a fit-for-purpose device that meets their individual needs. Please note that this list does not provide any form of warranty or assurance about the quality, reliability or suitability of listed storage meters, including for specific environmental conditions, local intelligence device (LID) configurations or signal interfaces.

A list of LIDs that meet the minimum specifications is on the department’s website. Not all storage meters will interface with all LIDs. The storage meters on this list will interface with LIDs that have Modbus or SDI-12 communication outputs, but not Pulse outputs.

It is the water user’s responsibility to make sure that the chosen storage meter interfaces with the chosen LID. A meter installer will be able to provide advice about this integration, and other installation matters.

The product trade names in this publication are supplied on the understanding that no preference between equivalent products is intended and that the inclusion of a product name does not imply endorsement by the department over any equivalent product from another manufacturer.

MakeModelDistributorTypeManufacturer's contact detailsDate of listing
In SituLevel TROLLThermoFisherSubmersiblewebsite: https://in‐situ.com5 August 2020
Keller-Druck36XiWBestech AustraliaSubmersiblewebsite: http://www.keller‐d5 August 2020
OTTRLSAqualabRadarwebsite: August 2020
OTTPLSAqualabSubmersiblewebsite: August 2020
SeamtricsPT12HydroTerraSubmersiblewebsite: https://www.seametrics.com5 August 2020
STSPTM/N/SDI-12Automated ControlSubmersiblewebsite: August 2020
VegaVEGAPULS C 21VegaRadarwebsite: https://www.vega.com5 August 2020


The department welcomes device manufacturers to develop storage meters and local intelligence devices that are compatible with the technical requirements of the healthy floodplain measurement policy. Device manufacturers are invited to submit their compatible devices for testing. More information will be provided shortly.

Storage meter assessment against the minimum specification will be undertaken by Manly Hydraulic Laboratory at the vendor’s expense. An outline of the assessment process is provided below.

Outline of the assessment process

1Develop a storage sensor that meets the Minister’s minimum storage meter specifications
2 Submit the storage meter technical specifications to Manly Hydraulics  Laboratory (MHL) for assessment
3 Stage 1 Assessment: MHL will assess if the sensor's technical specifications comply with the minimum specifications
4Stage 2 Assessment: Compatibility testing of the storage meter with the department listed local intelligence devices
5 MHL will notify the supplier of the assessment and testing results
6 Sensors that meet the Stage 1 and Stage 2 assessments criteria will be listed on the department's website