| Verification caliber | DN15-50 | 
| Capacity | DN15 10pcs、DN20 8pcs、DN25 6pcs、 DN32 2pcs、DN40 2pcs、DN50 1pcs | 
| Measurement Range | (0.06~40)m³/h | 
| Electronic Scale | ①Max=30kg,6000e Max=600kg,3000e | 
| Device Expansion Uncertainty | Master meter method: < 0.5 % Start-stop weighing method: < 0.2 % (k = 2) | 
| Heat Meter Type | Ultrasonic heat meter Heat meter | 
| constant temperature bath | Integrated high/low temperature bath Measuring range: 0 °C – 100 °C Temperature fluctuation: ±0.005 °C per 10 min | 
| constant - temperature standard | Standard platinum resistance thermometer (SPRT) constant temperature bath | 
| Temperature difference | Horizontal temperature difference: ≤ 0.006 °C Vertical temperature difference: ≤ 0.006 °C | 
| Material of the device | Made of high-quality industrial aluminum and stainless steel 304,durable and excellent appearance | 
| Temperature control range | Ambient~55 °C; heat-up time for the heat meter from 25°C to 55°C: 4 h |