TROLEX TX5951 Sentro Vortex Air Flow Detector User Manual

: June 16, 2024
: Trolex

TX5951 Sentro Vortex Air Flow Detector

Product Information

Specifications

Product Name: TX5951 Sentro Vortex Air Flow Sensor
Operating Features: 0.4 to 2 V, 4 to 20 mA, Dual relay
contacts
Application: Fixed point gas flow velocity measurement in
pipes, ducts, and open roadways
Product Options: Rear Projecting Sensor, Side Projecting
Sensor, Remote Mounted Sensor
Dimensions: Available in different sizes for different sensor
types
Technical Information: Available in the user manual
Electrical Details: Available in the user manual
Sentro Module: Integrated module for setup and calibration
Certification: Certification details available in the user
manual

Installation

Tools and Test Equipment Required

To install the TX5951 Sentro Vortex Air Flow Sensor, you will
need the following tools and test equipment:

List of tools and equipment required for installation

Siting Recommendations

When selecting the installation site for the sensor, consider
the following recommendations:

Fitting in pipes and ducts: Follow the guidelines provided in
the user manual for fitting the sensor in pipes and ducts.
Fitting in roadways and tunnels: Follow the guidelines provided
in the user manual for fitting the sensor in roadways and
tunnels.

Orientation of the Housing

The orientation of the housing should be adjusted based on the
installation site. Refer to the user manual for specific
instructions on adjusting the housing orientation.

Connections

Make the following connections for the TX5951 Sentro Vortex Air
Flow Sensor:

0.4 to 2 V Analogue Output Signal: Follow the instructions in
the user manual for making this connection.
4 to 20 mA Analogue Output Signal: Follow the instructions in
the user manual for making this connection.
Dual Relay Contact Output Signal: Follow the instructions in
the user manual for making this connection.
RS485 Data Output Signal: Follow the instructions in the user
manual for making this connection.
Earthing: Follow the guidelines provided in the user manual for
proper earthing of the sensor.

Setup and Calibration

Controls and Indicators

The TX5951 Sentro Vortex Air Flow Sensor features the following
controls and indicators:

List of controls and indicators available on the sensor

Software Menus

The sensor can be configured using software menus. The available
menus are:

Sentro Setup
Output Setup
Module Setup
Exit

Use the navigation buttons on the sensor to navigate through the
software menus. Refer to the user manual for detailed instructions
on navigating through the menus.

Power-up

To power up the sensor, follow these steps:

Step 1: Insert the power cable into the sensor.
Step 2: Connect the power cable to a 24 V dc power supply.
Step 3: Switch on the power supply.

After powering up the sensor, you will be taken to the main
menu. From here, you can access different setup options:

Sentro Setup: Configure Sentro settings
Output Setup: Configure output settings
Module Setup: Configure module settings
Exit: Exit the setup menu

Support

If you need assistance with the setup or calibration of the
sensor, refer to the support section in the user manual. It
provides troubleshooting tips and contact information for technical
support.

Operation

Dual Relay Contact Output Signal

The sensor has a dual relay contact output signal. To reset a
latched relay, follow these steps:

Step 1: Access the relay settings in the software menus.
Step 2: Select the latched relay that needs to be reset.
Step 3: Follow the instructions on the screen to reset the
relay.

Diagnostics and Maintenance

Diagnostic Messages

The sensor provides diagnostic messages to help identify any
issues. Refer to the user manual for a list of diagnostic messages
and their meanings.

Maintenance

To ensure proper functioning of the sensor, perform regular
maintenance tasks. These include:

Introduction to maintenance
Sentro Vortex – Check
Sentro Vortex Sensing Probe – Clean
Sentro Vortex Output Signal – Check
Sentro Vortex Sensing Probe – Calibrate

Disposal

When disposing of the sensor, follow the proper disposal
procedures outlined in the user manual. This ensures compliance
with environmental regulations.

Maintenance Records

Maintain records of all maintenance activities performed on the
sensor. This helps track the sensor’s performance and identify any
recurring issues.

Maintenance and Calibration Log

Keep a log of maintenance and calibration activities performed
on the sensor. This log should include details such as dates, tasks
performed, and any adjustments made.

FAQ

Q: What is the application of the TX5951 Sentro Vortex Air Flow

Sensor?

A: The sensor is used for fixed point gas flow velocity
measurement in pipes, ducts, and open roadways. It is also suitable
for ventilation, cooling systems, and process condition monitoring
in heavy-duty industrial applications and hazardous areas.

Q: What are the available product options for the TX5951 Sentro

Vortex Air Flow Sensor?

A: The sensor is available in three options: Rear Projecting
Sensor, Side Projecting Sensor, and Remote Mounted Sensor. Each
option is designed for specific installation requirements.

Q: How can I reset a latched relay in the sensor?

A: To reset a latched relay, access the relay settings in the
software menus, select the latched relay that needs to be reset,
and follow the instructions on the screen.

