Teledyne TIENet 350 Operating instructions

TIENet® 350
Area Velocity Sensor
Installation and Operation Guide
Manual Body #69-4353-024
Copyright © 2021. All rights reserved, Teledyne ISCO
Revision E, August 2021
Use and Disclosure of Data Information contained herein is classified as EAR99 under the U.S. Export
Administration Regulations.
Export, reexport or diversion contrary to U.S. law is prohibited.

Foreword - Water and Wastewater Products
This instruction manual is designed to help you gain a thorough understanding of the operation of
the equipment. Teledyne ISCO recommends that you read this manual completely before placing
the equipment in service.
Although Teledyne ISCO designs reliability into all equipment, there is always the possibility of a
malfunction. This manual may help in diagnosing and repairing the malfunction.
If a problem persists, call or e-mail Teledyne ISCO technical support for assistance. Simple
difficulties can often be diagnosed over the phone. For faster service, please have your serial
number ready.
If it is necessary to return the equipment to the factory for service, please follow the shipping
instructions provided by technical support, including the use of the Return Merchandise
Authorization (RMA) specified. Be sure to include a note describing the malfunction. This will aid
in the prompt repair and return of the equipment. No item may be returned for service without a
Return Material Authorization (RMA) number issued by Teledyne.
Teledyne ISCO welcomes suggestions that would improve the information presented in this manual
or enhance the operation of the equipment itself.
Teledyne ISCO is continually improving its products and reserves the right to change product
specifications, replacement parts, schematics, and instructions without notice.
Contact Information
Customer Service
Phone: [phone] (USA, Canada, Mexico)
[phone] (Outside North America)
Fax: [phone]
Email: i[email protected]
Technical Support
Phone: Toll Free [phone] (Samplers and flowmeters)
Email: [e-mail]
Return
equipment to: 4700 Superior Street, Lincoln, NE 68504-1398
Other Correspondence
Mail to: P.O. Box 82531, Lincoln, NE 68501-2531
Warranty and Operation Manuals can be found on our website at:
www.teledyneisco.com

TIENet™ 350 Area Velocity Sensor
Safety
v
TIENet™ 350 Area Velocity Sensor
Safet y
General Warnings Before installing, operating, or maintaining this equipment, it is
imperative that all hazards and preventive measures are fully
understood. While specific hazards may vary according to
location and application, take heed of the following general
warnings:
WARNING
Avoid hazardous practices! If you use this instrument in
any way not specified in this manual, the protection
provided by the instrument may be impaired.
AVERTISSEMENT
Éviter les usages périlleux! Si vous utilisez cet instrument
d’une manière autre que celles qui sont specifiées dans ce
manuel, la protection fournie de l’instrument peut être
affaiblie; cela augmentera votre risque de blessure.
Hazard Severity Levels This manual applies Hazard Severity Levels to the safety alerts,
These three levels are described in the sample alerts below.
CAUTION
Cautions identify a potential hazard, which if not avoided, may
result in minor or moderate injury. This category can also warn
you of unsafe practices, or conditions that may cause property
damage.
WARNING
Warnings identify a potentially hazardous condition, which
if not avoided, could result in death or serious injury.
DANGER
DANGER – limited to the most extreme situations
to identify an imminent hazard, which if not
avoided, will result in death or serious injury.

TIENet™ 350 Area Velocity Sensor
Safety
vi
Hazard Symbols The equipment and this manual use symbols used to warn of
hazards. The symbols are explained below.
Hazard Symbols
Warnings and Cautions
The exclamation point within the triangle is a warning sign alerting you of
important instructions in the instrument’s technical reference manual.
The lightning flash and arrowhead within the triangle is a warning sign alert-
ing you of “dangerous voltage” inside the product.
Symboles de sécurité
Ce symbole signale l’existence d’instructions importantes relatives au
produit dans ce manuel.
Ce symbole signale la présence d’un danger d’électocution.
Warnungen und Vorsichtshinweise
Das Ausrufezeichen in Dreieck ist ein Warnzeichen, das Sie darauf
aufmerksam macht, daß wichtige Anleitungen zu diesem Handbuch
gehören.
Der gepfeilte Blitz im Dreieck ist ein Warnzeichen, das Sei vor “gefährlichen
Spannungen” im Inneren des Produkts warnt.
Advertencias y Precauciones
Esta señal le advierte sobre la importancia de las instrucciones del manual
que acompañan a este producto.
Esta señal alerta sobre la presencia de alto voltaje en el interior del
producto.

