Permasense ET310 WiHART User manual

1 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
This guide details the installation process for ET310 WiHART sensors. It assumes the user is familiar
with the operation of the IK220 installation kit.
Refer to User guide –IK220 installation kit for more detailed usage instructions.
Refer to Overview –ET310 WiHART system deployment for the full list of system documentation.
Table of contents
Safety notices.....................................................................................................................................................................2
Compatibility .....................................................................................................................................................................2
Technical background.......................................................................................................................................................2
Installation requirements .................................................................................................................................................3
Task 1. Mounting the sensor...........................................................................................................................................4
Task 2. Fitting the lanyard ...............................................................................................................................................8
Task 3. Provisioning the sensor on the radio network ............................................................................................10
Task 4. Completing sensor installation .......................................................................................................................10
Task 5. Sealing the cladding...........................................................................................................................................11
Re-installing a sensor (if required) ...............................................................................................................................12
Re-provisioning a sensor (if required).........................................................................................................................12
Maintenance .....................................................................................................................................................................12
Installation guide –ET310 WiHART sensors

2 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
Safety notices
Installation of this sensor in an explosive environment must be in accordance with the
standards and practices appropriate to the site.
Review the Regulatory Compliance section in Datasheet –ET310 WiHART sensor for
restrictions for safe installation.
Only fit approved Permasense or Rosemount BP20E power modules.
Use supplied lanyard to prevent sensor falling from heights, potentially causing injury.
The sensor contains magnets which can be harmful to pacemaker wearers.
The sensor can be suddenly attracted to other objects such as tools. This can cause injury as well as
damage to the sensor. Only remove the protective cap when necessary and then take great care.
Cut strap may have sharp edges, wear appropriate PPE.
Do not put fingers in the gap between the tensioner bolts and the strap.
Do not cut the strap while it is under tension as this may result in damage or injury.
Changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
Ensure the device is installed with an antenna separation distance of at least 20cm (8”) from all persons.
Potential electrostatic charging hazard - do not rub or clean with a dry cloth.
Compatibility
ET310 WiHART sensors can be used in networks with other WirelessHART devices, including Permasense
and Rosemount WT210, ET210 and ET410 sensors. Compatible with Emerson Wireless 1410 and 1420
Gateways. For compatibility with other gateways, contact Permasense.
Technical background
Permasense systems are corrosion monitoring solutions for
use in oil and gas and other industrial facilities using
permanently installed ultrasonic wall thickness measurement
sensors.
An ET310 sensor requires no couplant and is intended for
use on painted pipes. It is held against the surface of the pipe
using a low force produced by its internal magnet and the
securing strap. Multiple sensors can be attached to a pipe
using a single strap.
Once correctly installed the sensor creates ultrasonic waves
in the surface of the pipe which travel through and
reverberate in the pipe wall. One or more echoes are seen
in the received signal. The thickness is calculated from this
signal.
Ring
Antenna
Power module
Head
Shoe
Lanyard hole
Foot
Strap Slot
slot

3 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
Once a sensor is installed, it communicates with the gateway specified during installation and any other
sensors already installed that are assigned to the same gateway. These sensors form a wireless mesh
network. The gateway manages this mesh, selecting the best path to transmit data from each sensor to the
gateway. The gateway then delivers this data to the Permasense Data Manager software, which the end
user can use to view the data in a browser.
Installation requirements
Before sensor installation:
Emerson Smart Wireless gateway must be installed.
Network ID and provisioning information (join keys) for the gateway must be known.
Access to the sensor locations must be in place.
If lines are insulated, all insulation must be removed at sensor locations to allow access for sensor
installation.
Hardware supplied with the sensor
Permasense ET310 sensor, complete with shoe and protective cap
Lanyard kit, comprising 2m of 316 stainless steel lanyard with looped end and cable lock
Strap (3.5m / 138 inches) and strap tensioner
Permasense BP20E power module, one per sensor
Tooling supplied in IK220 installation kit
Rugged tablet PC, preloaded with Permasense installation software
CC21 USB powered commissioning communicator
Ratcheting wrench with 8mm socket
Flathead screwdriver
Tin snips
Hex key, 2.5mm, for power module retaining bolts

