Float Flowmeter: The Tool Designed for Precision Flow Measurement

Float flowmeter, also known as a rotameter, is a device used to measure the flow rate of liquid or gas in a closed conduit. It operates on the principle of a float, usually a tapered, cylindrical, or spherical object, which rises or falls within a vertically oriented, transparent tube according to the fluid flow rate. The flow rate can be determined by the position of the float within the tube, as it reaches a balance between the upward force exerted by the fluid flow and the downward gravitational force on the float. Graduations along the tube allow for the direct reading of the flow rate. Float flowmeters are known for their simplicity, reliability, and versatility, making them suitable for a wide range of applications, including chemical processing, water treatment, and research laboratories. They are appreciated for their ability to provide accurate measurements without the need for external power, and they can accommodate various types of fluids by simply changing the float material to match the fluid characteristics.

Specifications
Video

Specification

Download Data Sheet

Table 1: Size Table of Float Flowmeter
Model	Interface diameter	Measurement range	D (mm)	d (mm)	H (mm)	Height With Flange
LZS-15	DN15	4–40 I/h	53	20	230	285
		6–60 l/h
		10–100 I/h
		16–160 I/h
		25–250 I/h
		40–400 l/h
		60–600 I/h
		100–1000 I/h
LZS-20	DN20	40–400 I/h	53	25	225	286
		60–600 I/h
		100–1000 I/h
LZS-25	DN25	100–1000 I/h	62	32	230	290
		160–1600 I/h
		250–2500 I/h
		300–3000 l/h
LZS-32	DN32	0.4–4 m³/h	73	40	287	357
LZS-32	DN32	0.6–6 m³/h	73	40	287	357
LZS-40	DN40	0.4–4 m³/h	103	50	340	415
		0.6–6 m³/h
		1–10 m³/h
LZS-50	DN50	0.4–4 m³/h	104	63	340	425
		0.6–6 m³/h
		1–10 m³/h
		1.6–16 m³/h
LZS-65/80	DN65/80	4–16 m³/h	127	75	425	525
		5–25 m³/h
		8–40 m³/h
		12–60 m³/h
LZS-100	DN100	18–90 m³/h	215	110	555	690
LZS-100	DN100	20–120 m/h	215	110	555	690
LZS-125 LZS-150	DN125 DN150	20–120 m³/h	250/280	140/160	550	585
		25–150 m³/h
		30–180 m³/h