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 FeatureHornet Hornet Plus Type of current meterADCP onlyADCP OR mechanical Traversing SystemPowered by AC (generator) Hoist SystemPowered by 2 x 12V (38ah) deep cycle batteries Hand Control3 x AA rechargeable batteries (or alkaline in an emergency) Signal processingNo applicableCats whisker and magnetic head types Signal processing software for ‘clean’ signal Hoist cable3mm stainless steel30 metres of amergraph with C1 connector Horizontal distance correctionYes Adjustable traversing speedUp to 1 metre per second Airline / Wetline correctionNoYes Maximum span600 metres Maximum communications range1000 metres

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  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 Install the 1 st 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 2 nd battery above the hand winch and lock in place with pin It may be necessary to connect power to drive control and retrieve traveller block from middle of stream

Set-Up – Install Hoist

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) Hand Winch Mounting Box Attaches to traveller block Battery Mounting Boxes Extension located between traveller block and hoist

Set-Up – Install Hoist

Set-Up – Drive Control Interlock Interlock serves 2 main purposes 1.In built ultrasonic proximity sensor prevents traveller block striking drive control cabinet (when activated) 2.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 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 to release connector Remove ‘R’ clip and pin from connector Press Lower and pull down on connector

Set-Up – Attach ADCP

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 LCD (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) LED’s - RED indicates an error - GREEN flashes while communicating Hoist Control Switch (raise/lower weight) Traveller Switch (forward/reverse)

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) Current meter Input and Output – Hornet Plus only Operating Frequency – system uses 915MHz licence free radio band LCD + backlight – backlight can be always OFF, ON or for several seconds horizontal distance data displayed (Basic Hornet)

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 – Menu Operation

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 ‘W = L Cos θ’  Both ‘raw’ and ‘corrected’ distance displayed on hand control ← 10.30m 0.53m/s ↨ 3.72m R[ ] H[ ] L W θ

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’ A 3.75 W 2.53m CTD 2.51m 5.5° Water Flow Main Cable Airline Wetline θ Corrected Depth

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 Radio Communications To current meter counter

Operation - Drive Control System AC Electric Motor, Encoder & Controller Drive Control ‘Inter-lock’ Control Box (side view) Control Box (front view) Portable Generator (240V or 110V)

Questions??

The ‘Bad Old Days’ are OVER