Questions come up regarding the ADM2000 and its RS232 output. The cable supplied with the ADM2000 consists of DB25 connector at one end, a three conductor mini plug, and a connector for an external power supply.
When the data cable is in use, the external power supply must be connected as the mini plug (which supply’s the serial data from the ADM Flowmeter) disconnects the internal battery and the meter relies on external power. In most cases the DB25 connector is connected to a DB25 to DB9 adaptor or adaptor cable to connect to most computers in use today.
The simplest way to check for connectivity between the meter and the computer is to use Microsoft’s Hyperterminal located in the Windows Accessories tab in the Start Menu and then choose the Communications tab. In this menu you will see the Hyperterminal tab. Once the application is started it asks for a connection name, this can be any random name, and the next required choice is to choose a port, usually COM1.
Once connectivity is established you will see the numerical reading from the meter being displayed on the computer. The data stream is in an ASCII format and each entry is delimited by the carriage return character (CR).
At this point one could write a software routine to collect the data, which can be written in a variety of software languages. All one needs to know is the port to read from and that the data delimiter is (CR).
For questions on ADM2000 data communication, annual calibration, repairs, and other inquires on meter operation, you may contact California Integration Coordinators, Inc. at www.cic-inc.com or call 530-626-6168 and ask for the Calibration Lab or Flow Meter Engineering.
Wednesday, June 23, 2010
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