Seametrics jWAVE Instructions Manual

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jWAVE™
Portable Transit Time Ultrasonic
Flow Meter Instructions
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PROUDLY MADE IN THE
USA
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TABLE OF CONTENTS
General Information
General Information ...................................................................................................................................................Page 3
Specications ................................................................................................................................................................Page 3
Meter Features ..............................................................................................................................................................Page 4
App Features .................................................................................................................................................................Page 4
Dimensions ....................................................................................................................................................................Page 5
Technology ..................................................................................................................................................................... Page 5
Do’s and Don’ts ............................................................................................................................................................Page 5
App Installation
Getting Started .............................................................................................................................................................Page 6
Location Setup ..............................................................................................................................................................Page 6
Parameter Setup ..........................................................................................................................................................Page 7
Flow Meter Installation
Straight Pipe Recommendations ...........................................................................................................................Page 8
Full Pipe Recommendations ....................................................................................................................................Page 9
Flow Meter Orientation .............................................................................................................................................Page 9
Transducer Spacing .....................................................................................................................................................Page 10
Power Considerations ................................................................................................................................................Page 10
Installing the Flow Meter ..........................................................................................................................................Page 11
jWAVE INSTRUCTIONS
Operation
Collecting Your Data ...................................................................................................................................................Page 12
Data Logging .................................................................................................................................................................Page 12
Troubleshooting
Problems .........................................................................................................................................................................Page 15
Probable Causes ...........................................................................................................................................................Page 15
Things to Try ..................................................................................................................................................................Page 15
This device complies with Part 15 of FCC Rules and Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received including interference that may cause undesired operation. Contains FCC ID: XDULE40-S2, Contains IC: 8456A-LE4S2. CAN ICES-1/NMB-1; CAN ICES-3 (B)/NMB-3(B)
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Seametrics jWAVE-01
GENERAL INFORMATION
jWAVE INSTRUCTIONS
Meet the Seametrics jWAVE. Capture accurate and
reliable ow readings with your mobile device, with less hassle and in less time—wherever you need a ow or
volume measurement.
No wires. No bulky electronics box to lug around. Your
ultrasonic ow meter hardware installs on the outside of
your pipe in a snap—and senses through the pipe wall. Your mobile device displays readings and helps you set up the hardware.
The jWAVE Flow Meter solution starts with the jWAVE App (downloadable from the app stores) and works on both iOS and Android devices.
The jWAVE Flow meter is a compact, strap-on transit time ultrasonic transducer device. The jWAVE operates by alternately transmitting and receiving a burst of sound energy between two transducers. It then wirelessly
transmits ow measurements to your mobile device. Use
Specications*
the portable data logger to conveniently record ow for
as long as 14 days or as little as one minute.
The jWAVE is highly portable. Just bring the rechargeable clamp-on meter in its lightweight, weatherproof case, along with a tablet or smartphone (iOS or Android). Bluetooth connectivity replaces wires, and the jWAVE App guides you through setup.
The convenient cam cleats let you mount the ow
meter on any pipe in seconds—no cumbersome clamps required.
Bi-directional readings are transmitted to your mobile device for display and your location’s settings are stored in the jWAVE App, ready for reuse.
When you are done, simply release the cleats, then take the compact meter on to your next location.
Pipe Size 2” to 20”
Pressure Drop Zero
Materials Body Anodized aluminum channel, acetal end housings and feet
Mounting Straps EPDM
Temperature Ambient & Fluid -20˚ to 150˚ F (-29˚ to 65˚ C)
Display English and metric units provided on app
Flow Operation Range
Turndown 200:1
Accuracy 1% to 2% of reading (typical)
Repeatability 0.5%
Output Signal Wireless Bluetooth 4.0 (BLE) connectivity to iOS¹ or Android² device
Power Rechargeable battery (up to 12 hours), 1W max, 150mA max current, 5 “AA” NiMH 6V pack with
Power Adapter For recharging battery - must use the 12W USB power adapter supplied with the jWAVE
Installation 10 pipe diameters upstream, 5 diameters downstream for optimal performance (typical)
Environmental IP65
*Specications subject to change • Please consult our website for current data (www.seametrics.com). ¹The following iOS devices support Bluetooth 4.0 (BLE): iPhone 4S and later, iPad 3rd generation and later, iPad mini, iPad Air, and iPod Touch 5th generation. ²If you have an Android device, check the settings on the device or specications for the device to be sure it supports Bluetooth 4.0 (BLE).