TX5951 User Manual

TX5951 Sentro Vortex Air Flow Sensor Contents

1. Product Overview

4

1.1 Operating Features

5

1.2 Application

5

1.3 Product Options

6

1.3.1 Rear Projecting Sensor

6

1.3.2 Side Projecting Sensor

6

1.3.3 Remote Mounted Sensor 7

1.4 Dimensions

8

1.4.1 Rear Projecting Sensor

8

1.4.2 Side Projecting Sensor

10

1.4.3 Remote Mounted Sensor 11

1.5 Technical Information

12

1.6 Electrical Details

14

1.7 Sentro Module

15

2. Certification

16

3. Installation

18

3.1 Tools and Test

Equipment Required

18

3.2 Siting Recommendations 18

3.2.1 Fitting in Pipes and Ducts 18

3.2.2 Fitting in Roadways and

Tunnels

20

3.3 Orientation of the Housing 22

3.4 Connections

22

3.4.1 0.4 to 2 V Analogue Output

Signal

22

3.4.2 4 to 20 mA Analogue Output

Signal

22

3.4.3 Dual Relay Contact Output

Signal

22

3.4.4 RS485 Data Output Signal 22

3.4.5 Earthing

23

4. Setup and Calibration

24

4.1 Controls and Indicators

24

4.2 Software Menus

26

4.3 Navigation

27

4.4 Power-up

28

4.5 Main Menu

29

4.5.1 Sentro Setup

30

4.5.2 Output Setup

35

4.5.3 Module Setup

44

4.5.4 Exit

54

4.6 Support

54

5. Operation

55

5.1 Dual Relay Contact Output

Signal

55

5.1.1 To Reset a Latched Relay 55

6. Diagnostics and

Maintenance

57

6.1 Diagnostic Messages

57

6.2 Maintenance

58

6.2.1 Introduction

58

6.2.2 Sentro Vortex – Check

59

6.2.3 Sentro Vortex Sensing

Probe – Clean

59

6.2.4 Sentro Vortex Output

Signal – Check

60

6.2.5 Sentro Vortex Sensing

Probe – Calibrate

60

6.3 Disposal

61

6.4 Maintenance Records

61

6.5 Maintenance and

Calibration Log

62

Disclaimers

63

Trademarks

63

Contact Details

63

Document History

63

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1. Product Overview

TX5951 . . . 82 TX5951 . . . 83 TX5951 . . . 84

Sentro Vortex gas flow sensor with rear projecting sensing probe for fitting into pipe lines and ducts. Available with 11/2″ BSP mounting bush or specific flange plate fitting.
Sentro Vortex gas flow sensor with side projecting sensing probe for open flow monitoring in tunnels, roadways and process systems.
Sentro Vortex gas flow sensor with remote mounted sensor. For use where fitting space is limited or is difficult to access.

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TX5951 User Manual
1.1 Operating Features
· High stability gas and air flow monitoring · Vortex monitoring principle with no moving components · Analogue output signal linearly proportional to flow velocity · Integral LCD screen with large easy to read characters and back light
illumination · Programmable function and display configuration · Choice of output signals:
– 0.4 to 2 V – 4 to 20 mA – Dual relay contacts – can be specified normally open (NO) or normally
closed (NC) – RS485 data output · Rangeable flow velocity from 0.5 m/sec to 30 m/sec · Integral LED indicators for General and High alarms
1.2 Application
Fixed point gas flow velocity measurement in pipes, ducts and open roadways. Ventilation, cooling systems and process condition monitoring in heavy duty industrial applications and hazardous areas. Analogue or digital output data linearly proportional to gas flow velocity. System supply 24 V dc.

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1.3 Product Options

1.3.1 Rear Projecting Sensor

Rear Projecting Sensor With 50 mm ANSI Mounting Flange

Output

Order Reference

Mining Ex ia

General Purpose

0.4 to 2 V output

TX5951.01.11.82.21

N/A

4 to 20 mA output

TX5951.01.12.82.21

TX5951.03.12.82.21

Dual relay output NO

TX5951.01.14NO.82.21 TX5951.03.14NO.82.21

Dual relay output NC

TX5951.01.14NC.82.21 TX5951.03.14NC.82.21

RS485 output

TX5951.01.15.82.21

TX5951.03.15.82.21

Please specify non-standard process fittings when ordering.

Rear Projecting Sensor With 11/2″ BSP Mounting Bush

Output

Order Reference

Mining Ex ia

General Purpose

0.4 to 2 V output

TX5951.01.11.82.22

N/A

4 to 20 mA output

TX5951.01.12.82.22

TX5951.03.12.82.22

Dual relay output NO

TX5951.01.14NO.82.22 TX5951.03.14NO.82.22

Dual relay output NC

TX5951.01.14NC.82.22 TX5951.03.14NC.82.22

RS485 output

TX5951.01.15.82.22

TX5951.03.15.82.22

1.3.2 Side Projecting Sensor

Side Projecting Sensor

Output

Order Reference

Mining Ex ia

General Purpose

0.4 to 2 V output

TX5951.01.11.83

N/A

4 to 20 mA output

TX5951.01.12.83

TX5951.03.12.83

Dual relay output NO

TX5951.01.14NO.83

TX5951.03.14NO.83

Dual relay output NC

TX5951.01.14NC.83

TX5951.03.14NC.83

RS485 output

TX5951.01.15.83

TX5951.03.15.83

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TX5951 User Manual

1.3.3 Remote Mounted Sensor

Remote Mounted Sensor With 50 mm ANSI Mounting Flange

Output

Order Reference

Mining Ex ia

General Purpose

0.4 to 2 V output

TX5951.01.11.84.21

N/A

4 to 20 mA output

TX5951.01.12.84.21

TX5951.03.12.84.21

Dual relay output NO

TX5951.01.14NO.84.21 TX5951.03.14NO.84.21

Dual relay output NC

TX5951.01.14NC.84.21 TX5951.03.14NC.84.21

RS485 output

TX5951.01.15.84.21

TX5951.03.15.84.21

Please specify cable length and non-standard process fittings when ordering.