vii
TIENet®Model 350 Area Velocity Sensor
Table of Contents
Section 1 Introduction
1.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1.1 350 Velocity Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.1.2 350 Level Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3 Optional LaserFlow Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4.1 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.5 Unpacking Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Section 2 Installation
2.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1.1 Site Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Reference Line Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Preparing the Signature Flow Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.3.1 External Desiccator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.4 Connecting the Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.5 Installing the 350 AV Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.5.1 Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.5.2 Mounting Rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.5.3 Spring Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.5.4 Scissors Mounting Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.5.5 Completing the Sensor Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.6 Street Level Installation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.7 Grounding Kit for Surge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Section 3 Setup and Programming for the Signature
3.1 Configuring the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.1 Updating the Device List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.1 350 Velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.2 Advanced Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.2.3 Setting the 350 Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Section 4 Maintenance
4.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Firmware Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.3 External Desiccator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.4 In Pipe or Channel Sensor Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.5 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.6 Contact Teledyne ISCO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

TIENet®Model 350 Area Velocity Sensor
Table of Contents
viii
Appendix A Replacement Parts List
A.1 Replacement Parts Diagrams and Listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Appendix B Velocity Error Codes
B.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B.2 Importing Data Dump (.ddp) Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B.3 Viewing Velocity Error Codes in Flowlink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
List of Figures
1-1 Basic Signature monitoring system with 350 (mounting hardware not shown) . 1-1
1-2 TIENet Model 350 Area Velocity Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2-1 Remove red caps before installing external desiccant cartridge . . . . . . . . . . . . . . 2-3
2-2 Installing the external desiccant cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-3 External desiccator, installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4 Tubing configuration for optimal drying power . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-5 TIENet Device terminal strips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-6 Installing cable with a cord-grip fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-7 TIENet Device terminal connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-8 Attach wired terminal strip to case board socket . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-9 Insert the cable reference tubing into the case board reference port . . . . . . . . . . 2-8
2-10 Position and secure the cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-11 Sensor Installed on a Spring Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2-12 Scissors Ring adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
3-1 Character grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-2 Menu Tree: 350 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-3 Configuring level and velocity measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3-4 Measurement setup: Advanced settings for 350 AV sensor . . . . . . . . . . . . . . . . . . 3-5
3-5 350 Level adjustment screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
4-1 Desiccant indicating saturation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2 Removing the external desiccant cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-3 Opening the desiccant cartridge chambers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
B-1 Signature flow data: Selecting the .ddp file(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B-2 Signature flow data: Importing the .ddp file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
B-3 Identifying error codes in the 360 Velocity data set . . . . . . . . . . . . . . . . . . . . . . . B-3

1-1
TIENet®Model 350 Area Velocity Sensor
Section 1 Introduction
The Teledyne ISCO TIENet 350 Area Velocity Sensor measures
flow stream average area velocity and liquid level. The Sig-
nature®Flow Meter uses this information to calculate the flow
rate and total flow of the stream. To operate with the 350 sensor,
the Signature requires software version 1.18 or later.
1.1 Description The 350 sensor is mounted in the flow stream, normally at the
bottom of the channel. It measures average velocity using con-
tinuous ultrasonic sound waves to produce a Doppler effect, in
which the frequency of a wave (such as sound) passed between
two bodies is relative to the motion of each. As they move nearer
to each other, the frequency increases; as they move apart, the
frequency decreases.
The 350 sensor measures liquid level using an internal differ-
ential pressure transducer.
Figure 1-1 Basic Signature monitoring system with 350 (mounting hardware not shown)
Signature Flow Meter
TIENet 350 AV Sensor

