The Conzerv DM 5230 Static Watt Hour Meter enable direct energy usage reading, without the
need for an external multiplication factor. The Conzerv DM 5230 also a built-in
potential-free pulse output and can be hooked on to an Energy Management System,
SCADA, PLC, DCS.
Multiplying Factor (MF)
In the case of Direct Reading Meters, Multiplying Factor is the number by which Counter reading must be multiplied to get actual kWh consumed. The MF is indicated by decimal point of the Meter. In the case of 3 Phase 4 Wire Model DM5240, calibrated for 415V/5A, the decimal point printed on the meter is 0.01. Each count on the Counter represents 1/100th of a kWh for direct input of 415V/5A.
When input is through a CT, depending on the CT Ratio an additional MF has to be applied by the user to get actual consumption. For example, for a CT Ratio of 100/5, the consumption is given by (Counter Reading) x 0.01 x 100/5 i.e. (Counter Reading) x 0.2. Thus, for a 500/5 CT, the Counter Reading directly gives the consumption.
What do the POWER & INTEG LEDs on the front panel do?
POWER LED indicates presence of Auxiliary Power which is essential for the meter operation. INTEG LED indicates that integration of Energy is in progress. The LED Blink Rate is either 10 or 8 times that of the Counter update. Hence its resolution is 10 or 8 times that of the Counter and can be conveniently used for meter calibration.
Overflow Hours?
As the Counter accumulates kWh, it will eventually reach 999999 and then overflow to 000000. The duration it takes to overflow is approximately equal to (999999) : average kW which the meter senses.
Pulse Output Option Applications:
Process Integration: Pulse output from DM 52 can be integrated into a process through PLC/DCS for online control of Energy content in process. If the DCS/PLC has a self excited 12V or 24V Digital Input, external 24V DC Supply is not needed. The kWh pulses may also be used to derive average kW information at the PLC
Energy Totalizing: Remote Totalizer can be configured to record Data shift-wise, day wise, etc., while DM 52 records total consumption.
Energy Management System: Several DM 52s can be networked into a cost effective centralised system to centrally monitor energy data and generate a variety of reports covering load-wise, shift-wise, day-wise or batch-wise analysis of energy consumption.
Energy Dispensing: The Presettable Counter is programmed with the amount of Energy to be dispensed. When it counts down to zero, it de-energises the load.
More Information
 See the Conzerv Inc DM5230 CL 1.0 Brochure
| |
