Determines relative bar position via multi plexed scanned germanium diode array
LED Array Display of product pass line for correct alignment
Automatic Gain operating via edge control margin evaluation
Analog output for product position.
Digital outputs for product presence
Robust IP65 aluminum housing with water coolant chamber and separate air purge facility
General description
The Looper operates via internal microprocessor and a multiplexed scanned 20 Pixel InGaAs Diode Array segmented into
40 segments and scanned in 2 ms for exceptionally fast output. It provides both analogue output as well as displaying the products hot edge position via bar display.
Whilst normal Optical Position Scanners purely detect the product above a pre-set threshold as the Looper operates via a programmable control margin it ensures precise and repetitive positioned output regardless of the product's size or temperature. Hence, it is not adversely affected by lens contamination, hot scale, metalwork or steam in the field of view. As a consequence it provides very stable performance in difficult and variable environments such as found in Mill Stands that can defeat other Scanners.
Being a digital device, the Loopers' response time may be precisely set to accommodate black spots, etc. without detriment to its accuracy. Furthermore, the Looper detects the product edge precisely and repeatability regardless of the product size and changes in temperature over the range of 350°c -1200°C. Various analog outputs are available according to requirement.
The Looper is available for 24 VDC supply connection . Supplementary product detection is provided by both 8 Amp/24-240 VAC relay and NPN/PNP outputs (where 24 VDC supply) are provided.
Typical application
Metals Industry: Loop Control, Position of hot bar, rod or wire. Centering of Hot Strip. Edge detection & positioning.
Other Industries: Edge detection and positioning of hot product.
Housing specification &cooling
| Housing: | Aluminum AL6, Oven baked blue paint | Air Pressure: | 1 cu ft./min at 5 PSI for normal conditions |
| Housing Rating: | IEC IP66, DIN, 89011 | 5 cu ft./min at 15 PSI for severe conditions |
| Weight w/o Cable: | 1.9 kg (4.2lb) | Water Pressure: | 5 to 10 PSI, 40 PSI Maximum |
| Connector: | IP65 Plug/Socket | Water Volume: | Regulate between 0.2 - 0.3 liters/min. |
| Cable Length: | 2 m Standard up 15 m available | Water Temp.: | For Ambient Temperature up to 80°C use ambient water below 20°C |
| Cooling: | Air Cooled & Air Purged /Water Cooled & Air Purged | For Ambient Temperature above 80°C use cooling water chilled to 5°C |
Product Presence
Outputs (3 total) | Cradle Relay, SPNO, 250 VAC, 8A
NPN & PNP Outputs 400 mA, 45 V, 2A peak Opto-isolated Output 300 V, 150 mA | Supply voltage | 24VDC±10% |
| Power consumption | 2 watts |
| Analog Output | 0 -10 VDC Standard
(Optional: 4-20mA ) | Operating temperature | -10°C to +45°C without cooli ng up to 80°C with (20°C ) water cooling |
| Linear resolution | ±0.2% of full scale | Humidity | Max 90% RH (non condensing) |
| Response time | 10 millisec onds | Storage temperature | -20°C - +70°C |
Product Temperature
Limit | Minimum 350°C (1112°F)
Maximum 1200°C (2192°F) | Self check | remote self check facility |
| Sensing Elements | 20 Diode In GaAs Array | Array scan time | 2 ms |
