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Calex FibreMini series Operator's Manual

Fibre optic pyrometer
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FibreMini
Fibre Optic Pyrometer
Operator's Guide

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Summary of Contents for Calex FibreMini series

  • Page 1 FibreMini Fibre Optic Pyrometer Operator's Guide...

  • Page 2: Measurement Specifications

    FibreMini 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.
  • Page 3 Max. Current Draw 100 mA Max. Loop Impedance (-CRT 900 Ω (4-20 mA output) models) Alarm Relays 2 x Single Pole Changeover alarm relays, rated 24 V DC, 1 A, isolated 500 V DC Data Logging Specifications Data Logging Interval 1 to 86,400 seconds (1 day) MicroSD Card Max.

  • Page 4: Mechanical Specifications

    Mechanical Specifications Sensing Head Electronics Module Construction Stainless Steel 316 Die Cast Aluminium Major 12 (dia.) x 48 (l) mm 98(w) x 64(h) x 36(d) mm Dimensions Mounting M12 x 1.5 mm thread Requires two M4 screws for wall mounting (see Installation) Fibre Optic Cable Length 3 m, 5 m or 10 m (sensing head to electronics...

  • Page 5: Model Numbers

    Model Numbers FM2.2 - 301 - MT - CRT - 3M Fibre Optic Cable Length 3M = 3 metres 5M = 5 metres 10M = 10 metres Output and Interface CRT = 4-20 mA output, two alarm relay outputs, with touch screen BRT = RS485 Modbus output, two alarm relay outputs, with touch screen...
  • Page 6 Field of View Diagrams Diagrams show the diameter of the measured spot at each distance, for 90% energy. The sensor will also measure at longer distances than the diagrams show. Measurement accuracy is not affected by distance, however the measured spot size will be larger at longer distances.

  • Page 7: Emissivity Adjustment

    Enter the furnace temperature into “Reflected Temperature” and select “Enable Reflected Energy Compensation”. For assistance, contact Calex. Alarm Outputs The sensor has two alarm relay outputs, rated 24 V DC, 1 A. They are individually configurable via the touch screen interface.

  • Page 8: Using The Touch Screen Interface

    Using the Touch Screen Interface Main Screen Displays a large indication of the measured temperature. The (Temperature background turns bright red when an alarm is activated. View) MicroSD Card Status This icon is displayed when a MicroSD card is inserted, and flashes when data logging is in progress.
  • Page 9 Lock/Unlock Prevents settings being changed via a four-digit numerical code. To unlock the sensor, enter the password and press the Unlock icon. The default password is 1234. Change Password Enter, confirm and save a new four-digit code. Graph Displays the recent history of the Filtered Temperature and the Sensor Temperature.
  • Page 10 Settings Emissivity & Compensation Adjust the emissivity setting and reflected energy compensation options. 4-20 mA Output (-CRT models) Set the temperature range limits for the linear 4-20 mA analogue output. RS485 Modbus Output (-BRT models) Set the Modbus address. Date & Time Change the date and time for data logging purposes.
  • Page 11 Emissivity & Compensation Settings Emissivity Setting Enter the emissivity of the target surface. The emissivity setting should match the target emissivity for maximum accuracy. Enable Reflected Energy Compensation Select to enable Reflected Energy Compensation, which improves the measurement accuracy if there is significant reflected energy, for example when measuring an object inside a furnace with the sensor positioned outside.
  • Page 12 Output Processing Averaging Period Select the required averaging period to smooth the output and slow down the sensor’s response time. Note: averaging prevents the sensor from following rapid temperature changes. Hold Mode With Peak or Valley Hold, the sensor will continue to display or output a peak or valley in the measured temperature for a certain time.
  • Page 13 Alarms The settings for the Alarm 1 and Alarm 2 relay outputs are configured individually. Manually Reset Alarms If an alarm has been triggered, this allows both alarms to be triggered again. Alarms will not be triggered again until they are reset, either automatically or manually.
  • Page 14 Alarms Alarm Operation with Hysteresis and Automatic Reset...

  • Page 15: Data Logging

    Data Logging Data Logging Settings Sample period The time, in seconds, between samples. Number of samples The number of samples the unit will collect before logging stops. Enter “0” to log data continuously until manually stopped. Enable Scheduled Start The sensor begins logging at the Date and Time specified. Logging can also be started and stopped manually.
  • Page 16 Using the Sensor as a Data Logger 1. Insert a MicroSD card into the holder on the circuit board inside the lid of the electronics module. 2. To retain the date and time when the unit is switched off, fit a battery to the holder on the circuit board inside the lid.

  • Page 17: Data Log Files

    MicroSD Card: Stores logged data. Includes SD Card adapter. Options An optional Calibration Certificate is available if ordered at the same time as the sensor. This UKAS traceable certificate shows the measured temperature at three points across the sensor's temperature range. Contact Calex for details.

  • Page 18: Installation

    Installation...

  • Page 19: Distance And Spot Size

    This is especially important for low- temperature targets. Using shields may help in this respect. For further information and assistance, contact Calex. Ambient Temperature The sensing head may be used between 0°C and 200°C ambient temperature.

  • Page 20: Mechanical Installation

    The electronics module may be used between 0°C and 60°C ambient temperature. Ensure the temperature of the electronics module remains stable, and allow 20 minutes for the unit to adjust to large changes in ambient temperature. Atmospheric Quality Smoke, fumes, dust or steam can contaminate the lens and cause errors in temperature measurement.

  • Page 21: Operation

    IMPORTANT: Ensure wiring is correct before switching the power on. Always switch off the power before connecting or disconnecting the sensor. Do not disconnect the touch screen circuit board from the main circuit board while the power is on. Wiring (-BRT models) When connecting several sensors in a single Modbus network, all of the sensors should be connected via a junction box to a single network bus cable, running from the furthest sensor to the Modbus Master.

  • Page 22: Maintenance

    In many cases, problems can be solved over the telephone. If the sensor is not performing as it should, try to match the symptom below to the problem. If the table does not help, call Calex for further advice.

This manual is also suitable for:

Fm2.2-301-mt-crt-3mFm2.2-301-mt-crt-5mFm2.2-301-mt-crt-10mFm2.2-301-mt-brt-3mFm2.2-301-mt-brt-5mFm2.2-301-mt-brt-10m ... Show all

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