Impact of changing the field device contract hour

When a meter's contract hour is changed, it can affect the associated station balance around the day of the contract hour modification. Changing the contract hour can have an impact on the value of the station balance. The example below aims to explain what happens when a meter's contract hour is changed mid-day. Consider the following scenario:

• Global Contract Hour is set to 12:00 A.M.

• Meter Contract Hour was changed from 12:00 A.M. to 09:00 A.M. on 2013-02-28.

After the contract hour change, the following meter data exists:

• meterName: METER1

  dateTime: 2013-02-28 00:00:00:0000

  contractTime: 2013-02-28 00:00:00.000

  volume: 5000

• meterName: METER1

  dateTime: 2013-02-28 09:00:00:000

  contractTime: 2013-02-28 09:00:00.000

  volume: 2000

• meterName: METER1

  dateTime: 2013-03-01 09:00:00.000

  contractTime: 2013-03-01 09:00:00.000

  volume:4500

The station balance data is calculated in the following manner:

• stationName: STATION1

  dateTime: 2013-02-28 00:00:00.000

  volume: 7000

• stationName: STATION1

  dateTime: 2013-03-01 00:00:00.000

  volume: 4500