On-line Billet End Continuous Temperature Measurement

Overview

The system aims at the continuous temperature detection of the product
obtained from the continuous casting machine. The billets and their
surrounding environmental factors such as scale, steam, shielding and other
factors, are considered in the scheme design and equipment selection. The
accurate detection and real-time transmission of temperature during the
billets movement are also considered.



The equipment selection

Temperature detection

The billet temperature detection adopts the two-color integrated high-
temperature thermometer produced by Wuhan CenterRise M&C Engineering CO.,；
Temperature measurement range: 600°C - 1400°C; All components are
installed in a sturdy housing for continuous measurement. The optimized
treatment is taken for the problems that the semi-finished billets are
hindered by steam or other particles (scale) in the environment, and the
billets movement and the installation limited field of view. It provides
fast, real-time monitoring of high temperature billets.

Equipment cooling

Using vortex air cooling device, no power supply is needed, only dry air is
required, and the low temperature cooling gas below 0°C is output to cool
the three sets of temperature detection equipment.

Signal transmission

The bidirectional RS-485 communication of the measurement and control system
is used among multiple (multi-stream) measuring equipment or among the
measuring equipment and the secondary meter. The Industrial Ethernet or DP
network communication is used between the secondary instrument and the PLC.
The signal transmission equipment adopts the communication equipment
supporting multi-protocol network.

Purge device (optional)

When the environmental occlusion is severe, and the main occlusion is
gaseous substances such as steam, it is recommended to use a purging device.
The purging device uses dry air, and the solenoid valve controls the start
and stop.

Software

Adopting DataTemp software to remotely set and monitor the measuring
equipment. Adopting ScanTemp software to analyze and process the temperature
data and eliminate invalid signals. Through the software model, the
interference factors such as steam and iron scale can be overcome and the
actual temperature of the casting billets can be displayed in real time.



The features

Using Si/Si stack detector, high sensitivity

It is easy to use and has sturdy housing, which meets NEMA-4 standard

Bidirectional RS-485/DP communication (can be networked), supports up to 32
detection sensors at most

With user-defined alarm methods, analog and digital outputs are synchronized

Use protective devices and air cooling devices, can withstand high
temperature environment

Accurate measurement of moving targets or targets obscured by dust, smoke
and other particles in the atmosphere

Adopt passive cooling apparatus, high cooling efficiency and low maintenance

Use software to remotely set and monitor, analyze and secondary process the
data, and optimize occlusion measurement



The parameters

Measurement range：600℃～1400℃

Response time：10msc)

Spectral response：bicolor

Accuracy：±0.75%

Repeatability：±0.3%

Cooling air pressure：>0.5Kpa

Cooling air flow：24L/min

Max.temperature：165℃
,
Output signal：485 / DP / 4-20mA

Environment standard：NEMA4（IEC529，IP65）

Minimum Order: 1 sets

Click to Enlarge