MBASS30 (only informational)

As the only microbiological air sampling system on the market, the MBASS30 can also be equipped with the optional DUAL sensor. Thus, the internal monitoring of the volume flow control can be considerably enhanced. This is a feature particularly acclaimed by accredited samplers.

The reason for the DUAL sensor technology:
Imagine that due to an defect, the flow sensor in the sampling device outputs a measured value that is 25 % higher than the actual flow. The flow regulation compensates the volume flow to the 30 l/min measured by the flow sensor and also integrates the volume with 30 l/min over time. However, the defect in the flow sensor means the actual volume flow is only 24 l/min. The sampling volume is thus only 80 l instead of the 100 l displayed.

There are 2 consequences of this:
1. the reduced volume flow may adversely affect the filtration efficiency and
2. the actual sample volume may not match the displayed value

This is how the DUAL sensor technology works:
The task of the optional DUAL sensor unit is to continually monitor for any sampling errors like that explained above during the sampling process and notify their occurrence. The DUAL sensor is a second, redundant flow sensor with dedicated measurement channel, which is fully integrated into the system. The measured values of both flow sensors are continually monitored for any disparities during the sampling. In the event of any difference detected between both flow sensors which exceeds a period of 10 seconds, the sampling process is suspended and an alarm is triggered. In the event of a defect, the DUAL sensor can be deactivated on-site, meaning the sampling need not be suspended. After clarifying the cause of the sensor disparity, the sets of sampling data can be corrected in line with the actual volume flow and sample volumes.

The DUAL sensor technology is usable with all MBASS30 systems.

MBASS30 with the optional DUAL sensor technology has the protection of registred design No. 20 2004 005 627.5