-GMFM-XZL Gas Mass Flow Meter
 

 
  1.General Description
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.
 
2.  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.
 
3.Working ambience:
Ambient temperature:0~+40C
Relative humidity:≤93%
Pressure:86KPa~106KPa
Meduim temperature range:-25~+125C(≥85C,need special specify)
 
4.Choosing parameters

Example:XZL-200BW

 
 
 
 
 
 
 
 
 

5. 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(20ºC)
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

                                              
 
 Payment Terms  of  electromagnetic flow meter
1.Loading Port: Shanghai China
2. Samples Leading Time: 3-7 working days
3. Delivery Time: Within 7-15 days after payment
4.Payment:  T/T, Western Union, Paypal 
 
 After-sales service of  electromagnetic flow meter
We promise to deliver the following after-sales service:
1. Warranty: The warranty period is 12 months starting from the shipping date;
2. Customers will enjoy free repair services for failures found within the warranty due to manufacturing quality;
3. For on-site services not arising from manufacturing quality, we shall charge a certain service fee at our discretion based on actual charges incurred such as travel expense;
 4. We provide paid repair services for meter damages not arising from manufacturing quality issues or meter damages not within the scope of warranty.