Temperature Sensing Solutions in UAE and GULF

The temperature is determined due to infrared radiation emitted from a surface converted to electrical signal temperature measures without coming into contact with the part. Such infrared methods are typically ideal for hot, moving, or hard-to-reach objects.

Boilers, rotary kilns, reheat furnaces, cement kilns, glass furnaces, and or other combustion chambers.

Some models include infrared to monitor temperature distribution.

Yes. The air purge continuously cleans the viewing area.

Pressure gauges can measure gauge pressure (based on atmospheric or ambient pressure), absolute pressure (based on a vacuum), compound pressure (vacuum to positive), and differential pressure. The selection can be based on the application.

Brass is fine for non-corrosive water and air. Select SS316 wetted parts for chemical service or saltwater. The sealed diaphragm with PTFE coating protects against aggressive or sanitary media.

Temperature gauges are read in Celsius (°C) or Fahrenheit (°F) or in Kelvin (K) - in some cases there are °C/°F combined scales, displayed as single dial options.

Selection will vary with process temperature range, ambient conditions, stem immersion depth, mounting orientation, connection configuration, accuracy class selected and environmental protection specification for Gulf conditions.

Bimetallic thermometers typically measure from -40°C to 400°C, gas/liquid expansion measures typically from -40°C to 600°C there is also reversible full scale from -40°C to +60°C with Class 1 accuracy per EN13190 standards.

Regularly visually examine the dial is clear, pointer is moving, stem is undamaged, connection is tight, zero point is accurate, and for damped gauged glycerine fill level is correct periodically.

Yes, thermal imager camera systems are completely safe. They passively detect infrared radiation without emitting radiation.

Infrared camera technology detects heat that is emitted or reflected by an object and converts the infrared radiation to electrical signals. The electrical signal is then used to construct the thermographic image of the heat radiation while enabling spatial resolution showing temperature differences.

Thermal imaging camera applications include predictive maintenance, electrical inspections, security cameras, fire detection, and process monitoring in all industrial areas.

Wireless sensors use LoRa spread spectrum technology to monitor the temperature and report to a gateway without wires.

And those temperature sensors monitor either ambient temperature or surface temperature, and continually convert thermal data to digital data for analysis and alarms.

Some wireless sensors include ambient temperature sensors, surface-mount temperature sensors, probe temp-sensors, and multi-parameter sensors for environmental monitoring applications.

Gauges are precision devices that measure and indicate factors such as pressure, temperature, and flow in industrial and commercial systems.

The 4 primary types of pressure measurement gauges are Bourdon tube, diaphragm, digital, and capsule pressure gauges.

In order to maintain performance and accuracy of gauges, regular calibration checks, cleaning of sensing elements and replacing worn parts are necessary.

Yes, our temperature gauges range from -40°C to 600°C depending on model, with specialized versions for extreme high temperature applications.

All Tempsens gauges ship with factory calibration certificates, and we can provide recalibration services for on-going measurement traceability throughout the instrument lifecycle.

You should insert the reference probe and the test sensor into the wells of your calibrator, input your target temperature, give it time to settle/stabilize and then take your readings to compare and calculate your adjustments.

In a dry block calibration device, the metal blocks are heated or cooled to very precise temperatures that can give a thermally stable reference temperature for direct contact sensor calibration without the use of a liquid medium.

Portable dry block calibrator systems can calibrate temperature sensors, switches, and transmitters in a variety of industrial applications where accurate and traceable temperature measurement verification is required.

Absolutely. Every calibrator is supplied with NABL traceable certificates and optional ISO 17025.

Yes. Tempsens offers dry blocks starting from –180°C to high-temp ranges upto 1700°C.

Yes, Tempsens the dry block temperature calibrator PDF is available for every model.

No, thermal imager systems work independently of visible light, meaning the cameras can see heat-signatures in total darkness or through smoke and dust.
A CCTV camera sees light; a thermal camera captures heat. Instead of detecting visible light, it senses infrared radiation and converts it into an image.

