Circuit Description - Vortex MTGB Series User Manual

Flow meter

Table of Contents

Note: For model with temperature and pressure compensation, the flowmeter

length should Ье increased50mm compared to the value (А) in table above.

4.4.2 Wafer Connection

5. Circuit instructions

Warning: Electrical Hazard Disconnect power before beginning wiring.

5.1 Flowmeter circuit parameters

Power supply: 12~24VDC/30mA (-20%~+15%); internal power ЗV6 Jithium

battery two automatic switch.

(1) three line 4~20mA linear correction current output (Iout and GND @24V when

the circuit load is less than or equal to 600 Ohm).

(2) programmable pulse output: high level more than 5V (voltage -lV); \ow level

<0.5V; with ЗК pull-up resistance in output.

(З) temperature measurement supports Ptl00 and Ptl000 software se\ection.

( 4) pressure supports the fol\owing З К selection of silicon piezoresistive pressure

sensor and 4-20mA pressure transmitter jumper.

(5) communication support MODBUS-RTU 485 communication protoco\.

5.2 Circuit description

1 Current output:

(1) When the output current is linear 4-20mA, output range [4-22.4]mA. when the

instantaneous flow rate is less than or equal to the lower removal of the flow, or the

signal frequency О. Output 4mA current. The current according to the flow output 4mA

resection and full scale flow output 20mA linear calculation output current value, such

as fruit to calculate the current valнe exceeds 22.4mA, is the highest output 22.4mA.

(2) Modbus communication function:

Transmitter support to MODBUS 4800 and 9600 baud communication Ьу Modbнs

RTU protocol No. З Command (read holding registers) and dynamic reading instrument

for real-time operation of the various parameters, response time is less than 50ms;

Table of Contents