Octave Installation Guide
Octave Installation
Guide
Category: C & I Metering
Type: Installation Manual
Issue: Operation
Octave Installation Manual
1
General Information
1.
2.
3.
4.
2
Measurement Method
Mechanical Data
Dimensions and Scaled Drawings
Pipe Flanges
3
3
3
3
4
4
5
5
Installation Requirements
1.
2.
3.
4.
5.
4
Page
Technical Data
1.
2.
3.
4.
3
Introduction
Package Contents
General Safety
Unpacking Instructions
Table of Contents
Start-up
Handling the Octave
Installation Instructions
Installation Location & Position
Additional Installation Requirements
6
6
6
7
8
Register Display and Output
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Digital Display
Display Resolution
Volume Display Options
Optional Data Output
Pulse Output (Digital)
4-20 mA (Analog)
Encoder Output (Serial)
No Output (Manual read)
Installation of Output Module
Wire Connectivity Chart
9
10
10
11
11
12
13
13
14
15
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Octave Installation Manual
1.1
Chapter 1 – General Information
Introduction
Thank you for choosing Master Meter’s Octave Ultrasonic Meter. This unique design delivers precise flow
measurement without any moving parts for long life, sustained accuracy and exceptional performance. The
following information within this guide will help you gain a better understanding of the many features and
capabilities your new Octave Ultrasonic meter has to offer.
1.2
Package Contents and Documentation
• One complete Octave Ultrasonic Flow Meter (meter body with integral electronics), size as indicated on the
packaging box.
• Condensed Octave User Installation Guide.
• Certificate of calibration data
• (Optional) If specified at the time of order; one output module for either encoder, pulse or 4-20 mA
communication will come factory attached the Octave.
1.3
General Safety
Prior to installation of your new Octave Ultrasonic Meter please consider the following;
• Do not install, operate or maintain this flow meter without reading, understanding and following the
factory-supplied instructions. Otherwise, injury or damage may result.
• Read instructions carefully before beginning installation and save them for future reference.
• Observe all warnings and instructions marked on the product.
• Consider handling and lifting instructions to avoid damage.
• If the product does not operate normally, refer to the service instructions or to a qualified Master Meter
representative.
• There are no operator-serviceable parts inside this product.
1.4
Unpacking Instructions and Inspection
This product has been thoroughly inspected and tested prior to shipment and is ready for operation. After
carefully unpacking the meter, inspect all contents for shipping damage before attempting to install. If here is
any indication of physical damage found, immediately contact the responsible transportation service and your
local Master Meter representative. Note: The LCD display remains active for the life of the meter. If the
display is not on, this may be an indication of damage during shipment.

Octave Installation Manual
2.1
Chapter 2 – Technical Data
Measurement Method
The Octave’s measurement method is based on an ultrasonic, transit time, dual-beam sensor which
determines the length of time it takes an ultrasonic sound wave to travel the distance between the two sensors
located in the meter’s body. The two sensors function as both the transmitter and the receiver, each one
alternating these functions so that the ultrasonic wave travels both with and against the direction of the flow.
Ultrasonic waves travel slower against the flow than with the flow, thus the time difference of two waves
traveling with and against the flow leads to determining the velocity and volume of the water.
Note: These sensors are ultra-sensitive; they are not designed to be modified by the user. Any
modifications void warranty on this product.
• The Octave ultrasonic flow meter is a battery-powered, precision flow meter designed for linear,
bidirectional flow measurement of water.
• Flow measurement data is communicated through standard digital pulse or analog output.
• The Octave can be set up for a wide range of applications.
2.2
Mechanical Data
Maximum Working Pressure
175 PSI
Liquid Temperature
32° F - 122° F (0° C to 50° C)
Referenced Standards
Meets AWWA Standard C-750-10, ISO 4064 rev. 2005
Configuration
Compact - Display built into unit
Power Source
2 x D size Lithium Thionyl Chloride batteries - 10 year warranted life time
Environmental Protection
NEMA 6P+ (IP68+), Ambient operation temperature -13° F to 131° F (25° C to 55° C) for the display
Data Units
Multi-line 9 digit Liquid Crystal Display (LCD) - Programmable USG,
Cubic Feet, M3, or Acre Feet for Volume with GPM or metric flow rate
choices.
Volume Display Options
1.
2.
3.
Flanges
ANSI / AWWA C702

