TX5921 Vortex Gas Flow Detector Transmitter

Product Information

Specifications

• Flow Measuring Range: Rangeable from 0.5 to 5 m/s up to 0.5 to
  30 m/s linear flow velocity

• Accuracy:

• Linearity:

• Housing Temperature:

• Sensor Temperature:

• Humidity: 0 to 95% non condensing

• Protection Classification: Dust and waterproof to IP66

• Housing Material: Stainless steel reinforced polymide 6

• Sensor Material: Stainless steel (PTFE coated versions
  available to specification)

• Sensor Static Pressure: 20 bar (limited to 2 bar max with
  standard mounting accessories)

• Process Fitting: Wall mounting

• Cable Entry: 2 x M20

• Electrical Connections: 4 mm barrier/clamp terminals

• Nett Weight:

• Information Display: 17 character dot matrix alpha numeric
  LCD

• Operation Menu System:

• Keycode Protection: Microprocessor controlled with non-volatile
  data retention

• Master Reset:

• Text language: English, German, French, Spanish

Product Usage Instructions

1. Principal Operating Features

The TX9130 series insertion vortex gas flow sensor has various
operating features including signal offset, elevated zero, and a
protective coating for specific applications.

2. Application

The TX9130 series is suitable for flow velocity measurement or
volumetric measurement of air, gases, and vapors in pipes, ducts,
and open areas. It is available in three models:

• TX5921: Suitable for general flow velocity measurement in
  pipes, ducts, and open areas.

• TX5922: Designed with flange fittings for pipelines and ducts.
  High pressure versions above 2 bar are fitted with a welded bush or
  flange to specific design information.

• TX5923: Features a remote sensor with mounting options
  including 1 1/2 BSP mounting bush or 50 mm ANSI flange.

3. Dimensions & Mounting

The dimensions and mounting options for the TX9130 series are as
follows:

• TX5921: Rear projecting sensor with 11/2 BSP mounting bush.
  Probe length can range from 165 mm (standard) to a maximum of 2
  m.

• TX5921: Rear projecting sensor with 50 mm ANSI mounting flange.
  Probe length can range from 165 mm (standard) to a maximum of 2
  m.

• TX5922: Side projecting sensor with probe length ranging from
  165 mm (standard) to a maximum of 2 m.

• TX5923: Remote sensor fitted with either a 1 1/2 BSP mounting
  bush or a 50 mm ANSI flange. Probe length can range from 165 mm
  (standard) to a maximum of 2 m.

4. Technical Details

4.1 Specification

Additional technical details of the TX9130 series:

• Flow Measuring Range: Rangeable from 0.5 to 5 m/s up to 0.5 to
  30 m/s linear flow velocity

• Accuracy:

• Linearity:

• Housing Temperature:

• Sensor Temperature:

• Humidity: 0 to 95% non condensing

• Protection Classification: Dust and waterproof to IP66

• Housing Material: Stainless steel reinforced polymide 6

• Sensor Material: Stainless steel (PTFE coated versions
  available to specification)

• Sensor Static Pressure: 20 bar (limited to 2 bar max with
  standard mounting accessories)

• Process Fitting: Wall mounting

• Cable Entry: 2 x M20

• Electrical Connections: 4 mm barrier/clamp terminals

• Nett Weight:

• Information Display: 17 character dot matrix alpha numeric
  LCD

• Operation Menu System:

• Keycode Protection: Microprocessor controlled with non-volatile
  data retention

• Master Reset:

• Text language: English, German, French, Spanish

4.2 Electrical Details

Electrical details for the TX9130 series:

• General Purpose Applications:
  • Output Signal: 4 to 20 mA
  • Max. Load: 600 ohms at 24 V dc
  • Power Supply: 10 to 30 V dc
  • Max. Current: 40 mA
• Group II Applications:
  • Output Signal: 4 to 20 mA
  • Max. Load: 600 ohms at 24 V dc
  • Power Supply: 10 to 30 V dc
  • Max. Current: 40 mA
• Group I Applications:
  • Output Signal:

FAQ

Q: What are the dimensions and mounting options for the TX9130

series?

