VDT - Vapour Deposition

AMETEK Land Fixed Spot Non-contact Thermometers / Pyrometers - VDT - Vapour Deposition
Non-contact infrared thermometer custom-designed for accurate preform temperature measurements in optical fibre manufacture.
  • Overview +


    Optimised for precise preform temperature control in vapour deposition processes, AMETEK Land’s Vapour Deposition Thermometer delivers a critical measurement for production of low-loss, high-bandwidth optical fibre.

    VDT enables exact sighting onto the rotating preform for an accurate surface temperature reading, critical in controlling fibre strength and transmission quality. This ensures an efficient, high-yield process with less costly scrap product.

    Only a non-contact infrared thermometer technology is able to achieve the precise surface temperature measurements required for the process. VDT’s 4.8-5.2µm waveband measurement means the preform is opaque and the measurement unaffected by flames, ensuring exceptional accuracy.

    Able to operate as a standalone device or as part of a multi-thermometer system linked by our System 4 Landmark Graphic signal processor, VDT is ideal for vapour deposition processes in the glass industry.

    OPTIMISED FOR YOUR PROCESS
    With measurement ranges of 1000°C (2500°F) to 1800°C (4500°F), and a small target capability given by focusable 100:1 optics, VDT is custom-designed to sight onto the rotating preform with exceptional accuracy.

    HIGHLY ACCURATE MEASUREMENTS
    Cost-effective, productive manufacture of high-quality optical fibre requires precise control of preform temperature in vapour deposition processes. With a non-contact measurement accurate to <1°C (<2°F), VDT provides the accuracy needed to ensure efficiency and a superior product.

    FLEXIBLE, MODULAR DESIGN
    VDT is compatible with our extensive range of System 4 mounting accessories. It also uses industry standard outputs to suit any process monitoring, recording or control system, making it easy to install in your existing systems.

    VDT is AMETEK Land’s non-contact thermometer for accurate temperature control in vapour deposition processes.
  • Specifications +


    Vapour Deposition Thermometer - Stand Alone Thermometer

      Model: VDT-U 1000/2500C VDT-U 1800/4500F
    Temperature Range: 1000 to 2500°C  1800 to 4500°F 
    Wavelength: 4.8 to 5.2μm
    Averager response time: Adjustable 100ms to 5s (0 to 95%) 
    Peak Picker: Adjustable 1.5 to 30%/s decay  
    Emissivity: Adjustable 0.10 to 1.00 
    Output: 4 to 20mA 
    Sighting:
      Target size:
      Magnification:
      Eye relief:
    6°, through the lens
    >98% of energy within graticule image
    1.8x 
    30mm  1.2in 
    Field Of View (Nominal): 100:1 
    Minimum Target Size: 3.5mm diameter  0.13in diameter 
    Focus Range: 0.35m to 1m (Variable focus)  13.6in to 39.4in (Variable focus) 
    Accuracy
      Repeatability:


      Absolute:
     
    <1°C  <2°F 
    0.6%K 
    Stability
      Temperature:


      Time:
    <0.025%T(K)/K 
    2°C/year 4°F/year 
    Power Supply: 23 to 48V d.c., <200mA
    Vibration: 3g any axis, 10 to 300Hz
    Humidity: 0 to 99% non condensing
    Sealing: To IP65 requirements  To NEMA 4X requirements 
    Ambient Temperature
    Specified:
    Operating:

    0 to 70°C
    -10 to 80°C 

    32 to 158°F
    14 to 176°F 
    CE: EN 50-082-2 (immunity), EN 50-081-1 (emission), IEC 1010 (safety) 

    Vapour Deposition Thermometer  System - Single and Multiple Thermometers with LANDMARK GRAPHIC Signal Processor

    Model: VDT-S 1000/2500C VDT-S 1800/4500F
    Temperature Range: 1000 to 2500°C 1800 to 4500°F
    Wavelength: 4.8 to 5.2μm
    Averager Response Time: 100ms
    Output: 4 to 20mA
    Sighting:
    Target Size:
    Magnification:
    Eye Relief:
    6°, through the lens
    >98% of energy within graticule image
    1.8x
    30mm 1.2in
    Field Of View (Nominal): 100:1
    Minimum Target Size: 3.5mm diameter 0.13in diameter
    Focus Range: 0.35m to 1m (Variable focus) 13.6in to 39.4in (Variable focus)
    Accuracy
    Repeatability:
    Absolute:

    1K
    0.5%K
    Stability
    Temperature:

    Time:

    <0.02%K/K
    2°C/year 4°F/year
    Power Supply: 23 to 48V d.c., <200mA
    Vibration: 3g any axis, 10 to 300Hz
    Humidity: 0 to 99% non condensing
    Sealing: To IP65 requirements To NEMA 4X requirements
    Ambient Temperature
    Specified:
    Operating:

    0 to 70°C
    -10 to 80°C

    32 to 158°F
    14 to 176°F
    CE: EN 50-082-2 (immunity), EN 50-081-1 (emission), IEC 1010 (safety)
    SPECIFICATIONS – REF. ADS002/0702

    For further technical specification information please refer to the specific product brochure within the Documentation section below.
     

  • Documentation +

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