ppmBereich

ppmBereich is a term used in technical documentation and instrumentation to denote the concentration span, in parts per million, that a sensor or instrument can measure or display. It is commonly applied in gas analysis, air quality monitoring, industrial process control, and water quality testing. The value is typically shown as a range, such as 0–1000 ppm or 0–10 ppm, and may be accompanied by information about accuracy, linearity, and response time.

Definition and meaning: Parts per million is a ratio that is often expressed as ppmv for gases or ppmw for liquids. The ppmBereich specifies the lower and upper limits of the instrument’s specified linear response, within which readings are calibrated and considered reliable. It is common for devices to have different ranges or auto-ranging capabilities to accommodate a wide variety of concentrations, sometimes with different accuracy figures for each sub-range.

Usage and interpretation: Within the ppmBereich, measurements are subject to the device’s specified accuracy and repeatability. If concentrations exceed the upper limit, readings may saturate or require a different measurement range or dilution. If concentrations fall below the lower limit, readings may approach noise or drift, reducing reliability. Environmental factors such as temperature, pressure, and humidity can influence readings and, in some cases, shift the effective range.

Relation to standards and documentation: There is no single global standard for ppmBereich; it is defined by the manufacturer in conjunction with the device’s specifications. Users should consult the data sheet for the exact range, calibration requirements, units (ppmv, ppmw, or other), and performance metrics to ensure appropriate interpretation and comparison of measurements.