The GFC-II dust calibration/verification device is designed according to JJG846-2015, and is used to calibrate and verify the readings of dust concentration detectors and sampling devices. The device can simulate different conditions such as concentration, pressure, and flow (constant flow, variable flow). It features a continuous adjustable air volume and stable control, making it suitable for a wide range of working conditions.

• Precise Regulation:The device allows for precise control and adjustment of dust concentration.
• Adopts Differential Pressure Principle:Utilizes the differential pressure principle to achieve accurate calibration.
• Easy to Operate: Simple operation with user-friendly interface.
• Durable:Reliable and durable for long-term use.

• Operating Conditions:20 ± 3℃
• Power Supply:380 V / 220 V, 50 Hz
• Power Consumption:2 kW
• Calibration Pressure Range:0 – 0.4 MPa, adjustable
• Flow Rate:> 140 L/min
• Accuracy:
  • The relative deviation of the average concentration of the sampling results for particulate matter in the range of 0.1 mg/m³ to 2000 mg/m³ should not exceed ±5%.
  • The relative deviation of the average concentration of the sampling results for gaseous pollutants in the range of 10 ppm to 2000 ppm should not exceed ±5%.
• Flow Rate Fluctuation:≤ 5 min (±5%)
• Repeatability:≤ 3% FS