2” Oval Type

3” – 12” Round Type
Meter Body Construction
Epoxy coated Ductile Iron or Grade 316 Stainless Steel
Output (optional)
1.
2.
3.
Net Volume (Forward measurement minus reverse)
Forward Only
Alternating Flow (Forward and Reverse flow displayed separately)
Dual Digital Pulses (Open Collector or Dry Contact)
4-20 mA (Powered loop)
Encoder Output

Octave Installation Manual
2.3
Chapter 2 – Technical Data
Dimensions
Model
Octave
2" SS
2" DI
3"
4"
6"
8"
10"
12"
(50 mm)
(50 mm)
(80 mm)
(100 mm)
(150 mm)
(200 mm)
(250 mm)
(300 mm)
10"
17"
12"
14"
18"
20"
18"
20"
(250 mm)
(432 mm)
(305 mm)
(356 mm)
(457 mm)
(508 mm)
(457 mm)
(508 mm)
5 3/4"
5 3/4"
7 1/2"
9"
11"
13 1/2"
16"
19 1/4"
(146 mm)
(146 mm)
(190 mm)
(229 mm)
(280 mm)
(343 mm)
(406 mm)
(489 mm)
6 3/4"
6 3/4"
8 1/2"
9 7/8"
10 7/8"
12 7/8"
15"
18"
(172 mm)
(172 mm)
(216 mm)
(250 mm)
(276 mm)
(327 mm)
(383 mm)
(456 mm)
2 1/8"
2 1/8"
3 1/2"
4 1/2"
5 1/8"
6 3/8"
8"
9 5/8"
(54 mm)
(54 mm)
(90 mm)
(115 mm)
(130 mm)
(162 mm)
(203 mm)
(245 mm)
24 lbs.
36 lbs.
48.5 lbs.
76 lbs.
108 lbs.
150 lbs.
210 lbs.
(11 kg)
(16 kg)
(22 kg)
(34 kg)
(49 kg)
(68 kg)
(96 kg)
28 lbs
40 lbs.
62 lbs.
88 lbs.
N/A
N/A
(13 kg)
(18 kg)
(28 kg)
(40 kg)
Nominal Size
L - Length
B - Width
H - Height
h - Height
Weight Ductile Iron
Weight Stainless Steel
2.4
N/A
15 lbs
N/A
(7 kg)
Pipe Flanges
Refer to dimensional chart for flange spacing and allow for thickness of gaskets. Install flow meter in line with
pipe center line. Pipe flange faces must be parallel to each other. Permissible lay length variation: Lmax - Lmin ≤
0.02” (0.5 mm).