Bidirectional; 0.1 ft/s to 20 ft/s (0.03 m/s to 6 m/s)
thermistor, 5 month shelf life
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GENERAL INFORMATION
Meter Features
jWAVE INSTRUCTIONS
Bi-directional Flow Sensing
Power Button
App Features
USB External Power Plug & Battery Charger
Anodized
Aluminum Channel
Integrated Ruler
Moveable Acoustic Transducers
Cam Cleat for Mounting Strap
Rugged Acetal End Housing & Foot
Interactive smart phone/tablet control
app—iOS or Android
Handy built-in pipe
specications—or add your
own
Save location information
Drag and drop output
selection
English or metric units
Select liner and liquid
types—or dene your own.
Easy-to-use data logging
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GENERAL INFORMATION
Dimensions
jWAVE INSTRUCTIONS
28.4” (72.1cm)
2.4” (6.1cm)
28.4” (72.1cm)
3.8”
(9.65cm)
23.5” (59.7cm)
2.4”
(6.1cm)
Technology
The transit time ow meter operates by alternately transmitting and
receiving a burst of sound energy between the two transducers.
The burst is rst transmitted in the direction of uid ow and then against uid ow.
Since sound energy in a moving liquid is carried faster when it travels
in the direction of uid ow (downstream) than it does when it travels against uid ow (upstream), a differential
in the travel times will occur. The sound’s travel time is accurately measured in both directions and then used to
compute the ow rate.
Sound waves can bounce in many directions as they travel through various materials. The more the sound waves scatter, the fewer actually reach the second transducer. The jWAVE uses sophisticated methods to maximize
transducer efciency, thus allowing the unit to run on very low power. Focusing of the sound wave is also
important to ensure it reaches the second transducer without degrading. This is accomplished by accurately spacing the transducers to allow for optimum sound transit between transducers. The jWAVE app computes this spacing based on the pipe size, pipe material, and type of liquid.
Transit time technology works best in clean or mildly dirty water or uids with minimal turbulence or ow
distortion.
Do’s and Don’ts
Do charge your jWAVE at least once a month.
Do store your jWAVE in a dry, inside area when
not in use.
Do store your jWAVE fully charged.
Do keep your jWAVE in its protective case when
transporting to prevent damage.
Do gently clean the transducer pads regularly
with isopropyl alcohol to prevent hardening and build up of used coupling gel.
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Don’t charge with any charger other than the
12W charger supplied. Other chargers may damage the jWAVE.
Don’t store, transport, or use your jWAVE where
the device may exceed 150˚F (65˚C)—
battery may leak or explode!
Don’t bang or drop the jWAVE on hard objects or
surfaces.
Don’t nick the transducer pads.
jWAVE INSTRUCTIONS
APP INSTALLATION
Getting Started
Begin by downloading the Seametrics jWAVE App to your iPhone™, Android phone, or other Bluetooth enabled mobile device from the Apple Store™ or Google Play™. (Note: On an iPad, you must select iPhone Only in the app
store.) If you do not have automatic updates enabled on your device, be sure to update your app when notied that
there is a new version available.
jWAVE
NOTE: Be sure your mobile device supports Bluetooth 4.0 (BLE).
The following iOS devices support Bluetooth 4.0: iPhone 4S and later, iPad 3rd generation and later, iPad mini, iPad Air, and iPod Touch 5th generation.
If you have an Android device, check the settings on the device or specications for the device.