Remote Mounted Sensor With 11/2″ BSP Mounting Bush

Output

Order Reference

Mining Ex ia

General Purpose

0.4 to 2 V output

TX5951.01.11.84.22

N/A

4 to 20 mA output

TX5951.01.12.84.22

TX5951.03.12.84.22

Dual relay output NO

TX5951.01.14NO.84.22 TX5951.03.14NO.84.22

Dual relay output NC

TX5951.01.14NC.84.22 TX5951.03.14NC.84.22

RS485 output

TX5951.01.15.84.22

Please specify cable length when ordering.

TX5951.03.15.84.22

Checkpoint
Please specify the probe length required when ordering your Sentro Vortex. Probes available from 160 mm to 2000 mm insertion length in 100 mm increments.

Checkpoint The 0.4 to 2 V output version of Sentro Vortex is only available as Group 1.

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1.4 Dimensions 1.4.1 Rear Projecting Sensor

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1.4.2 Side Projecting Sensor

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1.4.3 Remote Mounted Sensor

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1.5 Technical Information

Flow measuring range Accuracy Linearity Ambient temperature limits Sensor temperature limit Humidity Protection classification Process media Housing material Sensor material Flexible cable (remote sensor) Maximum static pressure Process fittings
Cable entry
Nett weight
Information display Vibration limits
Impact limits Output Signals

Rangeable from 0.5 to 5 m/s up to 0.5 to 30 m/s +/- 2% within 12.5° rotation of flow axis +/- 1% -15°C to +50°C -20°C to +150°C 0 to 95% non-condensing Dust and waterproof to IP65 Gas, air, steam or saturated vapour Reinforced polymer Stainless steel – grade 316 PVC coated armoured flexible conduit
20 bar · 11/2″ BSP mounting bush · 50 mm ANSI mounting flange · Rear projecting sensing probe – 2 x M20 · Side projecting sensing probe – 1 x M20 · Remote mounted sensing probe – 1 x 2M20 · Rear projecting sensing probe – 1.5 kg · Side projecting sensing probe – 1.5 kg · Remote mounted sensing probe – 2.5 kg 128 x 64 dot graphic backlit LCD screen Vibration limits (EN 60079-29-1): · 10 to 30 Hz – 1.00 mm total excursion · 31 to 150 Hz – 19.6 m/s2 acceleration peak 20 joules (housing) · 0.4 to 2 V · 4 to 20 mA · Dual relay contact · RS485 data

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Alarms Menu configuration
Fault indication

TX5951 User Manual
Programmable General and High alarm levels with LED indicators · Security code protection · Scale factor selection (linear/volume/time) · Setpoint level and mode adjustment · Data output protocol configuration · Flow units selection · Duty display text entry · Loss of communications · Sensing module absent · Sensor over-range

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1.6 Electrical Details
0.4 to 2 V Output Signal Supply voltage Max line voltage Supply current
4 to 20 mA Output Signal Supply voltage
Max line voltage
Supply current
Dual Relay Output Signal Supply voltage
Contact rating
Supply current
RS485 Data Output Supply voltage
Data protocol Supply current

Group 1 Group 1

11 to 14.4 V dc 10 R at 12 V dc 40 mA

Group 1 General Purpose Group 1 General Purpose

10 to 14 V dc 18 to 28 V 220 R at 12 V dc 500 R at 24 V dc 40 mA

Group 1 General Purpose Group 1 General Purpose

10 to 14 V dc 20 to 28 V 5 A at 230 V dc 5 A at 230 V dc 45 mA

Group 1 General Purpose

10 to 14 V dc 14 to 28 V dc RS485 Modbus 40 mA

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TX5951 User Manual
1.7 Sentro Module
Plug-in pre-calibrated sensing module with standardised output data.
· The sensing module stores all the necessary data about its type identification, sensing range and specific calibration. This data is automatically recognised by Sentro Vortex when the sensing module is loaded into the module bay
· The sensing modules are pre-calibrated so they can be replaced at any time by a replacement sensing module
· The sensing module will identify itself when plugged into the sensor housing and auto configuration will take place
· All Sentro sensing modules have two output alarm signals for General alarm and High alarm. Default values are entered during manufacture and these can be changed to preferred values
· The two alarm signals can be set to illuminate built-in flashing LED indicators
· The two alarm signals can be set to operate the General alarm and High alarm relays on the Contact Output version of Sentro Vortex

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2. Certification
Pending

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TX5951 User Manual

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TX5951-UM-EN-01f 17

3. Installation
3.1 Tools and Test Equipment Required
No special tools are required: · Metric spanner set · Metric hexagon key set · Standard electrical test meter
Checkpoint Where the process cannot be interrupted to remove the Sentro Vortex from a pipeline, an isolating ball valve may be fitted to the process connection at the installation. This is also useful in installations that have a high level of contamination or moisture in the gas stream. Build up of debris or water vapour will cause deterioration of the output signal.
3.2 Siting Recommendations
3.2.1 Fitting in Pipes and Ducts
To attain the best accuracy of response, select a position that is at least twenty pipe diameters down-stream from bends or obstructions, and approximately five pipe diameters from down-stream intrusions.
Similarly, the sensor should be mounted at least fifteen pipe diameters from a pipe reducer and fifty pipe diameters from valves.
If this is not possible then the installation of a standard flow straightener will improve performance.

