Flowmeter EMMETI Rotametr 0–4 L/min, EMMETI 1306306

EMMETI Rotametr 0–4 L/min is a mechanical inline flowmeter designed to provide a clear visual indication of instantaneous liquid or gas flow rates between 0 and 4 litres per minute. The device uses a graduated transparent tube and a movable float to show the current flow value directly, without electronics or power supply. Its straightforward construction makes it suitable for basic process monitoring, laboratory setups, HVAC circuits and other small-scale fluid control applications where a simple, reliable measurement is needed.

Advantages

The rotameter offers immediate, easy-to-read flow readings through a graduated tube and float, enabling fast verification of operating conditions. Its mechanical design ensures operation without external power and reduces sensitivity to electrical interference. The unit is compact and lightweight for inline installation and requires minimal maintenance thanks to few moving parts. The visible scale supports quick adjustments and routine checks by technical staff.

Suitable for

• Laboratory flow monitoring and experiments
• HVAC balancing and small bore piping systems
• Process control where visual flow confirmation is sufficient
• Bench-scale equipment and pilot plants

Key specifications

• Flow range: 0 to 4 litres per minute
• Measurement principle: variable area flowmeter (float in graduated tube)
• Readable visual scale for instantaneous flow
• Mechanical operation; no power supply required
• Compact inline construction suitable for small-diameter piping

How to use

Install the rotameter in the fluid line according to the direction of flow indicated on the body, ensuring the unit is mounted vertically so the float can move freely. Before commissioning, flush the line to remove particulates that could affect float movement. During operation, read the float position against the graduated scale to determine instantaneous flow. For gases, account for density differences if precise volumetric flow correction is required. Periodically inspect for deposits on the tube and clean as needed to maintain accurate readings.

Usage recommendations

Use the rotameter in clean, particle-free fluids or with a suitable filter upstream. Avoid mounting at an angle; vertical orientation improves accuracy. For measurements that require higher precision or compensation for temperature and pressure, consider complementary instruments or calibration against a reference standard.