Yes, infrared thermal imaging camera technology has optimum performance during nighttime operations, making it perfect for 24/7 industrial monitoring type applications.

• Furnace monitoring (steel, glass, cement etc.)
• Electrical inspections (substations, switchyards)
• Mechanical inspections (motors, bearings, conveyors)
• Refractory lining condition
• Early Fire detection in coal yards, storage areas
• Process control in manufacturing and many more…

It depends on usage, but most industries recalibrate their sensors annually or semi-annually.

Tempsens heat flux sensors measure up to 800 W/cm² with Gardon gauge technology with custom ranges available to 5000 W/cm² for specialized high intensity applications.

Flux: the flow rate of energy passing through a given surface area.

heat flux: Thermal energy transfer rate per unit area over time, expressed in W/cm², W/m², or kW/m².

Heat flux is also called thermal flux, heat flow density, or the rate of heat transfer per unit area, within thermal engineering use.

Heat flux measurement is fundamental to process optimization, safety monitoring, energy efficiency assessment, and thermal system design for both industrial and research applications across the Gulf region.

Cooling options: Water cooling is recommended for measurements above 5 W/cm² lasting more than 5 minutes, or when sensor body temperature may exceed 200°C.

To measure heat flux, a custom sensor is placed onto the surface to measure differences in temperature and calculate output following this formula: Heat Flux (W/cm²) = Sensor Output (mV) X Sensitivity Factor (W/cm²/mV).

Our sensors provide ±3% to ±5% accuracy depending on the model, with repeatability of 2%.

All sensors provide 10mV linear output at full scale range with infinite resolution, requiring no external power supply.

Standard sensors measure total heat flux (radiation + convection). Radiometer versions with windows measure radiation only.

It depends on usage conditions. We recommend annual calibration for critical applications or after exposure to extreme conditions.

All sensors include manufacturer calibration certificates. ISO standard calibrations are available upon request.

Liquid bath calibrators provide better performance with high accuracy, particularly in laboratories and QA systems.

Silicone oils or alcohols based on the temperature range — we include recommendations and compatible fluids with each unit. 

RTDs, and thermocouples can be calibrated in the liquid bath temperature calibrator.

Tempsens optic fiber temperature sensor systems include FluoroSenz for single-point measurements, BraggSenz using fiber Bragg grating technology, and DTSenz for distributed temperature sensing applications.

Tempsens optical fiber temperature sensor technology is based on the detection of change in the properties of light, these include fluorescent decay time or the shift in wavelengths due to temperature changes. Optical signals are converted to accurate temperature measurements.

Testing optical sensor systems includes calibrating the fiber optic temperature sensors against references, checking signal integrity on the optical sensor, and conducting environmental validation to ensure operational temperatures are measured effectively amidst any electromagnetic interference.

The blackbody principle describes an idealized object that absorbs all incoming electromagnetic radiation and emits thermal radiation with respect to the temperature of the object while conforming to Planck's radiation law.

Tempsens provides benchtop and portable liquid bath calibrator models with applications in the field and lab.

• Black body calibration is the comparison of the device to NIST traceable references using accurate temperature sensors and following established metrology practices.

• Detection of black body radiation uses calibrated infrared sensors, thermal imagers, or pyrometers that measure the fundamental electromagnetic spectrum of the heat coming from the heated cavity.

Constant agitation, profound immersion, and thermal equilibrium guarantee consistent and stable temperature areas for accurate calibration.

• A black body is used to measure and calibrate non-contact temperature devices, including pyrometers, thermal imagers, and IR thermometers by providing a uniform radiation source.

– Security & Surveillance

– Industrial Monitoring

– Firefighting

– Medical & Veterinary

– Search and Rescue

– Building Inspection

– Resolution

– Frame rate

– Area to be covered (FOV)

– Temperature range

– Connectivity

– Software Integration

• An infrared camera functions by detecting infrared radiation (IR), which is a type of electromagnetic radiation emitted by all objects based on their temperature. 