Location Setup
Launching the app lands you on the locations screen. The app always begins with this screen at launch, making it easy to access previously saved location settings.
Begin by tapping on the add location (+) button.
jWAVE for Agriculture
Add location
Give your location a name and then set the specic
parameters for that location. Each location’s settings are stored in the jWAVE App, ready for reuse.
Name your location
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jWAVE INSTRUCTIONS
APP INSTALLATION
Parameter Setup
Use the handy parameter selection screens to set your units of measure and display preferences.
Conveniently select pipe, liner, and liquid specications from lists of pre-loaded values. Don’t see the
right option? Add your custom values!
Units
Toggle between English and metric units of measure.
Select Flow Rate,
Volume, and Velocity from our
pre-loaded values.
Display
The main screen displays two outputs. Drag and drop the two outputs that you rely on most to display on the main screen.
Pipe
Select Pipe Type, Size, and Wall
Classications from our pre-loaded values or add custom values by selecting Custom under Pipe Type. When entering a custom type, you must supply the outer diameter, wall thickness, speed of sound through the pipe material, and the surface roughness
enter zero if unknown roughness.
Liner
Switch between liner and no liner. When selecting Liner
Enabled, enter Liner Thickness and choose Liner Material from our
pre-loaded list or add custom values. When adding a custom material, you must enter the speed of sound through that material.
Liquid
Select Liquid Type and Temperature from our pre-loaded list of values or add a custom liquid type. When adding a custom liquid, you will need to enter the speed of sound through that liquid, the viscosity, and the density.
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FLOW METER INSTALLATION
Straight Pipe Recommendations (X = diameter)
Reduced Pipe
Two Elbows In Plane
20X
jWAVE INSTRUCTIONS
5X15X
5X
Two Elbows, Out Of Plane
Expanded Pipe
Swirling Flow: Propeller Meter
40X
30X
40X
5X
5X15X
5X
5X
Swirling Flow: Partially Open
Buttery Valve
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FLOW METER INSTALLATION
Full Pipe Recommendations
jWAVE INSTRUCTIONS
Recommended:
Keep pipe full at meter for accuracy
Recommended:
Keeps pipe full at meter for accuracy
Not Ideal:
Allows air pockets to form at meter
Not Ideal:
Post-valve cavitation can create air pocket
Recommended:
Allows air to bleed off
Flow meter Orientation
Horizontal (3 o’clock or 9 o’clock position) is the preferred installation orientation, since it avoids problems with trapped air and sediment.
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Not Ideal:
Air can be trapped
Fair — Unacceptable if pipe
contains air
Air bubbles
Best Position
Sediment
Fair — Unacceptable if pipe
contains sediment
FLOW METER INSTALLATION
Transducer Spacing
Once you entered your parameters in the previous section, the app automatically computed the proper transducer spacing. This is shown at the bottom of the main app screen.
The next step is to adjust the transducer spacing on the ow meter, as
follows:
1. Rotate the black knob to unlock the horizontal motion for each transducer.
2. Move the transducers to the specied transducer spacing by sliding them along the integrated ruler. Note: It is not necessary to start at
zero on the ruler, so long as the actual spacing is correct.
3. Lock into place using the black knobs. This is important to prevent the
transducer spacing from moving when mounting the ow meter!
jWAVE INSTRUCTIONS
Black locking knob
on transducer
Integrated
ruler
Power Considerations
Your jWAVE Flow meter battery has been fully charged at the factory before shipping and is ready to go.* When it’s time to recharge the battery, the app will let you know.
When using the datalogging function and recording for more than 12 hours, the jWAVE must be connected to a power source, such as a portable USB power bank or a USB power adapter connected to an external power source.
* On a full charge, the jWAVE will have a shelf life of up to ve months. It is a good idea to charge the unit for a full ve hours if it hasn’t been used for
a month or two. On a full charge the meter should operate for up to 12 hours of continuous use. Note that if the battery is at, the power button LED will blink rapidly for ve seconds and then the meter will turn off.
