Rubicon Water

SlipMeter(TM)

SlipMeter™

SlipMeter(TM) SlipMeter(TM) SlipMeter(TM) SlipMeter(TM) SlipMeter(TM)

The SlipMeter is a flow meter with an integrated control gate designed to automate farm service points.

Accurate flow measurement, precise flow control, power supply and radio telecommunications are fully integrated into the SlipMeter.  Sonaray® flow measurement technology means the SlipMeter provides measurement accuracy in real-world open channel flow conditions.

Features and Benefits


The SlipMeter uses Rubicon’s unique ultrasonic array flow measurement technology to accurately measure flows even in turbulent conditions. Instantaneous flow rate and total volume passed are recorded, providing a precise account of water usage.

It features a local LCD display which provides irrigators with the ability to control the service point and view instantaneous flow rate, volume of current delivery, and total flow volume for the season.

The SlipMeter can be managed and monitored on-site or operated remotely when connected to a SCADA network such as Rubicon’s SCADAConnect® system.


The SlipMeter is ideal for
  1. Measuring and controlling flow in farm service points
  2. Channel-to-pipe applications especially when large conduits are used
  3. Applications affected by turbulence
  4. Lowering civil costs because there is no need to stabilise flow at entry and exit
  5. Service points requiring very low head loss and/or high accuracy

Highlights
  1. Ultrasonic array flow measurement technology which provides proven measurement accuracy in real-world open channel flow conditions
  2. Ultrasonic water level measurement
  3. Local display software in multiple languages
  4. Solar-charged or AC charged battery system
  5. SCADA ready communication system – can be integrated to many SCADA platforms
  6. Robust high duty cycle operation and long life
  7. Flow measurement accuracy is not affected by obstructions, turbulence, or contaminants
  8. Independently verified flow measurement accuracy of ±2.5%*
  9. Standard sizes include 600, 750, 900 and 1200mm
  10. Very low power consumption compared to magnetic flow measurement

Control capabilities

The SlipMeter automatically controls the flow of water by varying the gate position based on a desired set-point or on irrigation demand as shown in the table.
 

Control objective Gate action
Local Position Moves to a desired set-point and stays there
Flow Maintains a constant flow regardless of channel level
Local control pedestal

Each SlipMeter installation includes a robust pedestal that provides power and control to the gate and is a secure, weather proof housing for electronic components and batteries.

The pedestal also serves as a local user interface. A keypad and LCD display are located under the lockable pedestal lid, allowing farmers to monitor, or operators to control and troubleshoot on-site.


Low maintenance

The SlipMeter’s modular design allows it to be maintained in the field with minimal tools, training, and easily replaceable parts.
 

  1. Level sensors are easily removed during in-field servicing
  2. Seals can be replaced
  3. On-site diagnostics built into the software
  4. Service can be done by local Rubicon field technicians or authorised/trained independent local integrators

Easy to install

Rubicon’s SlipMeters are designed to mount to existing headwall structures as well as purpose built emplacements significantly reducing costs associated with civil work.
 

  1. Installed and operational in two days during irrigation or off-season
  2. Factory calibrated and pre-configured
     
Existing manual gate
Replaced with SlipMeter

Independently tested flow measurement accuracy

The SlipMeter’s flow measurement accuracy has been independently verified under a wide range of conditions in the laboratory and in the field:
 

  1. Provost & Pritchard engineers in California conducted in-situ testing in a customer service point configuration under calm, turbulent, and extreme turbulent conditions. Download a copy of the report here.
  2. Manly Hydraulics Laboratory in Sydney, Australia conducted laboratory tests under wave disturbance, upstream disturbance and submerged conditions. Download a copy of the report here.

 

*Accuracy of 600mm 45º SlipMeter verified by Manly Hydraulics Laboratory,

April 2011 and Provost & Pritchard, November 2011

 

 

 

Features and Benefits


The SlipMeter uses Rubicon’s unique ultrasonic array flow measurement technology to accurately measure flows even in turbulent conditions. Instantaneous flow rate and total volume passed are recorded, providing a precise account of water usage.

