DynaSampler

Pre-dilution technique for hot, wet and high strength odour is recommended to maintain sample integrity. Pre-dilution is used not only to prevent sample losses from hot and wet stack sources but also to prevent contamination of the olfactometer by highly odorous samples. The latter can extend the working dilution range of the olfactometer.

Stack conditions such as pressure, temperature and moisture level can affect the dilution ratios which are normally determined under the normal conditions. For example, the high stack pressure can increase the stack gas to be collected or the hight temperature stack has less mass under normal temperature. Despite the use of in-situ tracer gas calibration, the performance of the system is largely dependent on the stack conditions and calibration procedures. In fact, the dilution ratios from most predilution stack samplers are assumed and is not measured in the field condition.

DynaSampler offers an unique feature to allow the dilution ratio to be determined during the sampling under the field conditions. The efficiency of the predilution is continousely monitored using built-in temperature and humidity sensors and displayed on a pockPC via a wireless connection. This means that no calibration required for the DynaSampler except for the calibration of mass flow meter. The measured dilution ratio takes into account the stack conditions (pressure, temperature and humidity).

DynaSampler predilution probe

The DynaSampeelr is light and portable. The operation of the DynaSampler is simple and quick. The wireless connection enables the process to be monitored and datalogged on a pockPC. The cleaning of the Dynasampler is very efficient in the field and can also be carried out through the washing in the laboroatry.