LZZ –S DOUBLE ROTOR FLOWMETER
Summary
LZZ –S Double Rotor Flowmeteris high precision measuring instruments used for continuous measurement of liquid flow in pipeline.It has no pulse, low noise, high precision, high reliability, wide range, small pressure loss, strong adaptability of viscosity, and can measure the high temperature, high viscosity liquids, calibration of convenient, easy to install, and many other advantages.
The meter is equipped with the pointer display, word wheel cumulative counting device, and can directly display cumulative flow when liquid flows through the pipe, it can also realize remote display through connection between the transmitter and the electronic instrument or computer. The flowmeter is suitable for petrochemical, chemical, chemical fiber, traffic, commerce, food, medicine,health care and other industrial departmentsof commerce measurement control and engineering management.
Principle of Operating
LZZ -S double rotor flowmeter consists of flow transmitter and counter.The main part of the transmitter is composed of measuring room equipped with a pair of special tooth profile of helical rotor and seal coupling.Counting mechanism contains retarding mechanism, precision adjusting mechanism,counter for print wheel accumulation and electrical transmitter, etc.
Measuring room mainly composed of a pair of special rotor and cover seal cavity as flow measurement units.Rotor powered by the differential pressure ofimport and export of flowmeter so that send the inlet liquid to the exit after passing the sealing cavity measurement. The amount of liquid through seal chamber every turn is eight times of the picture, sealing coupling transfers the total rotation of the rotor and rotating speed to the counting mechanism, and a pointer to display and print wheel accumulation, then you can know the total amount of liquid passing by the pipe.You can also install transmitter in counting mechanism,namely becomethe flowmeter which can output signal, the transmitter matches with our company’s electric display instrument, can also realize remote transmission (quantitative, accumulated, moments, etc) automatic measurement and control. You can see the instruction in the display instrument classification.
1. counter 2. transmitter 3. precision adjusting mechanism
4. flow transmitter 5.external precision adjustment device
LZZ –S DOUBLE ROTOR FLOWMETER
Main Technical Parameters
1main parameters
1.1 Accuracy class:0.2%；0.5%（Note：If you have special requirements we can provide the accuracy class of 0.1%）
1.2 Nominal diameter: 25;40;50;80;100;150;200;250;300mm;
1.3 Pressure class: 1.6MPa;2.5MPa;4.0MPa;6.3MPa;
1.4 Flange standard: HG/T20592-2009，HG/T20617-2009 or on request.
1.5 Fluid viscosity: 0.3-3500mPa.s(dynamic viscosity)
1.6 Fluid temperature: common temperature-25℃～+100℃；high tempreature+100℃～+250℃(Please indicate the special temperature)
1.7 Flow range as shown in the table below
(Unit: m³/h; Accuracy class: 0.5)
Model / diameter / viscosity mPa.S0.3～0.8 / 0.8～2 / 2～15 / 15～400 / 400～1000 / 1000～2000 / 2000～3500
gasoline / kerosene / diesel
engine oil / heavy oil / high viscosity liquid
LZZ-S-25B / 25 / 3～9 / 1.5～10 / 1～10 / 1～10 / 1～8 / 1～8 / 1～6
LZZ-S-40A / 40 / 3～9 / 1.5～10 / 1～10 / 1～10 / 1～8 / 1～8 / 1～6
LZZ-S-40B / 7～20 / 3～22 / 2.5～25 / 2.5～22 / 2～18 / 2～18 / 3～12
LZZ-S-50A / 50 / 7～20 / 3～22 / 2.5～25 / 2.5～22 / 2～18 / 2～18 / 3～12
LZZ-S-50B / 9～36 / 4.5～36 / 3.6～36 / 3.6～36 / 2.8～25 / 2.8～25 / 4.5～18
LZZ-S-80A / 80 / 9～36 / 4.5～36 / 3.6～36 / 3.6～36 / 2.8～25 / 2.8～25 / 4.5～18