Octave Installation Manual
3.1
Chapter 3 – Installation Requirements
Pre-Installation
Prior to installation check the following:
• Flow rate and volume units are correctly programmed.
• The flow meter is correctly installed per the installation location and position recommendations.
• Output modules are correctly attached.
3.2
Handling of Octave
IMPORTANT:
• DO NOT use chains or wire cable to lift the Octave. To protect the epoxy coating, only
use a nylon lifting strap with appropriate weight capacity.
• DO NOT lift the Octave by the electronic housing unit.
• DO NOT carry the Octave by its lid.
• DO NOT use bolt holes for grip when carrying the Octave.
• DO NOT position the flow meter on its electronic housing unit.
• When bolting the meter to pipe flanges, use washers on both nuts and bolts to
protect the epoxy coating of the Octave.
• When handling the flow meter avoid hard blows, jolts or impact.
3.3
Installation Notes
The measuring tube should be completely full at all times for proper flow measurements. When sensors are not
wet this will show a loss of signal. However, there is no damage when this occurs and the meter will not
measure.
FLOW DIRECTION: The Octave is a bi-directional flow meter. Note the indicating arrow for forward and
backward flows.
Master Meter recommends keeping the lid closed in case of direct sunlight exposure. However, no direct
damage will occur while the lid is open temporarily.
Do not expose the meter to excessive vibration. To prevent this from occurring, support the connection pipe
spools on both ends of the flow meter.
To avoid measuring errors and malfunctioning of the flow meter due to air or an empty pipe, please observe the
following precautions:
• Installation of the flow meter should be at the lowest point of the system, if possible, since air will be
collected at the highest point of a system.
• If possible, maintain positive back pressure in meter outlet piping.
• In order to avoid cavitation, always install control valves downstream of the flow meter and never install the
flow meter on a pump suction side.
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Octave Installation Manual
3.4
Chapter 3 – Installation Requirements
Installation Location & Position
Proper Installation
Improper Installation
Conditional Installation
Proper Installation: If this is not the highest point in the system or a
hydraulic jump has been installed to keep the flow meter full. The
system has back pressured.
Improper Installation: If this is the highest point in a system or if
pipeline and/or flow meter is subject to being emptied between uses
avoid this installation.

Octave Installation Manual
3.5
Chapter 3 – Installation Requirements
Additional installation requirements
Zero (0) pipe diameters permitted before & after elbows (90°)
Minimum of five (5) pipe diameters after pump discharge.
Minimum of two (2) pipe diameters before or after strainers.
Minimum of two (2) pipe diameters before or after isolation valves
Open bore valves, such as resilient wedge gate valves can be
bolted directly to the meter.
Minimum of two (2) pipe diameters before tee connections.
Zero (0) pipe diameters before and after elbows (90°) in
vertical installations
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Octave Installation Manual
4.1
Chapter 4 – Register & Output Mode
Digital Display
The Octave meter comes with a factory programmable digital display built to your specifications. At the time
of order you can select:





Volume units in gallons, cubic feet, cubic meters or acre feet
Rate of flow measurement in gallons per minute, liters per second or cubic meters per hour
A programmable decimal point up five digits to the right of the first gallon, cubic foot, cubic meter
or acre foot
One output mode in either encoder (UI1203), digital pulse, 4-20 mA, or no output mode
Volume Display Option in either Net Flow, Forward Only, or Alternating. This option was made
available in Octave software version 3.15 and higher. Previous versions offered Net Flow only.
This box varies depending on the Communication
Output Mode you select. See Section 4.3 for a
description of what each icon represents.
Volume Units
Flow Direction
Flow Rate Units
Battery Level
Leak Detector
3G / GSM Active
Communication
Alarm /
Measurement Error
Output Mode
Net Flow Indicator
Forward Flow
Indicator
Alternating Flow
Indicator
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Octave Installation Manual
4.2
Chapter 4 – Register & Output Mode
Display Resolution
The Octave meter comes with 9 digit resolution; leading zeros will not be displayed. At the time of purchase
th
you can select one of the following 6 (six) options for display resolution; measuring as low as 1/100,000 of a
volume unit.
1) Default Display - (lowest resolution = 1 unit)
3
3
The circled value equals 1 GAL, ft , m or AF
3) Optional Display - (lowest resolution = 0.01 unit)
unit)
3
3
The circled value equals 1 GAL, ft , m or AF
2) Optional Display - (lowest resolution = 0.1 unit)
3
3
The circled value equals 1 GAL, ft , m or AF
4) Optional Display - (lowest resolution = 0.001
3
3
The circled value equals 1 GAL, ft , m or AF
5) Optional Display - (lowest resolution = 0.0001 unit) 6) Optional Display - (lowest resolution = 0.00001
unit)
3
3
The circled value equals 1 GAL, ft , m or AF
3
3
The circled value equals 1 GAL, ft , m or AF

