072-0500 Alphasense User Manual
OPC-R1 Optical Particle Counter Issue 1
Alphasense Ltd Page 2 of 33 February 2019
Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. Essex.CM77 7AA. UK
Tel: +44 (0) 1376 556700 - Fax: +44 (0) 1376 335899
Email: sensors@alphasense.com - Web: www.alphasense.com
1 Quick Start
The purpose of this manual is to explain how to set up, install and use the Alphasense Optical
Particle Counter OPC-R1 for measuring PM
1
, PM
2.5
and PM
10
, as well as measuring particle size
distributions in real time. Note it is also possible to set the unit up to measure PM
4.25
.
When using this OPC for the first time we recommend that you use the Alphasense SPI adapter.
This will enable you to very quickly use the OPC at your desk by running it off a Windows PC or
laptop using the Alphasense software. Apple and Unix compatible software are not available.
Initially a full deployment package will have been provided with the OPC-R1. In the future this will
be available via the web site or through contact with Alphasense.
Full instructions for carrying out the installation, (specifically a driver must be installed for the SPI
adapter) and for the use of the software are in Appendix B and section 9. Please note the driver
and the SPI adapter are the same as that used for the OPC-N2 and N3.
You can view the data options along with the data resolution and range when the OPC-R1 is
connected to a PC running the Alphasense-supplied software. Please note that is not the same
software that runs the OPC-N2 or the OPC-N3. This also provides a useful reference to those
customers who wish to develop their own software.
The OPC-R1, unlike the OPC-N2 and N3, does not have a standalone mode where the data is
stored directly on an onboard SD card.
Temperature and humidity sensors are fitted as standard on the OPC-R1. Temperature and
humidity compensation is not currently carried out but this will be offered in the future.
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