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TX5951 User Manual
Fit a corresponding threaded boss or flange at the monitoring point and install the sensor, ensuring a gas tight seal.
Checkpoint High pressure versions, above 2 bar, will be supplied with a welded bush or flange and will require dedicated process fittings.
Release the clamping ring on the mounting bush or flange.
The centre of the flow path of the sensing head should be positioned as shown.
Checkpoint Ensure that pressurised systems have been completely vented before installation or removal of the sensor.
Position the sensing head with the smaller opening facing the flow, within a rotational deviation of no more than 12.5° from the axis of flow.
Tighten the clamping ring with moderate force.
Avoid fitting the sensor at low points in pipework structures to prevent the sensing head from being affected by large accumulations of moisture.

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3.2.2 Fitting in Roadways and Tunnels
To attain the best accuracy of response, select a position away from adjacent structures with a clearance of 200 mm.
The version with a side projecting sensor can be mounted on to a suitable support using the mounting holes.
Alternatively use a standard mounting bush or flange for fitting to a suitable bracket.

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TX5951 User Manual
3.3 Orientation of the Housing
The housing of the Sentro Vortex can be turned to any position about the axis of the sensing probe and locked in position for the preferred mounting attitude or cable routing access.
Release the locking ring by turning anticlockwise as far as it will go.
Rotate the sensing probe or the sensor housing to the desired position.
Checkpoint Rotation is limited to approximately 300° so do not force the housing beyond the limit stops.

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3.4 Connections
TX5951-UM-EN-01f 21

3.4.1 0.4 to 2 V Analogue Output Signal
The output signal from terminals 1 and 2 is a low impedance two-wire voltage output.

3.4.2 4 to 20 mA Analogue Output Signal
The output signal from terminals 1 and 2 is a conventional 4 to 20 mA two wire current regulated signal loop.
3.4.3 Dual Relay Contact Output Signal
Dual independent output contacts for remote signalling and control. Setpoint values for General and High alarms may be adjusted to preference.
3.4.4 RS485 Data Output Signal
RS485 serial data output with analogue signal intelligence.
Use in conjunction with a PC for data display and setpoint alarm warnings.

Up to 32 sensors acting as slaves can

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TX5951 User Manual

communicate with the master unit on a single data cable.

The address code of the sensor is marked on the duty label of the sensor.

Physical layer:

RS485

Protocol:

Trolex proprietary

Connection mode: Modbus

Number of points: 32

Maximum distance: 1,000 m

Recommended cable (specified in BS5308 Part 1) for locally powered sensors: · 1 twisted pair · 0.5 mm2 · Overall screen

Recommended cable for sensors that are powered through the data cable: · 2 twisted pair · 0.5 mm2 · Individual/overall screen

3.4.5 Earthing
Take care to ensure correct earthing procedures are followed during installation.

Because of its high response sensitivity, the Sentro Vortex can be affected by earth borne electrical interference, where associated metal structures have not been properly earthed.

TX5951-UM-EN-01f 23

4. Setup and Calibration
4.1 Controls and Indicators

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TX5951-UM-EN-01f 25

4.2 Software Menus

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4.3 Navigation

TX5951 User Manual

Checkpoint To use the Sentro Vortex software and navigate between menus you must press the Setup Buttons: Next is the Left button – L Select/Change is the Right button – R. The use of these buttons is abbreviated to L and R throughout this User Manual.
To access the L (Next) and R (Select/Change) buttons you need to remove the front cover. Use a cross head screwdriver to remove the four screws securing the front cover and move it out of the way.

Checkpoint
The Sentro Vortex is factory configured with the Security Code unset. If a Security Code has been subsequently set it will need to be successfully entered before the menus can be accessed.

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TX5951-UM-EN-01f 27

4.4 Power-up
When the Sentro Vortex is powered-up the Start-up Screen will appear. The Start-up Screen displays basic information about the system including the software version, driver version and output type.
Power On

After five seconds the Main Display will appear. The Main Display displays the current airflow.

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TX5951 User Manual
4.5 Main Menu
From the Main Display press and hold L, this will bring up the Main Menu.
From the Main Menu the operating parameters of the Sentro Vortex may be set up according to preference. The available menus are as follows:
· Sentro Setup · Output Setup · Module Setup · Exit
Checkpoint You can safely remove the front cover of the Sentro Vortex for setup in a hazardous area, even with the power applied.
Checkpoint The Sentro Vortex will automatically return to the Main Display if no keys are pressed within 30 seconds.

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TX5951-UM-EN-01f 29

4.5.1 Sentro Setup
This enables you to view and carry-out setup of the Sentro Vortex characteristics.
From the Main Menu press L, navigate to Sentro Setup and press R to enter the Sentro Setup Menu.
The available menus are as follows:
· System Information · Display Setup · Alert Setup · Set Security Code · Exit
4.5.1.1 System Information This displays basic information about the system including the main software version, system date, system time, driver versions and output formats.
From the Sentro Setup Menu press L, navigate to the System Information and press R to display the System Information.

