Mechanical Control and Interlock System to avoid Operating Errors at Valves
Valve interlocks are used everywhere where a sequence of valves helps protect personnel and machinery.
These are mainly: oil boring islands, chemical plants and refineries, or the gas industry as well as electricity and water suppliers.

Valves have a very important safety function in many industrial processes. An operating error at a valve can have dramatic consequences – personal injuries, damages to the plant, or even contamination of the environment can be a result. Thus, the safe operation of valves must be guaranteed.

By using the Haake Safety Valve interlocks you can be sure the correct sequence of operating procedures will always be adhered to.

Haake products can be installed at every lever-operated or hand-wheel valve, without damaging the mounting. The interlocks are robust, easily handled and clearly show every position of the valve (tOPen).

Before the installation of Haake Safety Valve interlock systems, the requirements and conditions of the operation are established in co-operation with our users / customers.

Safety of machinery
Hazardous machines and systems are frequently equipped with safety elements (safety doors) with a locking mechanism to protect the operator.

Their function is:
a) to prevent hazardous machine functions if the safety door is not closed and locked,
b) to keep the safety door closed and locked until the risk of injury has passed.

A general example: A machine has one or more maintenance openings (part-body access) or is accessible through one or more doors (full-body access). On the one hand, it has to be secured that the machine is switched off, before one of these openings or doors can be opened. On the other hand, the machine must only be re-set into operation, if all openings and doors are closed, and nobody is present inside the machine.

Protection of hazardous areas (presence and access sensing)
According to the Machinery Directive, machines may only be put into operation once comprehensive safety measures have been taken to protect the persons working with these machines. Part of these measures is the protection of hazardous areas at machines, where presence or contact with running machine is to be prevented, because of the risks created by the machine.

To protect persons against risks of this kind, pressure sensitive safety mats are employed. At devices such as machines, machining centres, presses, robot cells, high-shelf warehouses and many others, safety mats immediately switch off the power source, when the mat is stepped on. As long as the person stays on the mat, the machine cannot be set back into operation.

Either electrically operating devices to the contact-make principle (two conductive strips or layers are brought together when the safety mat is operated), or opto-electronic systems (a light beam is interrupted) are available on the market. Such configurations need a special evaluator for transforming and processing the output signal.
The HSM Safety Mat uses mechanical positive-break contacts. Therefore, an additional safety control unit is not needed.

"Cash For Clunkers Program"

Send us your old safety switches, and we'll provide you with a 15% discount on your replacement order. Any brand, any condition.

Please ask for an RMA, prior to shipping the "Clunkers".

Tri-Tronics has introduced its new color sensor. Ask us for a demonstration.

   

2180 Fasan Drive

Oldcastle, ON

NOR 1L0

P: 519.737.0311

F: 519.737.0314

Toll Free: 1.800.711.1900