FEATURES
Rosemount Analytical Model PC-1 on-line Particle Counter is intended for the determination of particle count and size distribution in a variety of liquid streams. Applications range from monitoring filter performance in potable water and wastewater treatment plants to measuring suspended iron and copper corrosion particles in steam electric power plants. Particle counting is generally more sensitive than turbidity measurements for early detection of filter breakthrough.

The Model PC-1 has a dynamic range of 2-400 µm with a signal-to-noise ratio of 3:1 at 2 µm. The coincidence limit at 15,000 particles/mL is less than 10%, which makes the PC-1 reading extremely reliable. The volumetric method used to determine particle counts is performed by means of light blockage of an infrared laser onto a photo-cell.

The analyzer features an entirely external sampling and measurement system. There is no danger of sample leaks damaging sensitive electronic components. The constant head overflow cup ensures stable reproducible flow and accurate particle counts. The large (1 mm x 1 mm) flow cell is easy to clean and resists clogging.

Using Tracware digital interface with the Model PC-1 is strongly recommended. Tracware lets the user customize particle size ranges, change sampling duration and frequency, plot trends, and prepare reports. Tracware runs on Windows 3.1, Windows 95/98, or Windows NT. The user must provide the personal computer for running Tracware. For direct connection to a SCADA system, DDE and OPC servers with client software are available on the same disk with Tracware.

Digital communication is through a non-proprietary serial interface. Thirty-two particle counters can be multi-dropped on a RS485 serial communications loop. The maximum network length is 4000 ft.

The Model PC-1 has four 4-20 mA outputs and accepts four 0-5 VDC inputs. The four 4-20 mA outputs are assigned to the first four channels. These channels are jumper configurable to three ranges: 0-200 c/mL; 0-2,000 c/mL; and 0-20,000 c/ML. The four 0-5 VDC inputs can be used to accept additional information from turbidity analyzers, flow meters, etc. A backwash terminal is available to alert the user that a filter backwash is occurring.
Data Sheet