AK Gas Meter Flow Meter

Illustrate

AK gas mass flow meter are the devices for precision measuring the gas mass.

Introduction

Gas mass flow meters are the devices for precision measuring the gas mass. It transform s the flow rate into the standard gas volume flow rate or gas mass flow rate. 
Gas mass flow meters have high accuracy, long during and stable characters etc.. Using the ways of measuring the gas mass to test gas flow rate is absolutely the leading means. 

Working Principle    
Gas mass flow meter is composed by gas flow sensor and digital display totalizer which brings in the US Micro-Bridge Technology. 
    Gas mass sensor is based on the principle of the direct proportion in heat quantity between gas mass sensor and output voltage, and transform the gas flow rate and pressure into analog signal output.    
The function of Digital totalizer is to transform the analog signal into digital signal through the internal singlechip A/D. Then transform the gas mass into the standard volume flow rate after calculating the data.Last but not the least,caculating the total flowrate and the instantaneous flowrate to 4Nos and 8Nos display. 
Digital totalizer can also transform the analog electric signal of gas pressure into 3Nos display through the digital tube after numbers of caculating and transform. 
Besides, singlechip can calculate all kinds of normal data and the upper&lower limit of flow rate&pressure.These data could be store forever.Singlechip can also store the total flow rate into the EEPROM memory machine.All the above data could be automately store when power cut;get back when the power recover. after the power recover. 
 
Working ambience
Ambient temperature：0~+40C
Relative humidity:≤93%
Pressure：86KPa~106KPa
Meduim temperature range：-25~+125C（≥85C，need special specify）
 
Choosing parameters

Example：XZL-200BW
 
 
Main technical parameters (Table one)       
                                               
Type Flow range Precision Max. 
working 
pressure		 Max. 
pressure
 		 Response
 time		 Indicator function Max.cumulative 
flow (m³)		 Pipe 
size
XZL-200SCCMAM/AW 0-200mL/min 2.0 1.0MPa ≤10Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999(L) φ3
XZL-500SCCMAM/AW 0-500mL/min 2.0 1.0MPa ≤10Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999(L)
XZL-1000SCCMAM/AW 0-1000mL/min 2.0 1.0MPa ≤10Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999(L)
XZL-5AM/AW 0.5-5L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999
XZL-5BM/BW 0.5-5L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous  
flowrate;
pressure; upper
 and lower limit; 
Alarm 		 99999.999
XZL-10AM/AW 0.5-10L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999 φ6
XZL-10BM/BW 0.5-10L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and 
instantaneous  
flowrate;
pressure; upper 
and lower limit; 
Alarm		 99999.999
XZL-20AM/AW 0.5-20L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous
 flowrate		 99999.999
XZL-20BM/BW 0.5-20L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous  
flowrate;
pressure; upper
 and lower limit; 
Alarm		 99999.999
XZL-50AM/AW 0.5-50L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999
XZL-50BM/BW 0.5-50L/min 2.0 1.0MPa ≤50Pa 1ms Cumulative and
 instantaneous  
flowrate;
pressure; upper
 and lower limit; 
Alarm		 99999.999
XZL-100AM/AW 1-100L/min 2.0 1.0MPa ≤500Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999 φ12
XZL-100BM/BW 1-100L/min 2.0 1.0MPa ≤500Pa 1ms Cumulative and
 instantaneous  
flowrate;
pressure; upper
 and lower limit;
 Alarm		 99999.999
XZL-200AM/AW 2-200L/min 2.0 1.0MPa ≤500Pa 1ms Cumulative and
 instantaneous
 flowrate		 99999.999 φ16
       
XZL-200BM/BW 2-200L/min 2.0 1.0MPa ≤500Pa 1ms Cumulative and
 instantaneous 
 flowrate;
pressure; upper
 and lower limit;
 Alarm		 99999.999
XZL250AM/AW 2-250L/min 2.0 1.0MPa ≤500Pa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999
XZL-250BM/BW 2-250L/min 2.0 1.0MPa ≤500Pa 1ms Cumulative and
 instantaneous  
flowrate;
pressure; upper
 and lower limit;
 Alarm		 99999.999
XZL500AM/AW 2-500L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999  
 
φ28
 
XZL500BM/BW 2-500L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instantaneous 
 flowrate;
pressure; upper
 and lower limit;
 Alarm		 99999.999
XZL-850AM/AW 2-850L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instantaneous 
flowrate		 99999.999
XZL-850BM/BW 2-850L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous 
 flowrate;
pressure; upper
 and lower limit;
 Alarm		 99999.999
XZL-1350AM/AW 2-1350L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous 
flowrate		 99999.999  
 
 
φ32
XZL-1350BM/BW 2-1350L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous 
 flowrate;
pressure; upper
 and lower limit; 

Alarm		 99999.999
XZL-1700AM/AW 2-1700L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous
 flowrate		 99999.999
XZL-1700BM/BW 2-1700L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous  
flowrate;
pressure; upper
 and lower limit;
 Alarm		 99999.999
XZL-3500BM/BW 45-3500L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous 
 flowrate;
pressure; upper
 and lower limit; 
Alarm		 9999999.9  
φ56
XZL-5000BM/BW 45-5000L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous 
 flowrate;
pressure; upper
 and lower limit; 
Alarm		 9999999.9  
 
φ75
 
XZL-7000BM/BW 45-7000L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous  
flowrate;
pressure; upper
 and lower limit; 
Alarm		 9999999.9
XZL-7500BM/BW 45-7500L/min 2.0 1.0MPa ≤1KPa 1ms Cumulative and
 instant aneous  
flowrate;
pressure; upper
 and lower limit; 
Alarm		 9999999.9
 
5．1  Standard m³ means 1 M3 gas in standard condition；
Standard condition：P=101.305KPa   T=293.15K（20℃）
5．2  When exceeding the Max. cumulative flow(99999999),it will reset and start again(00000000).
The decimal can remain class ml(Option).
5．3  Instantaneous flow indicates 4Nos;Cumulative flow indicates 8Nos;Pressure indicates 3Nos.
5．4  Type BM/BW can set the upper and lower limit of instantaneous flow and pressure;this type 
can also the function of light/sound alarm when exceeding the limit.
 
5.5 Other special functions                                             table table-2
Nos Special function Remark
1 RS485 Option;Whole remote display/reading 
system can be provided if required
2 DC1-5V output Option
3 DC4-20mA output Option
4 1.0% accuracy Option（when flow range≤250L/min, it’s optional）
5 Relay output when over the limit Option

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