CDI MONITORING

Data Logging | Wired Networking | Wireless Networking | Software

Four distinct approaches can be taken to recording and monitoring the outputs of CDI flowmeters. They range from simple, limited-time data logging through connecting the standard milliamp or pulse outputs to PLCs, to wired or wireless serial outputs, both of which can be monitored by our free MeterGrapher software or by other software that uses the Modbus protocol.

Data Logging

The meter’s milliamp output is recorded for a period of time with a battery-powered data logger and the logger is then taken to a computer for download and plotting of the data using software provided by the manufacturer of the logger. While this approach is simple and inexpensive, it does not provide real-time monitoring of performance.

Wired Monitoring of Milliamp or Pulse Output

The meter’s milliamp or pulse output is wired to a PLC, providing a simple, direct input to an existing data-collection system. No added hardware is needed for use of the milliamp output, and the output can be electrically isolated from the meter by removing an installed jumper. For use of the pulse output, the isolated pulse output simplifies wiring to PLC inputs and prevents possible damage caused by miswiring.

Wired Networking

Optional serial-output display circuit boards are wired one to the next and back to an interface that is connected to the facility’s Ethernet or to a USB port on a personal computer. Data is transmitted according to the Modbus RTU protocol over an RS485 network. Where many meters are involved, wiring is greatly reduced as compared with wiring the milliamp output of each meter to a PLC.

  • Serial Communication Display Board
    A substitute display circuit board providing serial communications by Modbus RTU over an RS-485 network
  • Ulinx USOPTL4 USB
    An isolated USB to RS-485 converter, connects the network to a USB port on a personal computer
  • Grid Connect RS-485/Ethernet Interface
    The NET485-MB adapter connects an RS485 Modbus network to an Ethernet TCP/IP network
  • MeterGrapher Software
    Software to monitor, display, alarm and archive data from systems of as many as 250 flowmeters on multiple adapters. Also can log other parameters, such as electrical load and pressure

Wireless Networking

Optional wireless-output display circuit boards, each containing a radio module, form a ZigBee® mesh network with an Ethernet-connected gateway. This approach provides the continuous data availability of wired monitoring systems without the need for wiring.

  • Wireless Output Display Board
    A substitute display circuit board including a radio module to transmit data over a ZigBee mesh network
  • Wireless to Ethernet Gateway
    Connects a network radio module to an Ethernet network
  • MeterGrapher Software
    Described above, treats wireless gateways as it does wired adapters; systems can include both. Meters can be monitored from the user’s desktop minutes after they are installed. This software is available for download at no charge.

CES [Compressor Energy Services] uses flow meters on every project because they provide a direct measurement of what the compressor is supplying. The Department of Energy states that 50 percent of compressed air goes to nonproductive uses. But, by actually measuring air flow, CES has found the figure is closer to two-thirds of compressed air produced is nonproductive.

Jeff Wright, President of Compressor Energy Services (CES), LLC

CES [Compressor Energy Services] uses flow meters on every project because they provide a direct measurement of what the compressor is supplying. The Department of Energy states that 50 percent of compressed air goes to nonproductive uses. But, by actually measuring air flow, CES has found the figure is closer to two-thirds of compressed air produced is nonproductive.

Jeff Wright, President of Compressor Energy Services (CES), LLC

I wanted to personally thank you for the development and launch of such a fantastic product. These meters have provided a simple and accurate means to accurately monitor and track compressed air usage in pre-existing systems. These meters have been the key to really understanding where the air is being used across our campus as well as size new equipment to properly serve the loads.

John KelliherSenior Plant Engineer, Biogen Idec Inc.

We have purchased over fifty CDI flow meters & KW meters. They are very easy and convenient to use. We strategically install them in the plants and data log the information from them. Measuring air flow is the primary piece of data we are looking for. We are now compiling data and are moving in the direction of establish Best Practices for specific processes in our facilities.

Paul LukitschRegional Facilities & Energy Manager, Millipore Corporation

...the facility opted to install CDI flow meters downstream of each of the flow controllers in order to monitor their real compressed air usage in SCFM daily and weekly, allowing them to understand and control their current, variable, and future compressed air needs.

Patricia BoydEcos Air
27000
Flowmeters Sold
56
Countries
20
Average Savings
365
Days Non-Stop Operation
80
More Efficient
1
Call Is All It Takes