It features a local LCD display which provides irrigators with the ability to control the service point and view instantaneous flow rate, volume of current delivery, and total flow volume for the season.

The SlipMeter can be managed and monitored on-site or operated remotely when connected to a SCADA network such as Rubicon’s SCADAConnect® system.


The SlipMeter is ideal for
  1. Measuring and controlling flow in farm service points
  2. Channel-to-pipe applications especially when large conduits are used
  3. Applications affected by turbulence
  4. Lowering civil costs because there is no need to stabilise flow at entry and exit
  5. Service points requiring very low head loss and/or high accuracy

Highlights
  1. Ultrasonic array flow measurement technology which provides proven measurement accuracy in real-world open channel flow conditions
  2. Ultrasonic water level measurement
  3. Local display software in multiple languages
  4. Solar-charged or AC charged battery system
  5. SCADA ready communication system – can be integrated to many SCADA platforms
  6. Robust high duty cycle operation and long life
  7. Flow measurement accuracy is not affected by obstructions, turbulence, or contaminants
  8. Independently verified flow measurement accuracy of ±2.5%*
  9. Standard sizes include 600, 750, 900 and 1200mm
  10. Very low power consumption compared to magnetic flow measurement

Control capabilities

The SlipMeter automatically controls the flow of water by varying the gate position based on a desired set-point or on irrigation demand as shown in the table.
 

Control objective Gate action
Local Position Moves to a desired set-point and stays there
Flow Maintains a constant flow regardless of channel level
Local control pedestal

Each SlipMeter installation includes a robust pedestal that provides power and control to the gate and is a secure, weather proof housing for electronic components and batteries.

The pedestal also serves as a local user interface. A keypad and LCD display are located under the lockable pedestal lid, allowing farmers to monitor, or operators to control and troubleshoot on-site.


Low maintenance

The SlipMeter’s modular design allows it to be maintained in the field with minimal tools, training, and easily replaceable parts.
 

  1. Level sensors are easily removed during in-field servicing
  2. Seals can be replaced
  3. On-site diagnostics built into the software
  4. Service can be done by local Rubicon field technicians or authorised/trained independent local integrators

Easy to install

Rubicon’s SlipMeters are designed to mount to existing headwall structures as well as purpose built emplacements significantly reducing costs associated with civil work.
 

  1. Installed and operational in two days during irrigation or off-season
  2. Factory calibrated and pre-configured
     
Existing manual gate
Replaced with SlipMeter

Independently tested flow measurement accuracy

The SlipMeter’s flow measurement accuracy has been independently verified under a wide range of conditions in the laboratory and in the field:
 

  1. Provost & Pritchard engineers in California conducted in-situ testing in a customer service point configuration under calm, turbulent, and extreme turbulent conditions. Download a copy of the report here.
  2. Manly Hydraulics Laboratory in Sydney, Australia conducted laboratory tests under wave disturbance, upstream disturbance and submerged conditions. Download a copy of the report here.

 

*Accuracy of 600mm 45º SlipMeter verified by Manly Hydraulics Laboratory,

April 2011 and Provost & Pritchard, November 2011

 

 

 

Technologies


The SlipMeter uses technologies developed by Rubicon which are common across TCC® products:


Sonaray® flow measurement

The SlipMeter employs Sonaray ultrasonic array technology. The ultrasonic array principle maps the velocity profile by using multiple transecting paths to provide an accurate representation of the velocity distribution within the meter box.

This technique measures across the entire velocity field within the meter box and is resistant to swirl, or other non-uniform velocity distributions caused by garbage or other debris.

  Eight horizontal planes sample the velocity distribution passing through the meter (side view)
 

Each measurement plane implements crossed-path transit time acoustics to sample the entire velocity field in that plane (plan view of measurement plane)
  The horizontal velocity distributions are then integrated vertically to construct the three dimensional flow velocity distribution (side view)

 

High-strength FormiPanel™ construction

The SlipMeter features FormiPanel™, Rubicon’s high-strength construction method that uses techniques adopted from the aerospace and marine industries.