A: The TX5921 model has a rear projecting sensor with either an
11/2 BSP mounting bush or a 50 mm ANSI mounting flange. The TX5922
model has a side projecting sensor. The TX5923 model has a remote
sensor fitted with either a 1 1/2 BSP mounting bush or a 50 mm ANSI
flange.

Q: What is the flow measuring range of the TX9130 series?

A: The flow measuring range is rangeable from 0.5 to 5 m/s up to
0.5 to 30 m/s linear flow velocity.

Q: What is the protection classification of the TX9130

series?

A: The TX9130 series is dust and waterproof to IP66.

Q: What are the electrical details of the TX9130 series?

A: The electrical details depend on the application group. For
general purpose applications and group II applications, the output
signal is 4 to 20 mA, the max load is 600 ohms at 24 V dc, the
power supply is 10 to 30 V dc, and the max current is 40 mA. For
group I applications, please refer to the user manual for specific
details.

TX9130 s e r i e s
TX5921/TX5922/TX5923 INSERTION VORTEX GAS FLOW SENSOR

TUNNELS
·
PIPELINES
·
ROADWAYS
·
VENTILATION DUCTS
·
MINING
·
PROCESS INDUSTRIES
ISSUE Q 06/15

INSTALLATION & OPERATING DATA

contents…
1 PRINCIPAL OPERATING FEATURES 2 APPLICATION 3 DIMENSIONS & MOUNTING 4 TECHNICAL DETAILS 5 INSTALLATION 6 CONNECTIONS 7 CONTROLS & INDICATORS 8 THE MENU OF FUNCTIONS 9 PROGRAMMING & CALIBRATION 10 MAINTENANCE 1 1 APPROVALS & CERTIFICATION

page 2 3 4 5 7 11 14 15 16 22 23

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INSTALLATION & OPERATING DATA
1 PRINCIPAL OPERATING FEATURES
The vortex flow velocity sensing system provides high accuracy, flow measurement free from drift and mechanical deterioration. As the stream of gas passes through the sensing head, vortices are generated by a transverse strut or ‘Bluff Body’ positioned in the flow path. The vortex frequency is proportional to the flow velocity and this frequency is detected by an ultrasound beam accurately located downstream of the strut. This information is processed by a specially designed software programme to provide user configurable information display and a conditioned output signal.
·Programmable information display for zero, span, signal offset, volumetric calculations, engineering units, turndown, damping, display suppression, fault mode, contrast, signal clamp.
·Language display text options.
·Keycode software security protection. ·Simple pushbutton scaling to match on- site parameters.
Signal offset, elevated zero, etc.
·Sensing probe has standardised output for simple servicing without the need for a calibrated wind tunnel.
·Output signal versions: 4 to 20 mA · 0.4 to 2 V · 5 to 15 Hz.
·Rangeable velocity from 0.5 m to 30 m/sec.
·High pressure versions up to 20 bar. ·Stainless steel sensing probe or special version with PTFE
protective coating.
·Non-standard sensing probe length for specific applications. ·Non standard cable length on remote connected version for
specific applications.
·Intrinsically Safe version for use in Group I and Group II hazardous areas.
·Automatic self test function.

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TX9130 s e r i e s

2 APPLICATION
TX5921

INSTALLATION & OPERATING DATA
Flow velocity measurement or volumetric measurement of air, gases and vapours in pipes, ducts and open areas.
·Ventilation systems. ·Cooling systems. ·Plant protection. ·High accuracy transfer metering. ·Environmental control and monitoring. ·Roadway and tunnel ventilation.

TX5922

·Versions with an integral sensor or a remote mounted sensor with a choice of adjustable mounting bush or
flange fittings for pipelines and ducts. N.B. High pressure versions above 2 bar, are fitted with a WELDED bush or flange to specific design information.

TX5923

TX5922
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·Versions with side projecting sensor used mainly for back mounting in open area applications (eg. tunnels and roadways).
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TX9130 s e r i e s

INSTALLATION & OPERATING DATA
3 DIMENSIONS & MOUNTING

TX5921 REAR PROJECTING SENSOR with 11/2 ” BSP MOUNTING BUSH

TX5921

PROBE LENGTH m: in = 165 mm (standard) max = 2 m
REAR PROJECTING SENSOR with 50 mm ANSI MOUNTING FLANGE

NB: Housing can be rotated through 300° with respect to the sensing head.
NB: Housing can be rotated through 300° with respect to the sensing head.

