Technical Parameters Category Specification Model MTL4842 Product Type HART Isolator / Signal Conditioner (Externally Powered) Input Signal 4-20 mA with superimposed HART digital signal. Output Signal 4-20 mA (isolated replica) with superimposed HART signal. Power Supply External Auxiliary Power (e.g., 20-30 V DC). This is the key difference from loop-powered versions. Isolation Galvanic Isolation between input, output, and power supply. HART Signal Handling Transparently passes the HART FSK signal. Key Features Ground Loop Elimination Yes. Noise Suppression Yes. Intrinsic Safety Can be part of an IS loop when used with a safety barrier. Accuracy Typically ±0.1% of span. Load Capacity Higher load capacity due to external power (e.g., up to 1000 Ω). Mounting Standard 35 mm DIN rail. Operating Temperature -20°C to +60°C
