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    Calex FibreMini - Infrared Thermometer

    Manufacturer:
    The FibreMini is an infrared temperature sensor with a touch screen interface that measures surface temperature accurately, making it ideal for harsh applications
    Part Number: FibreMini
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    Take Precise Temperature Readings All the Way Up to 200°C

    The FibreMini is an infrared temperature sensor (pyrometer) with a fibre optic sensing head and separate electronics module.

    The fibre optic sensing head withstands ambient temperatures of up to 200°C and contains no electronics, so it may be used in areas of strong electromagnetic interference.

    Continuous laser sighting illuminates the position and size of the measurement spot while readings are being taken, without affecting the accuracy of the measurement.

    A touch screen interface is built into the electronics module, with temperature display, sensor configuration, data logging to optional MicroSD Card, and configurable alarm relay outputs.

    The sensor works by detecting the infrared radiation emitted from a surface as a result of its own temperature. The amount of radiation emitted is related to the temperature, and the sensor uses this relationship to provide an accurate temperature output.

    FibreMini sensors are ideal for measuring the surface temperature of many reflective metals in high-temperature applications, including iron and steel, as well as non-reflective nonmetals.


    Features

    • Temperature ranges from 250°C to 2000°C
    • Miniature sensing head withstands 200°C ambient temperature
    • Short measurement wavelength for improved accuracy on metals
    • No electronics in the sensing head - ideal for use near induction heaters and strong electromagnetic fields
    • Touch screen display with configuration and data logging
    • Choice of analogue or digital output
    • Alarm relays on all models
    • Advanced signal processing functions
    • Built-in laser sighting, simultaneous with measurement


    Touch Screen

    The backlit touch screen interface mounted in the lid of the electronics module provides a large, bright display of the measured temperature, as well as controls allowing full configuration of the sensor. The graph view shows the history of the measured temperature.

    In alarm conditions, the display turns bright red to provide an immediate and obvious alarm indication. Alarm modes and levels can be configured via the touch screen.


    Data Logging (-CRT and -BRT Models)

    The FibreMini can be used as a standalone data logger. All models include a MicroSD card slot for data logging, which can be configured via the touch screen interface. The user can select the sample rate and the number of samples to be taken and schedule the data logging to start at a certain time. With a MicroSD card larger than 2 GB, years of data can be stored, even at the fastest possible sample rate of 1 per second. Data is stored in .csv format and can be viewed and edited easily using spreadsheet software. Alarm events can also be logged to the MicroSD Card. A MicroSD card with SD card adapter is available as an optional accessory. The MicroSD card slot and battery holder are located inside the electronics module. Readings are time and date stamped using the sensor’s internal clock. The clock is reset when the power is disconnected, or it will continue if the optional battery is fitted.

    Target size and distance are critical to accuracy for most IR thermometers

     

    Please note: The given measured spot diameter contains 90% of the energy detected by the sensor. For maximum accuracy, we normally recommend the target is at least twice as large as the given measured spot. The sensor may be used at longer distances than shown above. In clean air there is no maximum measurement distance, and the distance does not affect the sensor's measurement accuracy; this is because the sensor is filtered to detect only the wavelengths of IR that are not absorbed by the atmosphere.

    PyroMini Infrared Temperature Sensor - 1. Basic Features

    Introduction to the PyroMini infrared temperature sensor from Calex Electronics, showing the main temperature screens and the graph view. 



    PyroMini Infrared Temperature Sensor - 2. Configuration

    How to change the settings of the PyroMini infrared temperature sensor from Calex Electronics, including: unlocking the sensor, changing the date and time, output processing, emissivity, reflected energy compensation, re-scaling the 4-20 mA output and changing the Modbus address.



    PyroMini Infrared Temperature Sensor: 3. Data Logging to MicroSD Card

    How to log temperature data with the PyroMini infrared temperature sensor from Calex Electronics. 



    PyroMini Infrared Temperature Sensor: 4. Alarms

    How to set up the alarms of the PyroMini infrared temperature sensor from Calex Electronics.

    Typical Applications

    The FibreMini is ideal for use where the ambient temperature is high, and/or the target has a reflective metal surface. The following suggestions are just a few of the industrial applications where the FibreMini can be used.


    Iron & Steel

    The harsh high-temperature environments near furnaces in the metals industry require rugged measurement equipment.

    The sensing head and fibre optic cable of the FibreMini can be placed in ambient temperatures of up to 200°C, and they are small and flexible enough to be fed through protective conduit with very tight bends.

    The touch screen interface can be operated with gloves on, and used as a local display, while still transmitting the temperature back to the control room.


    Pipe Welding

    Measure the preheat temperature of steel pipes before welding, between the induction coils. For measuring temperatures below 250°C in this application, please see the PyroUSB 2.2.


    Aluminium Extrusion

    The FibreMini produced good results at the press exit of an aluminium extrusion line, where the surface of the aluminium profile was repeatable and the emissivity was found to be consistent. Special considerations normally apply to aluminium temperature measurement, however it is possible to achieve good results with single-wavelength sensors such as the FibreMini in situations where the emissivity and temperature are both repeatable.

    In this application, the PyroCube M was also used for measuring the profile temperature after the water quench.

