According to different gas on-site, the calibration in the lab translates the flow rate of actual gas on-site into the flow rate of air and then begins to calibrate the flow rate at present.
Therefore, when using the meter on-site, the meter displays mass flow or volume flow of actual gas.
When translating the flow rate of gas into the flow rate of air, there is a conversion coefficient table of different gas.
| NO. | Gas | Specific heat (Kal/g*℃) |
Density (g/l, 0℃) |
Conversion Coefficient |
| 0 | Air | 0.24 | 1.2048 | 1 |
| 1 | Argon (Ar) | 0.125 | 1.6605 | 1.4066 |
| 2 | Arsine (AsH3) | 0.1168 | 3.478 | 0.669 |
| 3 | Boron Tribromide (BBr3) | 0.0647 | 11.18 | 0.3758 |
| 4 | Boron Trichloride (BCl3) | 0.1217 | 5.227 | 0.4274 |
| 5 | Boron Trifluoride ( BF3) | 0.1779 | 3.025 | 0.505 |
| 6 | Borane (B2H6) | 0.502 | 1.235 | 0.4384 |
| 7 | Carbon Tetrachloride (CCl4) | 0.1297 | 6.86 | 0.3052 |
| 8 | Carbon Tetrafluoride (CF4) | 0.1659 | 3.9636 | 0.4255 |
| 9 | Methane (CH4) | 0.5318 | 0.715 | 0.7147 |
| 10 | Acetylene (C2H2) | 0.4049 | 1.162 | 0.5775 |
| 11 | Ethylene (C2H4) | 0.3658 | 1.251 | 0.5944 |
| 12 | Ethane (C2H6) | 0.4241 | 1.342 | 0.4781 |
| 13 | Allylene (C3H4) | 0.3633 | 1.787 | 0.4185 |
| 14 | Propylene (C3H6) | 0.3659 | 1.877 | 0.3956 |
| 15 | Propane (C3H8) | 0.399 | 1.967 | 0.3459 |
| 16 | Butyne (C4H6) | 0.3515 | 2.413 | 0.3201 |
| 17 | Butene (C4H8) | 0.3723 | 2.503 | 0.2923 |
| 18 | Butane (C4H10) | 0.413 | 2.593 | 0.2535 |
| 19 | Pentane (C5H12) | 0.3916 | 3.219 | 0.2157 |
| 20 | Carbinol (CH3OH) | 0.3277 | 1.43 | 0.5805 |
| 21 | Ethanol (C2H6O) | 0.3398 | 2.055 | 0.3897 |
| 22 | Trichloroethane (C3H3Cl3) | 0.1654 | 5.95 | 0.2763 |
| 23 | Carbon Monoxide (CO) | 0.2488 | 1.25 | 0.9940 |
| 24 | Carbon Dioxide (CO2) | 0.2017 | 1.964 | 0.7326 |
| 25 | Cyanide (C2N2) | 0.2608 | 2.322 | 0.4493 |
| 26 | Chlorine (Cl2) | 0.1145 | 3.163 | 0.8529 |
| 27 | Deuterium (D2) | 1.7325 | 0.1798 | 0.9921 |
| 28 | Fluoride (F2) | 0.197 | 1.695 | 0.9255 |
| 29 | Germanium Tetrachloride (GeCl4) | 0.1072 | 9.565 | 0.2654 |
| 30 | Germane (GeH4) | 0.1405 | 3.418 | 0.5656 |
| 31 | Hydrogen (H2) | 3.4224 | 0.0899 | 1.0040 |
| 32 | Hydrogen Bromide (HBr) | 0.0861 | 3.61 | 0.9940 |
| 33 | Hydrogen Chloride (HCI) | 0.1911 | 1.627 | 0.9940 |
| 34 | Hydrogen Fluoride (HF) | 0.3482 | 0.893 | 0.9940 |
| 35 | Hydrogen Iodide (HI) | 0.0545 | 5.707 | 0.9930 |
| 36 | Hydrogen Sulfide (H2S) | 0.2278 | 1.52 | 0.8390 |
| 37 | Helium (He) | 1.2418 | 0.1786 | 1.4066 |
| 38 | Krypton (Kr) | 0..0593 | 3.739 | 1.4066 |
| 39 | nitrogen (N2) | 0.2486 | 1.25 | 0.9940 |
| 40 | Neon (Ne) | 0.2464 | 0.9 | 1.4066 |
| 41 | Ammonia (NH3) | 0.5005 | 0.76 | 0.7147 |
| 42 | Nitric Oxide (NO) | 0.2378 | 1.339 | 0.9702 |
| 43 | Nitrogen Dioxide (NO2) | 0.1923 | 2.052 | 0.7366 |
| 44 | Nitrous Oxide (N2O) | 0.2098 | 1.964 | 0.7048 |
| 45 | Oxygen (O2) | 0.2196 | 1.427 | 0.9861 |
| 46 | Phosphorus Trichloride (PCI 3) | 0.1247 | 6.127 | 0.3559 |
| 47 | Phosphorane (PH3) | 0.261 | 1.517 | 0.6869 |
| 48 | Phosphorus Pentafluoride (PF5) | 0.1611 | 5.62 | 0.3002 |
| 49 | Phosphorus Oxychloride (POCI3) | 0.1324 | 6.845 | 0.3002 |
| 50 | Silicon Tetrachloride (SiCI4) | 0.127 | 7.5847 | 0.2823 |
| 51 | Silicon Fluoride (SiF4) | 0.1692 | 4.643 | 0.3817 |
| 52 | Silane (SiH4) | 0.3189 | 1.433 | 0.5954 |
| 53 | Dichlorosilane (SiH2CI2) | 0.1472 | 4.506 | 0.4095 |
| 54 | Trichlorosilane (SiHCI3) | 0.1332 | 6.043 | 0.3380 |
| 55 | Sulfur Hexafluoride (SF6) | 0.1588 | 6.516 | 0.2624 |
| 56 | Sulfur Dioxide (SO2) | 0.1489 | 2.858 | 0.6829 |
| 57 | Titanium Tetrachloride (TiCI4) | 0.1572 | 8.465 | 0.2048 |
| 58 | Tungsten Hexafluoride (WF6) | 0.0956 | 13.29 | 0.2137 |
| 59 | Xenon (Xe) | 0.0379 | 5.858 | 1.4066 |