LML-1 Wet Gas Flow Meter

The effective volume of each gas chamber in a wet gas flow meter is controlled by the pre-filled water level in the meter. Therefore, during use, it is necessary to check whether the water level reaches the predetermined position. During installation, the instrument must be kept level.
Wet gas flow meters are divided into two types: one is made of brass, generally used for non-corrosive gases. The other is made of corrosion-resistant stainless steel and can measure corrosive gases. The LMF/LML series wet gas flow meters are one of the commonly used instruments in laboratories. They offer high accuracy when measuring the total volume of gas, especially at low flow rates where the error is minimal. They can be directly used to measure gas flow rates or serve as standard instruments to calibrate other flow meters.
The LML-1 model is a standard type made of brass material, typically used for non-corrosive gases. The LML-1 wet gas flow meter is a commonly used instrument in laboratories. It provides high accuracy when measuring the total volume of gas, with minimal error at low flow rates. It can be directly used to measure gas flow rates or serve as a standard instrument to calibrate other flow meters. The effective volume of each gas chamber is controlled by the pre-filled water level in the meter, so during use, it is necessary to check whether the water level reaches the predetermined position. During installation, the instrument must be kept level.
The LML-1 wet gas flow meter is a conventional gas flow instrument used in laboratories. It mainly consists of a drum-shaped housing, a rotating drum, and a transmission counting mechanism, as shown in the working principle diagram: The rotating drum is composed of a cylinder and four curved blades, forming four chambers of equal volume. The lower half of the drum is submerged in water. The water filling level is indicated by a water level indicator. Gas enters each chamber sequentially from the inlet pipe in the middle of the back and is discharged from the top, forcing the drum to rotate. The number of rotations is counted by a gear mechanism through a pointer or mechanical counter. Alternatively, the drum's rotations can be converted into electrical signals for remote display.
LML-1 Wet Gas Flow Meter Technical Parameters
Model: LML-1
Flow per drum rotation: 0.002 m³
Rated flow rate: 0.2 m³/h
Flow recording: 100 m³
Excess flow rate: 0.3 m³/h
Minimum scale value: 0.1 × 10⁻⁴ m³
Normal pressure value: 1000 Pa
Accuracy at rated flow rate: ±1%

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