  The identified IR radiation is transformed into electrical signals, which are then converted into a thermographic camera image, with various temperatures shown by distinct colors or shades.

• Thermal monitoring systems are an effective way to identify issues in industrial environments before they develop into problems. Continuous heat monitoring can enable insightful process optimization, timely preventative maintenance, and rapid identification of hazardous issues.

• Predictive maintenance is the technique or a proactive maintenance strategy that involves monitoring the real-time condition and performance of equipment to predict when a failure is likely to occur. It is generally used to detect various deterioration signs, anomalies, and equipment performance issues. According to the current situation, the company can predict when the instrument might fail and plan a necessary course of action.

RTD (Resistance Temperature Detector) is an accurate temperature detector that has a thermowell around it for measuring temperature in industrial processes.

A pyrometer is a device for measuring very high temperature. It measures temperature based on temperature and light which is emitted from the object, it requires no contact with the subject, similar to a thermometer.

Pyrometers, also known as radiation thermometers, infrared thermometers, or non-contact thermometers, are instruments designed to measure temperature by detecting thermal radiation emitted from an object, without requiring physical contact.

A pyrometer measures infrared (IR) radiation that is emitted from the object being measured without contact, while a contact thermometer measures temperature by making contact with the object being measured.

The spectral range of an infrared thermometer defines the range of wavelengths to which the instrument is sensitive.

Adjustable compression fitting are used directly on probe to achieve the required insertion length in the process and to ensure the proper sheathing of probes into thermowell. Compression fittings for attaching tubing (piping) commonly have ferrules in them. Compression fittings are popular because they do not require soldering, so they are comparatively quick and easy to use.

Nipples are made up with a flange from the same family on each end of a tube section. (Fittings that are manufactured with different flange families on each end are called hybrid adapters.) Straight nipples are manufactured with the same size flange on each end of straight section of tubing. Reducer nipples have different size flanges (from the same family) on each end.

The three piece unions have to be used in hazardous areas, for the junction between conduits pipes and boxes or various appliances. The unions are made up of three independent pieces that can be screwed up by rotating the same pieces among them.

Following are the two types of termination style:

• Metallic Plugs and Socket Connections
• Standard & Miniature Thermocouple Connectors

The link between the thermoelectric wires of the thermocouple and those of the extension cable is made by means of non – compensated male and female connectors. The metallic body and casing of these connectors ensure the screening continuity as well as good temperature.

Standard & Miniature connectors are ideal for connecting thermocouple sensors and extension or compensating cable to each other. The pins are polarized to avoid an incorrect connection and the connector body is additionally marked for polarity. These connectors have color coding according to special standard like: ANSI, IEC etc.

Thermowells protect the sensor from process conditions, allow for hot replacement, lower maintenance costs, and reduce uncertainty in measurement while maintaining the integrity of system pressure.

Selecting the right

The basic parts of a thermowell are: stem body, tip shape, process connection (threaded, welded, or flanged), and protective tube which holds the temperature sensor in place.

Installing a thermowell includes finding the appropriate types of thermowell based on your process conditions, the appropriate insertion length, or depth before performing the work to ensure the process connection is secure, and then inserting the thermowell sensor assembly.

Thermowell frequency is defined as the wake frequency calculations completed in the design in order to limit the possibility of failure due to vibration to assure the long-term operational safety of the design and goal of product compliance.

• Metallic tubes are fabricated or machined from SS, Inconel, or Monel and offer strong protection in high-velocity or high-pressure fluid systems.

• Threaded, flanged, socket weld, and Van Stone are popular, with varying advantages in installation, maintenance, and strength.

• Fabricated thermowells consist of several pieces that are welded together, ideal for low to moderate process conditions, and provide economical protection.

