Product Description
R. STAHL 9170/20-10-21 Switching Repeater
The R. STAHL 9170/20-10-21 is a high-integrity, single-channel switching repeater designed for the intrinsically safe operation of NAMUR sensors, optocouplers, and mechanical contacts located in hazardous areas. This device provides reliable 3-way galvanic isolation between the input, output, and auxiliary power circuits, ensuring signal integrity and system safety. It features a relay output with a change-over contact and incorporates line fault detection (LFD) for short-circuits and wire breaks, with an LED indicator for diagnostics. The operating mode (N/O or N/C) and LFD can be easily configured via DIP switches, making it a versatile solution for process automation and control systems in explosive atmospheres.
Technical Specifications:
- Number of Channels: 1
- Input Signal: Intrinsically safe for NAMUR sensors (EN 60947-5-6) or potential-free contacts
- Output Signal: Relay with 1 change-over contact (N/O)
- Auxiliary Power: 24 V DC (18 to 31.2 V DC)
- Explosion Protection: ATEX, IECEx certified for installation in Zone 2
- Ambient Temperature: -20 °C to +70 °C (-4 °F to +158 °F)
- Features: Line Fault Detection (LFD), configurable via DIP switches, 3-way isolation
R. STAHL 9170/20-10-21 Switching Repeater
Shop the R. STAHL 9170/20-10-21, a 1-channel intrinsically safe switching repeater and isolator for NAMUR sensors in hazardous areas. Features a relay output, line fault detection, and Zone 2 installation.