TIENet®Model 350 Area Velocity Sensor
Section 1 Introduction
1-2
The 350 AV sensor is available with a 10m, 23m cable. For
greater distances, external connection via conduit, and con-
nection of additional TIENet devices, the TIENet Expansion Box
is available. Bulk TIENet cable may also be used for greater dis-
tances.
Figure 1-2 TIENet Model 350 Area Velocity Sensor
1.1.1 350 Velocity Operation The 350 area velocity sensor contains a pair of ultrasonic trans-
ducers. One transducer transmits the ultrasonic sound wave. As
the transmitted wave travels through the stream, particles and
bubbles carried by the stream reflect the sound wave back at the
sensor. The second transducer receives the reflected wave.
The sensor determines the frequency shift between the trans-
mitted and received waves. An increase or decrease in the fre-
quency of the reflected wave indicates forward or reverse flow.
The degree of change is proportional to the velocity of the flow
stream.
1.1.2 350 Level Operation The 350 sensor’s internal differential pressure transducer mea-
sures the liquid level. The transducer is a small piezo-resistive
chip that detects the difference of the pressures felt on the inner
and outer face.
The stainless steel outer diaphragm is exposed to the flow stream
through the ports under the sensor. The pressure felt on the
outer diaphragm is transferred to the outer face of the trans-
ducer. The inner face of the transducer is referenced to the atmo-
sphere through the internal vent tube that runs the full length of
the sensor cable.
The difference between the pressures exerted on the transducer
is the hydrostatic pressure, which is proportional to the level of
the stream above the transducer. The analog representation of
the hydrostatic pressure is digitized and sent to the Signature as
an RS-485 half-duplex signal.
Particles or
air bubbles
Ultrasonic
sound waves
Flow

TIENet®Model 350 Area Velocity Sensor
Section 1 Introduction
1-3
1.2 Technical
Specifications
Table 1-1 350 TIENet Sensor Specificationsa
Sensor Dimensions 1.9 3.3 15.2 cm 0.75 1.31 6.00 in
Standard Cable Length 10, or 23 m 16.4, 32.8, or 75.5 ft
Cable Diameter 10.2mm ±0.254mm 0.402 in ±0.010 in
Minimum Bend Radius 15.24 cm 6 in
Maximum Cabling from Signature Flow Meter 305 m 1,000 ft
Typical Weight
w/ 10 m Cable
w/ 23 m Cable
1.68 kg 3.70 lb
3.10 kg 6.84lb
Body Materials PDVF
Cable Materials UV-Rated PVC
Temperature Range
Operation
Storage
0 to 70 °C 32 to 158 °F
-40 to 70 °C -40 to 158 °F
Power Input
Voltage
Supply Current @ 12VDC Nominal
7 to 13.2 VDC
Measurement: 100 mA
Level Measurement
Technology Submerged differential linear pressure transducer with
integral digital temperature compensation coefficients.
Rangeb0.010 to 3.05 m 0.033 to 10 ft.
Pressure Rating 5 PSI
Maximum Submersible Depth 10.55 m 34.6 ft
Accuracyc± 0.10% FS
Typical Long Term Stability ± 0.007m/yr ± 0.023 ft/yr
Compensated Temperature Range 0 to 70°C 32 to 158°F
Velocity Measurement
Technology Continuous wave Doppler ultrasonic
Frequency 500 kHz
Transmission Angle 20° from horizontal
Velocity Direction Bi-Directional (User selectable)
Typical Minimum Depth for Velocity Measurement 2.5 cm 1.0 in
Range -1.5 to +6.1 m/s -5 to +20 ft./s
AccuracydVelocity Error
-5 to +5 ft./s: -1.5 to +1.5 m/s ±0.1 ft./s (±0.03 m/s)
5 to 20 ft./s: 1.5 to 6.1 m/s ±2% of reading
a. All specifications are subject to change without notice.
b. Actual vertical distance between the area velocity sensor and the liquid surface
c. Maximum non-linearity, hysteresis, and temperature error from actual liquid level
d. Uniform velocity profile, speed of sound 1480 m/s (4850 ft/s)

