Skip to content

FLT5A - Float Line

AMETEK Land Fixed Spot Non-contact Thermometers / Pyrometers - FLT5A - Float Line
Accurate and flexible infrared thermometer measurements for measuring glass surface temperature in the tin bath and annealing lehr on float lines. 
  • Overview +

    The FLT5A is a standalone thermometer offering precision measurement of the surface temperature of glass float lines, ensuring consistently high product quality throughout the process.

    Offering excellent precision and long-term stability, the FLT5A’s extensive measurement range removes the need to use a range of temperature monitoring instruments on the float line, simplifying system integration and operation.

    High measurement precision is achieved using AMETEK Land’s leading-edge infrared technology, which gives a highly accurate, non-contact measurement with 1m fixed-focus 50:1 optical field of view. 

    Custom-designed for use in float lines in the glass production, the FLT5A is suitable for use through the process: from the initial floating and forming in the bath, to the cooling and annealing sections in the tin bath and annealing lehr.

    Providing a spectral response from 4.8 to 5.2µm, the FLT5A measures from 250 °C / 482 °F to 1100 °C / 2012 °F. This means the thermometer can be used at more points on the line, reducing the number of different types of device needed.

    With low ‘penetration’ into the glass, the thermometer’s 50:1 optics and fixed 1m focus ensure 98% energy from the 20mm target spot. This gives precise, stable results for surface temperature, even in conditions of high atmospheric humidity.

    The 4-20mA loop-powered thermometer is quickly demountable from a cooling jacket, and is compatible with an extensive range of mountings and accessories – including System 4 range – enabling use in harsh conditions.

    The FLT5A is AMETEK Land’s infrared thermometer dedicated to the tin bath and annealing lehr on glass float line applications.

  • Specifications +

    Range 250 to 1100 °C 
    Spectral Response  4.8 to 5.2µm 
    Field of View  50:1 (98% energy) at 1m focus (fixed) 
    Output  4 to 20mA current loop
    Response Time (0-95%)  1 to 10 seconds adjustable
    Emissivity Adjustment  0.3 to 1.10 in 0.01 steps 
    Resolution 0.2 °C 
    Stability  0.023% of span per 1 °C change in ambient temperature 
    Accuracy (Absolute)  0.5%T (K) + 1 °C 
    Ambient Limits 0 to 60 °C specified; -10 to 80 °C operating 
    EMC  EN 50 082-2 (immunity); 
    EN 50 081-1 (emission);
    IEC 1010 (safety) 
    Sealing to requirements of IP65/NEMA 4X 
    Vibration  3g (10 to 300Hz) 
    Power Supply  12 to 45V d.c.
  • Documentation +