SIRA-ML – The Mobile Filter Measurement Device

Gamma-spectroscopic filter analysis directly on site

Air samplers are used in a variety of applications to collect radioactive aerosols. When anything other than a gross count rate is needed, the filters are usually sent to a laboratory for retrospective analysis.

What if time is critical and the analysis results need to be available as quickly as possible?
Retrofitting the required gamma spectroscopy into the air sampler itself is often not possible, would deprive the device of its desired versatility, or dramatically increase its cost.

From now on, SIRA-ML provides on-site gamma analysis of filters or cartridges.
SIRA-ML combines the strengths of our SIRA aerosol monitor with the compactness and simplicity of the mobile gamma spectroscopy solution MONA-EPR used in emergency preparedness. The result is a ready-to-use, powerful and at the same time easy-to-operate device: open the case, switch it on, place the filter with the sample, press start – and shortly afterwards, SIRA-ML displays the identified radionuclides and the determined activity values. The display shows the measurement improve as the preset count continues.

Figure 1: SIRA-ML Overview

SIRA-ML is based on the Scienta Envinet Spectroscopy Platform, SESP, and thus draws on the components, software, and experience of thousands of SESP devices in the field – and offers the following functions:

• Configurable measurement times with continuously updated analysis results
• Local display showing all relevant information
• Access to detailed information via Wi-Fi using a smartphone, tablet or notebook – using a standard web browser, without needing additional software
• Integration into the NMC monitoring network centre with direct data transmission via LTE
• Visual and audible alarms when contamination is detected
• Integrated battery for autonomous operation with charging via USB-C

SIRA-ML supports numerous filter and cartridge sizes. Suitable adapters for common formats are already included in the scope of delivery. Additional adapters can be produced independently using 3D printing based on the supplied CAD examples or obtained directly from Scienta Envinet together with the corresponding quantitative measurement profile.

Figure 2: Screenshot of the SIRA-ML web interface for tablets, notebooks and desktops

Would you like to learn more about SIRA-ML? Contact our team of experts at This email address is being protected from spambots. You need JavaScript enabled to view it. and arrange a personal consultation. We look forward to hearing from you.

Best regards
Your Scienta Envinet Team