HYDROLOGICAL SERVICES PTY LTD
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HYDROLOGICAL SERVICES
HS-55 GAS PURGE COMPRESSOR
I
GENERAL
The HS-55 has been designed to replace conventional nitrogen gas bottle supply bubble
units/gas purge systems for water level measurement.
The design of the unit centres around the tried and proven Hydrological Services’ Model HS23
Dry Bubble Unit with Differential Regulator (BU07). The HS-55 incorporates a maintenance
free Air Drying System that utilises a “Self Purging” Membrane Filter Dryer and Auto Drain
Moisture Traps to ensure a moisture free system. The effectiveness of the HS-55 Filter Dryer
is such that the unit also removes up to 20% of oxygen from the air it dries, thus helping to
reduce aquatic growth at the river end. The unit is maintenance free for up to 5 years.
GAS PURGE COMPRESSOR- MODEL HS-55
The HS-55 incorporates a 3-Way switching valve for manual purging of the system.
Continuous purging occurs when the valve is rotated to
“Purge”
position. This is similar to
Dry Bubble Unit (Model HS23) functions. For instructions how to use the valve please refer to
(page 18) of this manual.
Auto Drain” Moisture Trap
The system features an
Auto Drain Moisture Traps.
When the traps sense moisture build up,
a relief valve is opened and the moisture is purged under pressure to atmosphere.
Voltage Regulator Protection
If the pressure lines or fittings on the HS-55 develop a leak that cause the loss of air pressure in
the system, the air compressor could run continuously as it attempts to fill the air receiver. If
this occurs, the system voltage could fall below 12 Volts. At 11V the voltage regulator
switches off the power to the motor until the battery is recharged to 12V at which time the
system will commence normal operation. This feature protects the compressor pump and
motor from damage.
Gas Purge Compressor
Issue 7:
16/12/03
© Copyright
HS55 100-03
