A signal conditioner helps to provide precise measurements, which are essential for accurate data acquisition and machine-control. These instruments can perform an additional number of different functions. These include:

• Signal Conversion – The core feature of signal conditioners. Pick up signal and convert it into a higher level of electrical signal.
• Linearisation – Interpreting signal from software (where applicable) for higher accuracy. Common for thermocouple signals.
• Amplifying – Increasing the signal for processing or digitisation. Performed by upping the resolution of the input signal or increasing the signal-to-noise ratio.
• Filtering – Where the signal frequency spectrum is filtered to only include the valid data and block any noise.
• Evaluation and smart-functions – Extra functions for signal evaluation and measurement data preprocessing, to monitor and evaluate warning and alarms directly via an electrical switching output.
• Interfaces – Common analog interfaces are voltage (+/-10V) or current signals (+/-20mA) for simple management, but uses multiple wires. Digital interfaces have Ethernet capability (including PROFINET) and connects several components with only one wire.

A signal barrier would be integrated to prevent explosions in hazardous areas. By linking the signal barrier to a safe area, a barrier minimises the current of any potential ignition source near fire and oxygen.

A range of products from STATUS INSTRUMENTS and Pepperl+Fuchs offer the complete solution to your signal conditioning. See the PDF files in the Downloads section (top banner) for more information on each range, or contact our process instrumentation team directly with any inquiries you have.