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measured value. Sampling period is set as an increamtal of 200ms. 

For example, if the sampling period is set 5, the actual instrument 

sampling time is 5*200ms = 1s. 

 

Select output pulse or frequency 

 

Output pulse width 

50-1000ms

 

Pulse equivalent: Defines how many volum per pulse. 

There  4  pulse  equivalents:  1.0

10.0

100.0  and  1000.0.  Setting 

pulse  equivalent  to  10.0  means:  for  every  10  units  cummulative 

flow, the instrument outputs a pulse. 

 

MaxFrequency:Maximum    output    frequency 

Flow rate corresponding to maximum frequency 

If 1000Nm3/H    output frequency    5000Hz 

That 500 Nm3/H    output frequency    2500Hz 

 

 

Output pulse width 

50-1000ms

 

Pulse equivalent: Defines how many volum per pulse. 

There  4  pulse  equivalents:  1.0

10.0

100.0  and  1000.0.  Setting 

pulse  equivalent  to  10.0  means:  for  every  10  units  cummulative 

flow, the instrument outputs a pulse. 

 

Instrument  factor:  The  instrument  factor  is  used  to    compensate 

the  interference  of    cross  section    velocity  distribution  and  the 

influence of the specific application environment

 

The    instrument factor is a    coefficient of linear flow and results in: 

Display flow rate =    instrument factor * actual measured flow rate. 

Pipe inner diameter: Enter the real pipe inner diameter here in unit 

of mm. 

 

Noise threshold: Ranged between 0 and 10 and used to suppress 

the  noise  signal.  The  higher  the  value  is,  the  higher  the  singal 

strength wiuld be considered as noise. 

Sampling peroid: The instrument averages all the smapled flow rate 

values  within  the  given  period  and  takes  the  verage  value  as  the 

Содержание TMS

Страница 1: ...Thermal Gas Mass Flowmeter Installation and Operation Guide...

Страница 2: ...ations 6 3 3 Mechanical Construction 7 4 Wiring 9 4 1 Preparation of wiring 9 4 2 Terminal description 10 4 3 Terminal connection 11 5 technical parameters 12 6 Install 13 6 1 Installation direction 1...

Страница 3: ...s and conditions Symbols and meanings used in this manual Graphic symbol meanings in this manual Incorrect operation or infringement with the relevant regulations and the instructions of this manual m...

Страница 4: ...asured gas is pure the gas does not contain particulate matter so as to avoid the damage of granular materials on the sensor 2 4 Safety standards and specifications Installation wiring and use of this...

Страница 5: ...tial temperature above this by varying the power consumed by the sensor The greater the gas velocity the greater the cooling effect and power required to maintain the differential temperature The meas...

Страница 6: ...e Special order of custom made Digital design high accuracy and stability Configuring with RS485 or HART interface to realize factory automation and integration Description Specifications Measuring Me...

Страница 7: ...tapped Insertion Flow Meter Pipe size DN100 DN4000 Special requirements please contact us The insertion sensor of compact insertion flow meter should be inserted to axis of pipe and the length of the...

Страница 8: ...ameter Flange Outer diameter Center Hole Screw Hole Screw Thread Sealing Face Flange Thickness Pipeline Length DN D k n L d f C L 15 95 65 4 14 M12 46 2 14 280 20 105 75 4 14 M12 56 2 16 280 25 115 85...

Страница 9: ...nection and good sealing The explosion proof products should be selected in accordance with the relevant standard of BenAn instrument cable and make sure that the cable parameters meet the explosion p...

Страница 10: ...terface A 485 B RS485 communication interface B ALARM1 Alarm output 1 ALARM2 Alarm output 2 Sensor terminal PT20 PT300 is Default combination Other optional sensors PT20 PT200 PT20 PT1000 RS232 interf...

Страница 11: ...11 4 3 Terminal connection Pulse output wiring Analog output wiring...

Страница 12: ...0mV Maximum noise 500Hz 10KHz Ueff 2 0Mv or 85 265V AC Operating current 650mA Output Output current mode 4 20mA Fixed current output RS485 interface Baud rate 1200 2400 4800 9600 19200 Data 8 Check N...

Страница 13: ...he instrument intake pipe measures must be taken to minimize their impacts on measurement performance The following diagrams describe the recommended minimum straightway lengths of some types of pipe...

Страница 14: ...lace at rare of instrument For the light gases such as helium and hydrogen front straightway lengths should be doubled a front straightway length b rare straightway lengths Control valves and shut off...

Страница 15: ...ropriate location for the flow meter Confirm the inner diameter and wall thickness of pipe Place the other part of meter into ball valve and calculate the insertion depth according to the inner diamet...

Страница 16: ...ictly follow the rules of factory Identify an appropriate location for the flow meter According to length requirement of meter cut the pipe and install the flanges and bolts on the pipe Ensure the mar...

