Flow Meter Connection Guide

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

Configuration & Communication Setup

Verify Flow Meter Version

To verify the current configuration of the flow meter, use:

apx-serial-flw status

This command returns a JSON response:

{
  "state": "connected",
  "pwr_disconnections": 129,
  "sensor_disconnections": 22,
  "calibration": 1682,
  "cumulative_liters": 3066,
  "timestamp": 1740568153,
  "display_state": 0,
  "liters_dispatched": 20260,
  "flow": 0
}

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