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4.5.1.2 Display Setup Menu This enables you to carry-out the setup of the Display.
From the Sentro Setup Menu press L, navigate to the Display Setup and press R to enter the Display Setup Menu.
The available menus are as follows:
· Set Backlight · Adjust Contrast · Exit
Set Backlight The screen backlight illumination may be set to On or Off, to reduce power consumption.
From the Display Setup Menu press L, navigate to Set Backlight and press R to enter the Set Backlight Menu.
From the Set Backlight Menu press R to set the Backlight Illumination to On or Off as required.
Press L to move to Save or Cancel as required. Press R to confirm the selection and return to the Display Setup Menu.

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Adjust Contrast TX5951-UM-EN-01f 31

The contrast of the screen may be set for best visual appearance.
From the Display Setup Menu press L, navigate to Adjust Contrast and press R to enter the Adjust Contrast Menu.
Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease the contrast as required.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Display Setup Menu.
Exit From the Display Setup Menu press L, navigate to Exit, press R to confirm the selection and return to the Sentro Setup Menu.
4.5.1.3 Alert Setup Menu This enables you to carry-out the setup of the Alerts.
From the Sentro Setup Menu press L, navigate to Alert Setup and press R to enter the Alert Setup Menu.
The available menus are as follows:
· Visual Alert · Confidence Alarm · Exit

Visual Alert

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TX5951 User Manual
The integral General and High visual alarms can be set to On or Off.
From the Alert Setup Menu press L, navigate to Visual Alert and press R to enter the Visual Alert Menu.
From the Visual Alert Menu press R to set the Visual Alert to On or Off as required.
Press L and navigate to Save or Cancel as required. Press R to confirm the selection and return to the Alert Setup Menu.
Confidence Alarm The Confidence Alarm flash can be set to On or Off. For details of the Confidence Alert refer to Section 5.
From the Alert Setup Menu press L, navigate to Confidence Alarm and press R to enter the Confidence Alarm Menu.
From the Confidence Alarm Menu press R to set the Confidence Alert to On or Off as required.
Press L to move to Save or Cancel as required.
Press R to confirm the selection and return to the Alert Setup Menu.

Exit

TX5951-UM-EN-01f 33

From the Alert Setup Menu press L, navigate to Exit and press R to confirm the selection and return to the Sentro Setup Menu.
4.5.1.4 Set Security Code This enables you to enter a Security Code and prevent unauthorised access to the Main Menu.
From the Sentro Setup Menu press L, navigate to Set Security Code and press R to enter the Set Security Code menu.
From Set Security Code press R to increment the first digit. Press L to confirm the selection and move to the next digit.
Repeat for all four digits. Press L and navigate to Save or Cancel as required and Press R to confirm the selection.
4.5.1.5 Exit From the Sentro Setup Menu press L, navigate to Exit, press R to confirm the selection and return to the Main Menu.

4.5.2 Output Setup

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TX5951 User Manual
This enables you to view information on and setup characteristics of the Sentro Vortex output signal.
Checkpoint The output signal type of the Sentro Vortex is configured during manufacture. The output signal will be one of four types: · 0.4 to 2 V analogue output signal · 4 to 20 mA analogue output signal · Dual relay output signal · RS485 digital output signal Each of the four signal types has a unique set of menus that enable you to view and configure characteristics of the output signal. All four sets of menus are described in the following sections.
From the Main Menu press L, navigate to Output Setup and press R to enter the Output Setup Menu.
4.5.2.1 0.4 to 2 V Analogue Output Signal The available menus are as follows: · Output Information · Trim Output Zero · Trim Output Span · Reset Output · Exit
Output Information
TX5951-UM-EN-01f 35

This displays the factory set output signal type for the Sentro Vortex.
From the Output Setup Menu press L, navigate to Output Information and press R to display the Output Information.
Trim Output Zero The level of the transmitted output signal, when the Sentro Vortex is measuring a zero gas flow can be trimmed or offset. From the Output Setup Menu press L, navigate to Trim Output Zero and press R to enter the Trim Output Zero Menu.
Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease the Output Zero as required. Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.

Trim Output Span

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TX5951 User Manual
The level of the transmitted output signal, when the Sentro Vortex is measuring a given gas flow can be trimmed or offset.
From the Output Setup Menu press L, navigate to Trim Output Span and press R to enter the Trim Output Span Menu.

Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease the Output Span as required.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.
Reset Output This enables you to reset the Zero and Span output signal levels back to the default factory settings.
From the Output Setup Menu press L, navigate to Reset Output and press R to enter the Reset Output menu.

Press L to navigate to Restore Defaults and press R to confirm the selection.

Exit

TX5951-UM-EN-01f 37

From the Output Setup Menu press L, navigate to Exit, press R to confirm the selection and return to the Main Menu.
4.5.2.2 4 to 20 mA Analogue Output Signal
The available menus are as follows: · Output Information · Trim Output Zero · Trim Output Span · Reset Output · Exit
Output Information This displays the factory set output signal type for the Sentro Vortex.

From the Output Setup Menu press L, navigate to Output Information and press R to display the Output Information.

Trim Output Zero
The level of the transmitted output signal, when the Sentro Vortex is measuring a zero gas flow can be trimmed or offset.

