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DESCRIPTION

Basic Info.

Model NO.	LDF-WJ
Measuring Media	Gases , Liquids , Steam
Certification	CE, RoHS, ISO
Power Supply	24VDC , 220VAC , Battery Operated
Temperature	-40-350 C
Pressure	1.6MPa-4.0MPa
Display	N/a,; LCD Display
Output Signal	4-20mA , Pulse , Hart , RS485
Transport Package	Standard Export Package
Specification	50*30*30
Trademark	Huadian
Origin	China
HS Code	9026100000
Production Capacity	500pieces/Week

Product Description

Digital RS485 HART 4~20mA DN15-DN100 Water Liquids Vortex FlowMeter LDF-WJThe vortex flow meter produces a velocity flow meter based on the Karman vortex principle for measurement and metering of conventional gases, vapors and liquids. The vortex flow sensor has high precision and a wide range ratio. It has no moving parts in use, which can improve mechanical stability and reduce maintenance. Vortex is almost unaffected by the temperature, pressure and composition of the medium when measuring the working volume, so it is convenient for the calibration production of the instrument. Therefore, the vortex flow sensor is widely used in production and life.
Technical Parameters
Main technical parameter list

Nominal diameter(mm)	15,20,25,40,50,65,80,100,125,150,200,250,300,(300~1000 Plug-in)
Nominal pressure(MPa)	DN15-DN200 4.0(>4.0 Agreement supply),DN250-DN300 1.6(>1.6 Agreement supply)
Medium temperature(ºC)	Piezoelectric:-40~100,-40~250,-40~330;Capacitive: -40~400,-40~500(Agreement supply)
Body material	1Cr18Ni9Ti,(available under other materials agreement)
Allowable vibration acceleration	Piezoelectric:0.2g Capacitive:1.0~2.0g
Accuracy	±1%R,±1.5%R; Plug-in:±2.5%R,
Range	1:6~1:25
Supply voltage	sensor:DC 24V(DC); Battery powered:3.6V battery
output signal	Square wave pulse (excluding battery-powered type): high level ≥ supply voltage minus 1V, low level ≤ 1V; current: 4 ~ 20mA
Pressure loss coefficient	Meet the JB/T9249 standard Cd ≤ 2.4
Explosion-proof mark	EXiaIICT4 Ga
Intrinsic safety parameters	Ui= 28VDC, Ii=100mA, Pi=0.657W, Ci=0.μF, Li=0mH
Protection level	Ordinary IP65 diving type IP68
Environmental conditions	Temperature -20 ° C ~ 55 ° C, relative humidity 5% ~ 90%, atmospheric pressure 86 ~ 106kPa
Applicable medium	Gas, liquid, steam
Transmission distance	Three-wire pulse output type: ≤300m, two-wire standard current output type (4~20mA) ≤1500m; load resistance ≤500Ω; RS485≤1200m.

Instrument caliber(mm)	Liquids		Gas
	Measuring range(m3/hr)	Output frequency range(Hz)	Measuring range(m3/hr)	Output frequency range (Hz)
15	0.3-5	24-400	4-20	352-1761
20	0.6-10	23-832	6-30	254-1273
25	1.2-16	21-320	8-55	161-1112
32	1.8-20	18-200	10-120	97-1172
40	2-40	10-190	27-205	134-1018
50	3-60	8-150	35-380	87-952
65	4-85	6-120	60-640	71-764
80	6.5-130	4.1-82	86-1100	54-696
100	15-220	4.7-69	133-1700	42-548
150	30-450	2.8-43	347-4000	34-392
200	45-800	2-31	560-8000	23-326
300	95-200	1.2-24	1360-18000	16-216
...	...	...	...	...

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