Octave Installation Manual
4.3
Chapter 4 – Register & Output Mode
Volume Display Options
Software Version 3.15 and higher Octaves now offer the ability to choose how volume is measured. If one of
the following icons is not displayed in the box on the bottom right of the display, the Octave software version
is prior to software release 3.15 and flow measurement is in Net Volume.
4.4
i.
Net Volume (Master Meter Default) – The meter measures both forward and reverse flow. If
backward flow is detected, the totalizer will begin to decrease. If the total is below zero, you
will see a minus (-) symbol on the totalizer.
ii.
Forward Flow Only – The meter measures forward flow only. Reverse flow is disregarded.
iii.
Alternating Flow – The totalizer will display only forward flow, then toggle to display only
reverse flow. The timing of the how long each measurement is displayed is programmable
with this software version.
Communication Output Modes
All Octave flow meters are available with one of the optional data output array listed below. This section
describes the visual representation on the register display to determine the communication output mode of
the flow meter.
i.
Pulse Output (See Section 4.5) – When the Octave is in Pulse output, this icon will always
be illuminated.
ii.
4-20 mA Output (See Section 4.6) – When the Octave is in 4-20 mA output, this icon will
always be illuminated.
iii.
Encoder Output (See Section 4.7) – When the Octave is in encoder output, the wavelength
icon will flash on and off approximately every second.
iv.
No Output (See Section 4.8) – When the Octave is not sending a communication signal,
this box will be empty.

Octave Installation Manual
4.5
Chapter 4 – Register & Output Mode
Pulse Output (Digital Communication)
Pulse Type: Open Collector that allows current loading of 200 mA, and up to 50 volts.
Pulse Module Wire Colors
Long cable
Short cable
Output Characteristics
Wire Color
Function
Output Type
Open drain
Red
Green
Pulse Out #1
Pulse Out #2
Cable Length - Supplied
4 feet
Maximum Cable Length*
900 feet
Black
Ground
Bare Wire
Ground / Shield
Ring Terminal Ground
Warning: Signal connection polarity is mandatory
Maximum Supply Voltage 50 Vdc
* The maximum cable length depends on: cable
type, controller, and electrical noise level.
Available Pulse Resolutions
Gallons
Cubic Foot
Cubic Meter
Acre Foot
0.1
0.01
0.0001
0.0001
1
10
100
1000
0.1
1
10
100
1000
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
1000
1000

Octave Installation Manual
4.6
Chapter 4 – Register & Output Mode
4-20 mA Output (Analog Communication)
The current output is a passive 4-20 mA. 4 mA is always “0” (zero) flow and the 20 mA is factory
programmable according to the customer’s requirements. (If the customer has not specified the 20 mA at the
time of order, the Octave will be programmed with the 20 mA at the max flow of the meter.)
4-20 Module Wire Colors
Long cable
Short cable
Output Characteristics
Wire Color
Function
Red
Current loop +
Black
Current loop Bare Wire
Ground / Shield
Ring Terminal Ground
Warning: Signal connection polarity is
mandatory
Output Type
4-20 mA passive
current output
Cable Length - Supplied
4 feet
Maximum Cable Length*
900 feet
Loop Supply Voltage
12 - 24 Vdc
Output Impedance
25 (mΩ) typ
* The maximum cable length depends on: cable
type, controller, and electrical noise level.

Octave Installation Manual
4.7
Encoder Output



UI1203 encoder open communication, with a maximum reading of up to 8 digits
Serial communication collector
Data output line is a solid state switch requiring external pull-up
Encoder Module Wire Colors
Wire
Function
Red
Power
Green
Black
Output Characteristics
Output Type
Encoder
Data
Cable Length - Supplied
4 feet
Ground
Maximum Supply Voltage 15 Vdc
Warning: Signal connection polarity is
mandatory
4.8
Chapter 4 – Register & Output Mode
Maximum Power Load
.04 Vdc
No Output (Manual Read)
The Octave meter can be programmed to not send a communication signal at the customer’s request;
however Master Meter recommends selecting a communication mode for future migration to AMR or AMI.