The gate panel and meter assembly is made from a laminate construction that utilises high strength industrial adhesives to bond structural grade aluminium extrusions and skin plates to a synthetic core material. The result is strong, lightweight, and corrosion resistant.

 

 

 

CableDrive™ and SolarDrive® gate control technology

CableDrive is Rubicon’s actuation system designed to provide precision gate position accuracy and repeatability in harsh environments. The drive is a wire rope (cable) and drum mechanism that provides positive drive in both the raise and lower directions. It is designed for high duty cycle operation and provides precise gate positioning to within ±0.5mm.

The drive is managed by Rubicon’s SolarDrive technology – a purpose built integrated circuit board that manages gate positioning, solar power regulation, battery charge, fusing and the pedestal user interface.

 

Technologies


The SlipMeter uses technologies developed by Rubicon which are common across TCC® products:


Sonaray® flow measurement

The SlipMeter employs Sonaray ultrasonic array technology. The ultrasonic array principle maps the velocity profile by using multiple transecting paths to provide an accurate representation of the velocity distribution within the meter box.

This technique measures across the entire velocity field within the meter box and is resistant to swirl, or other non-uniform velocity distributions caused by garbage or other debris.

  Eight horizontal planes sample the velocity distribution passing through the meter (side view)
 

Each measurement plane implements crossed-path transit time acoustics to sample the entire velocity field in that plane (plan view of measurement plane)
  The horizontal velocity distributions are then integrated vertically to construct the three dimensional flow velocity distribution (side view)

 

High-strength FormiPanel™ construction

The SlipMeter features FormiPanel™, Rubicon’s high-strength construction method that uses techniques adopted from the aerospace and marine industries.

The gate panel and meter assembly is made from a laminate construction that utilises high strength industrial adhesives to bond structural grade aluminium extrusions and skin plates to a synthetic core material. The result is strong, lightweight, and corrosion resistant.

 

 

 

CableDrive™ and SolarDrive® gate control technology

CableDrive is Rubicon’s actuation system designed to provide precision gate position accuracy and repeatability in harsh environments. The drive is a wire rope (cable) and drum mechanism that provides positive drive in both the raise and lower directions. It is designed for high duty cycle operation and provides precise gate positioning to within ±0.5mm.

The drive is managed by Rubicon’s SolarDrive technology – a purpose built integrated circuit board that manages gate positioning, solar power regulation, battery charge, fusing and the pedestal user interface.

 

Specifications

General
Minimum flow where accuracy is guaranteed 600mm wide gate: 1ML/d; 750mm wide gate: 1.56ML/d; 900mm wide gate: 2.25ML/d; 1200mm wide gate: 4ML/d
Data interface Local display (4 line LCD with keypad), Modbus serial, data radio
Units of measure User definable (metric/imperial (US))
Data tags 140+ available for integration into SCADA systems
Data storage All volumetric usage is accumulated and backed up internally in nonvolatile memory. Historical data can be uploaded through the Modbus interface, a local data logger or from the SCADA host database
Not full alarm Alarm indicates when meter box is not full
Control Local or remote via SCADA
Electronics  SolarDrive® power management and control technology housed in the local control pedestal. Each unit passes a 12hr heat pre-stress and 100% functional test
Typical weight  600mm wide gate ≈ 195kg; 750mm wide gate ≈ 215kg; 900mm wide gate ≈ 290kg; 1200mm wide gate ≈ 340kg
Motor  12V DC
Gate position  256 count magnetic encoder
Seal performance  <0.02 litres/second per lineal metre of seal (better than the
American and European standards AWWA C513 & DIN 19569)
Actuation options  12V DC powered (solar); 110-240V AC powered; manual with hand-crank or car battery
Flow measurement
Technique Cross-path ultrasonic transit-time
Transit-time measurement resolution 100 picoseconds
Measurement frequency 1 second (configurable)
Accuracy 

±2.5%

*Accuracy of 600mm 45° SlipMeter verified by Manly Hydraulics Laboratory, April 2011 and Provost & Pritchard, November 2011 