TIENet®Model 350 Area Velocity Sensor
Section 1 Introduction
1-4
1.3 Optional LaserFlow
Applications
Some applications using the Teledyne ISCO LaserFlow™
remote-sensing velocity sensor require provisions for continued
measurement in the event of submersion, or for redundant flow
measurement of the same flow stream.
The 350 sensor can be added to a LaserFlow system to fill either
of these requirements. For more information, refer to the
LaserFlow user manual.
1.4 Accessories Accessories used in sensor installation are briefly described
below. Refer to the next section for ordering information.
The 350 Area Velocity Sensor can be installed using ISCO’s
mounting rings listed below. A Low Profile Carrier is optional
when attaching the 350 to a mounting ring (not for use with the
Street Level Installation System).
TIENet 350 AV Sensor w/ 10m Cable ..................................................................................... 60-4354-113
TIENet 350 AV Sensor w/ 23m Cable ..................................................................................... 60-4354-114
TIENet 350 AV Sensor w/ 2ft Cable & TIENet Plug Connector............................................ 60-4354-117
Cord grip fitting, 3/4" NPT, for TIENet cable .......................................................................... 209-0073-12
Bulk TIENet Cable, Cut to Length ......................................................................................... 60-4304-050
TIENet Expansion Box ............................................................................................................ 60-4307-023
TIENet Expansion Box with reference line support .............................................................. 60-4357-018
Signature Flow Meter Exterior desiccator
(required for use with 330 and 350 TIENet devices) .......................................................... 60-4304-092
Silica gel desiccant, 1-lb container .......................................................................................... 60-2004-233
Low Profile Carrier
(attaches the 350 sensor to a standard-size ring or plate)
(With plastic ties & instructions)......................................................................................... 60-3204-029
Extra Mounting Screws for use with Mounting Rings........................................................... 231-5113-06
Standard Spring Rings
(Includes plastic cable ties to fasten the cable and a manual)
6" Dia......................................................................................................................................... 68-3200-007
8" Dia......................................................................................................................................... 68-3200-008
10" Dia....................................................................................................................................... 68-3200-009
12" Dia....................................................................................................................................... 68-3200-010
15" Dia....................................................................................................................................... 68-3200-011
Standard Scissors Rings
(Includes a base section, scissors mechanism, extensions, plastic cable ties, and manual)
16-24" Pipe ................................................................................................................................ 68-3000-042
26-38" Pipe ................................................................................................................................ 68-3000-043
38-44" Pipe ................................................................................................................................ 68-3000-044
44-48" Pipe ................................................................................................................................ 68-3000-045
60" Pipe ..................................................................................................................................... 68-3000-046
72" Pipe ..................................................................................................................................... 68-3000-047
16-60" Pipe ................................................................................................................................ 68-3000-048