Octave Installation Manual
4.9
Chapter 4 – Register & Output Mode
Output Module Installation (Optional)
All Octave water meters are shipped with either a cover plate or communication module installed on the side
of each meter. Even if the meter is not going to be read by radio or some other electronic unit, it is important
to leave one of these devices installed on the Octave to prevent damage to the communication port.
Installing an Octave without a cover plate or communication module would void any warranty.
If you received an Output Module separate from your Octave meter, please follow the steps below to ensure
proper installation of the module. Read through these instructions before attempting to remove the cover
plate. Your module came as a complete installation kit with the supplies shown in Pic. 1.
Octave Output Module Installation Kit
2 Allen Screws 3mm x
20mm
Octave
Module
O-Ring
Pic. 1
Step 1:
3mm Allen Key
Remove the Sealing Cap from the cover plate (Pic. 2).
Step 2:
Using the 3mm Allen Key provided, remove the cover plate (Pic.
3). Keep the cover plate and 3mm x 15mm screws for future use. The
communication port is now exposed. (Pic. 4)
Step 3:
5 & 6)
Pic. 2
Pic. 3
Pic. 4
Pic. 5
Place O-Ring around the 4-prong plug of the output module. (Pic.
Step 4:
Insert Output Module into the communication port (Pic. 7), with the
cable pointing down. This will allow the slot inside the communication port to
align with the groove on the module. Do not force the module into the
communication port. This may cause damage to the pins. Secure into place
using the 3mm x 20mm screws provided. Tighten until the screws stop. (Pic.
8)
Step 5:
Push the Sealing Cap into the lower screw hole (Pic. 9). Lock the
Sealing Cap in place by firmly pushing in into place or gently tapping it in with
a small hammer.
Pic. 6
Pic. 7
Pic. 8
Pic. 9
Note: If at any time the module needs to be removed, take caution not to
allow dirt or water into the communication port. If the module is going to be
removed for an extended period of time, reinstall the cover plate and the 3mm
x 15mm screws.

Octave Installation Manual
4.10
Chapter 4 – Register & Output Mode
Wire Connectivity Chart
The following chart is designed to assist in wiring the Octave module to various AMR/AMI Radios.
Alternatively, at the time of purchase you may select to have either Nicor Connectors or Itron Connectors
factory attached to the Octave Module.
Manufacturer
Model
Communication
Type
Octave Red Wire
Octave Green Wire
Octave Black Wire
Aclara
Star 3000 Series
Encoder
Red
White
Black
Star 3000 Series
Pulse
Red
N/A
Black or White
Galaxy
Encoder
Red
Green
Black
Orion
Encoder
Red
Green
Black
Badger
Datamatic
Firefly
Encoder
Red
White
Black
Mosaic
Encoder
Red
Green
Black
MTU
Encoder
White
Red
Black
MTU
Pulse
Red
White
Green
Hersey
Hot Rod
Encoder
Red
Green or White
Black
Itron
60w
Encoder
Green
Red
Unshielded
60wp
Pulse
Red
N/A
White
Elster
Kemp Meeks
Master Meter
100w
Encoder
Grey
Brown
Yellow
Visu-Link VL-9
Encoder
Red
Green
Black
Visu-Link VL-9S
Pulse
Universal XTR
Encoder
Red
Green
Black
Fast Pulse XTR
Pulse
Red
N/A
Black
Red
N/A
Black
Green
Black
ReadPad
Metron Farnier
(T2)
Neptune
Sensus
Polarity does not matter - Connect Red and Black Wires to either
terminal, disregard green wire
T2 M2w
Encoder
Red
R900
Encoder
Black
Red
Green
MXU Pit Unit
Encoder
Red
Green
Black
MXU Wall Unit
Encoder
Red
Green
Black
Touch Pad
Encoder
Red
Green
Black
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