OPSIS SM200 Beta-attenuation Particulate Monitor / Gravimetric Sampler*

The SM200 is an automatic particulate monitor for monitoring of PM10 and PM2.5. A filter is loaded into the filter magazine and a Geiger counter detects the beta attenuation before and after sampling. The response time of the instrument is 1–24 hours.

It's a cost-effective solution for particulate matter monitoring and sampling. It can be completely remote controlled and is ideally suited for use in modern monitoring stations.

With a reliable, technologically advanced automatic filter cassette system the SM200 can be set-up to gravimrically sample particulate matter for up to 40 days. After which time the exposed filters (40 filters, 1 filter per day) can then be analysed for composition and weighed for mass concentration. For those who would like data resolution down to less than 1 hour, the optional RTPM (real-time particulate module) uses a laser nepthalometer system to measure concentration levels down to 1-minute resolution.

The MCERTS Approved SM200 is a combined 40 x filter gravimetric sampler fully meeting the EU/UK CEN 1234-1 Equivalency criteria.


All Opsis instruments are sold with 1 years parts warranty as STANDARD.

The warranty can, at additional cost, be extended for total peace of mind. Please call to discuss options for this.

Opsis instruments require periodic service and maintenance to both satisfy the requirements of the warranty and to ensure that the highest possible data capture rates are maintained.

Enviro Technology has a large team of in-house and field based service engineers who regularly receive “factory training” and can provide the very best levels of service and support.

Enviro Technology and Opsis recommend that the SM200 Particualte Monitor is serviced every 6 months of continuous operation.

A wide range of servicing options are available and can include:

- Pre-scheduled on-site planned maintenance (every 6 months).

- Emergency on-site call-out within agreed timescales (i.e. 48 hours).

- Supply of consumable items (i.e. sample inlet filters).

- Supply of calibration gases and permeation tubes.

- Supply of permeation tube calibrators and zero air generators

- Remote analyser “health-checks” and diagnostics.

- Return-to-base servicing options.

- Local site operation services.

- Data collection and data management services.

Please contact either our sales or customer services teams to request a quotation for on going servicing and maintenance on this analyser.

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