HotSpotIR

Supercalendar Roll & TransportBeld


Hotspot Detection for Continuous Process Monitoring and Quality ControlAs production rates and temperatures rise, the possibility of overheating a
roll, causing a blister or losing the coating increases. Coated rolls can be repaired, but the cost can be tens of thousands of dollars and the associated downtime further adds to this. The coated rolls rotate at high speeds and some of the developing hot spots can be quite tiny so it is impossible to detect these developing problems by using traditional methods.“One undetected hot spot can cause $40,000 to $100,000 in roll damage and repair.

Key Features

  • Fast Scan Speed of up to 100Hz
  • Outputs peak temperature for each scanline
  • Laser Alignment allows easy setup
  • Wide scan angle of 80°
  • Simple, reliable alarm processing without the need of software
  • Single cable connection between scanner head and processor
  • Compact size, ideally suited to restricted access locations

Other HotSpotIR Applications:

  • Storage of Materials
    • Coal
    • Chemicals
    • Powders
  • Transport of Materials
    • Conveyors
    • Railcars
  • Non-Woven Materials
    • Process Control
  • Refractory
    • Boilers
    • Process Heaters
    • Rotary Kilns
    • Torpedo Cars

The Problem
As production rates and temperatures rise, the possibility of overheating a roll, causing a blister or losing the coating increases. Coated rolls can be repaired, but the cost can be tens of thousands of dollars and the associated downtime further adds to this. The coated rolls rotate at high speeds and some of the developing hot spots can be quite tiny so it is impossible to detect these developing problems by using traditional methods.

The Challange
A method of detecting these developing hot spots and sending an alarm to the process operators would prevent these costly shutdowns. Traditional methods such as visual inspection and single point pyrometers do not have the speed nor the resolution to meet the application demands.

The Solution
The HotSpotIR High-speed Scanning System is used to detect these emerging hot spots. The HotSpotIR samples up to 100,000 high resolution temperature points every second. The hottest point measured is updated every 0.01 seconds. The system covers a measuring range of 68 °F to 482 °F (20 °C to 250 °C).

The HotSpotIR is easy to install, a quick release mounting bracket allows quick fitting and maintenance. The mounting bracket is keyed so that the exact same alignment is achieved when returning it to the mounting. A single, quick release cable connects the sensor to the alarm processor.

The HotSpotIR processor provides high speed alarm contacts that are sent to the control room for operator attention.

Direct Control System Integration
Temperature measurements generated by the high-speed scanner are sent to a dedicated processor. The processor produces an alarm output set by the user to their desired value. This can be sent directly to the plant control system.

Designed for Industrial Environments
The HotSpotIR head is extremely compact and has a minimized depth and base “footprint” for installation in restricted spaces. A durable sapphire window provides reliable protection for the system optics. A built-in laser targeting system aids alignment on to the target.

Temperatures
Low Temperature (C): 20 High Temperature (C): 600
Technical Details
  HotSpotIR Scanner Head
Model LSP-60 LSP-61 LSP-62
Measurement Range 20 to 250°C 50 to 400°C 100 to 600°C
Speed of Response ≤10?s ≤5?s
Scan Speed 10 to 100Hz
Scan Angle 80°
Repeatability ± 0.5°C / 0.9°F
Emissivity 0.20 to 1.00
Field of View 1200mm / 47.2″ Fixed Focus
Target distance > 1200mm / 47.2″, FOV 100:1
Ambient Temperature 5 to 60°C / 41 to 140°F (specified)
5 to 70°C / 41 to 158°F (operating)
Dimensions 206 x 209 x 100mm / 8.1 x 8.2 x 3.9″
Alignment Class 2, max. output 1.0 mW at 635nm, IEC60825-1:2001
Environmental Sealing IP65
EMC EN 61320:1999 Class A (immunity and emission); IEC 1010 (safety)

 

Download Datasheet
HotSpot IR Conveyor
HotSpot IR Supercalendar Roll

 

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