Digital differential pressure meter LDPM-A20 is an advanced microprocessor based handheld unit. It is developed for the determination of pressure difference and can measure positive as well as negative pressures. Fabricated using new semiconductor based nm process, it provides stable and precise readings for different levels in and out of clean rooms.
| Measuring range | ± 500 Pa |
| Repeatability | ± 0.2 % FS |
| Resolution | 0.1 Pa |
| Sampling rate | 0.5 s |
| Operating temperature range | 0 °C ∼ 50 °C |
| Operational humidity | ˂ 85 RH |
| Display resolution | 320 x 240 |
| Power supply | 2400 mA Li-battery |
| Dimensions | 55 x 180 x 85 mm |
| Measuring range | 0 ∼ 125 Pa |
| Accuracy | 0 ± 0.2 Pa (liner error)<hr> ± 1 % |
| Gas Detected | O2 CH4 CO2 VOC CO H2S SO2 CL2 NO2 NH3 |
| Detection principle | Electrochemical principle (O2 CO H2S SO2 CL2 NO2 NH3) Infrared principle (CH4 CO) Photoionization principles (VOC) |
| Measurement Range | O2: 0-30% VOL, CH4: 0-50000 PPM, CO2:0-50000 PPM VOC:0-2000 PPM, CO:0-999 PPM, H2S: 0-200 PPM SO2: 0-25 PPM, CL2: 0-50 PPM, NO2: 0-100 PPM, NH3:0-100 PPM |
| Sampling method | Diffusion |
| Measurement principle | Electrochemical (oxygen, toxic gases), Catalytic combustion (flammable gases), Infrared principle (carbon dioxide gas) |
| Detector gas | Flammable gases, oxygen gas, toxic and harmful gases |
| Sampling Method | Diffusion | ||||||
| Working conditions |
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| Explosion proof grade | Exia II CT3 |
| Gas Detected | Nitrogen N2 |
| Detection principle | Electrochemical principles |
| Measurement Range | 0 to 100 %.Vol |
| Gas detected | NO<sub>2</sub> |
| Detection principle | Electrochemistry |
| Sampling method | Pumping suction, flow rate can up to 1L/min, ten grades of pumping suction for selection. |
| Sampling method | Diffusion |
| Sensor type | CO2: solid electrolyte sensor, O2：electrochemical sensor |
| Detection range | CO2：0.04 to 5.00 % and O2：0.0 to 30.0 % |
| Sampling | With internal sampling pump, flow rate is up to 1 L/min, ten grades of pumping suction for selection |
| Gas | Ethylene C2H4 |
| Measure Range | 0 to 1000 ppm |
| Measurement principle | Non-dispersive infrared (NDIR) |
| Gas Detected | SF6: 0 to 50 ppm range/ 0 to 1000 ppm range (as per req.) |
| Detection Uncertainty | <1.5 % F.S |
| Gas detected | Sulfur dioxide SO<sub>2</sub> |
| Detection principle | Electrochemistry |
| Sampling method | Pumping suction, flow rate can up to 1L/min, ten grades of pumping suction for selection. |
| Measurement range | 0 ppm ∼ 5 ppm |
| Resolution | 0.001 ppm ( 0 ppm ∼ 5 ppm ) |
| Temperature range | ˗ 40 °C ∼ 120 °C |
| Ozone measurement range | 0 ppm ∼ 5 ppm, 0 ppm ∼ 100 ppm, 0 ppm ∼ 300 ppm, 0 ppm ∼ 600 ppm ( Optional ) |
| Flow rate | 1.5 L/min |
| Accuracy | 0.01 ppm or 3 % of reading |
| Ozone measurement range | 0 ppm ∼ 100 ppm/ 0 ppm ∼ 1000 ppm |
| Flow rate | 1 L/min |
| Accuracy | 0.01 ppm |
| Temperature Measurement Range | -10℃ to 60℃ |
| Temperature Resolution | 0.1°C |
| Temperature Accuracy | ± 1.5℃ |
