China Made Heat Function GPRS Flow Meter PCB RS485

China Made heat function GPRS flow meter PCB RS485
(1)Basic Functions
A.Sensor suitable:DN3~DN2800
B.Range of rate:0.01m/s~12m/s
C.Accuracy:Level 0.25
D.Low-frequency square wave or High-frequency Excitation
    Excitation frequency:3.125Hz,6.25Hz,12.5Hz,25Hz 
E.Excitation Current:100mA ~500mA,Default 160mA or 250mA
F.Language:Display in Chinese,English and other customized
G.Power:86V~265VAC,18V~36VDC
H.Output Signal:1.4-20mA 2.Pulse 3.Frequency 4.High and Low Alarm or Relay
I.Communication:Modbus(RS485),HART,GPRS
J.Display:Instantaneous flow rate,Velocity,Positive accumulation,Negative accumulation,Net accumulation,Signal voltage value

(2)Working Condition
Temperature:-10~60ºC
Humidity:5%~95%

Power:86V~265VAC,18V~36VDC Power Consumption<15W(With the sensor)

(3)Basic Format

A.Circular shell

B.Square shell

(4)Sensor Matching Requirements

The signal sensitivity will be 150 microV to 200 microV for 1 m/s

The excitation current can be customized from 100mA to 500mA.

The resistance for each excitation current:

    125mA is 100-120 Ohms

    160 mA is 60-100 Ohms

    250 mA is 40-60 Ohms.

(5)The Machine Accuracy

0.25%,0.5%

(6)Analog Current Output

Load resistance:0-500Ω

The basic error:0.1%±10μA

(7)Digital Frequency Output

Range:1~5000Hz

Output electrical isolation:Optoelectronic isolation.Isolation voltage:More than 1000 VDC.

Frequency output driver:Field effect tube output,Max 36 VDC power supply,Max 250 mA load current.

(8)Digital Pulse Output

The output pulse equivalent is set by client.

The output pulse width:50ms

Output electrical isolation:Optoelectronic isolation.Isolation voltage:More than 1000 VDC.

Pulse output driver:Field effect tube output,Max 36 VDC power supply,Max 250 mA load current.

(9)High and Low Alarm Output

Alarm output:H -High alarm, L -Low alarm

Output electrical isolation:Optoelectronic isolation.Isolation voltage:More than 1000 VDC.

Alarm output driver: Darlington pipe output,Max 36 VDC power supply,Max 250 mA load current.

(10)Electrical Isolation

Insulation voltage between Analog input and Analog output:not less than 500V;

Insulation voltage between Analog input and Alarm power:not less than 500V;

Insulation voltage between Analog input and AC power:not less than 500V;

Insulation voltage between Analog output and AC power:not less than 500V;

Insulation voltage between Analog output and Ground:not less than 500V;

Insulation voltage between Pulse output and AC power:not less than 500V;

Insulation voltage between Pulse output and Ground:not less than 500V;

Insulation voltage between Alarm output and AC power:not less than 500V;

Insulation voltage between Alarm output and Ground:not less than 500V.
 
Product Parameters