hvflo

Pulsonic HVFlo®

Intrinsically Safe Logging Flow Meter

HVFlo
is a high performance battery operated open channel flow monitoring
solution for wastewater, storm water and industrial discharge
applications.

HVFlo features Pulsonic field proven Doppler velocity and
level measurement sensors. Advanced spectrum signal processing
allows HVFlo to produce superior results under a very wide
range of hydraulic operating conditions. Even under full pipe,
surcharge, or reverseflow conditions, HVFlo will produce accurate,
repeatable results every time.

HVFlo offers optional telemetry interface for long-term monitoring
applications. Communication is made possible by using PSTN
or GSM allowing remote diagnostics and data downloads.

Applications Include:

  • Inflow & Infiltration Studies
  • Combined Sewer Overflow Studies
  • Pump Station Monitoring
  • Long & Short Term Sewer Flow Monitoring
  • Sewer System Capacity Analysis
  • Storm Water Monitoring
  • Industrial Monitoring
  • Quantifying Rehabilitation Effectiveness
  • Billing Networks

General

Unit Dimensions (approx)

170mm Outside Diameter x 460 mm high

Sensor Dimensions

Combined depth/Velocity sensor 125mm long x 50mm
wide x 16mm high

Weight (approx)

6kg

Intrinsic Safety

Ex ia IIA T3 IP68 AUS Ex2514X (SIMTARS)

Enclosure Material

Medium density polyethylene (MDPE)

Operating Temperature

-5 to +50 degrees Celsius

Storage Memory

Battery backed NVRAM

Logging Interval

User configurable – 15 seconds to 6 hours

Units of Measure

User definable (in metric units)

Power Source

Rechargeable battery.  Field replaceable, Intrinsically
safe, 6VDC 12Ah Sealed Lead Acid battery pack.

Battery Discharge Cycle

Using Pulsonic combined depth & velocity sensor
150 days typical at 15 minute logging.

Application Software

PC software for system configuration and velocity
profile testing is included in the package.

Factory Backup

HVFlo is backed by a 12 month parts and labour guarantee


Ports

PC Communications port:

A cable from the Pulsonic Communications Barrier plugs
into this port of the HVFlo.  This is sold as a separate
item and forms the interface between the HVFlo

(in the ‘hazardous’ area) and the PC (in the ‘safe’
area).

Primary sensor port:

The Pulsonic combined depth & velocity sensor
plugs in to this port.

Secondary sensor port:

This port is used to input frequency between 0 and
16383Hz (e.g. from a Pulsonic surcharge sensor or 3rd
party depth sensor).  Note: Adding a 3rd
party sensor will void the ‘intrinsic safety’ status.

Auxiliary interface port:

1.  Output a 4-20mA signal when the flow exceeds a
user-configurable limit.  Note: A Pulsonic barrier must
be purchased as a separate item to form the interface
between the HVFlo and the sampler.

2.  Serve as a second serial port.


Velocity
Measurement

Method

Submerged Ultrasonic Doppler

Range

± 0.025 m/sec to ± 4.0 m/sec

(± 8.0 m/sec optional)

Resolution

1mm/sec

Accuracy

± 1% up to 3.0 m/sec

± 1.5% at velocities greater than 3.0m/sec


Depth Measurement

Method

Ceramic pressure transducer with large flat sensing
diaphragm which allows straight, undeflected flow over
the sensing area to reduce drawdown effects at high
stream velocities and providing self cleaning with an
impervious Alumina ceramic surface.  Optional upward
looking ultrasonic sensor can be provided

Full scale range

2 or 4 metres above the transducer face depending
on client needs

Accuracy

0.2% of full scale at constant temperature in a static
stream.  1% of full scale over a stream temperature
range 5 to 55 degrees Celsius

Resolution

1mm

Over-range

60 metres without damage


Product Information
Applications
General
Ports
Velocity
Measurement
Depth
Measurement