TROLEX TX5924 Vortex Gas Flow Detector Remote Probe Instruction Manual

: June 16, 2024
: Trolex

Table of Contents

INSTRUCTION FOR USE
PRIN CIPAL OPERATIN G FEATURES
APPLICATION
DIMENSIONS
TECHNICAL DETAILS
CON NECTIONS
INSTALLATION
MAINTENANCE
APPROVALS AND CERTIFICATION
PROTECTING THE ENVIRONMENT
CUSTOMERS SUPPORT
Read User Manual Online (PDF format)
Download This Manual (PDF format)

TROLEX TX5924 Vortex Gas Flow Detector Remote Probe

INSTRUCTION FOR USE

PRIN CIPAL OPERATIN G 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’ intruding into the flow path. The vortex frequency is proportional to the flow velocity and this is detected by an ultrasound beam accurately positioned downstream of the strut.

The data is processed to provide an accurately calibrated output frequency signal that is proportional to the flow velocity and this is used to input directly into the TX6522/ 3 Enviro Multisensor.

0…2KHz nominal output frequency.
0.5m…30m/ sec measuring range.
Stainless steel sensing probe.
Intrinsically Safe version for use in hazardous areas.

APPLICATION

Portable, flow velocity measurement or volumetric measurement of air, gases and vapours in pipes, ducts and open areas.

Ventilation systems.
Cooling systems.
Environmental control and monitoring.
Roadway and tunnel ventilation.
Process extraction plants.
Direct input compatibility with Trolex TX6522/ 3 Enviro Multisensor.

DIMENSIONS

ALL DIMENSIONS INMM

TECHNICAL DETAILS

Flow Measuring Range:	0.5…30m/s
Accuracy:	2%.
Ambient Temp. Limits:	–15…150°C.
Humidity:	0…95% non-condensing.
Protection Classification:	Dust and waterproof to IP66.
Sensing Probe Material:	Stainless steel.
Net Weight:	1kg.
Connecting Cable:	2m, flexible, complete with connector.

Output Signal:
| 0…2KHz ±10% nominal for the 0…30m/s measuring range. (flow velocity/frequency relationship provided with each sensor).
Supply Voltage:| 5V ± 0.2V
Maximum Current:| 10mA.

CON NECTIONS

Interconnection with Trolex TX 6522 / 3 Enviro Multisensor.

INSTALLATION

Conformity Check

0…2KHz (nominal)

(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?

5V dc ± 0.2V

Is the correct supply voltage available for the sensor?

0.5…30m/ sec

Is the velocity operating range of the system within the stated measuring range of the sensor?
Is the installation in a hazardous area?
Ensure compliance with intrinsic safety regulations.

TX 6522 /3 Enviro Multisensor

In order to ensure that the TX5924 Vortex Gas Flow Sensing Probe displays linearity accurately on the TX6522 Enviro Multisensor, a polynomial equation has been programmed into the TX6522/3. The TX5924 has been characterised to line up with this polynomial . The TX6522/3 can be lined up with the TX5924 by inputting 4 coefficients into the TX6522/3. The coefficients (A ,B, C and D) are etched onto the TX5924 head and also written on its calibration certificate.

Programming the T X 5 9 2 4 Coefficients on the T X 6 5 2 2 / 3

Turn on the TX6522/3, and navigate to the Air Flow sensor parameters menu (refer to the TX6522/3 IOD for details).

Air Flow Sensor Parameters

This function will only appear when a remote air velocity sensor is connected to the auxiliary input of the TX6522/ 3.

The operating parameters of the sensor can be set up.

Scroll to North/ South SELECT the sensor coefficients.
Step East.
Step West to return to BASE.

ALWAYS SWITCH OFF THE SUPPLY WHENEVER THE AIR VELOCITY SENSOR IS CONNECTED OR IS DISCONNECTED.
This ensures that the software is initialised to the new operating conditions.

Sensor Coefficients

Fixed coefficients relating to the output characteristics of the individual vortex flow sensor will have been entered into the TX6522/3 during manufacture and will not require further adjustment.
If a new flow sensor is introduced, the TX6522/3 will need to be aligned to concur with the characteristics of the new sensor. Data is supplied with the new sensor in the form of four calibration codes or coefficients A, B, C, D for this purpose.

Scroll North/ South to SELECT the co-efficient.
Step East to modify a coefficient.
Step East/ West to TRAVERSE the cursor.
Scroll North/ South to SET the digit with the cursor under.

Repeat the same procedure for B, C and D.

Step East or return West.
Step West to return to BASE.