4 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
Optional tooling –if preferred, an electric screwdriver may be used instead of the supplied tools to speed
up the installation process. This is not included in IK220 installation kit.
Alternative shoe –if the sensor is to be installed on a pipe with a diameter less than 4”, an alternative shoe
should be ordered which is designed to fit to small diameter pipes. Please consult Permasense.
Task 1. Mounting the sensor
Note: Two people are required for this operation.
PPE of gloves and safety glasses or full face visor are recommended.
1. Identify the location where the sensor is to be fixed. The securing strap can be installed around pipes
up to 1m (40 inches) in diameter. Ensure all cladding and insulation is removed around the
circumference of the pipe at the desired sensor location.
2. Unbox the strap tensioner and strap from the packaging.
3. Cut a length of strap by wrapping it around the
pipe and adding 25cm [10”]. As a rough guide, if
the diameter is D cm / inches, the length can be
approximated by (3 x D + 25) cm or (3 x D +
10) inches. Feed the strap into one end of the
strap tensioner and using the flathead
screwdriver or wrench and socket provided,
turn the screw on the tensioner until the end
of the strap emerges from under the worm
drive (at least 5 turns of the worm-screw is
required).
4. Clean the area where the sensor will touch the pipe, mainly to remove any particles which might keep
the transducer away from the pipe surface or damage the face of the transducer. A permanent marker
may be used to show exactly where each sensor is to be placed on the pipe.
5. Remove the protective cap from the sensor.
Note: Ensure tools and fastenings are kept away from the sensor when the cap is removed as there is
a strong magnetic field at the end of the sensor.
If the rubber shoe needs to be refitted, ensure the ring is still in
place, then fit the shoe onto the sensor by pushing the two pegs
protruding from the foot of the sensor into the holes in the shoe.
If the ring is missing, do not use the sensor.
If the sensor is to be placed on a pipe less than 4” in diameter, fit
the alternative shoe.

5 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
6. Carefully place the sensor in the required location on the pipe. Note that
the magnets used in the sensors have a high pull force. To avoid damage,
and to get the precise location for each sensor, initially place the sensor at
an angle to the pipe…
…and then gently lower the shoe onto the pipe.
Note: One person should hold the sensor until the strap is installed.
7. Feed the previously cut strap through the slot
hole of the sensor and around the pipe.
8. Then feed the free end of the strap into the
other end of the strap tensioner and using the
flathead screwdriver or wrench and socket
provided, turn the screw on the tensioner until
the end of the strap emerges from under the
worm drive (at least 5 turns of the worm-screw
is required).

6 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
9. Position the strap tensioner such that the strap just touches the pipe between the sensor and the strap
tensioner as per images below.
Note: The relative positions of the strap tensioner and the sensor change depending on the pipe diameter.
On pipes of less than 4” diameter, position the sensor and tensioner on opposite sides of the pipe.
Note: If there are obstructions which do not allow for the recommended strap tensioner position relative
to the sensor, then move the strap tensioner away from the sensor to the closest accessible position.

7 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
When installing multiple sensors on one strap it is important to ensure the strap makes contact with the
pipe between each of the sensors and the tensioner.
Maintaining this spacing and the length of the strap provided, determine the maximum number of sensors
that can share the same strap for a given pipe size.
Pipe size
2” to 9”
10” to 22”
24” to 36”
40”
Maximum permitted number of sensors
1
2
3
2
This also restricts the locations you can mount multiple sensors on a pipe using a single strap. If closer
spacings are desired, multiple straps must be used.
Note: When mounting multiple sensors on a single strap, only one tensioner is required.
10. Ensure the strap tensioner, strap
and sensor(s) are in line before
tightening the 2 worm-screws on
the strap tensioner.
Note: This step is critical to the
strap tensioner functioning as
intended. Check alignment before,
throughout and after step 11.
11. Tighten both worm-screws with the flathead screwdriver or wrench and socket provided, ensuring the
tensioner does not slide relative to the pipe. As the worm-screws are tightened, observe the position
of the metal plate on top of the spring through the + shaped cut-out on the side of the tensioner. The
correct tension is set when the plate is aligned with wide part of the middle of the cut-out as shown in
the images below.
Note: When the worm-screws are tightened, the springs in the tensioner are compressed. To avoid
the strap becoming lose or over-tightened when the pipe temperature changes, it is important that the
spring is set to the correct tension. Do not over-tighten the worm-screws.

8 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
Note: As the tensioner is tightened ensure the sensor(s), strap and strap tensioner remain in-line.
12. Ensure that the parts on both sides of the strap tensioner assembly have aligned. If not, loosen/adjust
the worm-screws on either side until they do. Ensure the sensor is firmly fixed and sitting
perpendicular to the pipe as shown in step 10.
Task 2. Fitting the lanyard
1. Wrap the lanyard around the circumference of the pipe, on top of any cladding. The 2m (7ft) length is
sufficient for a diameter of up to 20”. When it is not possible to wrap the lanyard around a pipe, find
an alternative attachment point for the lanyard.
For pipes exceeding 20” in diameter, lanyards may be linked together.
For sensors in close proximity to each other, a single lanyard may be used.
2. Thread the bare end of the wire through the loop in the lanyard to secure it to the pipe.

