Flow Meter Connection Guide
This guide provides step-by-step instructions for connecting and configuring a flow meter (caudalímetro) with the Syrus 4G IoT Telematics Gateway. The flow meter used in this guide is the PV161 digital flow meter with RS-232 communication interface.
Technical Specifications
Flow Meter (PV161):
- Measurement Technology: Oval gear mechanism
- Display: LCD, 4 digits (25mm height)
- Communication: RS-232 serial interface
- Power Supply: 12-24V DC
- Pressure Rating: 40 BAR
- Accuracy: ± 1%
Installation & Wiring Diagram
Wiring Configuration
| Syrus 4G Pin | Function | Flow Meter Pin |
|---|---|---|
| Red | Power (12-24V DC) | Power (VCC) |
| Black | Ground (GND) | Ground (GND) |
| Orange | RS-232 TX (Transmit) | RS-232 RX (Receive) |
| Blue | RS-232 RX (Receive) | RS-232 TX (Transmit) |
Configuration & Communication Setup
Serial Port Configuration
To configure the Syrus 4G to interface with the flow meter, run the following command:
sudo apx-serial set --mode=flow_meter
This command sets the serial mode to flow meter operation.
Data Capture
To check the current values from the flow meter, use the following command apx-serial-flw:
sudo apx-serial-flw status
This retrieves the latest flow meter readings from the Syrus device.
Data Processing & Integration
The system handles data internally, and there is no need to manually log data to a file. The apx-serial-flw status command provides real-time access to flow meter readings without requiring additional configurations.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| No data received | Incorrect wiring | Verify TX and RX connections |
| No power | Faulty connection | Check power supply and cables |
| Short communication range | Unshielded cables | Use shielded RS-232 cables |
Updated 2 days ago