MTL3071 TEMPERATURE CONVERTER THC or emf input.

The MTL3071 accepts a low-level dc signal from a temperature sensor in a hazardous area, and converts it into a 4/20mA loop current in the safe area proportional to millivolts (but not temperature). It can monitor any one of six types of thermocouple, or a millivolt signal from an emf source. Calibration is carried out by the user via controls located in the top and the side of the unit. This can be effected without the use of a thermocouple since the unit's built-in cold junction compensation (CJC) is zeroed at 0°C, and can be bypassed.

Thermocouple type is switch-selectable, as is the optional safety drive which initiates either a high or low output in the event of thermocouple burnout or any cable breakage. Input zero and span are selected by switches (coarse adjustment) and potentiometers (fine adjustment).

MTL3000 series

Product Code Description

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