PROBE LENGTH m: in = 165 mm (standard) max = 2 m
TX5922 SIDE PROJECTING SENSOR
PROBE LENGTH m: in = 165 mm (standard) max = 2 m

NB: Housing can be rotated through 300° with
respect to the sensing head.

TX5923 REMOTE SENSOR

FITTED WITH 1 1/2 ” BSP MOUNTING BUSH

FITTED WITH 50 mm ANSI FLANGE

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PROBE LENGTH m: in = 165 mm (standard) max = 2 m

All dimensions in mm
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INSTALLATION & OPERATING DATA

4 TECHNICAL DETAILS

4.1 Specification

TX5921

REAR PROJECTING

SENSOR

TX5922 SIDE PROJECTING
SENSOR

TX5923 REMOTE SENSOR

Flow Measuring Range

Rangeable from 0.5 to 5 m/s up to 0.5 to 30 m/s linear flow velocity.

Accuracy

±2% characterised to the sensing element (within 12.5° rotation of flow axis).

Linearity

±1% (within 12.5° rotation of flow axis).

Housing Temperature

-15 to +50°C.

Sensor Temperature

­15 to 150°C (200°C available to specification).

Humidity

0 to 95% non condensing.

Protection Classification

Dust and waterproof to IP66.

Housing Material

Stainless steel reinforced polymide 6.

Stainless steel reinforced polymide 6.

2 m ­ 3 core cable with PVC coated flexible conduit
protection to the sensor.

(Cable lengths up to
10 m can be supplied specification).

Sensor Material

Stainless steel (PTFE coated versions available to specification).

Sensor Static Pressure

20 bar (limited to 2 bar max with standard mounting accessories).

Process Fitting

· 11/2″ BSP mounting bush. · 50 mm ANSI Flange. (also available with welded process fittings for high pressure applications to specification).

Wall mounting.

· 11/2″ BSP mounting bush. · 50 mm ANSI Flange. (also available with welded process fittings for high pressure applications to specification).

Cable Entry

2 x M20.

Electrical Connections

4 mm barrier/clamp terminals.

Nett Weight

1.5 kg.

1.5 kg.

2.5 kg.

Information Display

17 character dot matrix alpha numeric LCD

Operation Menu System
Keycode Protection

Microprocessor controlled with non-volatile data retention.
· Programming of Span and Zero · On-site scaling · Signal offset · Failure mode · Turndown · Volumetric Calculation · Engineering units · Signal damping · Display contrast · Display suppression · Signal fix.

Master Reset

Text language:

English German French

Spanish

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INSTALLATION & OPERATING DATA
4 TECHNICAL DETAILS continued
4.2 Electrical Details

GENERAL PURPOSE APPLICATIONS Output Signal: Max. Load: Power Supply: Max. Current:

4 to 20 mA 600 ohms at 24 V dc
10 to 30 V dc 40 mA

GROUP II APPLICATIONS Output Signal: Max. Load: Power Supply: Max. Current:

4 to 20 mA 600 ohms at 24 V dc
10 to 30 V dc 40 mA

GROUP II

GROUP I APPLICATIONS

Output Signal:

4 to 20 mA

Max. Load:

300 ohms at 12 V dc

Power Supply:

Max. Current:

40 mA

0.4 to 2 V

5 to 15 Hz

10 K ohms at 12 V dc Opto isolated 2 mA max.

6.5 to 16.5 V dc

15 mA

30 mA

GROUP I

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INSTALLATION & OPERATING DATA

5 INSTALLATION
5 .1 Conformity Check (Refer to Test Certificate provided with the sensor).

· Does the output signal of the sensor concur with the input requirement of the monitoring equipment being used?

20 mA
A
4

2 V
V
0.4

15 Hz
Hz
5

· Is the correct supply voltage available for the sensor?
· Is the velocity operating range of the system within the stated measuring range of the sensor? (0 to 30 m/sec).

