TROLEX TX6273 Temperature Sensor Transmitter Instruction Manual

: June 16, 2024
: Trolex

TROLEX TX6273 Temperature Sensor Transmitter

TROLEX TX6273 Temperature Sensor Transmitter

PRINCIPAL OPERATING FEATURES

High accuracy Temperature Sensor with an integral transmitter for machine temperature protection and plant safety monitoring.
Principal Operating Features

Version TX6273 for use with Trolex or similar remote temperature sensing probes. The input circuit may be compatible with either a KTY21-6 semiconductor temperature sensing element or a PT100 temperature sensing element.

Temperature sensing probes are and ordered separately from technical data sheet TX2070.
Version TX6274 is provided with an integral sensing probe intended for monitoring local ambient air temperature supplied only with a KTY21-6 semiconductor sensing element.
Conditioned analogue output signal possibilities: 4…20mA • 0.4…2V • 5…15Hz temperature calibrated.
Optional LCD temperature readout.
LED ‘power on’ indicator .
Intrinsically safe version for use in Group I and Group II hazardous areas.

APPLICATION

Temperature monitoring in critical installations where high accuracy and fast use is paramount, with the ability to transmit data over relatively long distances whilst maintaining stability and security of operation.

Pipes, Ducting and Conduits.
Vessels, Tanks, Storage Sumps and Reservoirs.
Power Packs, Gearboxes, Generators and Hydraulic Power packs.
Cooling Jackets, Cooling Systems, Refrigeration and Ventilation Systems.
Transformers, Motors, Joint Boxes and Convertors.
Environment, Roadways, Tunnels and Storage Areas.
A range of primary instrumentation and monitoring modules is available from Trolox to which the sensors can be directly connected to provide a flexible choice of display and control functions.

TRIP AMPLIFIER
for use with analogue output sensors.

CONFIGURABLE SENSOR CONTROLLER
for monitoring up to 8 analogue output sensors.

OMMANDER DISTRIBUTED I/OSYSTEM
for large scale general plant monitoring systems and the mining and tunneling industries.

DIMENSIONS

TX6273
REMOTE TEMPERATURE SENSING PROBES
Dimensions

ALL DIMENSIONS IN MM

TX6274
INTEGRAL AIR TEMPERATURE SENSING PROBE
Dimensions

TECHNICAL DETAILS

Specification

| SENSOR INPUT TYPES
---|---
| Semi-conductor| PT100 (TX6273 only)
Temperature Measuring Range| 0…100°C| 0…200°C
Overall Accuracy:| ±2%| 1% (dependent on class of probe)
Repeatability:| ±1%| 1%
Ambient Temperature Limits:| –10…70°C
Housing Material:| Stainless steel filled Polyamide 6
Indicator:| Green ‘Power on’ LED (on versions without LCD)
Protection Classification:| Dust and waterproof to IP65
Electrical Connections:| 4mm barrier terminals
Nett Weight:| 500g
Information Display:| 31/2digit LCD calibrated in °C

Electrical Details

TX6273 TX6274 GENERAL PURPOSE & Ex GROUP II APPLICATIONS (24Vdc)

Output:| 4…20mA|
---|---|---
Max Load| 600 ohms at 24V dc
Supply| 10…30V dc
Current| Loop powered

TX6273 TX6274 Ex GROUP I APPLICATIONS (12V dc)

Output:| 0.4…2V|
---|---|---
Min Load| 10k ohms
Supply| 9…16.5V dc
Current| <10mA
Output:| 4…20mA|
---|---|---
Max Load| 200 ohms at 12V dc
Supply| 9…16.5V dc
Current| Loop powered
Output:| 5…15Hz|
---|---|---
Max Load| Opto isolated. 2mA max
Supply| 9…16.5V dc
Current| 30mA

INSTALLATION

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?
12V dc 24V dc Is the correct supply voltage available for the sensor?
KTY21-6 PT100 Does the type of input stage of the sensor concur with the temperature sensing probe being used (TX6273)?
Does the temperature range of the process being monitored concur with the stated measuring range of the sensor?
Is the hazardous area classification correct?

