1. Product Overview
The CERTEON Digital Display Turbine Flow Meter is designed for accurate measurement of liquid flow in various industrial applications. It features a high-definition LCD display for real-time instantaneous and cumulative flow monitoring. This device supports both external power supply with pulse or RS485 signal output and automatic switching to internal battery power for display-only operation when external power is unavailable.
It is suitable for measuring petroleum products, chemicals, water, and certain medical or process fluids, provided they are compatible with the chosen material (aluminum alloy or stainless steel).
Key Features:
- High-Precision Measurement: ±0.5% accuracy ensures reliable data for industrial applications.
- Multiple Output Options: Pulse or RS485 signal for seamless system integration.
- Rugged Build: Explosion-proof, corrosion-resistant materials for harsh environments.
- Rotatable LCD Display: High-definition, easy-to-read interface with real-time and cumulative flow data.
- Interference-Resistant Chip: Stable operation even in strong electromagnetic environments.
- One-Piece Impeller: Non-welded, impact-resistant with excellent dynamic balance.
- Waterproof and Crack-Resistant: Thickened casing for durability and long service life.
2. Specifications
| Parameter | Specification |
|---|---|
| Material | Aluminum Alloy / Stainless Steel (optional) |
| Caliber | DN20, DN25, DN32, DN40, DN50 |
| Connection Type | Thread, Clamp, or Flange (optional) |
| Power Supply | 5V-24V DC external power (pulse output, RS485 optional) / AAA battery (no output) |
| Rated Voltage | 5V-24V DC |
| Measuring Medium | Petroleum, Chemicals, Medicine, Water, compatible medical fluids |
| Accuracy | ±0.5% |
| Repeatability | ±0.3% |
| Max Working Pressure | 1.0 MPa |
| Flow Range | 0.1–50 L/min (Note: Specific flow ranges vary by caliber, e.g., 8-100 L/min for DN20, 10-120 L/min for DN25, 25-250 L/min for DN40, 30-300 L/min for DN50) |
| Display Units | QTS, PTS, L, GAL, m³ |
| Single Count Range | 0.00–9999.9 |
| Total Accumulation Range | 0–99999.9 |
| Display Type | LCD, simultaneous instantaneous and total flow display |
| Standby Time | Up to 1 year (battery mode) |
3. Installation and Setup
3.1 Preparation
- Ensure the selected material (aluminum alloy or stainless steel) of the flow meter is compatible with the measured liquid.
- Verify the correct caliber and connection type (thread, clamp, or flange) for your pipeline.
- Install the flow meter in the pipeline according to the flow direction indicated on the housing.
- Ensure the pipeline is thoroughly flushed and free of debris before installation to prevent damage to the turbine.
- If signal output (pulse or RS485) is required, connect an external DC power supply (5V-24V).
- If operating in battery mode, install AAA batteries. The device will automatically switch to battery power if external power is disconnected.
3.2 Installation Precautions
- Pipeline Placement:
- When installing in an open discharge pipeline, place the flow meter at the lower section of the pipeline.
- If the pipeline drop exceeds 5 meters, install an air release valve downstream of the sensor.
- For horizontal pipelines, install at the lower point. For vertical pipelines, install in an upward position. Avoid installing at the highest point of the pipeline or in a vertical downward position.
- It should ideally be installed at a rising section of the pipeline.
- Pump Connection: The sensor must never be installed at the pump inlet; it should always be installed at the pump outlet.
- Straight Pipe Lengths: Ensure there is at least 10D (where D = inner diameter of the flowmeter) length of straight pipe upstream of the flowmeter, and 5D length of straight pipe downstream. This ensures accurate flow measurement.
- Grounding: Ensure proper grounding when using RS485 communication to reduce electromagnetic interference.
4. Operation
4.1 Initial Operation
- Open the valve slowly to allow liquid to pass through the turbine smoothly.
- Avoid sudden pressure surges, which can damage the device.
- When powered externally, the device outputs a pulse signal by default. RS485 output is available if configured.
