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

The reason for dual sensor technology:
Imagine the flow sensor in the sampling device has its measured value altered due to a defect and allows an actual flow which is 25 % too high. The electronics compensates the volume flow to the 30 l/min specified by the flow sensor and also increments the volume to 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 correlate with the display.

Here, dual sensor technology is used:
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 in 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 utility model protection No. 20 2004 005 627.5

Technical data
PC-Software
Optional DUAL Sensor
Optional transport case

Product over view
(Compact system MBASS30)