Schuhmann Messtechnik – ST 1.00SDC – Universal Isolating Amplifier

The ST 1.00SDC from Schuhmann Messtechnik is a slim, DIN‑rail‑mount signal isolator and converter. It processes analog inputs (0 (4)…20 mA or 0…10 V), isolates them galvanically (3‑way, 3.75 kV), and outputs a standardized analog signal in the same ranges. A notable feature is the integrated Live‑Zero Monitor, which detects loss of signal and switches a transistor output—ideal for safety monitoring of broken sensor circuits. The unit is compact (6.2 mm width) and consumes under 1.5 W on a supply of 20–30 V DC.

 Key Features

• Model / P/N: ST 1.00SDC (Schuhmann Messtechnik)  

• Input: 0(4)…20 mA or 0…10 V analog — switch‑selectable via DIP switches  

• Output: 0(4)…20 mA or 0…10 V analog, calibrated across all ranges  

• Live‑Zero Monitor: Transistor output activates on input-signal loss or drop below live-zero threshold  

• Isolation: 3‑way galvanic separation rated 3.75 kV between input, output, and supply  

• Supply: 20–30 V DC at <1.5 W; negligible influence (<0.1 %) on measurement accuracy  

• Indicators & Wiring: Front-panel status LED; screw-clamp terminals for easy wiring  

• Dimensions: Slim 6.2 mm housing for mounting on standard DIN rails