· Is the maximum static pressure of the system within the stated pressure rating of the sensor?
· Is the temperature variation range of the process medium within the stated temperature range of the sensor?

· Hazardous area classification?

STANDARD OPTIONS AVAILABLE FOR INSERTION VORTEX GAS FLOW SENSORS

TX5921

VORTEX GAS FLOW SENSOR/TRANSMITTER
Rear Projecting Sensor.

CERTIFICATION OUTPUT SIGNAL

MOUNTING

Ex Group I Ex Group II

(01) 4 to 20 mA (12)

0.4 to 2 V (11) · 11/2 ” BSP Bush (22)

5 to 15 Hz (13)

(02) 4 to 20 mA

· 50 mm ANSI Flange

General Purpose (03) 4 to 20 mA

(21)

TX5922

VORTEX GAS FLOW SENSOR/TRANSMITTER
Side Projecting Sensor.

Ex Group I

(01)

Ex Group II

(02)

General Purpose (03)

4 to 20 mA (12) 0.4 to 2 V (11) 5 to 15 Hz (13) 4 to 20 mA 4 to 20 mA

· Wall Mounting

TX5923 VORTEX GAS FLOW SENSOR/TRANSMITTER
Remote Sensor.

Ex Group I

(01)

Ex Group II

(02)

General Purpose (03)

4 to 20 mA (12)

0.4 to 2 V (11) · 11/2 ” BSP Bush (22)

5 to 15 Hz (13)

4 to 20 mA 4 to 20 mA

· 50 mm ANSI Flange
(21)

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INSTALLATION & OPERATING DATA

5 INSTALLATION continued
5.2 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

d or

obstructions and approximately five pipe diameters from

20 d

5 d

down-stream intrusions.

d · Similarly, the sensor should be mounted at least fifteen pipe

15 d

5 d

diameters from a pipe reducer and fifty pipe diameters from

50 d

d 5 d

· If this is not possible then the installation of a standard flow straightener will improve performance.
d

4 d

5 d

· Fit a corresponding threaded boss or flange at the monitoring point and install the sensor, ensuring a gas tight
N.B. High pressure versions, above 2 bar, will be supplied with a welded bush or flange and will
require dedicated process fittings.

ISSUE Q 06/15

Clamping Ring

1/3 d

· Release the clamping ring on the mounting bush or flange.
· The centre of the flow path of the sensing head should be 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 nomore than 12° 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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TX9130 s e r i e s
INSTALLATION & OPERATING DATA
5 INSTALLATION continued
5.3 Fitting in Roadways & Tunnels (open area).
· To attain the best accuracy of response select a position away from adjacent structures and mount the sensor at least 200 mm
200 mm minimum
· Version TX5922 with a side projecting sensor can be mounted onto a suitable support using the mounting holes.
(Using a Trolex Pipe Mounting Bracket TX9200.11)
· Alternatively use a standard mounting bush or flange for fitting to a suitable bracket.

5.4 Orientation of the Housing.

Release

The housing of the sensor 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 (CCW) as far as it will go.

· Rotate the sensing probe or the sensor housing to the

desired position. (Rotation is limited to approximately 360° so

Lock

do not force the limit stops).

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INSTALLATION & OPERATING DATA
5 INSTALLATION continued
5.5 Precautions.
· Care should be taken, in the choice of installation, to ensure that vapour in the gas stream cannot condense onto the sensing head. This may cause an intermittent fault or temporary loss of signal. Operation can be restored by carefully cleaning the sensing head (Section 11.4).

5.6 Earthing.
· Take care to ensure correct earthing procedures during installation. Because of its high response sensitivity, the TX5920 can be affected by earth borne electrical interference where associated metal structures have not been properly earthed.

