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Temperature Monitoring Unit

Allowing geothermal technicians to simultaneously measure and record temperature, water level and depth from the safety of a vehicle cabin

What is the TMU?

The Temperature Monitoring Unit (TMU) is a temperature probe deployment which allows operators to measure the temperature within drill holes, whilst remaining within the confines of the vehicle cabin. The TMU allows the probe to be winched down a drill hole, recording temperatures as it goes, and once the bottom of the hole is reached, return to the surface.

The components which make up the TMU are:
     1. A mobile arm for locational deployment of the probe.
     2. A winch and fairlead, allowing feeding and retracting of the probe cable.
     3. The temperature probe.
     4. An optional temperature monitoring camera.


Operational Functions

  1. The ability to select the position of probe deployment by extending and rotating the mobile arm
  2. The ability to raise/lower the temperature probe using the winch
  3. The ability to measure and record the temperature inside a drill hole throughout the probe’s descent
  4. Provision of thermal imaging output to facilitate visualisation of temperatures
  5. The ability to safely and securely stow the temperature probe when not in use


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Crane Hydraulic Specifications

  • Recommended oil flow = 5 L/min
  • Maximum Working Pressure = 17.5 MPa
  • Power required at recommend oil flow = 1.5 kW
  • Tank Capacity = 18L
  • Hydraulic Oil = DIN 51524
  • Recommended Oil working temperature = 70°C or below

Winch Hydraulic Motor Specifications

  • Maximum Oil Flow (intermittent) = 25 L/min
  • Maximum Pressure (continuous) = 140 bar
  • Maximum Output Power (continuous) = 2.4 kW
  • Pressure Fluid = Mineral based- HLP(DIN 51524) or HM(ISO 6743/4)
  • Temperature Range = -40°C to 140°C
  • Optimal Viscosity Range = 20 mm2/s to 75 mm2/s

HIAB Crane Specifications

  • Lifting height = 6.27m
  • Slewing angle = 322˚
  • Height of crane base above ground = 1072mm
  • Gross slewing torque = 3 kNm
  • Slewing speed = 19 ˚/s
  • Height in folded position = 2.5 m
  • Total Weight = 192kg (crane) + 173kg (Electrical Cabinet) = 365kg
  • Outreach hydraulic extension = 2.8m
  • Hydraulic boom extension = 4.2m

Winch Specifications

  • Motor speed = 329 RPM
  • Maximum Winch Speed = 56 m/min
  • Calibrated Winch Speed = 30m/min
  • Maximum lifting mass = 265 kg

Temperature Probe Specifications

  • Material: Stainless Steel
  • Functions:
    • Temperature measurement: 0˚C to 150˚C
    • Water detection: Electrical Circuit Detection through Liquids

Camera Specifications

24V Outdoor Pan and Tilt Unit

  • IP66 compliant
  • Pan Range = 0˚ to 360˚ continuous
  • Operating Temperature = -35˚C to 65˚C
  • Mass = 20kg
  • Maximum Load = 50kg

FLIR compact IP Thermography Camera

  • 640 x 512 pixel resolution @30Hz
  • Object Temperature Measurement Range = -25°C to +135°C
  • Power over Ethernet (PoE)

Structural Specifications – Panther Steel Tray

  • Fully welded construction
  • Powder coated white finish
  • 3mm checker plate floor
  • Tail light protection and side steps

Carrier Vehicle Specifications – 70 series Toyota Land Cruiser Ute

  • 4.5L V8 Turbo-Diesel engine
  • Dimensions:1790mm x 5220mm x 1970mm
  • Tray Dimensions: 2500mm x 1880mm
  • Kerb weight: 2180 kg
  • Maximum Carrying Weight (including occupants, fuel and cargo): 4720 kg

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"This system is customised and is the first of its kind. The technology is readily available, however it has been engineered into a solution that’s never been done before. Apart from reducing risks, it also saves a lot of time. It is an excellent demonstration of our values. The leadership, commitment and collaboration continues to be displayed between the team on site, the Technology Projects team, all the way to our EGM."
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