The stone crushing industry plays an important role in industry and economy development. This industry produces numerous sizes of crushed stones based on the requirement of different construction activities such as roads, highways, bridges, buildings, canals etc. There are about 20,000 stone crushers in India and with the developing economy and accelerating process of urbanisation, there will be more stone crushers used in the construction of infrastructure for the country. AjitParalkar, Director, ACD Machine Control Co P Ltd, talks about the scope for its products in the growing Indian market and several benefits of using electronically controlled Vibration Safety Switches.

What scope do you see for your products in the Indian market?
Stone crushing is necessary to improve infrastructure like buildings, roads, bridges and development of other industries. Over the last 10 years, the construction sector has been registering strong growth rates in the range of 7-8 per cent. Since stone crushing is an allied industry of the construction sector, growth in construction sector may be considered as proxy for the growth in stone crushing sector, i.e. around 7-8 per cent.

In addition, for the building of roads, flyovers and bypasses, there is a mass and consistent need of crushed stone across the country. There are increasing allocations from budget in the Public Sector for Development Projects. Several projects are in progress and are being commenced shortly which will have high demand of crushed stone all over the country. Till now, safety and preventive machine maintenance were often neglected areas not considered necessary. However, now with safety being considered as the prime aspect and the advent of time management and TPM ideologies, people have realised that any down time is loss in earning.

Please talk about your innovative range of products.
Electronic vibration switch is designed as direct replacement of mechanical vibration switches. These mechanical switches being used in yesteryears have very little merit and served the purpose when the requirement was not stringent. As they rely on large impacts or inertia (both acceleration) nuisance tripping during start-up is a usual problem.

ACD vibration switches can be directly installed in place of mechanical vibration switches and offer immense advantages. The basic sensor is a piezoelectric accelerometer which has no moving parts. These electronically integrate the acceleration signal giving velocity signal. Vibration could be controlled very precisely with graduated controls.
ACD’s Wind Velocity Monitor/Switch was prompted by some serious crane accidents during erections of tall constructions, where wind conditions appear to have been a major contributing factor. This proves to be very useful device for safety of tower / crawler cranes.

The operation of a crane without knowledge of the expected wind forces can lead to a failure of components and/or turning over of the crane; in cases of negligence there is a risk to life.

The crane operator must be given enough warning to decide when the crane should be put out of service because of risks due to high winds and his inability to control the load. It is likely that many fatalities could have been avoided with proper wind condition monitoring.

ACD’s wind velocity monitor continuously monitors wind speed and provides two limit switches with one changeover relay contact per setting. Bright display allows the user to note the readings in poor lighting conditions, as well. The panel has a provision to set the alarm and danger limits (settable over full range) with one change over contact.

Why should one choose you?
The products we supply are mainly safety products which help in running the plant without danger to its surroundings. We believe in providing complete and timely assistance to our customers to ensure their operation runs without any interruptions. Our product comes backed with unconditional technical and maintenance support for the life of the product. We are always available for technical support and maintenance as and when required.

ACD Machine Control products offer multiple industrial features. Please elaborate.
ACD Machine Control Co. (P) Ltd. is a technology-based company which is in the field of vibration and air monitoring for the past 45 years. Our products are designed considering the on-site and field conditions in mind. All the instruments and field sensors are manufactured using aluminium which prevents corrosion while resisting physical damage ensuring long life of the instruments. Our instruments are “IP” certified providing further protection against the environment. We have options for providing various analogue as well digital outputs from our instruments, which enable us to easily integrate our instruments with various PLC and SCADA monitoring systems.

Downtime is loss in “Earning”. The “Electronic vibration safety switch”prevents catastrophic failure.
Ajit Paralkar, Director, ACD Machine Control Co P Ltd