Arad Octave Installation Manual

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• Certicate of calibration data.
5.0 Unpacking and Inspection
• This product has been thoroughly inspected and tested before shipment and is ready for operation.
• After carefully unpacking the meter, inspect for shipping damage before attempting to install. If any indication of mechanical
damage is found, immediately contact the responsible transportation service and your local ARAD LTD. representative.
6.0 System Description and Measurement Method
• The OCTAVE’s measurement method is based on an ultrasonic, transit-time, dual-beam sensors which determines
the length of time it takes an ultrasonic sound wave to travel the distance between the two sensors located on the
meter’s body. The sensors function as both the sender and the receiver, each one alternating these functions so
that the ultrasonic wave travels both with and against the direction of the ow. Since the ultrasonic wave travels
slower against the ow than with the ow, the time dierence of two waves traveling with and against the ow
leads to determining the velocity of the water.
• The OCTAVE ultrasonic ow meter is a battery-powered precision ow meter designed for linear, bidirectional ow
measurement of water.
• Flow measurement values can be transferred through the standard comminucation - digital or analog output.
• The OCTAVE can be set up for a wide range of applications.
7.0 Notes
• For proper ow measurements, the OCTAVE’s measuring tube should be completely full at all times. Non-wetted
sensors show loss of signal. Though this will not cause damage to the meter, it will, however, not measure ow and
display zero.
• Flow direction: The OCTAVE is a bidirectional ow meter. Note the indicating arrow on the OCTAVE’s display for
forward and backward ows.
• In case of direct sunlight exposure, it is recommended to keep the lid closed, though no direct damage will occur
with the lid open.
• Do not expose the OCTAVE to excessive vibration. To avoid vibration, support the pipeline on both side of the
meter
• Ambient working temperature: -25 to +55°C.
• Water working temperature: 0.1 to +50°C.
• To avoid measuring errors due to air in the ow tube, observe the following precautions:
• Since air collects at the highest point of the system, installation of the owmeter should be at the lowest point.
• Always install control valves downstream of the meter in order to avoid cavitation.
• Never install the meter on a pump suction side in order to avoid cavitation.
8.0 Counter Flanges
• Refer to the standard dimensional drawings for ange spacing, accommodating for the thickness of gaskets.
• Install meter in line with the pipe axis. The ange faces must be parallel to each other.
• Permissible length deviation: Lmax - Lmin 0.5mm (0.02”).
9.0 Start-up
D Check that the meter has been installed correctly.
D Check that the ow rate and volume units are correctly preprogrammed on the display.
D Check that the output module is correctly attached.
10.0 Digital Display
Flow direction
Volume units
Communication mode
System error
Accumulator mode
Output mode
Pulse resolutionLow battery alert
Flow rate units
Water temperature

Arad Octave Specifications

General

Protection Class	IP68
Type	Ultrasonic flow meter
Communication	M-Bus
Pressure Rating	16 bar
Power Source	Internal battery