LZZ-S-80B / 20～80 / 10～80 / 10～100 / 10～100 / 6.5～56 / 6.5～56 / 5～40
LZZ-S-100A / 100 / 20～80 / 10～80 / 10～100 / 10～100 / 6.5～56 / 6.5～56 / 5～40
LZZ-S -100B / 25～100 / 20～100 / 15～150 / 15～150 / 8.5～80 / 8.5～80 / 6.5～55
LZZ-S-150A / 150 / 25～100 / 20～100 / 15～150 / 15～150 / 8.5～80 / 8.5～80 / 6.5～55
LZZ-S-150B / 55～225 / 30～250 / 25～250 / 25～250 / 18～150 / 18～150 / 10～100
LZZ-S-200A / 200 / 55～225 / 30～250 / 25～250 / 25～250 / 18～150 / 18～150 / 10～100
LZZ-S-200B / 90～360 / 50～400 / 40～400 / 40～400 / 28～240 / 28～240 / 20～160
LZZ-S-250A / 250 / 90～360 / 50～400 / 40～400 / 40～400 / 28～240 / 28～240 / 20～160
LZZ-S-250B / 130～540 / 65～540 / 60～600 / 60～600 / 42～360 / 42～360 / 30～240
LZZ-S-300A / 300 / 130～540 / 65～540 / 60～600 / 60～600 / 42～360 / 42～360 / 30～240
LZZ-S-300B / 220～800 / 110～900 / 95～950 / 95～950 / 70～600 / 70～600 / 54～450
LZZ –S DOUBLE ROTOR FLOWMETER
(Unit: m³/h; Accuracy class:0.2)
Model / diameter / viscosity mPa.S0.3～0.8 / 0.8～2 / 2～15 / 15～400 / 400～1000 / 1000～2000 / 2000～3500
gasoline / kerosene / diesel engine oil / heavy oil / high viscosity liquid
LZZ-S-25B / 25 / 3.5～8 / 3～10 / 2～10 / 2～10 / 2～8 / 2～8 / 2～6
LZZ-S-40A / 40 / 3.5～8 / 3～10 / 2～10 / 2～10 / 2～8 / 2～8 / 2～6
LZZ-S-40B / 8～20 / 5.5～22 / 4.5～22 / 4.5～22 / 4～18 / 4～18 / 3～12
LZZ-S-50A / 50 / 8～20 / 5.5～22 / 4.5～22 / 4.5～22 / 4～18 / 4～18 / 3～12
LZZ-S-50B / 15～36 / 9～36 / 7～36 / 7～36 / 6～25 / 6～25 / 4.5～18
LZZ-S-80A / 80 / 15～36 / 9～36 / 7～36 / 7～36 / 6～25 / 6～25 / 4.5～18
LZZ-S-80B / 30～80 / 20～80 / 15～80 / 15～80 / 14～56 / 14～56 / 10～40
LZZ-S-100A / 100 / 30～80 / 20～80 / 15～80 / 15～80 / 14～56 / 14～56 / 10～40
LZZ-S-100B / 40～100 / 25～100 / 20～120 / 20～120 / 18～72 / 18～70 / 14～55
LZZ-S-150A / 150 / 40～100 / 25～100 / 20～120 / 20～120 / 18～72 / 18～70 / 14～55
LZZ-S-150B / 88～220 / 58～225 / 44～220 / 44～220 / 38～150 / 38～150 / 25～100
LZZ-S-200A / 200 / 88～220 / 58～225 / 44～220 / 44～220 / 38～150 / 38～150 / 25～100
LZZ-S-200B / 150～360 / 90～360 / 72～360 / 72～360 / 50～210 / 50～210 / 40～160
LZZ-S-250A / 250 / 150～360 / 90～360 / 72～360 / 72～360 / 50～210 / 50～210 / 40～160
LZZ-S-250B / 180～540 / 135～540 / 100～540 / 100～540 / 90～360 / 90～360 / 60～240
LZZ-S-300A / 300 / 180～540 / 135～540 / 100～540 / 100～540 / 90～360 / 90～360 / 60～240
LZZ-S-300B / 250～800 / 220～900 / 180～900 / 180～900 / 150～600 / 150～600 / 110～450
2The major component material and the nominal pressure
Model / Housing , front and back cover / covering plate / Rotor / Axis / Axle sleeve / Nominal pressure（MPa）LZZ-S-C / Carbon steel / Carbon steel / cast iron、aluminiumalloy,Stainless Steel / Stainless Steel / Graphite / Below DN100is 4.0；Beyond DN150 is2.5
LZZ-S-P / Stainless Steel / Stainless Steel / Stainless Steel / Graphite/ball bearing / 1.6、2.0、2.5、
LZZ-S-S / doublehousing / Specification:DN80、DN100、DN150 Nominal pressure 6.3NPa；DN200 Nominal pressure 4.0MPa；
3Double rotor flowmeter with warm jacket
In order to facilitate transporting and measuring flow for the medium that is easy to freeze under normal temperature or condense,crystallize,usually need to heat medium in the system pipe, and melt the medium and hold its temperature. But due to the double rotor flowmeter installation does not allow directly access to the steam (purpose is to prevent damage meter),therefore we design the flowmeter with warm jacket.The flowmeter housingadd warm jacket outside, to melt solidified medium in the flowmeter, you can use hot water, hot oil or below 200 ℃ steam flux into the warm jacket and keep certain temperature so that make sure the flowmeter keep moving.
