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Hydrological Services Pty Ltd Sydney, Australia. Hornet Cableway Gauging Systems Set Up and Use Department of Primary Industries and Water Hobart, Tasmania 31 st August 2009. Hornet V Hornet Plus Comparison. Hornet (Basic) System. Suitable for ADCP only Used for positioning only

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Hydrological services pty ltd sydney australia

Hydrological Services Pty Ltd

Sydney, Australia

Hornet Cableway Gauging Systems Set Up and Use

Department of Primary Industries and Water

Hobart, Tasmania

31st August 2009

Hornet basic system
Hornet (Basic) System

  • Suitable for ADCP only

  • Used for positioning only

  • No airline / wetline correction feature

  • Variable traversing speed (maximum 1m/sec)

  • Wireless hand-control

Hornet plus system
Hornet Plus System

  • Suitable for ADCP OR conventional current meter

  • Auto-correction of distance and depth (air / wetline)

  • Variable traversing speed (maximum 1m/sec or 3.28ft /sec)

  • Wireless hand- control

  • Depth Measurement Resolution

    (0.01m OR 0.01ft)

  • Built-in Signal Processor for Mechanical Current Meters

Set up install hoist batteries
Set-Up – Install Hoist Batteries

It may be necessary to connect power to drive control and retrieve traveller block from middle of stream

Install the 1st battery opposite to the winch side

Secure by locking in pin

Install the hand winch in the battery box with the slot provided

Install the 2nd battery above the hand winch and lock in place with pin

Set up hoist extension
Set-Up –Hoist Extension

Used where operating side platform is ‘high’ above ground level

Minimises OH&S risk from need to lift batteries and hoist to platform during assembly tasks

Needs to be factored into hand control setting prior to gauging (Hornet Plus systems only)

Battery Mounting Boxes

Extension located between traveller block and hoist

Hand Winch Mounting Box Attaches to traveller block

Set up drive control interlock
Set-Up – Drive Control Interlock

Interlock serves 2 main purposes

  • In built ultrasonic proximity sensor prevents traveller block striking drive control cabinet (when activated)

  • In built ‘tilt’ sensor senses horizontal sag angle for auto correction of horizontal distance

Ensure underside of main cable makes contact with BOTH bottom Interlock studs

Set up attach adcp to hoist
Set-Up – Attach ADCP to Hoist

Open bottom cover on hoist and press button on control box to switch on power to hoist (BLUE L.E.D. is illuminated)

Press Lower and pull down on connector

Remove ‘R’ clip and pin from connector

Press Lower to release connector

Operation initial power up
Operation – Initial Power Up

Apply power to Drive Control System by connecting portable generator

Switch on Hoist (button on control box)

Switch on Hand Control (blue button in top right hand corner)

Red L.E.D. on the hand control will turn off once communications have been established

Green L.E.D. will flash as the remote control communicates between the Hoist and Drive Control System

Operation hand control features
Operation - Hand Control Features


(view Distance, Angles of Sag/Drift, Speed, Voltage & Status)

Variable Speed Control

Power & Zero Button

(turns power On/Off & ‘Zeroes’ distance/depth when prompted)

Navigate Menus

(rotate to scroll through menus and press to select options)


- RED indicates an error

- GREEN flashes while communicating

Traveller Switch


Hoist Control Switch

(raise/lower weight)

Operation brief description of controls
Operation – Brief Description of Controls

Power + Zero –turns unit On/Off

when ‘zero’ is required the user will be prompted with a ‘z’ on the LCD

Traversing Speed –controls speed of traverse (maximum 1 metre per second)

constant speed required for ADCP gauging

Forward and Reverse Traversing – forward (from operating to far side

reverse (from far side to operating side

Raise and Lower – raises and lowers current meter (constant rate)

Red, Green and Blue L.E.D.’s – red indicates a communication problem

green indicates all OK

blue indicates pulses from current meter (Hornet Plus only)

Menu navigation – selection made by ‘rotate and press’

Sounder – Hand Control has in built sounder which beeps for each current meter count (Hornet Plus only)

Operation brief description of controls continued
Operation – Brief Description of Controls (continued)

LCD + backlight –backlight can be always OFF, ON or for several seconds

horizontal distance data displayed (Basic Hornet)

Current meter Input and Output – Hornet Plus only

Operating Frequency – system uses 915MHz licence free radio band

Operation brief description of controls continued1
Operation – Brief Description of Controls (continued)

NiMh Battery charging – charged by either mains charger or 12VDC ‘cigarette lighter’ charger provided

alkaline batteries can be used (ensure that charger is NOT connected

Operation horizontal distance correction
Operation - Horizontal Distance Correction

  • Inclinometer attached to main cable measures ‘angle of sag’

  • Trigonometry used to constantly correct ‘raw’ horizontal distance to ‘true’ horizontal distance

    ‘W = L Cos θ’

  • Both ‘raw’ and ‘corrected’ distance displayed on hand control




← 10.30m 0.53m/s

↨ 3.72m R[ ] H[ ]

Operation airline wetline correction
Operation - Airline / Wetline Correction

  • Inclinometer inside hoist constantly measures ‘angle of drift’

  • Trigonometry used to correct ‘raw’ airline and wetline depth to ‘corrected’ depth

  • Both ‘raw’ airline / wetline depth, ‘corrected’ depth and ‘corrected depth to current meter’ displayed on hand control as shown

  • Corrected depth calculated in accordance with USGS ‘Measurement and Computation of Stream Flow Vol.1, Water Supply Paper 2175’

Main Cable



A 3.75 W 2.53m

CTD 2.51m 5.5°

Corrected Depth


Water Flow

Operation current meter signal transmission hornet plus only
Operation - Current Meter Signal Transmission (Hornet Plus only)

  • In-built current meter signal processor (i.e. filters signal)

  • Continuous signal counting (regardless of communication status)

  • Any type of current meter counter can be used

To current meter counter

Radio Communications

Operation drive control system
Operation - Drive Control System

Control Box

(front view)

Drive Control


Control Box

(side view)

Portable Generator

(240V or 110V)

AC Electric Motor, Encoder & Controller