Mobile Cranes

Before mobile cranes can be safely operated it is necessary to level and steady the base within a certain tolerance. During operation it is also necessary to monitor the base to ensure subsidence does not cause the crane to become unstable, and in some applications also to monitor the boom angle. Level Developments design and manufacture a wide range of mechanical and electronic sensors for this purpose and can provide off the shelf or customised solutions to meet any application.

mobile-crane-inclinometers-levels

Base Levelling

Base levelling and base monitoring are an important part of the safe use of a mobile crane. The crane needs to be levelled in two axis to a reasonably high degree of accuracy. For this application we manufacture a wide range of circular levelling indicators which can be used to manually check the angle, as well as a range of high quality low cost electronic sensors which can provide information to the machine control system or to a local display. We also offer high accuracy tilt switches which can be used to monitor the base and raise and alarm if the angle changes beyond a preset threshold.

Products

  • Inclinometer Sensors
    LCH-A-D, DAS, MAS-2, SOLAR-2
  • Digital Displays
    PDTS, IDS
  • Circular Levels
    AVF100 series, CG Series, 5229 series

Boom Angle Measurement

Typically a boom angle sensor would be a single axis sensor with a measurement range from 0 to 90°. Mechanical ball indicators can be mounted directly to the boom to give a visual indication to the operator. Electronic sensors can be used to report angle to the machine control system, or to a local display. Knowing the boom angle can provide useful information to the operator and also help ensure the crane is operated within it’s safe limits. Our products are tough and reliable, and available with a range of output types to interface to most control systems, including the industry standard CAN J1939.

Products

  • Inclinometer Sensors
    LCH-360, LCH-A-S, MAS-1, SOLAR-360
  • Digital Displays
    PDTS, IDS
  • Ball Inclinometers

Inclinometer Sensors

Part No. Image Size
(LxWxH mm)
No of Axis Range
(°)
Output Type Resolution (°) Accuracy (°)
(20°C)
Supply Voltage
Min - Max (V)
Seal Rating
VS-05-C-2-6 VS-05-C-2-6 -
90x60x28 2 ±5 RS232 and 4-20mA 0.001 0.015 12 - 30 IP67
MAS-2-DR-15-2-CANJ MAS-2-DR-15-2-CANJ -
44x41x12.5 2 ±15 CAN J1939 0.02 0.1 6.5 - 36 IP67 & IP69K

Digital Inclinometers

Part No. Image No of
Axis
Range
(°)
Display
Output
Resolution
(°)
Accuracy (°)
(20°C)
Power Source Sensor Size
(LxWxH mm)
Display Size
(LxWxH mm)
Sensor Seal Rating Display Seal Rating
PDTS-SOLAR2-01
2 ±30 2 x SPCO Relay and USB 0.001 ±0.030 External DC supply 75x37.5x15 72x72x23.5 IP67 IP65 (when panel mounted)

Ball and Bubble Inclinometers

Part No. Image Length
(mm)
Width
(mm)
Height
(mm)
Range Measuring Type Case Material
BI-50 BI-50 -
162 72 14 ±50° Ball Aluminium
5710/1 5710/1 -
70 10 70 0-90° Ball Black anodised Aluminium
BI-10 BI-10 -
90 35 9 ±10° Ball Black anodised Aluminium
BI-45 BI-45 -
100 50 9 ±45° Ball Aluminium

Surface Mounted Circular Levels

Part No. Image Diameter
(mm)
Height
(mm)
Sensitivity Sensitivity
Unit
Vial Type Liquid Colour
5229/1 5229/1 -
100 20 3600 1 degree per 1.7mm Acrylic (PMMA) Clear

Plastic Circular Levels

Part No. Image Diameter
(mm)
Height
(mm)
Sensitivity Sensitivity
Unit
Backing Colour Liquid Colour
AVF100/10 AVF100/10 -
100 16.4 7200 2 degrees per 4mm White Clear