The PCM3 portable battery-powered open channel flow meter and datalogging system
is designed for the harsh field conditions of sewers and wastewater treatment
plants and is contained in a robust, submersible, waterproof and corrosion-resistant
housing.
Advantages
- For all channel shapes, sizes, weirs and flumes
- Battery operated, portable
- Additional inputs for temperature, pH, conductivity and ultrasonic
level sensor
- Plug-in memory card system with 2MB datalogging capacity
- System operation by PC or on-board membrane keypad and LCD display
The PCM3 open channel flow meter consists of a fully bi-directional velocity
and depth sensor, a datalogger and support software for data retrieval and analysis.
Additionally, temperature and pH can be measured and logged. Further analogue
inputs for logging a second level and conductivity are available. This OCM also
allows a connection of a rain gauge input to correlate flow data to rainfall
and also offers flow proportional triggering of wastewater samplers with the
sampler trigger output. This makes this OCM the complete flow monitoring system...
This OCM has a menu-driven membrane keypad and LCD display for programming
and status check and field replaceable memory card for datalogging, which greatly
simplifies field data retrieval. Also available is a RS232 direct serial interface
for a PC or a laptop.
In order to obtain maximum functionality this OCM offers 2 different operation
modes: event based datalogging via a sensor-integrated event detector or data
based datalogging within a defined measurement period.
The event measurement is particularly useful for recording sudden surges (eg
first flush storm) or battery conservation where operation involves long dry
spells (stormwater monitoring). The date-based measurement offers delayed start
and end of measurement programs/cyclical repititions. The OCM hydrodynamic flow
optimised combination sensor measures the depth, average velocity and temperature.
Using the Doppler ultrasonic measurement principle and the membrane-free pressure
depth transducer, the sensor is not affected by fouling due to oil, grease or
algal/bacterial growth. Doppler signals are assessed for their frequencies by
special software that calculates the true average velocity.
Additional information available to the user include signal strength, quality
and the velocity spectrum. The depth sensor automatically zeroes itself before
each reading. With the propreitary NIVUS system, the sensor has uaranteed long
time zero stability. However, an alternative ultrasonic level sensor can replace
the pressure sensor.
Mounting systems for pipes, egg-shaped channels and open-channels permit for
a fast assembly and deployment of sensors without any tools.
Applications
- Sewer Monitoring - System Capacities/Trending, Planning
and Control
- Stormwater Flow Monitoring
- User Discharge Billing Networks
- Waste Water Treatment Plant Monitoring
- Natural Streams & Rivers
- Combined Sewer Overflow Studies
- Infiltration and Inflow Analysis
- Master Plan Studies
- Industrial Discharge Monitoring
- NPDES Monitoring
| Flow Range |
30 mm/s to 6000 mm/s bi-directional |
| Accuracy |
?1% of reading or ?30mm/s. Absolute zero stable |
| Minimum Depth |
1mm (above sensor) |
Operating Temperature |
-20?C to +50?C |
| Datalogging |
120KB (60,000 readings) programmable (1-60min intervals) |
| Output |
Potential-free contact closure |
| Power |
Internal 12V/12Ah for rechargeable or 8 x 1.5V cells |
| Fluids |
Most fluids with entrained solids or air bubbles |
| Enclosure |
IP67 (watertight up to 10m) |
| Display |
4 x 20 characters LCD |
| Weight |
3.7kg with rechargeable |
| Dimensions |
272?176?249mm L?W?D |
