MTL isolating interfaces are alternatives to shunt-diode safety barriers for protecting electrical circuits in hazardous areas.
They need no high-integrity earth and provide extra features such as signal amplification and relay functions. The isolation of hazardous- and safe-area circuits allows each to be earthed at any convenient point, simplifying installation and avoiding earthloop problems.
MTL offers the best choice in DIN-rail and backplane mounting isolators to meet the requirements of modern control interfacing systems. The DIN-rail mounting isolator ranges provide a wide choice of functions with high accuracy and reliability, while the backplane mounting products are established as the leading IS system interface with solutions for all the major DCS companies.
The MTL4500 range is the latest generation of backplane mounting products, building upon the heritage of MTL4000 and introducing many key application benefits. The MTL5500 range launches a new industry standard for DIN rail mounting products, ideally suited to a wide variety of interface tasks for process instrumentation, complemented by the well proven MTL5000 range.
In most applications MTL4500 modules can directly replace MTL4000 models but check with MTL if you have any concerns. Similarly, MTL5500 supplants MTL5000 range as the DIN rail interface family of choice. With this mounting arrangement, it is practical for models from both families to be used alongside each other during the transition phase from the old range to the new.
The following table shows the wide range of approvals and certificates that apply to the MTL4500 and MTL5500 ranges:-