Explosion-Proof Thread Connection NPT Rotary Flow Meter (JH-LZDC)

Metal Tube Rotameter

LZDC Series Variable-area Flow-meter can also be called metal-tube rotameter, Variable -Area Flow-Meter with Metallic Measuring Tube has the following advantages, simple construction, convenient maintain work, linear graduation, wide adaption which can be used to measure the flow of liquids and gas. Compared with glass-tube rotameter, this type of flow meter has the characteric of high temperature and pressure resistance, high security, easily read, and etc. It also can be used to measure the flow of corrosive medium and opaqueness medium. The meter pipe and flange are made of Icr18Ni9Ti or 18Ni12Mo2Ti. The floater is made of stainless steel. If the floater and lining are both corrosion resistant, it is made of PTFE.     
 
Working principle :
Variable -Area Flow-Meter with Metallic Measuring Tube is made up of two parts, flow sensor and flow indicator( picture 1) Floater is installed inside the conical measuring pipe. Because of the function of the fluid, it can be shifted freely up and down in the conical pipe. The biggest outer diameter of the floater and the annular area of the tapered tube change with the location of the floater. When the flow rate of the fluid is stable to one number, the floater is also in a dynamic balance. By the flow indicator connected with the taper measuring tube, the magnetic signal of the floater would be delivered by non-contact way, that is to say, the indicator can detect and deal with the flow value by the way of magnetism delivery and finally show the flow value by the pointer, which is showed on the dial of. At the same time, LCD can also read the instantaneous or the accumulated flow value, and output the standard two wire(4-20)mA signal / HART protocol.
 
 Features:
- Double lines LCD, showing both instantaneous and accumulated flow.
-  Broader ratio of flow rate 10:1.
- More stable signal output: construction of single axis and non-touching magnetic coupling.
-Fully metal-made body, suitable for high temperature, high pressure and corrosive media.
-Can be used even in flammable, explosive and harsh working environments. 
- Power supply: two-wire system, battery and AC for selection
-With functions of data recovery, backup and power failure protection
- New design for less pressure loss,  little maintenance and long life.
 
Technical parameters:

Meter Model	LZDC
Measuring medium	Liquids, gas, vapor
Measuring scope (convert to standard medium, 100%)	Water:20ºC		(10-300000)L/h, Particular requirement are acceptable
	Air:0.1013Mpa, 20ºC		(0.7-3000)m3/h, Particular requirement are acceptable
Turn Down	10:1
Accuracy class	on-site type	Mechanical pointer index		1.5, 2.0, 2.5
		Digital display(battery powered, service life: 2years)		1.0,1.5,2.0,2,5
	Remote Transmitting Type: show mechanical pointer index and Digital display (battery powered, service life: 2 years) at the same time.			1.0,1.5,2.0,2,5
Medium temperatures	on-site type	Mechanical pointer index		-80ºC-300ºC, Hightemperature:400ºC
		Digital display(battery powered, service life: 2years)		-40ºC-150ºC,
	Remote Transmitting Type: show mechanical pointer index and Digital display (battery powered, service life: 2 years) at the same time.			-40ºC-150ºC, Hightemperature:400ºC
Surrounding temperatures	on-site type	Mechanical pointer index		-40ºC-120ºC,
		Digital display(battery powered, service life: 2years)		-20ºC-60ºC
	Remote Transmitting Type: show mechanical pointer index and Digital display (battery powered, service life: 2 years) at the same time.			-20ºC-60ºC
Nominal pressure	DN15-DN50	4.0Mpa ( biggest: DN15: 32Mpa, DN 25: 25Mpa, DN50: 20Mpa)
	DN80-DN250	1.6Mpa(biggest:DN80: 10Mpa, DN100: 6.4Mpa,DN125:4.0 Mpa, DN150: 4.0Mpa, DN200: 2.5 Mpa, DN250: 2.5Mpa)
Measuring tube	Flange connection, standard:DIN2501, ANSI, HG20617/HG20615, according to order standard
Cable connector	M 20 ×1.5  1/2''G  1/2''NPT  3/4''G  3/4"NPT
Way of installment	vertical( end into top), horizontal ( left into right, right into left), top into end( piping), ( end into side, side into side)
Entrance straight pipe	≥5D
Exit Straight pipe	≥250mm
Protection Grade	IP65, IP67(others needs to be explained when ordering)
Anti-explosion Mark	Ex iaIICT1-T6
	Ex dIICT6