    Technical Information
    Temperature Range MT models: 250°C to 1000°C
    HT models: 450°C to 2000°C
    Maximum Temperature Span (-CRT Models) Full temperature range (up to 1550°C)
    Minimum Temperature Span (-CRT Models) 100°C
    Output 4 to 20 mA or RS485 Modbus (up to 247 sensors may be installed on a single Modbus network)
    Field of View Choice of optics (see Optics)
    Accuracy ±1% of reading
    Repeatability ±0.5% of reading
    Emissivity Setting Range 0.10 to 1.00
    Emmisivity Setting Method -BRT models: via RS485
    -CRT and -BRT models: via touch screen
    Response Time, t90 ≥240 ms (90% response)
    Spectral Range 2.0 to 2.6 μm
    Supply Voltage 24 V DC ± 5%
    Maximum Current Draw 100 mA
    Maximum Loop Impedance -CRT models: 900 Ω (4 to 20 mA output)
    Alarm Relays 2 x Single Pole Changeover alarm relays rated 24 V DC, 1 A, isolated 500 V DC



    Mechanical Specifications

    Sensing Head

    Electronics Module
    Construction Stainless Steel 316 Cast aluminium
    Dimensions Ø 12 x 48 mm (see diagram) 98(w) x 64(h) x 36(d) mm
    Mounting M12 x 1.5 mm thread Two M4 screw holes for wall mounting (see diagram)
    Fibre Optic Cable Length
    (sensing head to
    electronics module)    		 3 m, 5 m or 10 m
    Cable Connections Removable screw terminal blocks (see Connections)
    Conductor size: 28 AWG to 18 AWG
    Output Cable Gland Suitable for cable diameters 3.0 to 6.5 mm



    Environmental

    Sensing Head

    Electronics Module

    (without touch

    screen)

    Electronics Module

    (with touch screen)
    Environmental Rating IP65 (NEMA 4) IP65 (NEMA 4)
    Ambient Temperature Range 0°C to 200°C 0°C to 60°C 0°C to 60°C
    Relative Humidity Maximum 95% non-condensing Maximum 95% non-condensing Maximum 95% non-condensing
    CE Marked Yes Yes Yes
    RoHS Compliant Yes Yes Yes



    Touch Screen Specifications
    Touch Screen Display Format 2.83” (72 mm) resistive touch TFT, 320 x 240 pixels, backlit
    Configurable Parameters Temperature range (-CRT models), temperature units, emissivity setting, reflected energy compensation, alarms, signal processing, Modbus
    address (-BRT models), date and time, data logging
    Temperature Units °C or °F configurable
    Temperature Resolution 0.1°
    Alarm Configuration Two alarms with adjustable level, individually configurable as HI or LO.
    Alarm 2 can be set to target temperature or sensing head internal temperature
    Signal Processing Average, peak hold, valley hold, minimum, maximum
    Languages  English, Chinese (simplified), Japanese



    Data Logging Specifications
    Data Logging Interval 1 to 86,400 seconds (1 day)
    MicroSD Card Max. capacity: 32 GB (not included)
    Internal Clock Battery 1 x BR 1225 3V (not included)
    Variables Logged Target temperature, electronics module temperature, max, min, average, emissivity setting, reflected energy compensation
    temperature, alarm events
    File forma .csv
    Configurable Parameters Sample period, number of samples, scheduled start date and time



    Electromagnetic Compatibility Standards
    EN61326-1, EN61326-2-3 (Electrical Equipment for Measurement, Control and Laboratory Use - EMC Requirements - Industrial)

    Take Precise Temperature Readings All the Way Up to 200°C

    The FibreMini is an infrared temperature sensor (pyrometer) with a fibre optic sensing head and separate electronics module.

    The fibre optic sensing head withstands ambient temperatures of up to 200°C and contains no electronics, so it may be used in areas of strong electromagnetic interference.

    Continuous laser sighting illuminates the position and size of the measurement spot while readings are being taken, without affecting the accuracy of the measurement.

    A touch screen interface is built into the electronics module, with temperature display, sensor configuration, data logging to optional MicroSD Card, and configurable alarm relay outputs.

    The sensor works by detecting the infrared radiation emitted from a surface as a result of its own temperature. The amount of radiation emitted is related to the temperature, and the sensor uses this relationship to provide an accurate temperature output.

    FibreMini sensors are ideal for measuring the surface temperature of many reflective metals in high-temperature applications, including iron and steel, as well as non-reflective nonmetals.


    Features

    • Temperature ranges from 250°C to 2000°C
    • Miniature sensing head withstands 200°C ambient temperature
    • Short measurement wavelength for improved accuracy on metals
    • No electronics in the sensing head - ideal for use near induction heaters and strong electromagnetic fields
    • Touch screen display with configuration and data logging
    • Choice of analogue or digital output
    • Alarm relays on all models
    • Advanced signal processing functions
    • Built-in laser sighting, simultaneous with measurement


    Touch Screen

    The backlit touch screen interface mounted in the lid of the electronics module provides a large, bright display of the measured temperature, as well as controls allowing full configuration of the sensor. The graph view shows the history of the measured temperature.

    In alarm conditions, the display turns bright red to provide an immediate and obvious alarm indication. Alarm modes and levels can be configured via the touch screen.


    Data Logging (-CRT and -BRT Models)

    The FibreMini can be used as a standalone data logger. All models include a MicroSD card slot for data logging, which can be configured via the touch screen interface. The user can select the sample rate and the number of samples to be taken and schedule the data logging to start at a certain time. With a MicroSD card larger than 2 GB, years of data can be stored, even at the fastest possible sample rate of 1 per second. Data is stored in .csv format and can be viewed and edited easily using spreadsheet software. Alarm events can also be logged to the MicroSD Card. A MicroSD card with SD card adapter is available as an optional accessory. The MicroSD card slot and battery holder are located inside the electronics module. Readings are time and date stamped using the sensor’s internal clock. The clock is reset when the power is disconnected, or it will continue if the optional battery is fitted.

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