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Grade of Accuracy | Suitable Train Speed | ||||||||
Grade 0 | Measurement allowable speed is≤350km/h | ||||||||
Grade 1 | Measurement allowable speed is≤250km/h | ||||||||
Grade 2 | Measurement allowable speed is≤160km/h | ||||||||
Gauge Measurement Range and Tolerance | |||||||||
Items | Measurement Range (mm) | Maximum Tolerance | |||||||
Rail Gauge | 1410~1470 | ±0.25 | |||||||
Super-elevation measurement range | -185~ + 185 | --- | |||||||
Guard Rail Check Gauge | 1381~1401 | ±0.30 | |||||||
Guard Rail Face Gauge | 1338~1358 | ±0.30 | |||||||
Rail Parallelism and Over-height Tolerance | |||||||||
Level of Accuracy | Rail Parallelism | Over-height Maximum Allowable Tolerance at Zero | Over-height Display Number Maximum Allowable Tolerance | Over-height Turn Round Tolerance | Over-height display number Repeatability | ||||
Grade 0 | ≤0.10 | ±0.15 | ±0.30 | ≤0.30 | ≤0.10 | ||||
Grade 1 | ≤0.15 | ±0.20 | ±0.45 | ≤0.40 | ≤0.15 | ||||
Grade 2 | ≤0.20 | ±0.60 | ±1.20 | ≤1.2 | ≤0.40 | ||||
TGC-W-I/TGC-W-II/TGC-W-III Measuring Range: | ||||||
Rail Gauge | 1410 - 1470mm | Maximum allowable zero error | ±0.2mm | |||
Guard Rail Check Gauge | 1381 - 1401mm | Guard Rail Face Gauge | 1338 - 1358mm | |||
Maximum allowable error of indication | ±0.25mm | The allowable error of the super-high zero position | ±0.6mm | |||
Parallelism of the railing surface | ≤±0.2 mm | Ultra-high indication repeatability | ≤0.4 | |||
Horizontal (super high) | ±150 mm | Ultra-high U-turn error | ≤1.2mm | |||
Super high indication value allows maximum error: ±1.2mm | ||||||
GTGC-I-B2 Measuring Range | ||||||
Gauge | 1410~1470 mm | Maximum allowable error of indication | ±0.2mm | |||
Guard Rail Check Gauge | 1381~1401 mm | Guard Rail Face Gauge | 1338~1358 mm | |||
Maximum allowable error of indication | ±0.25mm | Parallelism of railing surface | ≤±0.15 mm | |||
Allowable error of super high zero | ±0.2mm | Horizontal (super high) | ±185 mm | |||
Ultra-high turning error | ≤0.4mm | Repeat-ability of ultra-high indication | ≤0.15 | |||
Maximum allowable error of ultra-high indication: ±0.45mm | ||||||






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