· EARTHING A SENSOR THAT IS ELECTRICALLY ISOLATED

sensor earth bar

conductor screen (when fitted)
conductors
cable armour (when fitted)

· EARTHING A SENSOR THAT IS FITTED TO A METAL STRUCTURE
conductor screen (when fitted)
conductors cable armour (when fitted)

sensor earth bar

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INSTALLATION & OPERATING DATA

6 CONNECTIONS
INTEGRAL SENSOR

TX5921 TX5922

1 2 3 45 6 78

+V

Signal

0V

Supply

REMOTE SENSOR

TX5923

1 2 3 45 6 78

+V

Signal

0V

Supply

Remote Sensor

Standard: 2 m Maximum: 10 m

0V +V 0V +V Red Yellow Black

Ensure that the process pipe or duct work is correctly earthed in accordance with local regulations. Inadequate earthing may adversely affect the operation of the
sensor. Where the unit is installed in an electrically noisy environment, it may be necessary to bond the sensor metalwork to a local secure earthpoint (Section 5.6).

6.1 4 to 20 mA Output Signal.

20 mA
A
4

The output signal from terminals 1 and 2 is a conventional 4 to 20 mA current regulated signal loop.

TX5920

TX9030

1 2 3 45 6 78
+V Supply
3 WIRE 0V
4 to 20mA signal

Due to the power requirement of the processing stages of the sensor, a separate power supply feed is also required.
This can be sourced from the monitoring equipment

TX5920
Monitoring Device
1 2 3 45 6 78
+V Supply 0V Supply
0V 4 to 20mA signal

(eg. TX9031 Trip Amplifier or a TX9044 Programmable Sensor Controller) or from a separate power supply.

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INSTALLATION & OPERATING DATA
6 CONNECTIONS continued
6.2 0.4 to 2 V Output Signal.

2 V
V
0.4 TX5920

TX9132

A low impedance two-wire voltage output signal requiring a separate power supply to the sensor. This can be derived from a Trip Amplifier or Programmable Sensor Controller, when one of those is used as the monitoring instrument.
This connection configuration works well up to about 100 metres distance between the sensor and the monitoring equipment.

1 2 3 45 6 78
+V Supply 0 V
0.4 to 2 V signal
3 WIRE

Both the signal and the power supply to the sensor are being carried in the common 0 V conductor so at some point ­ influenced by the length of the cable and the resistance of the cable cores ­ the current flowing in the 0 V conductor will
impose an unacceptable voltage error onto the signal.

TX5920

TX9132

1 2 3 45 6 78
+V Supply 0 V Supply
0 V 0.4 to 2 V signal
4 WIRE

This effect can be reduced on long distance connections by increasing the size of the cable cores, or even better, running a separate 0 V conductor to power the sensor.

6.3 5 to 15 Hz Output Signal.

15 Hz
Hz
5

A square wave, frequency variable, output that is proportional to the measured value. The output device is an uncommitted NPN transistor.

TX5920

TX6611 Power Supply

1 2 34 5 6 78
+V Supply 0 V Supply
4 WIRE

Output: Maximum Voltage: Maximum Current: Min. Pulse Rise Time:

5 to 15 Hz. (zero = 5 Hz). (span = 15 Hz). 15.4 V. 2 mA. 5 V/ms.

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INSTALLATION & OPERATING DATA
6 CONNECTIONS continued
6.4 Group II Hazardous Areas.

TX5920

HAZ SAFE TX9031

1 2 3 45 6 78

IMPORTANT Ensure that the sensor is the INTRINSICALLY SAFE version; TX5921.02 / TX5922.02 / TX5923.02
All output signal options of the sensor are certified Intrinsically Safe for use in Group II hazardous areas, zones 0, 1 and 2, when used in conjunction with zener safety barriers or isolation safety barriers. Only the sensor may be mounted in the hazardous area.

Suggested Zener safety barrier: MTL787s

Suggested safety isolator:

MTL5042

If you require any help in the use of safety barriers please contact Trolex Technical Depar.tment

6.4 Group I Hazardous Areas (Mining).

TX5920

SAFE HAZ

1 2 3 45 6 78

TX9132

IMPORTANT Ensure that the sensor is the INTRINSICALLY SAFE version; TX5921.01 / TX5922.01 / TX5923.01
All output signal options of the sensor are certified Intrinsically Safe for the use in Group I hazardous areas (Mining) when used with approved equipment eg. TX9132 Trip Amplifier or a TX9042 Programmable Sensor Controller. The complete system, both sensor and monitoring device can be mounted in the hazardous area.

