Metal rotameter flowmeter
Overview
Standard LZ series metal rotameter flowmeters are composed of one measuring pipe and on side indicator.The site indicator can be installed also with additional electric devices, suitable for liquid and gas measurement.
The flowmeter adopts variable area measuring principle. The measuring device is composed of one taper measuring pipe and floater. The floater can move freely up and down in the taper measuring pipe to change the flow area in the pipe.When the flow changes, the vertical position of the floater inside the measuring pipe changes correspondingly.Through magnetic transmitting system, the position of the floater is transmitted to the dial scale of the indicator to indicate the flow.
In M6 M8 M9 indicator, the follow-up magnet movement is transmitted directly to the dial scale.In M7 indicator, when the follow-up magnet rotates, the needle driven by the cam plate indicates linearly the flow.
Product characteristics
1).All metal construction, strong and stable.
2).Short stroke compact structure.
3).Low pressure loss design.
4).New style magnetic coupling structure ensures that the signal transmission is more stable.
5).Magnetic filter can be added as customer re-quirements.
6).Thermal insulation or tracing heat jacket.
7).Used in the gas and liquid measurement in all industries. The measurment parts can adopt dif-ferent materials to be suitable for different me-dias.
8).Suitable for harsh environment and seriously corrosion media. Having good heat resistance and pressure resistance.
9).Intelligent dual-line LCD display,on site in-stant/cumulative flow display and back light as options.
10).Two-wire system battery alternating cur-rent can be choosed to supply the power.
11).With data recovery data backup and power-fail protection functions.
Technical parameter
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Measurement range |
Water：(20℃):1-200000l/h air：(20℃,0.1013Mpa):0.03～4000m³/h |
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Ratio of range |
10:1 for standard type，20:1 for special type |
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Precision degree |
standard type 1.5 grade, special type 1.0 grade |
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Special standard |
standard type:DN15-DN50 4.0MPa special grade:DN15-DN50 25MPa The pressure grade of the flowmeter with the jacket is 1.6MPa and it should be agreed with the plant for special type before selection and ordering |
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Pressure loss |
7KPa-70KPa |
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Media temperature |
standard type:-40℃～100℃,PTFE:0℃～120℃ High temperature type:100℃～450℃ |
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Media viscosity |
DN15:η<5mPa.s(F15.1-F15.3) η<30mPa.s(F15.4-F15.8) DN25:η<30mPa.s DN50-DN150:<η<30mPa.s |
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Environment temperature |
long transmission type: 40-℃～185℃(liquiid crystal will not be damaged), normal operation temperature of liquid crystal is 30-℃80～℃ Field pointer type:-40℃～100℃ |
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Connection pattern |
Standard type:DIN2501standard flange |
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Special type |
random standard flanges or screw threads appointed by the customers |
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Cable interface |
1/2NPT internal thread for explosion proof type and M20*1.5 internal thread for other types |
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Power supply |
Standard type: 24VD(two wires system 4-20mA(12VDC-32VDC) Alarm type: 24VDCthree wires system 4-20mA(18VDC-28VDC) Ac type: 85-265VAC 50Hz Battery type:3.6V,7.5AH lithium battery, can be used continuously for three years |
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Load characteristic |
two-wire system:RLmax=50*(-12) =600ΩΩ@24V Alarm type:maximum load resistance is 200Ω AC type:maximum load resistance is 200Ω |
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Alarm output |
Upper limit or lower limit instantaneous flow quantity alarm Switching value alarm Relay output |
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Liquid crystal display |
Range of instantaneous flow quantity display value:0-50000(may include decimal) Range of accumulated flow quantity display value:0-99999999(may include decimal),automatic reset |
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Protection level |
Ip65 |
Model and specification code
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Flowmeter variety |
LZ |
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Diameter code |
-XXX |
Example:100 indicates DN100 |
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Structural patterns |
FA |
Low:in;top:out |
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FB |
Low:in;top:horizontally out |
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FC |
Low:horizontally in;top:horizontally out |
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FDR |
right in Left out |
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FDL |
Left in right out |
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Material of measurement tube |
-R0 |
0Cr18Ni12Mo2Ti |
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R1 |
1Cr18Ni9Ti(321) |
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R2 |
1Cr18Ni9(302) |
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R4 |
0Cr18Ni9(304) |
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RL |
00Cr17Ni14Mo2(316L) |
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RP |
PTFE |
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Ti |
Titanium alloy |
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Accessory mechanism |
O |
None |
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T |
Clamped type |
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G |
High temperature type |
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Y |
High pressure type |
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Z |
Damping type |
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Reted pressure |
-1.6 |
DN80~DN200 1.6MPa |
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4.0 |
DN15~DN50 4.0MPa |
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16 |
DN80~DN200 16MPa |
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25 |
DN15~DN50 25MPa |
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Operation temperature |
E |
-80 ~200℃ |
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H |
80 ~300℃ |
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Theformofindicator |
-M1 |
Field indication |
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M2 |
Intelligent |
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M4 |
Intelligent(Explosion suppression) |
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Output sight and communication |
N |
No output |
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A |
4~20mA |
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P |
Pulse output |
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Power supply |
0A/0B |
220VAC 60Hz without/with back light |
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1A/1B |
24VDC two wire system/three-four wire system |
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2 |
3.6V Li-ion Battery |
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Supporting flange for installation |
-N |
Without flange |
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C |
With carbon steel flange |
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B |
With stainless steel flange |
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flange standard |
0 |
HG20594 |
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1 |
HG20595 |
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2 |
other flongs standard |
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explosion proofing degree |
0 |
non explosion proof |
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1 |
Exd Ⅱ BT6 Explosion suppression |
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3 |
ExiaⅡ CT5 Intrisically safe |
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Accessories |
Straight tube |
0/1/2 |
Without/with/with PTFE |
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magnetic filetr |
0/1/2 |
Without/with/with PTFE |
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