From the Output Setup Menu press L, navigate to Trim Output Zero and press R to

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enter the Trim Output Zero Menu.
Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease the Output Zero as required. Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu. Trim Output Span The level of the transmitted output signal, when the Sentro Vortex is measuring a given gas flow can be trimmed or offset. From the Output Setup Menu press L, navigate to Trim Output Span and press R to enter the Trim Output Span Menu.
Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease the Output Span as required. Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.
Reset Output This enables you to reset the Zero and
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Span output signal levels back to the default factory settings. From the Output Setup Menu press L, navigate to Reset Output and press R to enter the Reset Output menu.
Press L to navigate to Restore Defaults and press R to confirm the selection.

Exit From the Output Setup Menu press L, navigate to Exit, press R to confirm the selection and return to the Main Menu.
4.5.2.3 Dual Relay Contact Output Signal The available menus are as follows: · Set Relay 1 Mode · Set Relay 2 Mode · Exit
Set Relay 1 Mode and Set Relay 2 Mode This enables you to setup the operating function of each relay. Each Relay can be independently setup.

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Checkpoint Set Relay 1 Mode and Set Relay 2 Mode are configured in exactly the same way as each other.
Checkpoint A relay can be configured to Latch or Automatically Reset according to preference.
From the Output Setup Menu press L, navigate to Set Relay 1 Mode or Set Relay 2 Mode and press R to enter Set Relay 1 Mode or Set Relay 2 Mode.
Press R to change from Latch and Auto. Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.
Checkpoint A relay configured to Latch cannot be reset until the initiating signal has receded.
Exit From Set Relay 1 Mode or Set Relay 2 Mode press L, navigate to Exit and press R to confirm the selection and return to the Output Setup Menu.
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4.5.2.4 RS485 Data Output Signal The available menus are as follows: · Modbus Address · Baud Rate · TxOn Delay · TxOff Delay · Exit
Modbus Address The Modbus Address can be set between 1 and 255 as required.
From the Output Setup Menu press L, navigate to Modbus Address and press R to enter the Modbus Address Menu.
Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease the Modbus Address as required.
Press L and navigate to select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.

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Baud Rate The Baud Rate can be set to 300/600/1200/2 400/4800/9600/14400/19200/28800/38400/ 57600/115200 as required.
From the Output Setup Menu press L, navigate to Baud Rate and press R to enter the Set Baud Rate Menu.
Press R to navigate to the required Baud Rate, press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.
TxOn Delay and TxOff Delay
Checkpoint TxOn Delay and TxOff Delay are configured in exactly the same way as each other.
The TxOn Delay and TxOff Delay can be set between 0 and 99 ms.
From the Output Setup Menu press L, navigate to TxOn Delay or TxOff Delay as required and Press R to enter the TxOn Delay or TxOff Delay Menu as required.

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Press L to navigate to Increase or Decrease as required. Press R to Increase or Decrease as required. Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Output Setup Menu.
Exit From the Output Setup Menu press L, navigate to Exit, press R to confirm the selection and return to the Main Menu.
4.5.3 Module Setup
This enables you to setup the functional values of the Sentro Module fitted to Sentro Vortex.
From the Main Menu press L, navigate to Module Setup and press R to enter the Module Setup Menu.

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The available menus are as follows: · Scaling · Setpoint 1 · Setpoint 2 · Configuration · Exit
4.5.3.1 Scaling This enables you to carry-out a setup of the Scaling functions.
From the Module Setup Menu press L, navigate to Scaling and press R to enter the Scaling Setup Menu.
The available menus are as follows: · Sig. Figures · Lower Range · Upper Range · Units · Scale Factor · Exit

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Significant Figures The position of the decimal point can be shifted along the displayed number to the best Significant Figures to suit the particular sensor signal being monitored and its optimum measuring range. This can be used to eliminate digit flicker and redundant decimal places.
From the Scaling Setup Menu press L, navigate to Sig. Figures and press R to enter the Significant Figures Menu.
Press R to move the decimal point to the preferred position to give the number of decimal places required.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Scaling Setup Menu.
Lower Range and Upper Range Set the desired Lower Range and Upper Range of the displayed reading for a given magnitude of input signal. This can be any numeric value and the polarity can be any negative value through to any positive value.
Checkpoint Enter the preferred Significant Figures before setting the Lower Range and Upper Range values.

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From the Scaling Setup Menu press L, navigate to Lower Range or Upper Range as required and press R to enter the Lower Range or Upper Range Menu as required.
Press R to change the minus to a plus. Press L to move to the first digit, press R to increment the digit and press L to move to the next digit.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Scaling Setup Menu.
Units The displayed Units of gas flow can be changed according to preference. Two types of Units can be displayed: · Flow Velocity Values – independent of
the cross-sectional area of the flow path · Volumetric Flow Values – relative to the
cross-sectional areas of the flow path
The default Units displayed are m/s (metre/ second). The Units that can be displayed are as follows:
Flow Velocity Values · m/s – metres per second · ft/s – feet per second Volumetric Flow Values · m3/s – cubic metres per second · m3/h – cubic metres per hour · ft3/s – cubic feet per second · ft3/h – cubic feet per hour
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From the Scaling Setup Menu press L, navigate to Units and press R to enter the Units Menu.

