In order to achieve consistent product quality on glass float lines, the temperature across the width of the glass must be kept as uniform as possible. This applies throughout the process: from the initial floating and forming in the bath, to the cooling and annealing sections in the lehr.
The Land FLT5/A is designed specifically for use in float lines, measuring glass surface temperature in the range 250 to 1100°C, with excellent precision and long-term stability.
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The thermometer is quickly demountable from a cooling jacket and is compatible with a comprehensive range of mountings and accessories, enabling use in hostile of environments. The thermometer operates on a two-wire, 4 to 20mA current loop and is compatible with industry-standard indicators and recorders.
250 to 1100°C temperature range
4.8 to 5.2µm spectral response
50:1 optical field of view
Fixed focus at 1 meter/39in, with 98% energy guaranteed from within the 20mm/0.8in target spot
Compatible with full range of Land System 4 mountings and accessories
250 to 1100°C
Spectral response :
4.8 to 5.2µm
Field of view :
50:1 (98% energy) at 1m focus (fixed)
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
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
EN 50 082-2 (immunity);
EN 50 081-1 (emission);
IEC 1010 (safety)
to requirements of IP65/NEMA 4
3g (10 to 300Hz)
Power supply :
12 to 45V d.c.
A Literature download on this product is available here Last Modified (25/07/02) (137KB).