- If external power is disconnected, the device automatically switches to battery mode for display-only operation.
4.2 Data Reading
- The LCD displays the instantaneous flow rate and cumulative total flow.
- Use the display interface to view single count and total accumulation values.
- Confirm the measurement unit displayed before recording data.
- The “RESET” button can clear the current total.
- The “CAL” button is used for settings and switching between total count and instantaneous flow display.
5. Maintenance
5.1 Storage
- Store the device in a dry, ventilated environment.
- Keep away from corrosive gases.
5.2 Cleaning
- Clean the flow meter exterior with a soft, dry cloth.
- Do not use aggressive solvents, as these can damage the device.
5.3 Long-Term Use and Inspection
- If the device is not used for an extended period, remove the AAA batteries to prevent leakage and potential damage.
- Periodically inspect the turbine rotor for any signs of contamination or wear.
- Calibration is recommended at regular intervals according to industry standards to maintain accuracy.
6. Troubleshooting
This section provides solutions to common issues you might encounter with your flow meter.
| Problem | Possible Cause | Solution |
|---|---|---|
| No display or intermittent display | Low or dead batteries; external power supply issue; loose connection. | Replace AAA batteries; check external power supply (5V-24V DC) and connections. |
| Inaccurate flow readings | Debris in the pipeline or turbine; incorrect installation (e.g., insufficient straight pipe length); improper calibration; air bubbles in the fluid. | Flush the pipeline; ensure correct installation with required straight pipe lengths (10D upstream, 5D downstream); consider recalibration; check for air in the system. |
| No signal output (Pulse/RS485) | External power not connected or faulty; incorrect RS485 configuration; wiring issue. | Ensure external 5V-24V DC power is connected; verify RS485 settings; check wiring connections. Note: Signal output is not available in battery-only mode. |
| Display frozen or unresponsive | Temporary software glitch; power fluctuation. | Remove and reinsert batteries, or disconnect and reconnect external power to reset the device. |
7. Safety and Warning Information
- Electric Shock Hazard: Risk of electric shock when using external power supply. Ensure power is disconnected before wiring or performing any maintenance.
- Pressurized Pipeline Hazard: Release system pressure before installing or removing the flow meter. Failure to do so can result in serious injury.
- Explosive Atmospheres: This device is not suitable for use in explosive atmospheres unless specifically certified for such environments. Verify explosion-proof capability with the seller if required.
- Chemical Compatibility: Do not use with incompatible or highly corrosive fluids unless the stainless steel version is selected and chemical compatibility is confirmed.
- Child Safety: Keep out of reach of children.
- Disposal: Follow WEEE (Waste Electrical and Electronic Equipment) directives for proper disposal of electronic waste.
Note: The above warning information is for reference only. Final warning language must comply with the official language requirements of the destination country.
8. Compliance and Support
8.1 Compliance Disclaimer
This document is provided for product instruction purposes only and does not constitute legal advice. The seller is responsible for ensuring compliance with destination market regulations, including CE marking, EMC compliance, and applicable pressure equipment requirements.
8.2 Technical Support
For bulk orders, technical consultations, or any support needs, please feel free to contact us:
- WhatsApp: +86 19542723588
- Email: celiachen008@gmail.com
8.3 Additional Resources
A detailed user manual in PDF format is available for download: User Manual (PDF)
9. Frequently Asked Questions (FAQ)
- Q1: How do I choose the correct caliber for my application?
- You should select the caliber (e.g., DN20, DN25, DN32, DN40, DN50) based on the inner diameter of your existing pipeline and the expected flow rate range for your specific application.
- Q2: Can this flow meter be used with corrosive liquids?
- Yes, if you are measuring corrosive liquids, it is highly recommended to select the stainless steel version of the flow meter. Always confirm chemical compatibility before installation.
- Q3: What happens if the external power supply is disconnected during operation?
- The device is designed to automatically switch to its internal AAA battery power supply. In battery mode, the display will continue to show flow data, but signal output (pulse or RS485) will be temporarily unavailable.