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Signal Interface

Our signal interface products provide signal conversion and electrical isolation between sensors and other field devices and a control circuit. Intrinsic safety modules add Zener diodes, which limit the amount of electrical energy on intrinsically safe circuits.
Signal Interface
  • Signal Conditioners
    • Converter Barriers
    • Converter Barriers
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    • Zener Barriers
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Main Image

Signal Conditioners

Our Bulletin 931N Nano and 931S Smart signal conditioners provide a full range of options to isolate, convert, split, linearize, and amplify a broad range of signal types. These products help protect your expensive control system from transients and noise while eliminating ground loop/noise-induced errors in process measurements through galvanic isolation. There are products with dual channels, input and output loop powered options. Products in these families offer excellent performance in terms of galvanic isolation, accuracy, response time, and power dissipation.

Product Details
Intrinsic Safety Modules

Our intrinsic safety modules connect intrinsically safe rated equipment, such as transmitters, solenoids, proximity sensors and encapsulated assemblies, with control systems. An intrinsic safety approach can be more cost-effective than other hazardous location protection/mitigation strategies in Class l, Division 1 (Zones 0 and 1) locations.

937CU-AISTR-DC1_P3_CMYK.tif
937C Converter Barriers

Our Bulletin 937C Converter Barriers add functionality to the isolators by receiving signals from a hazardous area instrument i.e., temperature sensors, or load cells, and then converting them to an industry standardized signal such as 0/4…20mA or 0/2…10V. Pulse evaluation units process a frequency signal at the input. A lead fault monitoring system signals a lead breakage or lead short-circuit on the signal cables.

Product Details
937TS-DISAR-KD2_P3_CMYK.tif
937T Isolator Barriers

Our 937T Isolator Barriers include galvanic optical or transformer isolation, these modules provide an interface within the intrinsic safety circuit that is electrically separated from the control system. A key advantage of isolated barriers is that they do not require a ground between the module and the intrinsically safe device. Available in 12.5 mm (0.5 in) and 20mm (0.8 in) widths.

Product Details
937ZH_Z-Assembly_14_22_01_P1_CMYK.tif
937Z Zener Barriers

Our Bulletin 937Z Zener Barriers provide protection for electrical signals within hazardous areas. These barriers feature a narrow profile of just 12.5 mm to maximize control panel space. They also prevent the transfer of unacceptably high energy from the safe area into the hazardous area. Our Zener Barriers include positive polarity, which means the anodes of the Zener diodes are grounded. Depending on the application, increased or decreased intrinsic safety parameters apply for serial or parallel connection.

Product Details
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