Operation of the TX 5924 with the TX6522 Enviro Multisensor

For information on how to use the airflow option on the TX6522/3, refer to the TX6522/3 IOD.

MAINTENANCE

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

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 output signal with an accurately measured value of flow velocity.
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 the transverse strut.

APPROVALS AND CERTIFICATION

Intrinsically Safe

The instrument is certified Intrinsically Safe Group I and Group II apparatus for use in potentially explosive atmospheres to EURONORM standards when used with an approved power supply or safety barriers.

The sensor is designed to comply with the ATEX directive (94/ 9/ EEC).

GROUP I: I M1 EExia I (Ta = –20°C…+60°C) SIRA99ATEX 2158

GROUP II: II 2G EExia IIC T4 (Ta = –20°C…+60°C) SIRA99ATEX 2158

| Group I| Group II
---|---|---
U¡| 16.5V| 30V
I¡| 390m A| 390m A
P¡| 1.61W| 1.2W
C¡| 0| 0
L¡| 15µH| 15µH

Electro Magnetic Compatibility.

The instrument is designed to comply with the EC directive on EMC (89/336/EEC).

Compliance with ATEX Directives

Instructions specific to hazardous area installations (reference European ATEX Directive 94/ 9/ EC, Annex II, 1.0.6.)

The following applies to equipment covered by certificate number Sira 99ATEX 2158:

To comply with the requirements for intrinsic safety, the equipment must be supplied only from associated apparatus with an appropriate safety description matching the input parameters detailed in the certificate.
The equipment has not been assessed as a safety related device (Directive 94/9/EC, Annex II, 1.5.1 to 1.5.8).
In Group I applications, the equipment is certified as Category M1.
In Group II applications, the equipment is certified as Category 1G and may be used with flammable gases and vapours with apparatus groups IIA, IIB & IIC and with temperature classes T1, T2, T3 and T4. The equipment has not been assessed for suitability with flammable dusts.
The equipment is only certified for use in ambient temperatures in the range –20°C to +60°C and should not be used outside this range.
The certificate number has an ‘X’ suffix which indicates that special conditions of installation and use applies. Those installing or inspecting this equipment must have access to the contents of this certificate.
Installation and repair shall be carried out in accordance with the applicable code of practice by suitably-trained personnel.
The equipment relies on the following materials used in its construction:
Enclosure: polycarbonate
Sensing Head: stainless steel
Window: polycarbonate
The equipment should not be exposed to substances, which could degrade these materials.

PROTECTING THE ENVIRONMENT

Many of our products are often used to monitor the quality of environmental conditions consequently Trolex is also particularly aware of the need to protect human health and the environment in which we live.

The Company has instituted a radical environment protection policy to ensure that all aspects of our manufacturing programme have the minimum possible detrimental impact on the environment. This covers all stages beginning with sustainable product design supported by careful selection of the materials used in their production, through to managed recovery and disposal at the end of the useful life of a product.

This policy also incorporates the principles of the Waste Electrical and Electronics Equipment (WEEE) directive, and the associated Restriction of Hazardous Substances (RoHS) directive, to be implemented in EU countries. Progress is already well advanced on the introduction of a completely new range of products that maximise the central principle of sustainable design with the intention of reducing the end-of-life cost to the end user.

All Trolex products are manufactured to exacting standards in accordance with our stringent quality control ethos. Having chosen to use one of our products will, in itself, guarantee extended durability and a long operating life, endorsed by our commitment to recycling and recovery.

All packaging materials are carefully selected to be biodegradable or re-cycle able where possible.
All plastic materials are identified for recycling purposes and re-cycled materials are used where it is possible to do so.
Printing paper and material are sourced from suppliers that have a declared environmental management system.
Product design centred around high quality and long term durability. Modular architecture both in construction and software design suitable for future upgrades and adaptability to alternative duty.
Ease of product disassembly, minimisation of fixing devices, and clear separation of functional parts to benefit re-use and re-cycling.
Control and monitoring of suppliers of components and sub-assemblies. Deal only with suppliers that have a defined commitment to environmental monitoring principles.
Control the use of restricted substances within the design process. Deal only with suppliers that have a defined commitment to the control of restricted substances.
Provide an efficient high speed service within Trolex for repair, refurbishing and conversion of products for alternative duty.
Provision of an end-of-life product Take-back service for recovery, re-use, and recycling of electrical and electronic components. Retain the packaging of a new product and re-use it to return the device to us at the end of its working life. Trolex will guarantee to recover all materials and components, where practicable and arrange for them to be re-cycled in an appropriate and in a safe manner.