The filter installed on double rotor flowmeter can also be adopted with the structure of warm jacket.
The inlet and outlet of warm jacket usually is designed by DN15 diameter flange, or on special request.
The warm jacket nominal pressure is 0.5Mpa, or on special request.
LZZ –S DOUBLE ROTOR FLOWMETER
Model Selection Table
Model / Code / ContentLZZ-S / Double rotor flowmeter
25 / Nominal Diameter：DN25mm
40 / Nominal Diameter：DN40mm
50 / Nominal Diameter：DN50mm
80 / Nominal Diameter：DN80mm
100 / Nominal Diameter：DN100mm
150 / Nominal Diameter：DN150mm
200 / Nominal Diameter：DN200mm
250 / Nominal Diameter：DN250mm
300 / Nominal Diameter：DN300mm
C / The structure of material：Carbon Steel
P / The structure of material：Stainless Steel
1.6 / Nominal Pressure PN1.6MPa
2.5 / Nominal Pressure PN2.5MPa
4.0 / Nominal Pressure PN4.0MPa
6.3 / Nominal Pressure PN6.3MPa
JS / Counter：localindication；
GF / With transmitter，output signal：pulse；
MF / With transmitter，output signal：4～20mA；
i / Explosion protectiontype：Intrinsically safeExiaIICT5
d / Explosion protectiontype：Explosion isolation ExdIICT6
C / Normal temperature
G / High temperature
D / Single housing
S / Double housing
B / Warm jacket
Outline and installation dimension
1 The structure and dimension
1.1 The structure and dimension of the flowmeter
Model / diameter / L / H / B / C / I / D / D1 / N / d0 / Pressure MPa / Reference weightstandard / Double housing
LZZ-S-25B / 25 / 300 / 420 / 175 / 228 / 90 / 115 / 85 / 4 / 4 / The flange example:4.0MPa / 29
LZZ-S-40A / 40 / 300 / 420 / 175 / 228 / 90 / 150 / 110 / 4 / 4 / 33
LZZ-S-40B / 300 / 450 / 200 / 258 / 112 / 150 / 110 / 4 / 4 / 40
LZZ-S-50A / 50 / 300 / 450 / 200 / 258 / 112 / 165 / 125 / 4 / 4 / 42
LZZ-S-50B / 340 / 525 / 240 / 333 / 150 / 165 / 125 / 4 / 4 / 62
LZZ-S-80A / 80 / 340 / 525 / 240 / 333 / 150 / 200 / 160 / 8 / 8 / 64
LZZ-S-80B / 380 / 400 / 580 / 285 / 388 / 175 / 200 / 160 / 8 / 8 / 94
LZZ-S-100A / 100 / 380 / 400 / 580 / 285 / 388 / 175 / 235 / 190 / 8 / 8 / 98
LZZ-S-100B / 440 / 450 / 660 / 339 / 468 / 250 / 235 / 190 / 8 / 8 / 146
LZZ-S-150A / 150 / 440 / 450 / 660 / 339 / 468 / 250 / 300 / 250 / 8 / 8 / 152
LZZ-S-150B / 500 / 560 / 740 / 410 / 548 / 270 / 300 / 250 / 8 / 8 / 238
LZZ-S-200A / 200 / 500 / 560 / 740 / 410 / 548 / 270 / 360 / 310 / 12 / 12 / 245
LZZ-S-200B / 550 / 700 / 820 / 455 / 628 / 285 / 360 / 310 / 12 / 12 / The flange example :2.5MPa / 337
LZZ-S-250A / 250 / 550 / 700 / 820 / 455 / 628 / 285 / 425 / 370 / 12 / 12 / 350
LZZ-S-250B / 700 / 910 / 550 / 718 / 350 / 425 / 370 / 12 / 12 / 570
LZZ-S-300A / 300 / 700 / 910 / 550 / 718 / 350 / 485 / 430 / 16 / 16 / 600
LZZ-S-300B / 800 / 1010 / 645 / 818 / 415 / 485 / 430 / 16 / 16 / 855
Note: (1)"H"dimensionpreparefor G the dimension of the governor;
(2)The flowmeter with warm jacket, the inlet and outlet of heat source is DN15 flange connection;
(3)If flowmeter configures heat radiator, please add the heat radiator size to H size in the table, it is total height of high temperature flowmeter;
（4）Double housing flowmeter pressure can be up to 6.3 MPa; DN200 pressure is 4.0 MPa. Special designment can be up to 10 MPa;
1.2The radiator structure anddimension
Note:
If the model of the flowmeter is G, the flowmeter is high temperature, it is used for 60-120℃, without transmitter and may not configure heat radiator.