GENERAL PURPOSE

GROUP I

GROUP II

STANDARD OPTIIONS AVAILABLE

TX6273.01 TEMPERATURE SENSOR/ TRANSMITTER GROUP I TX6273.02
TEMPERATURE SENSOR/ TRANSMITTER GROUP II TX6273.03
TEMPERATURE SENSOR/ TRANSMITTER GENERAL PURPOSE

OUTPUT SIGNAL|

0.4…2V

| (Group I only)| (11)
---|---|---|---

4…20mA

| | (12)

5…15Hz

| (Group I only)| (13)
SENSOR TYPE|

KTY21-6 Semiconductor

| (21)
---|---|---

PT100 Resistive (Group I only)

| (23)
DISPLAY|

With display

| (45)
---|---|---

Without display

| (46)

TX6274.01 TEMPERATURE SENSOR/ TRANSMITTER GROUP I TX6274.02
TEMPERATURE SENSOR/ TRANSMITTER GROUP II TX6274.03
TEMPERATURE SENSOR/ TRANSMITTER GENERAL PURPOSE

OUTPUT SIGNAL|

0.4…2V

| (Group I only)| (11)
---|---|---|---

4…20mA

| | (12)

5…15Hz

| (Group I only)| (13)
DISPLAY| • With display| (45)
---|---|---
• Without display| (46)

TX6273 TEMPERATURE SENSOR/ TRANSMITTER

Remote Temperature Sensing Probe

Mount the sensor in position and complete the electrical connections.
Avoid any other cables in the vicinity that may radiate electromagnetic interference.

Remote Temperature Sensing Probe

TX6274 TEMPERATURE SENSOR/ TRANSMITTER

Integral Temperature Sensing Probe

Mount the sensor in position and complete the electrical connections.

Choose a location that is shielded from direct air movement to prevent cooling of the sensing probe and from direct sunlight to prevent warming of the sensing probe, both of which may distort the measured temperature.

CONNECTIONS

OUTPUT SIGNAL OPTIONS 0V+V

2 WIRE PROBE CONNECTIONS
4 WIRE PROBE CONNECTIONS FOR LINE COMPENSATION
INTEGRAL AIR TEMPERATURE SENSING PROBE

0.4…2V Output Signal

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.
0.4...2V Output Signal

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

This effect can be reduced on long distance connections by increasing the size of the cable cores, or even better, running a separate 0V conductor to power the sensor enabling operating distances up to 1000m.
0.4...2V Output Signal

4…20mA Output Signa

The output signal from terminals 1 and 4 is a conventional 4…20mA two wire current regulated signal loop.

Sensor/transmitter using PT100 or semiconductor sensing probes have very low power consumption so the same loop can be used to also power the sensor. No separate power supply is needed.
0.4...2V Output Signal

Hazardous Area Applications

GROUP I HAZARDOUS AREAS (MINING)

TX6273.01 TEMPERATURE SENSOR/ TRANSMITTER
TX6274.01 TEMPERATURE SENSOR/ TRANSMITTER

Both output signal options of the sensor (0.4…2V and 4…20mA) are certified Intrinsically Safe for 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.

GROUP II HAZARDOUS AREAS
TX6273.02 TEMPERATURE SENSOR/ TRANSMITTER
TX6274.02 TEMPERATURE SENSOR/ TRANSMITTER

This version of the sensor is certified Intrinsically Safe for use in Group II hazardous areas, zones 0, 1 and 2. It must be used in conjunction with a protective device:
Certified monitoring equipment or
Zener safety barrier or
Isolation safety barrier.
ONLY THE SENSOR AND THE SENSING PROBE MAY BE MOUNTED IN THE HAZARDOUS AREA.