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INSTALLATION & OPERATING DATA
7 CONNECTORS AND INDICATORS
The programming and setting routines for the sensor have been designed for utmost simplicity and the programming system is completely menu driven. There is no special software programme and data input terminal and or PC is not required.
There are just four keys for controlling the complete operation and the digital display provides instructions throughout the programming process. All entries are verified in the display.

SIGNAL DISPLAY
(section 9.2)
FUNCTION DISPLAY
(section 9.3)
BARGRAPH
(section 9.2)
UNITS
(section 9.7.4)

2. 53
M S

EXIT

SCROLL

SCROLL CONFIRM

UP

DOWN

· Hold the SCROLL Keys down for two seconds for rapid self keying.
· All data settings are retained under power failure.

DATA REVIEW
V1 .9
s/w Ver sion
Key Software version.

Sensr
Vo r t e x F l ow

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INSTALLATION & OPERATING DATA
8 THE MENU OF FUNCTIONS

FUNCTION

ENTER
9.6.1 ????

Section reference
in data

Initial default
setting

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INSTALLATION & OPERATING DATA

9 PROGRAMMING AND CALIBRATION

2 .53
m s

9.1 Switching On.
When switched on, the processor will initialise all the default values unless new values have previously been programmed.

9.2 Signal Display.
After two seconds, the display will switch to the SIGNAL DISPLAY mode, showing the measured signal value with the selected engineering units (m/s).
· The bargraph will also show a magnitude comparison of the input signal level.
· Signal over range.

MENU
K e yCode S c a l I ng
Calibration Mas t e r Re s e t
2. 53
ENT RY SAVED

9.3 Entering the MENU.
All the operating functions of the sensor can be programmed by entering into the MAIN MENU.

Key

to ENTER the main menu.

Key

or

to SCROLL up and down the MENU

Key

to CONFIRM.

A request to enter a KEYCODE will appear if access is prevented.

Refer to Section9.6

Previously programmed values will be shown in the main sectors of the display. Function changes can be programmed as described in the following sections.

· ENTRY SAVED will appear briefly whenever a new value is entered during programming.

NO T S A V E D

· NOT SAVED will appear briefly if a value is not entered during programming.

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INSTALLATION & OPERATING DATA

9 PROGRAMMING AND CALIBRATION continued

9.4 Exit

Key

to EXIT from any position in the MENU sequence.

Each operation of the key will revert the display one step back in the

MENU table until the SIGNAL DISPLAY is reached.

FAI L
! !! !!!! !! !!!

9.5 Self Test
The processor will constantly carry-out a self-test routine of the main circuit elements; EPROM, memory, comms and display read/write
function. Any malfunction registered will be denoted by a FAIL message in the display.

OO OO
E nt e r KC ode
N OG O G O

9.6 Keycode
Enter a four digit security keycode to access the MAIN MENU.

9.6.1 Enter Keycode

Key

to TRAVERSE the cursor.

Key

to INCREMENT the digit with the cursor under.

Key

to CONFIRM.

GO or NO GO will appear briefly to confirm keycode status.
This request will not appear if the KEYCODE is not active. Refer to Section9.6.2

+ 1 2 34
E nt e r KC ode
­ NOT ACTIVE (unrestricted access) + ACTIVE

9.6.2

Set Keycode The keycode is a selectable option and the code can be changed at any time.

The keycode can also be set to be ACTIVE or NOT ACTIVE.

Key

to TRAVERSE the cursor.

Key

to INCREMENT the digit with the cursor under.

Key

to CONFIRM.

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INSTALLATION & OPERATING DATA

9 PROGRAMMING AND CALIBRATION continued

9.7 Scaling
The numerical values presented on the display can be programmed.

Key

or

to SELECT the function.

Key

to CONFIRM.

20mA

20mA

Output

0 Lower

15m/s

30m/s

1 5 . OO 3 O . OO
S e t T u rn down
Adjustable Range: 5…30m/sec (16.4…98.43 ft/sec).

9.7.1 Turndown
When the sensor is being used on a lower operating velocity range below the standard calibrated range of 0 to 30m/s (eg. 0 to 15m/s) the complete response range of the output signal can be utilised by ‘Turning Down’ the sensor response to the required maximum flow range of the system being monitored.