Страница 17: ...17 7 Operating the instrument 7 1 Keyboard and display Display Keyboard Cancel Exit Key Shift Key Modify Page Key Confirm Enter Key...

Страница 18: ...lative flow is greater than 9999999 a carry is generated and indicated by Display the instant flow velocity the unit is fixed as m s 0 and 3 1 indicate the range of velocity while this range is varied...

Страница 19: ...ery history data CHK Instrument self test SAV Save and restore paramters SET Setting of basic parameters enter 1000 CLR Setting the integer and decimal of cumulative flow enter 1000 ImA Setting the cu...

Страница 20: ...press Enter key and the password entering screen appears Press Enter Key once more to switch to password entering model prompted by blinkong cursor Enter the password and press Enter key again Once th...

Страница 21: ...er zero point to make set the display to zero signal indicates that this field is adjustable Flow rate unit is selectable from g min g s Kg min Kg h Nm3 h Nm3 min NL h NL min SCFM Cummulative flow uni...

Страница 22: ...on velocity distribution and the influence of the specific application environment The instrument factor is a coefficient of linear flow and results in Display flow rate instrument factor actual measu...

Страница 23: ...ny volum per pulse There 4 pulse equivalents 1 0 10 0 100 0 and 1000 0 Setting pulse equivalent to 10 0 means for every 10 units cummulative flow the instrument outputs a pulse Instrument factor The i...

Страница 24: ...item in the menu selection screen then enter the password measured value Sampling period is set as an increamtal of 200ms For example if the sampling period is set 5 the actual instrument sampling tim...

Страница 25: ...25 After entered the menu item press the ESC Key to return to the menu selection creen press the...

Страница 26: ...26 ENT key to enter the value set 7 2 4 Totalizer Settings Clear or set the cumulative flow decimal and integer...

Страница 27: ...ey to enter the calibration menu Move the cursor to Adjust Iout Zero and then press Ent Key to edit the value Enter 3 90mA in this example and then press Ent Key angain to save Step 5 Hold down the Sh...

Страница 28: ...alue Analog output fixed to 4mA PV Flow SV Velocity TV Temperature QV Totalizer Set the RS485 port baud rate and parity bit The stop bit is fixed as i bit The default parameters of RS485 are Baud Rate...

Страница 29: ...ascending The total number of segments could be less than 5 but the correction takes from the firt segment and in a row correction factor 1 143 10 00 8 75 correction factor 0 899 30 00 10 00 31 00 8...

Страница 30: ...historical data temperature if set the display to loop display Backlight settings always and moment moment for the back of the display backlight 30S The display content is set for setting the content...

Страница 31: ...tory data Enter the value of the date you want to query the following two lines of traffic value and cumulative value Daily at 8 am the meter automatically saves the current flow and the fatigue measu...

Страница 32: ...of the manual requirements and installation or use conditions Incorrect or violate the local related instrument installation wiring or the use regulations Wroks with the equipmets which are not elect...

Страница 33: ...10 Cumulative decimal 2 float IEEE754 TXD 01 03 00 08 00 02 45 C9 RXD 01 03 04 00 00 00 00 FA 33 4x0011 4x0012 Cumulative float 2 float IEEE754 TXD 01 03 00 0A 00 02 E4 09 RXD 01 03 04 00 00 00 00 FA...

Страница 34: ...B 2 H 6 0 502 1 235 0 4384 7 Carbon Tetrachloride CCl 4 0 1297 6 86 0 3052 8 Carbon Tetrafluoride CF 4 0 1659 3 9636 0 4255 9 Methane CH 4 0 5318 0 715 0 7147 10 Acetylene C 2 H 2 0 4049 1 162 0 5775...

Страница 35: ...Nitrous Oxide N2O 0 2098 1 964 0 7048 45 Oxygen O2 0 2196 1 427 0 9861 46 Phosphorus Trichloride PCI 3 0 1247 6 127 0 3559 47 Phosphorane PH3 0 261 1 517 0 6869 48 Phosphorus Pentafluoride PF5 0 1611...

Страница 36: ...o chapter6 2 The flow regulator is not installed in front of instrument Correct the installation Sensor faulty Send to manufacturer Electronic component anomaly Send to manufacturer Incorrect or unsta...

Страница 37: ...25000 12720 4060 400 45000 45000 22608 7200 500 70000 70000 35325 11280 600 100000 100000 50638 16300 700 135000 135000 69240 22100 800 180000 180000 90432 29000 900 220000 220000 114500 77807 1000 28...

Страница 38: ...38 Qs The flow rate in standard condition Nm3 h Qn The flow rate in working condition m3 h t The medium temperature in working condition p The medium pressure in working condition Gauge pressure kPa...

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