If the model of the flowmeter is G2, the flowmeter is high temperature, it is used for 120-250℃, and configure long heat radiator.
If the model of the flowmeter is G1, the flowmeter is high temperature, it is used for 60-120℃, and with transmitter, configuring short heat radiator.
2 Installation and application
2.1The filter should be installed infront of the flowmeter,their housing’s arrow directions are the same.
2.2 When the measured liquid containing gas, the gas separator should be installed in front of flowmeter.
2.3Under the condition of correct installation of the flow meter, if it is not easy to see reading,counter can be turned to 180 ° or 90 °.
2.4 Push the rotor a few times with a wooden stick from the exitbefore installing a new flowmeter,if the rotor does not move,you can soak withgasoline (to avoid deposits after factory check).
2.5 Throttle valve should be installed in the inlet of the flow meter,on-off valve installed in the exit,When using on-off valve needs a slow start, don't suddenly open valve.
2.6 It is forbidden to use steam sweep line through the flowmeter.
2.7 In continuous occasion, flowmeter must add by-pass pipe.
2.8The pipe shall be flush before flowmeter installation, when flushing straight pipe (replace flow meter location)to prevent welding slag, debris into the meter.
2.9 It is forbidden to check meter composed of carbon steel material by water.
2.10When flow meter measuring flow, the value of flow shall not exceed the range of flow range.Flowmeter working in 40-80% ofmaximum flow is suitable.
3Error calculation and adjustment
3.1The basic error of flowmeter is calculated by the verification flow point of all measured values according to the following formula: (volume)
E=(Vm－V)/V×100%
E－－The error of flowmeter(generally refers to accumulative error) take two significant figures.
Vm－－Flowmeter measuring values(indicating value)
V－－After meter is corrected, flow standard device measuring value ( the actual value)
From the basic formula of error, when Vm is greater than V, The basic error of flowmeter is“+”, it indicates flowmeter going fast.
From the basic formula of error,when Vm is less than V, The basic error of flowmeter is“-”, it indicates flowmeter going slow.
In order to make the flowmeter errors within a basic error limits, often need to adjust the error.By replacing a pair of adjusting gear (tooth) in counter changes the mechanical transmission speed ratio, so that the flow meter’s indicating value getsadjusted.
Error adjustment can't change features of the flowmeter, only make its features curve artificially in a new coordinate.In general, in the prescribed (or actual use) flow range,the basic error range of the maximum and minimum flow check point is not more than the precision of the basic error limits,all can realize flowmeter basic error qualified by adjusting error.
For flow meter has been used, usually use the original adjusting gear checking error, and then adjusting error according to the error of the specific situation.
3.2Double rotor flowmeter error adjusting method (error adjustment instructions)
3.2.1Common error adjusting method:
3.2.1.1 In designing the standard of the double gear is 38/35, During inspection, if you find the meter is going faster, namely appearerror (+),such as +1.02-+0.3,the gear should be changed 38/35 into 41/38, at this time originalpoint of the error curve moves up from 38/35 gear corresponding to zero to 41/38 gear to the location of + 0.63 (see table), so error curve in a new coordinate, and the error of flowmeter has been adjusted in the range of + 0.39 ~ ﹣0.33,and satisfy the qualified requirements(see figure 1).