• Barstock thermowells are machine-turned from solid metal bars, offering exceptional mechanical strength and toughness for high-stress applications.

• Van Stone thermowells are made from a single bar with a slip-on flange, with a leak-free seal without having to weld the flange.

• Typical tip profiles are straight, tapered, stepped, and helical—each one suited to optimize response time, strength, and flow resistance.

• Thermowells are composed of a stem (shank), tip (sensing end), and process connection. They’re built to house sensors while withstanding process conditions.

• Shank construction is the shape of the stem (straight, stepped, or tapered), which influences strength and response time of the sensor.

• Types of Flange are raised face (RF), flat face (FF), and ring-type joint (RTJ), depending on pressure rating and sealing surface.

• Welding types are full penetration welds, fillet welds, and socket welds, each of which is qualified for strength and leak-tight performance.

• WPS specifies the way welding is done; PQR checks it through testing. Both ensure welds are safe and of quality.

• Special coatings such as PTFE, ceramic, or carbide resist corrosion, scaling, and abrasion in tough environments.

• Normal tests involve hydrostatic pressure tests, dye penetrant examination, radiography, material testing, and dimensional inspection.

• This checks chemical composition and mechanical properties to guarantee ASTM or ASME conformity.

• It verifies all important dimensions such as insertion length, bore, and flange alignment according to drawing specifications.

• This test places high fluid pressure on the thermowell to verify its seal and structural strength.

• DPI is a non-destructive inspection that identifies surface cracks or welding flaws by using a fluorescent or visible dye.

• Radiographic examination employs X-rays or gamma radiation to identify internal flaws or discontinuities in welds and wall thickness.

• Frequency limits, as specified by ASME PTC 19.3 TW-2010, forestall resonance and vibration-induced failure due to flow-induced turbulence.
  

• Stress on the thermowell is minimized at low velocity, enabling longer insert lengths or weaker profiles.
  

• Select the thermowell material according to the temperature range and the environment (corrosive, oxidizing etc.) in which it is to be used.
  • These wells can be made from different materials like SS304, SS316, HRS446, Inconel, Monel, Ceramic, etc.
• According to the construction of Thermowell (Steeped Shank, Straight Shank, Tapered Shank)
  • Steeped Shank- Provide faster response time and lower drag force.
  • Straight Shank- Extremely strong, but response time is slower and drag force on the fluid flow is high.
  • Tapered Shank- Provide good response time and strength.
• Thermowell Insertion Length
  • For best temperature measurement accuracy, the “U” dimension should be long enough to permit the entire temperature-sensitive part of the measuring instrument to project into the medium being measured.
    Liquid temperature measurement: One inch or greater.
    Gas temperature measurement:- three inches or greater.
• Resistance to vibration.
  • Fluid flowing past the well forms a turbulent wake (the Von Karman Trail), which has a definite frequency based on the diameter of the well and the velocity of the fluid.
  • The thermowell must have sufficient stiffness so that the wake frequency will never equal the natural frequency of the thermowell itself. If the natural frequency of the well were to coincide with the wake frequency, the well would vibrate to destruction and break off.
• To avoid the Thermowell failures caused by excessive pressure, drag forces, high temperature, corrosion, vibrations, it is recommended to run thermowell calculations based on your applications:
  • Maximum or operating temperature
  • Maximum or operating pressure
  • Fluid(gas or liquid) velocity
  • Fluid Density.

• Accessories comprise compression fittings, bushings, thermocouple connectors, gaskets, and support collars for installation and sealing.

Resistance temperature detectors determine temperature by taking the change in electrical resistance of platinum elements and correlating that change with temperature change. RTDs are used mainly in industrial processes where accuracy and stability are important which include power plants, chemical processing, pharmaceuticals, and oil refining where precise control of temperature is vital in order to maintain a safe and efficient process.

