6400 Intrinsic Safety
Barriers

Georg Fischer Signet offers single channel intrinsic safety barriers for use with the 515, 525 and 2517 paddlewheel flow sensors. Both versions use a 1/2 inch wide housing which snaps directly to a 35 mm DIN rail. Once mounted, an electrical connection is formed between the barrier and the rail. The rail serves as the intrinsic safety ground bus when connected to the designated grounding point. Two additional ground lugs are provided and may be used as a redundant grounding method or for terminating shields. Each barrier also contains a replaceable 160 mA fuse cartridge for each channel. Safety barriers are polarity sensitive devices and are available in +DC and AC voltage ratings. Advantages:

• One step, snap-on 35 mm DIN rail mounting and grounding
• Replaceable 160 mA fuse
• Lowest internal resistance
• Common 1/2 in. wide housing for single and dual channel versions
• Short-circuit proof connections

Standards:

• FM
• UL
• CSA Approved