Statox 501 PID – VOC measurement in ppm range

PID technology is used to detect substances that cannot be detected with other methods. These include organic solvents and fuels, also known as VOCs (VOC = volatile organic carbons).

The to be measured gas molecule are split into charged particles by a very high-energy UV light beam within the PID detector (known as ionization) which are discharged on the plates of the capacitor. The resulting discharge current is proportional to the number of molecules and thus to the concentration.

The Statox 501 PID works with a 10.6 eV lamp and thus makes all substances measurable that can be ionized with 10.6 eV or less.

PID gas detectors are calibrated with isobutene. Since other substances are displayed with different sensitivities based on this gas, the corresponding calibration factors must be taken from a response-table in order to be able to display the concentration correctly. Our Statox 501 PID can be calibrated at the factory according to your requirements, so that it is ready for use immediately after delivery.

Similar to the voltage signal of a catalytic sensors, the Statox 501 PID delivers a linear output signal that is evaluated and displayed by our Statox 503 control module. A 4-20 mA analog output and the three powerful relays of the control module forward the measured value and, if necessary, alarm signals to a process control system or other peripheral devices.