Rural water supply and water demand ... - Up To - SOPAC

Pulse generators.
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These are units attached to the register of a mechanical meter to provide a pulse output, in
effect creating an electromechanical meter. Kent Meters supply the LRP (10 pulses/rev) and
HRP (100 pulses/rev) units which are attached to the range of their helix meters. They are solid
state units which have replaced the Kent PU10 and PU100. Wessex Electronics also supply a
solid state unit, the "Metermate", which will interface with any of the Kent helix meter range and
any data logger.
Pulse counters/low cost data loggers
These units are usually low cost single or dual channel data loggers used to record pulse
output signals. Their main use is as a temporary installation data logger to record night flows
over several nights as an indicator of leakage prior to a full data logging exercise. They are also
suitable for household and non-household demand logging. Some loggers can be mounted
directly onto helix meters, eliminating the need for a pulse generator.
An outline specification for this type of logger is as follows;
• logging interval from 6 seconds to 60 minutes
• 120 days memory at 15 minute intervals
• submersible to IP68
• temperature -10 deg C to + 60 deg C
• digital input to support;
• pressure input facility to support;
• RS232 interface
range of mechanical helix meters
electromechanical insertion probes
EM insertion probes
contact closure pulse units
electronic pulse units used with a range of mechanical
meters
0-25 bar for distribution monitoring sensors
0-350 millibar for reservoir depth sensors
range of electrical inputs
[MR351 - Schölzel]