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LDB-ST1LE Batcher
5.2 General Operation
The unit can display: Rate, Total, Grand Total, Presets and Time of Day. The unit can be programmed to
perform Ratemeter/Totalizer or Batching functions.
5.3 Ratemeter/Totalizer Operation
The Ratemeter/Totalizer mode is used primarily to monitor flowrate and accumulated total. The relays can be
used to trigger on flow rate, total, or alarms.
5.3.1 Password Protection for Rate/Total mode
After an Operator and/or Supervisor Password is entered in the setup mode (see section 6.3, SETUP
PASSWORD submenu), the unit will be locked. The unit will prompt the user for the password when trying
to perform the following functions:
Clear Total
Clear Grand Total
Enter Menu
Edit Preset 1 (PRE 1 Key)
Edit Preset 2 (PRE 2 Key)
Edit Preset 3 (4 Key)
Edit Preset 4 (9 Key)
The Supervisor password should be reserved for supervisors. The Supervisor password will allow access to
restricted areas of the Setup and Test menus.
5.3.2 Relay Operation in Rate/Total mode
Up to four relays are available (two standard) for alarm outputs. The relays can be assigned to trip according
to rate, total or general system alarms. The relays can be programmed for low or high alarms.
Preset 1 (RLY1) and Preset 2 (RLY2) are easily accessible by pressing the PRE 1 or PRE 2 key on the front
panel. Preset 3 and Preset 4 are accessible by pressing the 4 or 9 keys.
5.3.3 Pulse Output in Rate/Total mode
The isolated pulse output (open collector) is assigned to Volume Total. The pulse output duration can be set
for 10mS (50 Hz max) or 100mS (5 Hz max). A pulse output scale factor (pulse value) can be set to scale
the pulse output. The pulse output is ideal for connecting to remote totalizers or other devices such as a PLC.
See section 1.3 for electrical specifications.
5.3.4 Analog Output in Rate/Total mode
The analog output is menu assignable to correspond to the Volume Rate or Volume Total. The analog
output is ideal for "trend" tracking using strip chart recorders or other devices.
