Compaq MTEK6000 user manual Cubic Unit/Pulse In or Meter Drive, Date Month, Day, Year

MTEK6000 SERIES USER'S MANUAL

Cubic Unit/Pulse In or Meter Drive

This parameter determines the volume unit represented by one input pulse, and is normally set to equal the drive (CF/Rev) of the meter. Standard indexes produce one pulse per revolution; therefore, the CF/Pulse will equal the drive rate of the meter. The Default value is 100.

For instruments utilizing remote pulsing devices, this value can also be determined by dividing the CF/Rev of the meter by the number of pulses per revolution generated by the remote pulser.

For example: Consider a 3GT meter with a 100 CF/Rev drive and a 50 Pulse/Rev Imac Pulsamatic Transmitter. The CF/Pulse is determined as follows:

CF/Pulse = 100 CF/Rev * 1 Rev/50 Pulses = 2 CF/Pulse

NOTE FOR METERS WITH 5 CF/REV DRIVE RATES:

Re-position the input compound gear to the correct position, and set this parameter to a value of 10. Refer to Section Two or contact Metretek, Inc. for assistance in positioning the compound gear.

Current Day High Volume Alarm Reset After the Current Day's Total is exceeded, the setpoint at which the unit exits this condition is entered in this location. The Default value is 99,990.

Current Day High Volume Alarm Setpoint

This parameter specifies the setpoint at which the unit determines whether the Current Day Flow Total is in an alarm condition. For transport or interruptible customers, this parameter can be used to alarm when an account has exceeded a predetermined daily volume allocation. The Default value is 100,000.

January 2002

Date (Month, Day, Year)

This is the current Date in the unit (MMDDYY). It is updated on each process scan.

Flow Rate Update Interval (s)

This parameter determines how often the flow rate gets updated in the EFC. However, it has no control over Volume updates. Volume is updated every time the unit wakes up from the sleep mode or every 3-4 seconds if the unit is always awake.

The Flow Rate Update Interval parameter is of the form XXX.YY.M where the integer portion (XXX) is the time interval in seconds between Flow Rate updates. The digits after the decimal point (YY.M) represent the zero- flow period (i.e. the amount of time to wait without receiving pulses before generating a zero flow rate). The first two digits are minutes and the third digit (T) is a fraction of

aminute. Thus, a two-minute zero-flow period would be entered as XXX.020, a ten minute period as XXX.10. The maximum allowed period is 27 minutes and the default is one minute (XXX.010).

The user MUST specify a zero-flow period, which is larger than or equal to the Flow Rate Update Interval. Specifying a zero-flow period smaller than the Flow Rate Update Interval will result in a zero-flow rate being displayed even when there is an apparent flow. For example: A value of 600.11 would update flow rate every 10 minutes and display zero flow if 11 minutes passed without an input pulse. A value of 600.01 will not work properly. It would try to update flow rate every 10 minutes, but would zero the flow rate every minute, even if pulses come in faster than one per minute.

C - 3