Key

to TRAVERSE the cursor.

Key

to INCREMENT the digit with the cursor under.

Key

to CONFIRM.

9.7.2 Units

There is a choice of six engineering units of flow:-

Flow velocity values independent of the cross-sectional area of the flow path. 1.m/s (metres per second). 2.ft/s (feet per second).

Volumetric flow values relative to the cross-sectional areas of the flow path. 3.m3/s (cubic metres per second). 4.m3/h (cubic metres per hour). 5.ft3/s (cubic feet per second). 6.ft3/h (cubic feet per hour).

f t 3/ h f t 3/ s
m3/ h m3/ s ft/s
m/s
Select Units

· All display values will be automatically presented in the engineering units selected.
· If one of the VOLUMETRIC flow units (3 to 6) is selected, it will be necessary to enter an appropriate multiplication factor
relating to the cross-sectional area of the flow path. Refer to Section 9.7.3

Key

or

to SELECT the UNITS.

Key

to CONFIRM.

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INSTALLATION & OPERATING DATA

9 PROGRAMMING AND CALIBRATION continued

S CAL E
1 . O OOO

Range: 0…9 and D.P. (each digit)

· The cross-sectional area factor MUST be entered in the

same dimensional units.

Unit

Cross-sectional area

m3/s

square metres (m2)

m3/h

square metres (m2)

ft3/s

square feet (ft2)

ft3/h

square feet (ft2)

9.7.3 Scale Factor

If one of the four VOLUMETRIC flow units is selected, it will be necessary to enter a multiplication factor relating to the cross-sectional area of the flow path.

Refer to Section9.7.2

Key

to TRAVERSE the cursor.

Key

to INCREMENT the digit with the cursor under.

Key

to CONFIRM.

9.8 Calibration
The output signal parameters and operating functions can be programmed.

Key

or

to SCROLL the menu.

Key

to CONFIRM.

O O1. O
Se t Dampi n g
Range: 0…999.9s

9.8.1 Damping

The immediacy of response of the sensor can be DAMPED to filter unwanted spurious changes in the process flow.

Key

to TRAVERSE the cursor.

Key

to INCREMENT the digit with the cursor under.

Key

to CONFIRM.

The value entered approximates to the time taken in seconds for the signal to reach 63% of the final value (ie. one time constant).

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INSTALLATION & OPERATING DATA

9 PROGRAMMING AND CALIBRATION continued

D E F G B

9.8.2 Language

The display text can be shown in four different languages. English (GB) French (F) Spanish (E) German (D)

Key

or

to SELECT.

Key

to CONFIRM.

Se t La ngu ag e

5O
C ont r as t
Range: 100 = Minimum Contrast 0 = Maximum Contrast

9.8.3 Contrast

The contrast of the LCD can be varied to compensate for the effect of ambient temperature and light conditions.

Key

or

to SET the contrast.

Key

to CONFIRM.

O O OO
Se t D . P
Range: 0.000…00000

9.8.4 Decimal Places

When the sensor is measuring a rapidly fluctuating signal, the fluttering

minor digits in the display can be distracting. The position of the decimal

point can be moved to any position in the figure to minimise this effect.

Key

or

to TRAVERSE the decimal point.

Key

to CONFIRM.

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9 PROGRAMMING AND CALIBRATION continued

9.8.5 Fix Output

20mA Fix

It may be necessary, from time to time, to temporarily shut down the process to carry out maintenance or servicing which will probably mean stopping the flow.

4

To prevent an alarm condition being transmitted by the sensor, the output

signal can be temporarily FIXED at any desired PERCENTAGE value of the

output signal range. The FIXED LEVEL selected is a calibrated value so this feature can also be used to test the integrity of the signal loop and any remote monitoring

equipment, by simulating an output signal of defined value. Remote display systems can be calibrated and any alarm set point levels can be checked for function and accuracy.

O O . OO
Se t O/ P Si g

Key

to TRAVERSE the cursor.

Key

to INCREMENT the value of the digit with the cursor under.

Key

to CONFIRM.

Range: 0…99.99%

The signal will be RELEASED when the MENU position is vacated.

R E S ET
Wa i t . . .