RTD resistance changes in a predictable manner with temperature according to the equation α = (R100 - R0)/(R0 x ΔT) where the linear resistance-temperature coefficient of platinum remains largely unaffected across a broad range of temperature; and since a resistance temperature element (RTD) detects the change in resistance electronically, the change in resistance is converted three ways into temperature with high accuracy and repeatability.

The calculation of RTD temperature requires the use of the Callendar-Van Dusen equation for platinum (PT) resistance temperature sensors for all temperatures less than 0°C is R(T) = R0[ 1 + AT + BT² + CT³(T-100)]. For temperatures in the 0°C to 850°C range the relationship is R(T) = R0 (1 + AT + BT²). The definitions in the equations include R0 as the resistance at 0°C (for example Pt100 is equal to 100Ω at 0°C), A, B, C are coefficients standardized so that performance of the resistance temperature sensor is met within each application.

The RTD sensor’s operating principle relies on the fact that resistance varies with temperature in a known manner, providing accurate and stable temperature readings.

Think about parameters such as temperature range, precision, environment (vibration, chemicals), response time, and installation type. Select materials and construction based on these.

RTDs are applied to steel, pharmaceuticals, food processing, petro, HVAC, aerospace, power plants, and industrial automation for accurate temperature measurement and control.

The Callendar-Van Dusen equation is used to define RTD resistance:
R(t) = R₀(1 + At + Bt² + C(t – 100)t³), where A, B, C are constants.

Common materials are platinum (most precise), copper, nickel, and nickel-iron alloys—selected on the basis of stability, linearity, and corrosion resistance.

Platinum is highly stable and has a large range; copper is economical but low-resistance; nickel is highly sensitive but non-linear.

Platinum RTDs generally function within the range of –200°C to +850°C, whereas copper and nickel versions possess lower temperature thresholds determined by their design and materials.

IEC 751 specifies tolerances for RTD:
Class A = ±(0.15 + 0.002×t)°C;
Class B = ±(0.3 + 0.005×t)°C;
There are other classes such as 1/3, 1/5 DIN which are for greater precision.

They are high-purity platinum RTDs in accordance with ITS-90 standards and used in metrology laboratories for precise and repeatable measurements.

RTDs are made up of a sensing element (wire or film), insulators, leads, and a protective cover. They can be constructed as thin-film, coil-wound, or mineral insulated.

This form employs platinum wire wound into a helix and placed inside a ceramic tube for support, suitable for precise lab and industrial use.

Platinum wire is wound over a mandrel and glass- or ceramic-covered here, providing improved vibration resistance and moderate accuracy.

RTDs operate on 2, 3, or 4-wire configurations. Additional wires ensure the elimination of lead resistance and ensure greater accuracy in measurements.

Simple configuration in which a single lead is connected to both ends of the element. It’s easy but has the effect of lead resistance being measured, which decreases the accuracy.

It’s the most popular industrial setup; it takes care of lead wire resistance if all leads have the same resistance.

Utilized in applications requiring precision, it totally removes lead resistance effects by sensing voltage along a known current path.

RTD wiring generally adheres to color codes: two red and one white for 3-wire; two red and two white for 4-wire configurations.

These RTDs are housed in compacted MgO within a metal sheath, thereby being vibration-resistant and flexible, and suited for harsh environment use.

Typical errors are lead wire resistance, insulation breakdown, self-heating, mechanical stress, and long-term calibration drift.

Conformity guarantees standardized performance from sensors; increased conformity indicates greater interchangeability without recalibration.

Sensitivity is a measure of how much the resistance varies per degree; greater sensitivity enhances measurement resolution and signal intensity.

High insulation resistance avoids shunting errors and insures the RTD’s readings are correct and not affected by leakage currents.

Current measurement induces minor self-heating. If not relieved, it causes errors. Reduced current or improved heat removal lessens the effect.

It establishes the speed with which the RTD responds to changes in temperature. Reduced time constants allow faster response in dynamic applications.