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To prevent damage, you must use the supplied 12W charger ONLY.
FLOW METER INSTALLATION
jWAVE INSTRUCTIONS
Installing the Flow meter
Once the transducer spacing has been set and locked in place, you are ready to install the ow meter on your pipe.
1. Rotate the silver knobs counter clockwise until they stop. This raises the transducers up above the meter footings.
2. Apply coupling gel liberally to the transducer faces, covering the entire bottom face of each transducer.
3. Place ow meter on pipe, assuring that the footings are ush with the pipe and the meter is aligned with the axis of the pipe.
4. Strap the meter to pipe with the mounting straps, clamping the straps into the cam cleats. Hand tighten only!
5. Rotate silver knobs clockwise to press transducers onto the pipe. Hand tighten only until seated rmly.
Warning: Tightening too much can lift the meter away from the pipe, causing incorrect readings.
Rotate silver knobs counter-clockwise to
raise the transducers, clockwise to lower.
Cover bottom face of transducers with coupling gel.
Wrap cords around pipe and secure with cam cleats.
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OPERATION
Collecting Your Data
jWAVE INSTRUCTIONS
Be sure the app is running on your mobile device.
Turn on power to the ow meter by pressing the power
button on the left top of the meter.
A steady LED indicates that power is on. The LED will ash if
the meter is charging on external power. (Note: Older units may not ash.)
The app will display a list of all jWAVEs within its range. Tap the one you are currently using.
(Note: Your app will check the ow meter to be sure it has the most recent programming. If there is a newer version available, it will give you the option of updating the meter. This may take three to ve minutes.)
Your ow data will display on the jWAVE App.
When you are done collecting data, snap the cords out of their cam cleats and you are ready to move on to your next location. The next time you return to this location, the jWAVE App will remember your settings.
Power button
Data Logging
The purpose of the jWAVE’s built-in data logger is to record ow for a specied period of time. It may be used to conveniently record ow for as long as 14 days
or as little as one minute. While conveniently battery powered, the jWAVE has limited memory. Thus, only one data log may be used at any one time. As the
jWAVE data logger uses Bluetooth (BLE) to transfer data from the ow meter to
the mobile device, data transfer speed is limited by BLE, which is not designed to transfer large data sets. Transferring the maximum sized data set will take up to 5 1/2 minutes.
All data logging functions are accessed by tapping the Data Logging button in the measurement view.
The jWAVE’s data logger stores only one data set at any time, selecting “Rec” (which creates a new data log) will write over the existing data log. A message appears when selecting the “Rec” button indicating that the existing data log will be over-written if a new data log is started and gives the user the ability to continue with the new data log or to cancel.
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OPERATION
Making a Recording
Connect to the meter with the jWAVE App.
Tap the Data Logging button to access the data logger features.
Using the slider bar in the app’s data logger setup view, set the recording time. (See Explanation of Recording Times on the next page.)
Tap “Rec” to start the recording. Data will start recording on the meter. You can disconnect the mobile app during recording. The meter will turn off when done to save power, unless still connected to the app.
To stop recording prior to completing the time period, connect the jWAVE App to the meter, tap the Data Logging button, and tap “Stop.”
The status of the data logger is indicated by the color and text of the data logger setup button, located in the measurement view. If data logger is active, the button is outlined in red, shows a red disk drive, and displays “in progress.” If the data logger is completed, the button is outlined in green, shows a green disk drive, and “complete.” The data logger setup view also displays the remaining recording time for conveniently checking progress of data logging.
Active data
logging session
running.
jWAVE INSTRUCTIONS
Data logging
session complete.
Uploading Data
Data is stored on the ow meter and may be retrieved at any
time. To upload data, the data logger must be either complete or
stopped and the app must be connected to the ow meter. Data is
uploaded using the “share” button located to the right of the “Rec” button. Uploading the maximum sized data set may take up to 5 1/2 minutes.
iOS users: If you want to quickly review your data at any time, tap the “share” button, and then tap Quick Look. This displays the data log in a spreadsheet for immediate viewing on your mobile device.