CONTROLS AND INDICATORS

TX6273 TEMPERATURE SENSOR/ TRANSMITTER Remote Temperature Sensing Probe
TX6274 TEMPERATURE SENSOR/ TRANSMITTER Integral Temperature Sensing Probe

CALIBRATING THE OUTPUT SIGNAL

The output signal transmitter of the sensor will have been accurately calibrated to the specified temperature range during manufacture and will remain essentially stable for an indefinite period.

4…20mA • 0.4…2V
It is good safety practice to check the condition of the signal at least annually. This will be automatically carried out when the sensor is returned to our Product Support Department for its annual safety check.

Alternatively the sensor output signal may be re-calibrated when required:

Connect an accurate test instrument to the signal output circuit of the sensor and set the instrument to the appropriate measuring range (The LCD readout may be used for this purpose if fitted).
Connect the normal supply voltage to the sensor terminals.
Connect a calibrated resistance decade box to simulate the temperature sensing probe.
Use the ZERO adjustment potentiometer to set the required minimum temperature level by using the appropriate value on the temperature/resistance chart (KTY21-6 or PT100).
Do the same for the maximum temperature level using the SPAN adjustment potentiometer.

Temperature	Resistance
°C	°F
–60	–58
–55	–67
–50	–58
–40	–40
–30	–22
–20	–4
–10	14
0	32
10	50
20	68
25	77
30	86
40	104
50	122
60	140
70	158
80	176
90	194
100	212
110	230
120	248
125	257
130	266
140	284
150	302
160	320
170	338
180	356
190	374
200	392

*KTY 21-6 figures based on average temperature factor (kt) for sensor.

MAINTENANCE

Output Signal

Check the response of the sensor at pre-determined intervals by applying an accurate temperature source to the sensing probe or by connecting a calibrated resistance decade box.

Compare the value of the output signal with the value applied.

Use the remote display of the monitoring system to measure the signal level or insert an approved test meter into the signal line.
If the sensor is fitted with a digital display, then this also can be used to determine the level of the signal.

Annual Safety Check

The main transmitter itself will not normally require maintenance or calibration but it is advisable to return it to the Trolex Product Support Department for an annual safety check.
The main circuit module inside the sensor housing can be removed from the housing for maintenance purposes.

Damaged Sensors

A Sensor that has been dropped or damaged in any way should be taken out of service immediately for inspection, repair and re-calibration.

Record Keeping

Institute a regular calibration and maintenance procedure and keep a record.
Incorrect use of the Sensor or inadequate maintenance may not necessarily be self evident in the Sensor and consequently it must be regularly checked and maintained.

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).

TX6273.01 TX6274.01 TEMPERATURE SENSOR/ TRANSMITTER
GROUP I: EEx ia I: Sira 99ATEX2132X
TX6273.02 TX6274.02 TEMPERATURE SENSOR/ TRANSMITTER
GROUP II: EEx ia IIC T4: Sira 99ATEX2132X

Electro Magnetic Compatibility.

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

Special Conditions of Safe Use

The equipment should not be installed where the external conditions could cause a build-up of electrostatic charges on their non-conducting surfaces. Additionally, the equipment shall only be cleaned with a damp cloth.

Compliance with ATEX Directives

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

The following applies to equipment covered by certificate number Sira 99ATEX2131X:

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 (Annex II, 1.5.1 to 1.5.8).
The Group II version of the equipment may be used in all hazardous zones with all gases with temperature classes T1, T2, T3 and T4.
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.
Subject to the applicable code of practice, the enclosure may be temporarily opened and the equipment worked on ‘live’ as all sparks which are inadvertently produced are non-incentive.
Installation shall be carried out in accordance with the applicable code of practice by suitably-trained personnel.
A special condition of installation and use applies to the equipment. Those installing or inspecting this equipment must have access to the contents of the certificate.
Adjustments to this equipment affect operation only and have no effect on intrinsic safety.
Repair of this equipment shall be carried out in accordance with the applicable code of practice.
The equipment relies on the following materials used in its construction:

Enclosure: Polycarbonate
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 Trolox 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 bio-degradable or re-cyclable 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, minimization 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 Trolox 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. Trolox 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.