BASIC INFO
MTL3000 series MTL3011 AND MTL3012 SWITCH /PROXIMITY DETECTOR RELAYS has been discontinued for sale.
MTL3000 Series interface units offered a compact and easy-to-use means for communicating safely with process measuring, indicating, actuating and local control equipment in hazardous areas. The comprehensive range of models included analogue, switch and serial-digital signals in both directions, amplifying or otherwise conditioning them as required and at the same time providing world wide certified explosion protection for equipment and wiring in all zones and all explosive atmospheres. It also provided an alternative to the shunt-diode safety barrier where isolation was essential or preferred or a high-integrity earth was not readily available.
The MTL5500 Series are the recommended replacements for this series.
MTL3011 – volt-free contacts MTL3012 – solid state
These basically similar units both enable a safe-area load to be controlled by a proximity detector or switch located in a hazardous
area, the MTL3011 having a relay output for general use, and the MTL3012 a floating solid-state on/off switch compatible with logic
circuits. In both units a built-in phase-reverse control allows an alarm condition (output open) to be signalled for either state of the sensor. A line-fault detection feature opens the output in the event of short or open-circuit lines: intended for use primarily with proximity detectors, it can also be used with switches made to resemble them electrically by adding two resistors, or disabled by a link if not required.
MTL3000 series
Product CodeDescription
MTL3011 Switch/proximity detector relay - volt-free contacts
MTL3012 Switch/proximity detector relay - solid state
MTL3013 Switch/proximity detector relay - 2-channel
MTL3014 Switch/proximity detector relay - dual outputs
MTL3021_22 Solenoid/alarm driver ~ IIC loop powered
MTL3041 Repeater power supply - 4/20mA for 2-wire transmitters
MTL3042 DC isolator - 4/20mA loop powered for I/P converters
MTL3043 DC isolator - 1/40mA for fire and smoke detctors
MTL3045 Isolating driver - 4/20mA for I/P converters
MTL3046B Repeater power supply - for ‘smart’ transmitters
MTL3052 Digital isolator - for signals up to 10kHz
MTL3054 Communications isolator/ repeater
MTL3058_59 Serial data interface ~ RS232 general purpose
MTL3071 Temperature converter ~ THC or emf input
MTL3072 Temperature converter ~ 3-wire RTD input
MTL3073 Temperature converter ~ THC or RTD input
MTL3081 Millivolt isolator - for low-level inputs
MTL3099 Dummy isolator - for terminating and isolating unused cores
MTL3992 High stability power supply