3.2.1.2When the flowmeter is working, due to the different working conditions and changes, the error usually changes and it may exceed the maximium error,if only the error range is less than 1%,generally can be transferred to qualified, for example, instrument error drops to 0.7 ~ + 0.2, and need to change the double gear, at first you should know that how many gear teeth the double gear has. If the double gear is38/35, adjust according to the above of the first method. If the double gear is38/35,then take the error+ 0.63 corresponding to gear as zero(the origin of coordinates).Nowthe 41/38 gear should be changed into the double gear of 41/37, error can be adjusted to the range of﹣0.5-﹢0.4 that make sure qualified (see figure 2).
3.2.1.3The specific method of calibrating and adjusting double rotor flowmeter of class 0.2 should be according to the national metrological verification procedures JJG667-1997 "liquid volumetric flowmeter verification regulation".
3.2.2The error adjustment method of GF3 external precision regulator
GF3 is a kind of external precisionregulator, when error adjusting, do not need to remove the governor andcan be directly adjusted in the external, the operation is convenient, easy and accurate.
Example for adjustment method:
When there is + 0.63 ~ 0.67% error in calibration flowmeter,after unscrewing the lid of the external regulator, you can see the left and right knobs, adjust error according to the surface of the scale of the external precisionregulator. Coarse adjustment specification is 0.45% per cell,adjusting the coarse gear one cell in the direction of negative,that is﹣0.45%,it can make the original error theory adjusted + 0.63 ~ + 0.67% to + 0.18 ~ + 0.22%,then you can adjustfinetuninggear two cell in the direction of negative.The value of adjustment is 0.05×2=0.10%, then the adjustment is from + 0.18 ~ + 0.22% to + 0.08 ~ + 0.12, achieved the best error value.
Suggest high accuracy (class 0.2) flowmeter configuring GF3 is preferred.
3.3 Error adjustment table
Error adjustment quantity﹪ / The set of adjustingthe gear / Error adjustment quantity﹪ / The set of adjusting
the gear
Above Z / BelowZ / Above Z / Below Z
4.21 / 33 / 30 / 0.28 / 40 / 38
3.90 / 34 / 31 / 0.40 / 41 / 39
3.62 / 35 / 32 / 0.53 / 42 / 40
3.35 / 36 / 33 / 0.64 / 43 / 41
3.10 / 37 / 34 / 0.75 / 44 / 42
2.86 / 38 / 35 / 0.86 / 45 / 43
2.63 / 39 / 36 / 0.96 / 46 / 44
2.42 / 40 / 37 / 1.14 / 24 / 23
2.22 / 41 / 38 / 1.32 / 25 / 24
2.02 / 42 / 39 / 1.47 / 26 / 25
1.84 / 43 / 40 / 1.62 / 27 / 26
1.75 / 29 / 27 / 1.75 / 28 / 27
1.67 / 44 / 41 / 1.88 / 29 / 28
1.50 / 30 / 28 / 2.00 / 30 / 29
1.35 / 46 / 43 / 2.11 / 31 / 30
1.27 / 31 / 29 / 2.21 / 32 / 31
1.05 / 32 / 30 / 2.30 / 33 / 32
0.85 / 33 / 31 / 2.39 / 34 / 33
0.66 / 34 / 32 / 2.48 / 35 / 34
0.48 / 35 / 33 / 2.63 / 37 / 38
0.31 / 36 / 34 / 2.77 / 39 / 38
0.15 / 37 / 35 / 2.89 / 41 / 40
0.00 / 38 / 36 / 3.01 / 43 / 42
0.14 / 39 / 37 / 3.16 / 46 / 45
When instrument value is less than the actual value，choosing above Z, below Zfrom down to up / When instrument value is greater than the actual value, choosingabove Z, below Z from down to up
4Match with transmitter and accessories
Installing a transmitter on the double rotor flowmeter (or transducer)of our company,so it can be remote transmitting, it is transferredthe flow of measured medium into pulse signal, Thus realize the automatic control system.
4.1GF transmitter
GF transmitter is pulse transmitter devicematching with double rotor flowmeter used in ExiaIICT5 and ExdIICT6 level places. Explosion-proof form is intrinsically safe and explosion isolation respectively, on the housing and nameplate have obvious explosion-proof symbol,after GF transmitter andsafety barrier is connected, and they should match with display instrument.
