1、 Product Overview
Metal tube float (metal rotor) flowmeter is a commonly used variable area flow measurement instrument in industrial automation process control, which has the characteristics of small volume, large detection range, and easy use. It can be used to detect the flow rate of various liquids and gases, especially suitable for measuring the flow rate of low velocity and small flow media.
The metal tube float (metal rotor) flowmeter consists of a measuring tube, a float, and an indicator. The float moves freely up and down in the measuring tube, changing the flow area in the pipeline. As the flow rate changes, the vertical position of the float in the measuring tube also changes accordingly. The position of the float is accurately transmitted to the dial of the indicator through a magnetic transmission system, indicating the change in flow rate value.
The LZ series metal tube float (metal rotor) flow meter has local indication and intelligent remote transmission types, with pointer display of instantaneous flow, LCD display of instantaneous and cumulative flow, standard 4-20mA current output, upper and lower limit alarm, HART protocol output and other functions, providing a wide selection space for different users.

2、 Main features
● Reliable work, minimal maintenance, and long service life
A wider range ratio of 1:10
All metal structure, sturdy and stable, suitable for high temperature, high pressure, and highly corrosive media
Explosion proof design structure suitable for flammable and explosive hazardous environments
New magnetic coupling sensor ensures stable and reliable signal transmission
Suitable for measuring the flow rate of media with low flow rate and small flow rate
● Magnetic filter can be installed
Intelligent optional on-site instantaneous and cumulative flow display
● Optional two-wire system and battery power supply mode
● Can be designed with insulation and jacket

3、 Technical parameters

4、 Measurement range (metal tube float (metal rotor) flowmeter)

orifice (mm)	Flow range				Maximum pressure loss (kPa)		accuracy grade
	Water L/h		Air m ³/h
	Common	Anticorrosive type	Common	Anticorrosive type	water	gas
15	2.5~25	2.5~25	0.07~0.7	0.07~0.7	6.5	7.1	2.5
	4.0~40	4.0~40	0.11~1.1	0.11~1.1		7.2
	6.3~63	6.3~63	0.18~1.8	18~1.8	6.6	7.3
	10~100	10~100	0.28~2.8	0.28~2.8		7.5
	16~160	16~160	0.4~4.0	0.4~4.0	6.8	8.0
	25~250	25~250	0.7~7.0	0.7~7.0	7.2	10.8
	40~400	40~400	1.0~10	1.0~10	8.6	10.0
	63~630	_______	1.6~16	______	11.1	14.0
25	100~1000	63~630	3.0~30	1.6~16	7.0	7.7
	160~1600	100~1000	4.5~45	3.0~30	8.0	8.8
	250~2500	160~1600	7.0~70	4.5~45	10.8	12.0
	400~4000	250~2500	11~110	7.0~70	15.8	19.0
50	630~6300	400~4000	18~180	11~110	8.1	8.6
	1000~10000	630~6300	25~250	18~180	11.0	10.4
	1600~16000	1000~10000	40~400	25~250	17.0	15.5
80	2500~25000	1600~16000	60~600	40~400	8.1	8.0
	4000~40000	2500~25000	100~1000	60~600	9.5	13.0
100	6300~63000	4000~40000	200~2000	100~1000	10.0	11.0
	10000~100000	------	300~3000	-----

Note 1:Flowmeters with measurement ranges not listed in the table can be processed according to requirements
Note 2:Specially calibrated as level 1.5
Note 3:Special specifications can be customized

5、 Body connection method

6、 Alarm switch
Technical parameters and wiring of electric remote transmission signals
Pre value alarm switch sensor
The B1, B2, B3, B4 indicators can be equipped with 1 or 2 pre-set alarm switch sensors.

Two wire switches require connection to WE77 transistor amplifiers or equivalent products to output switch signals.
The three wire switch requires a voltage supply of 10-30VDC, and the switch signal is output through a built-in signal amplifier for direct application with the PLC.

7、 Electrical wiring diagram


8、 Magnetic Filter Size Table