Press R to change the displayed Units to the preferred Units to be displayed.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Scaling Setup Menu.
Scale Factor If one of the four Volumetric Flow Value units is selected, it will be necessary to enter a multiplication factor relating to the crosssectional area of the flow path.
Checkpoint The scale Factor is user rangeable between 1.0000 and 9.9999.
From the Scaling Setup Menu press L, navigate to Scale Factor and press R to enter the Scale Factor Menu.

Press R to increment the first digit, press L to move to the next digit, press R to increment the digit and repeat for all digits as required.

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Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Scale Factor Setup Menu.
Exit From the Scaling Setup Menu press L, navigate to Exit and press R to Exit the Scaling Setup Menu and return to the Module Setup Menu.
4.5.3.2 Setpoint 1 and Setpoint 2 This enables you to carry-out a setup of Setpoint 1 and Setpoint 2.
Checkpoint Setpoint 1 and Setpoint 2 are configured in exactly the same way.
From the Module Setup Menu press L, navigate to Setpoint 1 or Setpoint 2 and press R to enter the Setpoint 1 or Setpoint 2 Setup Menu.
The available menus are as follows: · Activation · Level · Exit

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Activation The Activation mode of Setpoint 1 and Setpoint 2 can be configured to Over or Under as required.
From the Setpoint 1 or Setpoint 2 Setup Menu press L, navigate to Activation and press R.
From the Activation Menu press R to set Activation to Over or Under as required.
Press L and navigate to Save or Cancel as required. Press R to confirm the selection and return to the Setpoint 1 or Setpoint 2 Setup Menu.
Level The Level at which Setpoint 1 and Setpoint 2 are activated can be configured.
From the Setpoint 1 or Setpoint 2 Setup Menu press L, navigate to Level and press R.

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Press R to increment the digits as required. Press L to move to the next digit. Repeat for all digits and press L.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Setpoint 1 or Setpoint 2 Setup Menu.
Exit From the Setpoint 1 or Setpoint 2 Setup Menu press L, navigate to Exit, press R to confirm the selection and return to the Module Setup Menu.
4.5.3.3 Configuration This enables you to setup the Configuration of the sensing module.
From the Module Setup Menu press L, navigate to Configuration and press R to enter the Configuration Setup Menu.
The available menus are as follows: · Set Duty Text · Set Update · Exit

Set Duty Text

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The Duty Text can be set according to preference, by default it reads Airflow.
From the Configuration Setup Menu press L, navigate to Set Duty Text and press R to enter the Set Duty Text Menu.
From the Set Duty Text Menu press R to increment a character as required and press L to move to the next character.
Checkpoint The characters are in the sequence A to Z, 0 to 9 and a Blank Space.
Checkpoint If you wish to clear all text press L, navigate to Clear Text and press R to clear all Duty Text as required.
Checkpoint The maximum number of characters that can be entered in the Duty Text field is 16.
Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Configuration Setup Menu.

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Set Update The value of the analogue input signal is averaged and up-dated at periodic intervals. You can configure the up-date period in the Set Update Menu.
Checkpoint A low Set Update setting will give rapid reaction to the input signal and a higher setting may be entered where damping of a fluctuating input is necessary, or simply as a means of applying a delay to the input. This is particularly useful in electrically noisy environments.
From the Configuration Setup Menu press L, navigate to Set Update and press R to enter the Set Update Menu.
Press L to navigate to Increase or Decrease as required. The field is configurable between 0 and 99 seconds.
Press R to Increase or Decrease as required. Press L and select Save or Cancel as required. Press R to confirm the selection and return to the Configuration Setup Menu.
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Exit From the Configuration Setup Menu press L and navigate to Exit. Press R to confirm the selection and return to the Module Setup Menu.
4.5.3.4 Exit From the Module Setup Menu press L, navigate to Exit and press R to confirm the selection and return to the Main Menu.
4.5.4 Exit
From the Main Menu press L, navigate to Exit and press R to confirm the selection and return to the Main Display.
4.6 Support
If you need technical support to operate this product, or would like details of our after sales technical support packages, please contact your local Trolex service agent or service@trolex.com.

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5. Operation
In normal operation the Sentro Vortex will display the gas flow rate on the LCD screen in the preferred Units of measurement, this is the Main Display. If the Confidence Alert has been enabled it will flash every 15 seconds.
5.1 Dual Relay Contact Output Signal
On the Dual Relay Contact Output version of Sentro Vortex the functional mode and status of the relays can be displayed at any time. Press L and the relay state will be displayed.
5.1.1 To Reset a Latched Relay
If a relay is latched during operation, reset it as follows. From the Main Display press R to open the Unlatch Relays menu.
The available menus are as follows: · Unlatch Relay 1 · Unlatch Relay 2 · Go to Main Menu · Exit
5.1.1.1 Unlatch Relay 1 and Unlatch Relay 2
Checkpoint Relay 1 and Relay 2 are unlatched in exactly the same way.
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From the Unlatch Relays Menu press L, navigate to Unlatch Relay 1 or Unlatch Relay 2 and press R.
Press L to navigate to Unlatch Relay 1 or Unlatch Relay 2 as required and press R unlatch the relay.
Press L to navigate to Unlatch Relay 1 or Unlatch Relay 2 and press R to confirm the selection.
5.1.1.2 Go to Main Menu From the Unlatch Relays Menu press L, navigate to Go to Main Menu, press R and return to the Main Menu.
5.1.1.3 Exit From the Unlatch Relays Menu press L, navigate to Exit, press R and return to the Main Display.
Checkpoint A relay configured to Latch cannot be reset until the initiating signal has receded.