TIENet®Model 350 Area Velocity Sensor
Section 1 Introduction
1-5
Base Section (with plastic cable ties and manual) ................................................................. 60-3004-169
Street Level Installation System Multi-section Pole (Includes manual. To complete your system, you
must also order a Street Level Mounting Ring) .................................................................. 60-3204-012
Street Level Mounting Ring for 6" dia. pipe ........................................................................... 60-3204-014
Street Level Mounting Ring for 8" dia. pipe ........................................................................... 60-3204-015
Street Level Mounting Ring for 10" dia. pipe ......................................................................... 60-3204-016
Street Level Mounting Ring for 12" dia. pipe ......................................................................... 60-3204-017
Street Level Mounting Ring for 15" dia. pipe ......................................................................... 60-3204-018
1.4.1 Ordering Information Options and accessories can be purchased by contacting Teledyne
ISCO’s Customer Service Department.
Teledyne ISCO
Customer Service Dept.
P.O. Box 82531
Lincoln, NE 68501 USA
Phone:[phone]or402 464-0231
FAX: [phone]
E-mail: [e-mail]
Note
Teledyne ISCO uses FreeRTOS version 5.4.2 in its TIENet
devices. In accordance with the FreeRTOS license, FreeRTOS
source code is available on request. For more information, visit
www.FreeRTOS.org.
1.5 Unpacking
Instructions
When the system arrives, inspect the outside packing for any
damage. Then carefully inspect the contents for damage. If there
is damage, contact the delivery company and Teledyne ISCO (or
its agent) immediately.
WARNING
If there is any evidence that any items may have been
damaged in shipping, do not attempt to install the unit.
Please contact Teledyne ISCO (or its agent) for assistance.
When you unpack the system, check the items against the
packing list. If any parts are missing, contact the delivery
company and Teledyne ISCO’s Customer Service Department.
When you report missing part(s), please indicate them by part
number. In addition to the main packing list, there may be other
packing lists for various sub-components.
It is recommended that you retain the shipping cartons as they
can be used to ship the unit in the event that it is necessary to
transport the system.
Please complete the registration card and return it to
Teledyne ISCO.

2-1
TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
The Signature Flow Meter does not have to be mounted near the
flow stream. You can install the flow meter itself at a convenient,
protected location and route the sensor cable to the measurement
point (maximum length of 305 meters or 1,000 feet). Proper
installation of the 350 sensor is critical for accurate mea-
surement.
2.1 Safety Before installing, operating, or maintaining this equipment, it is
imperative that all hazards and preventive measures are fully
understood.
2.1.1 Site Conditions Components are often installed in confined spaces. Some
examples of confined spaces include manholes, pipelines,
digesters, and storage tanks. These spaces may become haz-
ardous environments that can prove fatal for those unprepared.
These spaces are governed by OSHA 1910.146 and require a
permit before entering.
WARNING
The installation and use of this product may subject you to
hazardous working conditions that can cause you serious
or fatal injuries. Take any necessary precautions before
entering a worksite. Install and operate this product in
accordance with all applicable safety and health
regulations, and local ordinances.

TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
2-2
2.2 Reference Line
Support
The optional water-tight Signature
Expansion Box enables a variety of
configurations for adding length, as
well as connecting multiple devices
at once. The Expansion Box con-
nects to a TIENet™ terminal strip
in the Signature, and contains
three additional strips inside, as
well as a TIENet connection for an
option card.
Adding Length Between
Signature and Sensors
Distance can increased by installing the Expansion Box closer to
the field-mounted TIENet device(s) and adding a custom-length
TIENet cable between the box and the Signature. The maximum
recommended distance between system components is 305
meters (1,000 feet). Longer distances may result in signal degra-
dation and drops in voltage.
Distance of 100 Feet or
Less
The un-vented TIENet expansion
box can be used if the total distance
is 30.5 meters (100 feet) or less. The
Signature’s air system will nor-
mally supply adequate desiccated
air through the TIENet cable air
line to the interior of the expansion
box. This means the 350 AV sensor
is referenced at the Signature’s
installation location.
Distances Greater than 100
Feet
If the total distance is greater than
30.5 meters (100 feet), or a different
reference location is required, the
reference air line must be vented
outside the expansion box. The
TIENet expansion box with ref-
ere nce air is designed for this
p u r po s e . T h e d es i c ca to r t u b e
mounted on the side vents dried air
to its interior.

TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
2-3
2.3 Preparing the
Signature Flow Meter
In order to operate with the 350 AV sensor, the Signature must
have an external desiccator installed.
2.3.1 External Desiccator For Signature systems using the 330 Bubbler Module and/or the
TIENet 350 Area Velocity Sensor, the external desiccator dries
the reference air for a pressure transducer and air supply for the
bubbler.
Signature bubbler systems will already have a desiccator
installed. If you are adding a 350 AV sensor to a non-bubbler
system, you will also need to add an external desiccator.
Remove the two red protective end caps from the ports before
installing a new cartridge.
Figure 2-1 Remove red caps before installing external
desiccant cartridge
The desiccant cartridge is held in place by a spring tab on the
side of the flow meter. Slide the cartridge onto the tab, engaging
the two ports with the openings in the side of the Signature.
Figure 2-2 Installing the external desiccant cartridge

TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
2-4
Figure 2-3 External desiccator, installed
The desiccant cartridge requires periodic maintenance. Refer to
Section 4.3 External Desiccator for instructions.
Optimizing drying power Some Signature flow meters have a single piece of tubing
installed between the reference port and the humidity connector,
and a cap plug on the intake port. While a Signature with this
tubing configuration will operate satisfactorily with the 350 AV
sensor in most situations, you can configure the tubing to utilize
both chambers of the external desiccator to increase drying
power.
Items required:
• Plastic ‘Y’ Fitting (Part #209-0167-49)
•0.25 x 0.125 silicone tubing (Part #60-2003-104: Two
2-inch pieces)
Procedure:
1. Remove the cap plug.
2. Disconnect the tubing from the humidity connector and
reroute it behind the ribbon cable.
3. Connect both the reference port tubing and the intake port
tubing to the ‘Y’ connector.
4. Connect the ‘Y’ connector to the humidity connector (Fig-
ure 2-4).
To air intake
To reference port

TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
2-5
Figure 2-4 Tubing configuration for optimal drying power
2.4 Connecting the Cable External TIENet devices such as the 350 are all electrically con-
nected to the Signature flow meter in the same manner, usually
using conduit or cord-grip cable fittings. Multiple external
TIENet devices can be connected simultaneously. Refer to your
Signature flow meter manual for instructions on accessing the
instrument’s interior components.
WARNING
Before proceeding, ensure that the flow meter has been
disconnected from mains power.
Note
The steps that follow include instructions for installing cord-grip
fittings. Some applications will use user-supplied 3/4" ID con-
duit for cable routing.
CAUTION
If you are using conduit instead of the cord-grip fitting, the con-
duit must be sealed to prevent harmful gases and moisture
from entering the Signature enclosure. Failure to seal conduit
could reduce equipment life.
Reference port tubing
Intake port
tubing
Humidity
connector
tubing

TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
2-6
1. Remove one of the 6-position plug-in terminal strip connec-
tors from the case board.
Figure 2-5 TIENet Device terminal strips
2. If using a cord-grip fitting, install the cable nut in the
appropriate opening on the bottom of the Signature enclo-
sure, securing it to the wall with the lock nut (concave side-
facing wall).
3. Feed the TIENet device cable end through the sealing nut
and seal, and through the cable nut. Lightly tighten the
sealing nut, just enough to hold the cable in place while
installing the connector.
Figure 2-6 Installing cable with a cord-grip fitting
4. Attach the wire ends to the terminal strip as shown in Fig-
ure 2-7, then press the terminal strip back down into its
socket on the case board, as shown in Figure 2-8, taking
care not to strain any wire connections. Gently tug each
wire when finished, to verify secure connection to the
screw terminals.
Lock Nut
(concave side
facing wall)
Cable Nut
Seal
Sealing Nut
(color may vary

TIENet®Model 350 Area Velocity Sensor
Section 2 Installation
2-7
Note
The SHIELD wire is the bare drain emerging from the foil
shield a roun d th e Y E LLOW and BROWN wires. The
BRAID-DRAIN wire is the bare drain emerging from the sur-
rounding braided shield inside the cable jacket. It is not neces-
sary to prevent the two braids from coming into contact with
each other.
Figure 2-7 TIENet Device terminal connections
Figure 2-8 Attach wired terminal strip to case board
socket