Sharing Data
You only need to upload the data log once from jWAVE. Once the data is uploaded, it may be shared any number of times without additional uploading, until a new data log is started. Tap the “share” button to share the data by a number of methods, email, text, AirDrop, Google Drive, etc., depending on what is available on
your mobile device. Shared data is formatted in a CSV le (comma delimited le). The le name is unique and contains both the date
and time that the data log was started as well as the location name. Setup information such as the date and time the data log was started, the number of samples, sampling period, and location
name are located at the top of the data le. The data is arranged in rows, where each row contains a single ow measurement including sample number, time stamp, ow rate, velocity, volume, and quality. The data le can be viewed or printed as a text le or formatted
using most spreadsheet and database programs, such as Microsoft® Excel or Access.
iOS
Android
Upload data by tapping the “share” button.
iOS users: Tap “Quick Look” for immediate viewing of your data. (Tap the upper left corner of the screen to close the Quick Look view.)
NOTE: The app must be connected to the jWAVE in order to share the data or view it with Quick Look.
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OPERATION
jWAVE INSTRUCTIONS
Explanation of Recording Times
The sampling rate (time between each recorded ow measurement) and total number of recorded measurements is controlled by the jWAVE. The maximum possible number of ow measurements is 3750 and each includes ve values-
-ow rate, total, velocity, time stamp, and quality. The maximum sampling rate is two seconds.
The jWAVE data logger will attempt to maximize the sampling rate, based on the your selected recording time. For
example, if you select to record ow for one minute, then the jWAVE maximizes the sampling rate at two seconds and will record 31 ow measurements (covering a total of 60 seconds).
If you select to record ow for four days, then the jWAVE again attempts to maximize the number of ow measurements; however since there is not enough memory to record ow every two seconds for four days, it congures the sampling period to maximize the number of ow measurements. For the case of four days, the jWAVE sets the sampling period at 92 seconds giving you a total of 3716 ow measurements. (Note that because the jWAVE
uses whole seconds to set the sampling period, it is not able to always provide exactly 3750 samples to cover the
specied recording time. )
Length Sample Period
1 minute 2 seconds 1 hour 2 seconds 10 hours 9 seconds 1 day 23 seconds
When recording more than 12 hours, the jWAVE must be connected to an external power source, such as the USB power adapter supplied with the jWAVE.
4 days 92 seconds (1 min. 32 sec.) 10 days 230 seconds (3 min. 50 sec.) 14 days 322 seconds (5 min. 22 sec.)
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TROUBLESHOOTING
jWAVE INSTRUCTIONS
Problem Probable Causes Things to try…
Battery not charging Using wrong power supply Use the supplied 12W charger/power supply
No signal Incorrect setup Conrm pipe settings
Air in pipe Rotate meter to 3 o’clock position
Remove air
Relocate meter to another location where there is no air
Corroded rusty pipe Relocate meter to clean section of pipe. If no
clean section is available, move meter to other
locations until a signal is found—try to nd a
section of pipe with less corrosion or rust.
Can’t nd iOS App Searching under iPAD only In Apple Store, select iPhone only from menu
Device does not support Bluetooth
4.0 (BLE)
Can’t nd Android App Device does not support Bluetooth
4.0 (BLE)
Can’t nd jWAVE with app Device does not support Bluetooth
4.0 (BLE)
Bluetooth is not turned on Turn on Bluetooth
Not in range Move closer to the jWAVE
Use a device that supports Bluetooth 4.0 (BLE)
Use a device that supports Bluetooth 4.0 (BLE)
Use a device that supports Bluetooth 4.0 (BLE)
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Seametrics • 19026 72nd Avenue South • Kent, Washington 98032 • USA
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LT-14234r8.0-20160608
6/8/16
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