● apply to all of differential pressure flow sensor
● battery powered on-site shows no external
power supply
● the output of super anti-interference design
isolation, shielding all distractions
● the output pulse, current (4-20mA),485(modbu-
rtu) signals need external power supply
● with temperature and pressure sensor
● Gas, steam automatic temperature and
pressure compensation
● range rate is 1:100 (special requirement can be 1:200)
● accuracy of 0.1 level
● gas display the parametric such as temperature, pressure, and working
conditions flow, standard condition flow, etc.
● steam display the parametric such as temperature, pressure, and density,
mass flow, etc.
Function
Flow integrating instrument especially adopts micropower singlechip (power
< = 400uA ), using industry lithium battery DC3.6V supply power, can use
2-3 years.
Flow integrating instrument using large screen liquid crystal display, it can
show 6 transient flow, correct to 2 decimal places (0~9999.99m3/h) or 1
decimal places(0~99999.9m3/h),cumulative flow can show 9 cumulative flow,
correct to 4 decimal places(0~99999.9999m3)or (0~9999.99999m3)
Technical Parameter
Current Output
> Output two-wire 4-20mA
> Load resistance: 0~600Ω
> Response time: <1s
> Intrinsic erroren: ±0.5%(20℃±5℃)
> Environmental conditions: temperature: -40-85℃, humidity: <85%
> Power supply: ±24VDC±15%
> Power supply:<60Ma
Pulse
> working voltage: 12VDC~+24VDC
> working current <50mA
> pulse output amplitude Vh=24V, VL<1V.
> frequetance output: 0~1000Hz.
> pulse equivalent: To build the basic unit of the flow that for output, such
as: accumulate display as 5decimal 0.00000, the pulse equivalent is
0.00001 M3/P, be 0.01L/P; accumulate display as 4decimal 0.0000, the
pulse equivalent is 0.0001M3/P, be 0.1L/P; accumulate display as 3decimal
0.000, the pulse equivalent is 0.001M3/P, be 1L/P.
485 Output
Agreement: modbus rtu
Message format: Instrument use 04 package transmit 3 floating point
variable 12 continuous bytes;
In proper order is transient flow 6(0-999999, 4 bytes),accumulate flow low
6(0-999999, 4bytes),accumulate flow high 6 (0-999999, 4types);
accumulate flow low 6: address 30001, (0-999999);
accumulate flow high 6: address 30003, (0-999999);
transient flow 6: address 30005, (0-999999);
Decimal point refer to the display of flow instrument, the flow instrument will
not transit the decimal point information.
Protection and Hazardous Rating
Protection grade: Ip65
Hazardous rating: ExⅡdCT4(not including acetylene)