9.9 Master Reset
All data will be re-initialised as if the power had been removed. All user settings will be retained.

Key

to RESET.

The display will return to the SIGNAL DISPLAY mode.

Refer to Section 8

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10 MAINTENANCE continued
There are no degradable components, but it is good safety practice to carry out regular preventative maintenance to confirm correct operation.

10.1

Output Signal

Check at regular intervals, that the value of the

output signal agrees with the value of the display

reading.

Refer to Section9.8

1 0 .2 Sensing Probe
Under normal circumstances, the calibration of the actual sensing probe will not change by any significant degree.
Check the accuracy at least once per year by comparing
the display reading with an accurately measured value of flow velocity.
Alternatively the sensor can be returned to our Product Support Department for checking and calibration.

1 0 .3 Cleaning the Sensing Probe

Remove the sensor at regular intervals to assess its

condition. Clean the sensing head with a soft brush

or cloth if necessary. Do not use sharp tools as this may

cause damage to the ultrasound transducers and

10.4

the transverse strut.
Hot Tap Mounting
Where the process cannot be interrupted to remove the sensor from a pipeline, an isolating ball valve may be

fitted to the process connection at the installation stage.

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11 APPROVALS AND CERTIFICATION

1 1 .1 Europe (ATEX)
Ex Certificate number:

Sira 99ATEX2135X

A T E X Ex Certification code:

I M1 Ex ia I Ma (-20°C Ta +60°C) II 1G Ex ia IIC T4 Ga (-20°C Ta +60°C)

Specific Conditions of Use:

The only sensor that may be used with the TX5923 (remote sensor head version) is that

provided by Trolex. The maximum length of cable allowed is 10 m.

The user should ensure that the equipment is not installed in a location where it may be subject to external conditions (such as high-pressure steam) which might cause a build-up of static on non-conducting surfaces (polycarbonate window). Additionally cleaning of the equipment should only be done with a damp cloth.

General Conditions of Use: Prior to installation, it is essential that user refers to the above certificate to ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex.

ATEX Directive (94/9/EC)

1 1 .2 Australia (ANZEx)
Ex Certificate number:

ANZEx 12.3003X

Ex Certification Code:

Ex ia I (-20°C Ta +60°C)

Ex ia IIC T4 (-20°C Ta +60°C)

Conditions of Certification:

Prior to installation, it is essential that the user refers to the above certificate to ensure that the

termination and cable parameters are fully complied with and are compatible with the

application. Copies of certificates are available from Trolex.

The user should ensure that the equipment is not installed in a location where it may be subject to external conditions (such as high-pressure steam) which might cause a build-up of static on non-conducting surfaces (polycarbonate window). Additionally cleaning of the equipment should only be done with a damp cloth.

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11 APPROVALS AND CERTIFICATION continued

11.3 Russia (Customs Union)

Ex certificate number:

TC RU C-GB.05.B.00327

Ex Certification codes:

PO Ex ia I Ma X

0 Ex ia IIC Ga T4 X

Conditions of Use:

Prior to installation, it is essential that user refers to the above certificate for any specific conditions of use. The user must ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex.

11.4 India (CIMFR)
Test report number:

CIMFR/TC/P/H553

11.5 South Africa
Ex certificate number:

MASC MS/13-188X

Ex certification codes:

Ex ia I (-20°C Ta +60°C)

Ex ia IIC T4 (-20°C Ta +60°C)

Special Conditions of Use:

Prior to installation, it is essential that the user refers to the above certificate to ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex.

The user should ensure that the equipment is not installed in a location where it may be subject to external conditions (such as high-pressure steam) which might cause a build-up of static on non-conducting surfaces (polycarbonate window). Additionally cleaning of the equipment should only be done with a damp cloth.

General Conditions of Use:
Prior to installation, it is essential that user refers to the above certificate to ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex.

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TROLEX LIMITED
NEWBY ROAD, HAZEL GROVE, STOCKPORT, CHESHIRE SK7 5DY, UK
+44 (0)161 483 1435 sales@trolex.com trolex.com

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References

• Trolex – At Trolex, we save lives. 60 years of our pioneering safety technology has helped keep workers protected in even the most challenging environments.

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