Repeatability guarantees that the RTD delivers the same output for a given set of circumstances, essential for process control and data logging to be reliable and consistent.

Long-term resistance to drift is represented by stability. Platinum RTDs exhibit excellent stability, particularly in harsh industrial environments.

Suitable packaging facilitates heat transfer, guards the element, and maintains precision and quick response in the desired environment.

These are robust RTD assemblies contained in protective sheaths and used for direct immersion or industrial installations within a thermowell.

Probe assemblies consist of the RTD sensor, sheath, lead wires, and mounting hardware to meet process connection specifications.

Flexible RTDs are thin, flexible sensors applied in curved or irregular surfaces, offering quick response and high accuracy in confined areas.

These RTDs are engineered for custom applications like surface mounts, embedded sensors, or flexible strip form in OEM equipment.

RTDs are employed in environments such as process industries, laboratories, pharmaceuticals, aerospace, energy, and HVAC, where accurate and consistent temperature regulation is necessary.

They offer excellent accuracy, enduring stability, wide temperature range, high repeatability, making them ideal for precise temperature control applications.

RTDs are pricier than thermocouples, respond more slowly, and are less applicable at extremely high temperatures (beyond 850°C).

Yes, thermocouples are regarded as heat sensors in UAE and Gulf industries, especially HVAC, oil and gas applications, as they are reliable and durable products.

Most of the Gulf countries technicians test thermocouples by connecting the two thermocouple wires to a multimeter which measures voltage output from the thermocouple. If you obtain a reliable reading in millivolts, it tells you that the thermocouple is operationally valid in that extreme temperature range relative to your application, and safety for your equipment.

type based on temperature range, environment (oxidizing, reducing), sensor shape, and process compatibility.

Thermocouples offer faster response and wider ranges; RTDs are more stable over time. Thermistors are limited to low temps and require complex electronics.

• Hot junctions in thermocouples are formed using TIG or laser welding to ensure conductivity and stability.

Tempsens thermocouples follow IEC 60584, ASTM E230, and ANSI MC96.1 for EMF output and material consistency.

• Thermocouples (R, S, B) are made with platinum-rhodium for high-temperature measurements where a temperature of more than 1200° is required and up to 1750°C.

• Refractory Metal Thermocouples are manufactured from exotic metals like Tungsten and Rhenium. These metals are expensive, difficult to manufacture, and brittle. These are utilized in high-temperature environments and under reducing or vacuum atmospheres, functioning at temperatures up to 2300°C.
  

   

Used in industries like:

• Steel
• Glass
• Cement
• Oil & Gas
• Power
• Petrochemical
• Nuclear & Defence
• Chemical
• Aerospace 
• Laboratories

Key traits include: 

• Quick response time
• Wide temperature range
• Compatibility with many industrial controllers and PLCs.

MI thermocouples provide:

• High flexibility
• Fast response
• High insulation resistance
• Ideal for rugged installations.

• Thermocouple uses in the steel industry are:
  • Blast Furnace
  • Annealing Furnace
  • Sinter Plants
  • Tundish
  • Billet reheating
  • Rolling mill temperature monitoring.
  • Mold Casting

Thermocouple uses in the cement industry are:

• Clinker zone 
• Pre-heaters
• Rotary kilns
• Boilers

Thermocouple uses in the pharma industry are:

• Autoclaves
• Lyophilizers
• Sterilizers
• Cleanroom validation
• Distillation Columns
• Process- Tank, boiler, reactor, dryer, granulation, distillation column, etc 

Thermocouple uses in the petrochemical industry where corrosion-resistant and high-temperature sensors are critical:

• Reactor; Fire Tube & Heat exchangers
• Reformers
• Naphtha Cracker unit 
• Pipelines
• Sulphur Recovery Unit (SRU)
• Vibrations & Bearing applications
• Fluid Catalytic Cracking unit