MTL4045B/4045C ISOLATING DRIVERS 4/20mA, with line fault detection.

The MTL4045B accepts a 4/20mA signal from a safe-area controller and repeats it to drive a current/pressure (I/P) converter or any other load up to 800Ω in a hazardous area. The output capability is 16V at 20mA and the drop across the input terminals is low (4V). The input and output circuits float independently. Process controllers with a readback facility can detect an open or short circuit in the field wiring since, if this occurs, the resistance across the input terminals will change to a preset high value.

The MTL4045C is identical to the MTL4045B except that it provides open circuit detection only (no short circuit detection). The MTL4045B short circuit detection feature may not be compatible with some I/P positioners which have a high self-inductance. Consult your MTL representative for advice.

MTL4000 series

Product Code Description

1. Analogue Input

MTL4041A  Current repeater

MTL4041B  Repeater power supply

MTL4041P  High-power repeater power supply

MTL4041T  Repeater power supply

MTL4042  Repeater power supply IIB

MTL4043  Repeater power supply HART

MTL4044  Repeater power supply

MTL4044D  Repeater power supply

MTL4048  Loop powered isolator  

2. Analogue Output

MTL4045B_C  Isolating driver  

MTL4046P  High-power isolating driver HART

MTL4046S  Isolating driver HART  

MTL4046_C  Isolating driver HART  

3. Digital Input

MTL4013  Switch/proximity detector interface

MTL4014  Switch/proximity detector interface  

MTL4015  Switch/proximity detector interface ~United Electric series  

MTL4016  Switch/proximity detector interface  

MTL4017  Switch/proximity detector interface

MTL4113P  Failsafe switch/proximity detector interface

4. Digital Output

MTL4021  Solenoid/alarm driver

MTL4021S  Solenoid/alarm driver

MTL4023  Solenoid/alarm driver

MTL4024  Solenoid/alarm driver

MTL4025  Solenoid/alarm driver

MTL4215  Switch operated relay

MTL4216  Switch operated relay

5. Temperature Input

MTL4073  Temperature converter

MTL4081  Millivolt/thermocouple isolator

MTL4083  Voltage isolator

6. General

MTL4031  Vibration transducer interface

MTL4032  Pulse isolator

MTL4061  Fire and smoke detector interface

MTL4099  Dummy isolator  

MTL4099N  General purpose feed-through module

MTL4220  Earth leakage detector  

MTL4403  High-level trip amplifier

MTL4421RS  General purpose switch operated relay