Gauge Type

Coating Measurement System

Measurement Principal : X-Ray Backscatter and FluorescenceM

Source : Oxford X-Ray Source

Detector : Ion Chamber

Measurement Area : Diameter of 40 mm

Air Gap : 10mm

Operating Temperature : 0-70O Celsius

Zinc : 0-350 g/m sq

Gal-volume : 20-150 g/m sq

Tin : 1-40 g/m sq

Iron /Zinc : 10-200 g/m sq

Aluminum : 30-120 g/m sq

Nickel/ Zinc : 5-250 g/m sq

Terne : 1-40 g/m sq

Accuracy (Static) : 0.10 % of the real total coating weight of both surfaces

Means response Time : 100 ms.

Reproducibility : With in + 0.25 % of nominal coating weight or + 0.25 GSM

Overall Instability (drift) : 0.2 % in 8 hors at 100 GSM

Radiometric Noise (2-Sigma value –500 ms Integration time) : At 50 g/m sq + 0.20 g/m sq

Measurement Stabilit : 0.2% (average over 4 hours, under constant ambient conditions and without standardization or recalibration)

Measurement Time constant : 40 ms Minimum

Ambient head temperature : 55 ºC

Scanning Speed : 127 mm (5 inch) per sec.

Head Position Precision : 1.0 mm

System Printer : Printout of any selected display page with color printer, automatic or manual printout at coil end.

Peripherals : i) 1 water cooling unit for sensor heads ii) Pneumatic control box

System Documentation : All technical and Operator manual, 3 sets

Gauging System Type : XRF-3000 X-Ray Fluorescence Coating Weight Gauge.

Coating to be measured : Zinc Or Zinc/ Aluminum

Substrate : Steel 0.4 to 4.0 mm

Coating weight measurement range (single side) : 0 – 350 GSM

Method of coating application : Hot Dip Galvanizing

Proposed of Scanner : In Cooling Section

Scanner Type : O-Frame 1.230 mm strip width typically

Scanning speed : Maximum 150 mm/s

No. Measuring heads : Two, one top and one bottom side

Source type (One per Head) : DC X-Ray Source, 30 KV

Detector Type : Ion Chamber

Measuring Gap : 40 mm

Water Cooling Jacket : Integrated.