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6. Diagnostics and Maintenance
6.1 Diagnostic Messages
Sensor Over-range If the Sentro Vortex goes over-range then the following message will be seen on the LCD screen.
Loss of Signal From the Sensor If there is a loss of signal from the sensing module to the Sentro Vortex an error message will be shown.
Module Not Fitted If the sensing module has been removed from the Sentro Vortex and is out for more than 10 seconds, an error message will be shown.

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6.2 Maintenance
6.2.1 Introduction
To keep your Sentro Vortex in the best possible condition and minimise downtime, Trolex strongly recommends that you carry out regular planned preventative maintenance and keep records of the maintenance carried out. The planned preventative maintenance for Sentro Vortex consists of a number of tasks carried out at regular intervals on a cumulative basis, ie. at 12 months do the 1 month task, the 3 month task, the 6 month task AND the 12 month task. These tasks are listed in the maintenance schedule below:

Equipment Name
Sentro Vortex Sentro Vortex Sensing Probe Sentro Vortex Output Signal Sentro Vortex Sensing Probe

Task Type
Check Clean Check Function Test

Task Number
6.2.2 6.2.3 6.2.4 6.2.5

Interval
1 month 3 months 6 months 12 months

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6.2.2 Sentro Vortex – Check
1. Check the exterior of the Sentro Vortex for cracks, penetration, water ingress and other signs of damage.
2. Check that the front cover is free from damage and is securely fitted.
3. Check the LCD screen is clear and free from damage.
4. If any part of the Sentro Vortex shows any signs of damage, deformation or missing parts, contact your local Trolex service agent or service@trolex.com for advice on repair or replacement.
5. After the completion of all maintenance, update the maintenance records.
6.2.3 Sentro Vortex Sensing Probe – Clean
1. Remove the sensor and assess its condition.
2. Clean the sensing head with a soft brush or cloth if necessary.
Checkpoint Do not use sharp tools as this may cause damage to the ultrasound transducers and the transverse strut.
3. After the completion of all maintenance, update the maintenance records.

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6.2.4 Sentro Vortex Output Signal – Check
1. Using a test meter check that the value of the output signal agrees with the value of the display reading.
2. After the completion of all maintenance, update the maintenance records.

6.2.5 Sentro Vortex Sensing Probe – Function Test
1. Under normal circumstances, the calibration of the sensing probe will not change significantly.
2. Check the accuracy by comparing the display reading with a reference value of flow velocity.
OR 2. Alternatively the Sentro Vortex can
be removed and returned to your local Trolex service agent, for checking and calibration across the full operating spectrum. Contact service@trolex.com for further information. 3. After the completion of all maintenance, update the maintenance records.

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6.3 Disposal
Part of the ethos of Trolex is sustainable design. Sentro Vortex contains materials that can be recovered, recycled and reused. At the end of its useful life ensure that the Sentro Vortex is recycled in accordance with local laws and bylaws for the geographic area where it is located. The end of its useful life is to be determined by the owner/operator of the equipment and not Trolex. Ensure that the Sentro Vortex is recycled by licenced waste contractors with the appropriate licences for handling metal, plastic and electronic waste in the geographic area where the Sentro Vortex is located.
Checkpoint Consult your local Trolex service agent or the Trolex Product Support Department if you require assistance with disposal: service@trolex.com
6.4 Maintenance Records
Implement a planned preventative maintenance process and keep good maintenance records.
Consult your local Trolex service agent or the Trolex Product Support Department: service@trolex.com for help in implementing a planned preventative maintenance process.
The `Maintenance Log’ gives an example of a typical maintenance record system.
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6.5 Maintenance and Calibration Log

Order Reference: TX5951 Serial Number: Location:

Date

Scheduled Check

Fault

Date Purchased: Flow Rate:

Recalibrate

Return to Trolex

Comments

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Disclaimers
The information provided in this document contains general descriptions and technical characteristics of the performance of the product. It is not intended as a substitute for and is not to be used for determining suitability or reliability of this product for specific user applications. It is the duty of any user or installer to perform the appropriate and complete risk analysis, evaluation and testing of the products with respect to the relevant specific application or use. Trolex shall not be responsible or liable for misuse of the information contained herein. If you have any suggestions for improvements or amendments, or find errors in this publication, please notify us at marketing@trolex.com.
No part of this document may be reproduced in any form or by any means, electronic or mechanical, including photocopying, without express written permission of Trolex.
All pertinent state, regional, and local safety regulations must be observed when installing and using this product. For reasons of safety and to help ensure compliance with documented system data, only Trolex or its affiliates should perform repairs to components.
When devices are used for applications with technical safety requirements, the relevant instructions must be followed.
Trademarks
© 2014 Trolex® Limited. Trolex is a registered trademark of Trolex Limited. The use of all trademarks in this document is acknowledged.
Document History
Issue 01 30 September 2014 Original publication of this document – 6th draft
Contact Details
Trolex Ltd, Newby Road, Hazel Grove, Stockport, Cheshire, SK7 5DY, UK +44 (0) 161 483 1435 sales@trolex.com

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