Understrip Thermometer

Understrip Temperature Measurement System

Understrip ThermometerFor the steelmaker involved in the hot rolling of steel slabs or billets, knowledge of steel temperature is vitally important. Accurate measurement of the steel temperature can be invaluable in determining the final metallurgical properties and quality of the metal.
Land ruggedized fibroptic systems located at different positions under the mill roller table view the target between the rolls and provide continuous accurate measurement, without contact, of the scale-free metal surface.

Understrip Thermometer Features & Benefits

  • Simple installation with non critical positioning.
  • Quick, simple no-tools probe removal.
  • Electronics positioned remotely at a safe distance.
  • Minimal services – only clean air supply for purging. No water cooling required.
  • The thermometer interfaces with a Landmark Graphic signal processor.
  • A range of thermometers are available depending on the temperature range required.


Understrip Thermometer Hot Roll Mill Understrip Thermometer Installation Understrip Thermometer Housing

The Understrip Thermometer systems are easy to install and designed for trouble-free operation. A low cost sighting tube/purge unit houses a readily demountable modular fibre optics probe. The associated electronic amplifier unit, located remotely, is linked by a sealed fibre optics light guide.

An air line, connected to the sighting tube, to provide a purged sight path for the thermometer, is the only service required by the thermometer optic head.

The electronics unit is provided with electrical power from the associated System 4 Landmark Graphic signal processor. The processor provides electronic signal treatment of the thermometer output allowing averaging, peak picking or sample and hold outputs and temperature display. An optional serial communications facility gives digital RS232C or RS422A outputs and allows access for system parameter adjustments from a remote computer.


Low Temperature (C): 50 High Temperature (C): 2600
Technical Details
Model Temperature Range Wavelength
M1 600/1600CL
M1 800/2600CL
600 to 1600 °C
800 to 2600 °C
M2 300/1100CL 300 to 1100 °C 1.6 µm
M3 50/250CQ 50 to 250 °C 2.1 µm
R1 600/1600CL
R1 1000/2600CL
600 to 1600 °C
1000 to 2600 °C
0.85 to 1.1 µm
Laser targeting versions of these thermometers are also available.
Optics: A10 – 100mm focus
A25 – 250mm focus
A50 – 500mm focus
Installation: Sighting tube clamped to suitable mounting.
No-tools detachable probe locates in sighting tube.
Amplifier unit housed in 280×250/110mm enclosure, is located remotely from hostile environment. The Landmark® Graphic/Classic signal processor can be located in the control room.
Download Datasheet
Understrip Thermometer

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