The way to weigh16 January 2014
Being able to calculate accurately an object’s weight is a necessary and potentially life saving task that accompanies many a lift. In this month’s equipment review Cranes Today looks at the products that assist in this task.
Elion has numerous weighing products compatible with cranes. Among them are the Ron 2125 and Ron 2150 load cells these allow the user to either hold the display in hand or attach it to the load cell to be read from a safe distance.
Having the display separate from the load cell also increases the system's durability. Both models are small and light for easy portability with low headroom loss and come with a large 25mm or 50mm display for maximum readability.
Another product is the Ron 2000 is a small and light portable dynamometer for economic and easy-to-operate weighing. This digital dynamometer with strain gauge type load cell and reliable tension load meters is useful for force, tension, load and traction control, weighing during lifting, overload prevention and cable tension measurement. The indicator is separate from the load cell, ensuring user safety and system durability.
Dynamic Load Measurement
The TL-2.0Pro is the second generation telemetry tensile link load cell from Dynamic Load Measurement. The device acts as a light weight wireless tension measuring unit that the manufacturer says combines a high level of performance with a robust design for rugged environments.
The product can be used for a range of different applications such as: Overhead weighing, vessel weighing, testing, load cell hire and certification. The device has a range of up to 200m and a battery life of 700hrs the TL- 2.0Pro can be paired with one or a multiple number of TW-2.0 Telemetry Hand Held Displays.
Also on offer from the company is the TW-2.0 telemetry hand held display has a multifunctional wireless load monitoring unit designed to be used in conjunction any DLM manufactured load cell fitted with a transmitter module.
The product features built in linearisation that Dynamic Load Measurement says provides reliable load readings while also being simple to use.
Rice Lake Weighing Systems
The MSI-3460 from Rice Lake Weighing Systems is a crane scale for light to medium capacity applications. The scale includes the ScaleCore measurement module providing weighing features of previous Challenger designs with additional product developments.
Long range viewing has been enhanced with a larger 1.5in LED digital display and resolution settings of up to 10,000 divisions for precise 0.1% loading accuracy over a broad capacity range from 250 to 15,000lb. Product operating time is extended to over 80 plus hours with a single 6-volt rechargeable battery.
The original signature Challenger packaging has been upgraded to NEMA 4 / IP65 levels. Manufactured in the USA in strict compliance with the country's safety standards, Challenger continues to sustain minimum 200% safe and 500% ultimate load ratings. A ScaleCore electronics retrofit kit is also available for upgrading existing MSI-3260 or MSI-3360 Challengers to new generation MSI-3460.
Müller Industrie- Elektronik
The ALM-HD2 is the new analogue strain gauge amplifier from Müller Industrie-Elektronik. The manufacturer says that the user-friendly operation has been maintained from the previous ALM-HD model as well as the adjustment of the input sensitivity (0.1mV/V to 4mV/V) selectable by DIP-switches.
As an option, two adjustable limit value switches are integrated as potential-free changeover contacts. As input signal up to four resistance strain gauge sensors can be connected parallel in full bridges with 350 ohms, which can be evaluated as sum signal.
The output signal of the ALMHD2 offers a switchable analogue output 0 (4) to + / - 20 mA or 0 (2) to + / - 10 V. The sensor supply voltage is (4 to 14 V) adjustable. The housing material is in the new version of robust and durable plastic (ASA 757G Luran S). This has the result that the new analog measurement amplifier is now also suitable for long-term use in the shipping industry, for example, in rough seawater environment and wherever with corresponding receivers a strain gauge force measurement technique is required.