Direct-reading Dust Meter
1. Equipment Name and Quantity:
Direct-reading Dust Meter
2. Function and Performance Requirements of the Direct-reading Dust Meter:
*2.1 The direct-reading dust meter is used for the rapid measurement of respirable dust and total dust concentration in workplaces such as coal mines, with direct reading capability;
2.2 It features automatic detection without moving the sampling filter membrane.
3. Main Configuration of the Equipment
Basic components of the direct-reading dust meter (including but not limited to the following configurations):
3.1 Direct-reading dust meter: 1 unit;
3.2 Relevant accessories and tools: 1 set.
4. Main Technical Parameters:
4.1 Measurement range: 0.2–1000 mg/m3, relative measurement error: ±15%;
4.2 Stability error: ±2.5%;
4.3 Sampling flow rate: 15 L/min, relative sampling flow error: ±2.5%;
4.4 Sampling flow stability: ±5%;
4.5 Sampling time error: when sampling time ≤1 min, relative error ±2%; when sampling time >1 min, error ±3 s;
4.6 Continuous operation time: ≥100 min;
4.7 Explosion-proof type: Mine intrinsic safety type, explosion-proof mark: ExibⅠMb;
4.8 Dimensions: ≤280 mm × 185 mm × 165 mm;
4.9 Weight: ≤4 kg;
*4.10 Sampling efficiency complies with the BMRC curve.

Zhengzhou Aidi produces direct-reading dust meters, supplies coal drill cuttings desorption instruments, deep-hole sampling devices, pressure gauges, geological exploration desorption instruments, borehole flow meters, mine extraction and outburst prevention equipment, true density meters for coal, gas content meters, automatic initial gas emission speed meters, diffusion speed meters, gas parameter meters for coal extraction pipelines, borehole coal powder circulation devices