Velocity measurement range Accuracy listed above is achieved at flow velocities greater than 25mm per second
Sensor quantity  32 individual ultrasonic sensors, arranged in four cartridges, across 8 planes of measurement
Calibration method Factory pre-calibrated. Optional ultrasonic level sensor is also internally self-calibrating. Simple in-field verification process.
Material
Frames  Extruded marine grade aluminium 
Gate panels  Composite laminate construction using marine grade  aluminium sheet bonded to RTM Styrofoam on aluminium extrusion
Hardware  Stainless-steel
Shafts  Stainless-steel
Seals EDPM rubber (Durometer 70 (Shore A))
Wear strip PVC
Pressure rating Refer to the Dimensions and Maximum Water Level table in data sheet
Water level sensor Anodized aluminium and copolymer acetyl plastic with stainless-steel fittings and gold-plated connectors
Power
Power supply  12V DC self-contained battery charged from solar panel or AC mains power
Solar panel  85W monocrystalline
Batteries  (2) or (3) 12V 28 Ampere-hour sealed gel lead acid with temperature sensor (~5yr life, provides ~5 days of operation without solar or AC line power)
Communications
Protocols  Modbus, DNP3, MDLC 

Specifications subject to change

Specifications

General
Minimum flow where accuracy is guaranteed 600mm wide gate: 1ML/d; 750mm wide gate: 1.56ML/d; 900mm wide gate: 2.25ML/d; 1200mm wide gate: 4ML/d
Data interface Local display (4 line LCD with keypad), Modbus serial, data radio
Units of measure User definable (metric/imperial (US))
Data tags 140+ available for integration into SCADA systems
Data storage All volumetric usage is accumulated and backed up internally in nonvolatile memory. Historical data can be uploaded through the Modbus interface, a local data logger or from the SCADA host database
Not full alarm Alarm indicates when meter box is not full
Control Local or remote via SCADA
Electronics  SolarDrive® power management and control technology housed in the local control pedestal. Each unit passes a 12hr heat pre-stress and 100% functional test
Typical weight  600mm wide gate ≈ 195kg; 750mm wide gate ≈ 215kg; 900mm wide gate ≈ 290kg; 1200mm wide gate ≈ 340kg
Motor  12V DC
Gate position  256 count magnetic encoder
Seal performance  <0.02 litres/second per lineal metre of seal (better than the
American and European standards AWWA C513 & DIN 19569)
Actuation options  12V DC powered (solar); 110-240V AC powered; manual with hand-crank or car battery
Flow measurement
Technique Cross-path ultrasonic transit-time
Transit-time measurement resolution 100 picoseconds
Measurement frequency 1 second (configurable)
Accuracy 

±2.5%

*Accuracy of 600mm 45° SlipMeter verified by Manly Hydraulics Laboratory, April 2011 and Provost & Pritchard, November 2011 

Velocity measurement range Accuracy listed above is achieved at flow velocities greater than 25mm per second
Sensor quantity  32 individual ultrasonic sensors, arranged in four cartridges, across 8 planes of measurement
Calibration method Factory pre-calibrated. Optional ultrasonic level sensor is also internally self-calibrating. Simple in-field verification process.
Material
Frames  Extruded marine grade aluminium 
Gate panels  Composite laminate construction using marine grade  aluminium sheet bonded to RTM Styrofoam on aluminium extrusion
Hardware  Stainless-steel
Shafts  Stainless-steel
Seals EDPM rubber (Durometer 70 (Shore A))
Wear strip PVC
Pressure rating Refer to the Dimensions and Maximum Water Level table in data sheet
Water level sensor Anodized aluminium and copolymer acetyl plastic with stainless-steel fittings and gold-plated connectors
Power
Power supply  12V DC self-contained battery charged from solar panel or AC mains power
Solar panel  85W monocrystalline
Batteries  (2) or (3) 12V 28 Ampere-hour sealed gel lead acid with temperature sensor (~5yr life, provides ~5 days of operation without solar or AC line power)
Communications
Protocols  Modbus, DNP3, MDLC 

Specifications subject to change