GF－ⅠTransmitter technology characteristic1、operating voltage DC12V±10%
2、output signal：Voltage pulse high level greater than 9 v;Voltage pulse low level less than 0.5 v
3、Match with safety barrier：KN9714C
4、three-wire system（VDD signal GND）
5、The intrinsically safe connection diagram
6、Common and explosion isolation interface circuit diagram / GF－ⅡTransmitter technology characteristic
1、operating voltage： DC24V±10%
2、output signal：Voltage pulse high level greater than 20 v;Voltage pulse low level less than 1V
3、Match with safety barrier：KN9714
4、three-wire system（VDD signal GND）
5、The intrinsically safe connection diagram
6、Common and explosion isolation interface circuit diagram
4.2 MF series 4 ~ 20mA analog output transmitter
4.2.1Summary
MF series transmitter can match with double-rotor flowmeter of our company,instantaneous flow is transferred into 4 ~ 20 mA analog output on scene, and remote to control room, for the instantaneous flow display, adjust and control. At the same time the output flow pulse signals used for calculating flow value.
4.2.2 Feature
4.2.2.1Four-wire system(VDD line、4-20mAelectricstreamline、Pulse signal lines、GND line)
Note: Only to 4 ~ 20 mA output for three-wire system, pulse signal lines do not supply
4.2.2.2Flowmeter directlyoutputs 4 ~ 20 mA, long transmission distance, safe and reliable.
4.2.2.3Explanation of Part Numbers
4.2.3 Technology parameters
4.2.3.1Output signal: a、4 ~ 20 mA analog
b、Voltage pulse：VL<0.5V VH>9V 12V; VL<1V VH>20V 24V
4.2.3.2Allow error analog：±0.5%FS
pulse：±1pulse
4.2.3.3Ambient temperature ﹣41~﹢60℃(Explosion-proof requirements﹣10~+60℃)
4.2.3.4The analog load resistance (client) ＜400Ω power supply12 V；＜800Ω power supply24 V
4.2.3.5Power supply：DC12V±10%60mA; DC24V±10%60mA
4.2.3.6Explosion-proof sign: ExiaIICT6、ExdIICT6
4.2.4The user instructions
Whenordering, please indicate the power supply is 24 V DCor 12V DC. And wiring referring to the following figure
4.3 Safety barrier outline and installation dimensions (JF)
Note:the companycan matchingJF type safety barrier, user must indicate when ordering
4.4Pulse transmitter and double rotor flowmeter match with transmitting parameter table
DN / L/P / P/S / DN / L/P / P/SModel / A5+A25T+GF / Model / A5+G+GF
25B / 0.01 / 250 / 150A / 0.1/1 / 417/41.7
40A / 0.01 / 250 / 150B / 1 / 69.4
Diameter / A5+G+GF / 200A / 1 / 69.4
40B / 0.1 / 200B / 1 / 94.4
50A / 0.1 / 69.4 / 250A / 1 / 94.4
50B / 0.1 / 111.11 / 250B / 1 / 138.9
80A / 0.1 / 111.11 / 300A / 1 / 138.9
80B / 0.1 / 277.8 / 300B / 1 / 222.2
100A / 0.1 / 277.8
100B / 0.1/1 / 417/41.7
5Fault analysis and elimination
fault phenomenon / reasonanalysis / eliminationmethodsThe rotor do not run / 1、There are sundries inpipe
2、Measured liquid contains many sundries .The filter is damaged.Sundries go into meter，the gear get stuck. / Unpick and flushinstrument and pipeline, repair the filter
Axial seal coupling leakage / Seal packing wear or lack of seal oil / Tighten gland or replace filler, filling sealing oil.
The point rotates unsteadily or go intermittently / Pointer, washer, etc loose or rotor rotating inflexible. / Retighten, eliminate the inflexible phenomenon.
Small flow negative
error is too large / Rotor collide with metering box wall, the reason is bearing wear, or metering box wall deformation / Replace bearings, repair metering box walls and gear of variable tooth, make rotation of the gear flexible, make sure the required clearance
Error change too much / Fluid has big pulsating or containing gases. / Reduce pulse or add gas separator
Error is too big, but the difference between the maximum and minimum error less than 1% / Beyond usage period or after repairing the clearance change over / Check and adjust again
Transmitter has no signal / Inappropriate position of
transmitting piece / To adjust the position, the left and right sides, back and forth motion
polarity reversed / Back to connect the "+" red lines "-" the black line
Order notice
◇Model and specification: ◇Accuracyclass: ◇Maximum and minimum flow value:
◇Measured medium: ◇Operating temperature: ◇Medium viscosity:
◇Remote transmission distance is greater than 100m need to indicate
◇Special wetted material mark
◇Perform other flange standard number
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