9 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
3. Feed the bare end of the lanyard into the cable lock and push
the lock up the lanyard.
4. Feed the bare end through the strap tensioner…
Do not put fingers under bolts of the tensioner. Take
special care when the bare end of the lanyard is fed through
the tensioner.
5. … then through the lanyard hole in each sensor and into the return
hole of the cable lock. Feed the lanyard wire through the cable lock to
minimize the slack in the wire.
Note: The lanyard wire can be released from the cable lock
using the release key.

10 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
Task 3. Provisioning the sensor on the radio network
1. Provision the sensor to join the gateway using the installation app
Refer to User guide –IK220 installation kit for detailed instructions. A summary of the steps is given
below
2. Record the installation location, sensor ID, MAC address of the sensor, and power module serial
number.
Task 4. Completing sensor installation
In the installation app software on the Installation tab:
1. Press the Start button. Wait for an ultrasonic waveform to download from the sensor.
Note: Waveforms are automatically downloaded every 10 seconds. When a new waveform
arrives, the lines briefly become thicker.
2. Check the quality of the waveform. The first one or two reflections must be well defined above the
noise. Only one reflection is needed to calculate a thickness. If the signal is poor, loosen the strap by
unscrewing one of the worm-screws. Move the sensor and strap to a slightly different position then
follow steps 10 to 12 from task 1 to reinstall sensor in the new position. Once the sensor is safely
reinstalled on the pipe, wait 20 seconds before assessing the waveform quality for the new location.
1. Enter network
ID and Join Key
2. Click Provision
3. Check the network ID of the gateway
is visible in the network discovery list

11 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
3. Check the measured thickness displayed is in line with expectations.
4. Press the Complete button. Verify that the Install State is Off and Installed is ticked in the footer of the
application.
5. Remove the CC21 and fit the power module, tightening the two power module retaining bolts.
When the power module is fitted, the sensor will restart and try to join the WiHART gateway. In a
large network of 100 sensors this can often take 2 hours, and sometimes up to 6 hours.
Refer to Installation guide –BP series power module.
Sensor installation is now complete.
Task 5. Sealing the cladding
1. Re-pack the cavity around the sensor with insulation
2. Replace the cladding around the sensor and strap.
3. Apply sealant where necessary to ensure the sensor and cladding are well sealed.
Good
waveform
Bad
waveform

12 Permasense Ltd, Alexandra House, Newton Road, Manor Royal, Crawley, RH10 9TT, UK
www.permasense.com [e-mail] [phone]
Re-installing a sensor (if required)
If the sensor is producing a poor-quality ultrasonic signal, it can be reinstalled:
1. Attach the CC21 to the tablet PC and the sensor and run the installation app.
2. On the Installation tab, press the Reset button and then follow the instructions described in Task 4.
Note: The sensor will no longer join the network until the Complete button is pressed again.
3. If the sensor has to be moved, loosen the strap by undoing the worm-screw in contact with the pipe
until the strap is released from the worm-drive, then follow the instructions described in Task 1 as for
a new installation. Where possible, leave the lanyard in place to prevent a hazard should the sensor fall.
Do not cut the strap while it is under tension. Doing so will
result in the sudden release of energy from the tensioner
which could cause damage or injury.
4. Before re-installation, ensure the ring and shoe are still in place. If either is missing, do not use the
sensor.
Re-provisioning a sensor (if required)
A sensor can be re-provisioned, if required to assign the sensor to a different gateway, without needing to
physically reinstall the sensor:
1. Remove the power module and attach the CC21 to the tablet PC and the sensor and run the
installation app.
2. On the Provision tab, enter the new provisioning information.
3. Click the Provision button.
The Join Network button can be pressed to start the sensor join process and receive on-screen feedback
about the join state of the sensor.
Note: Although the join process often takes just a few minutes, it can take several hours depending
on the size and activity of the network.
See User guide –IK220 installation kit for more details about using the status bar to identify the join state.
Maintenance
The ET310 sensor is a sealed unit with no user serviceable parts.
See Installation guide - BP series power module if the power module requires changing.
Revision 7, 26/10/2020 © Permasense Ltd. Permasense is a registered trademark of Permasense Ltd.