1. Product Description
The CERTEON PVC Non-Display Pipe Flowmeter is a pulse-output liquid flow sensor designed for industrial, agricultural, and water treatment applications. Constructed from corrosion-resistant PVC or UPVC, it is suitable for measuring the flow of water, weak acids, and alkaline solutions. The device provides NPN pulse output as standard and is intended for integration with external control or monitoring systems. RS-485 communication is supported only on display versions.
2. Specifications
| Specification | Details |
|---|---|
| Power Supply | 3.5-24 V DC (External DC power supply) |
| Rated Voltage | 3.5-24 V DC |
| Material | PVC / UPVC |
| Pipe Size Range | DN15 to DN80 (Inner Diameter 20.3mm - 90.5mm) |
| Flow Range | Up to 3000 L/min (varies by model) |
| Accuracy | ±5% of reading |
| Temperature Range | ≤80°C (some models ≤60°C) |
| Pressure Rating | ≤1.75-2.0 MPa |
| Signal Output | NPN Pulse (default for non-display), RS-485 (with display) |
| Unit Selection | Liter, Gallon, Kiloliter (display models only) |
| Alarm Output | NO/NC, adjustable delay time (display models only) |
| Installation Condition | Full pipe recommended for accurate measurement |
| Package Contents | Flowmeter x1, sealing accessories |
3. Key Features
- ±5% High Accuracy: Provides precise flow measurement for industrial, agricultural, and water treatment applications.
- Adjustable K-Factor: Configurable flow coefficient (K value) for calibration and system integration.
- Selectable Units: Supports liters, gallons, and kiloliters for both total and pulse outputs (display models only).
- Alarm Output with Delay: Instantaneous flow alarms with adjustable normally open/closed (NO/NC) status and delay settings (display models only).
- Optional RS-485 Communication: Available on display models for remote monitoring and system integration.
- Corrosion and Chemical Resistant: Built from durable PVC/UPVC, suitable for acid, alkali, and chemical fluids without clogging.
- Wide Voltage Range: Operates from 3.5V to 24V DC, flexible for various industrial control systems.
4. Applications
- Agricultural Irrigation Systems
- Power Plant Ultrafiltration
- Municipal Water Treatment
- Industrial RO and Water Purification
- Chemical Industry
5. Setup Instructions
5.1. Preparation
- Ensure the selected flowmeter model matches the pipe diameter and expected flow range for your application.
- Verify that the power supply voltage is within the specified range of 3.5-24 V DC.
5.2. Installation
- Install the flowmeter in a straight pipe section.
- Ensure the pipe is completely filled with liquid during operation for accurate measurement.
- Confirm proper wiring according to the NPN pulse output configuration for non-display versions or RS-485 for display versions.
Wiring Guide:
LCD & Digital Version:
- Brown: Power Positive (10-30VDC)
- Blue: Power Negative
- Gray: RS-485 (-)
- Yellow: RS-485 (+)
- Black: Total Flow FTM/OP2 Output Control
- White: Instant Flow LPM/OP1 Output Control
Non-Display Sensor Wiring:
- Red (IN): Connect to Positive
- Yellow (OUT): Signal Output Line
- Black (GND): Connect to Negative
6. Operating Instructions
6.1. Power On and Flow
- Power on the device after completing all wiring connections.
- Start the fluid flow through the pipe.
- Ensure that the flow rate is within the specified operating range of the flowmeter. If the flow rate is below the minimum measurable range, no pulse signal will be generated.
6.2. Display Configuration (for Display Versions)
For models equipped with a display, you can configure various parameters directly on the device:
- Unit Selection: Choose between Liter, Gallon, or Kiloliter for flow measurement.
- K-Factor: Set the flow coefficient (K-factor) for accurate flow calculation.
- Alarm Parameters: Configure alarm values, output status (Normally Open/Normally Closed), and adjustable delay times.
6.3. Data Reading
- For Non-Display Versions: Read the NPN pulse signal output from the connected controller or PLC. Use the configured K-factor to calculate the actual flow rate and total flow.
- For RS-485 Models: Connect to a compatible monitoring system for data acquisition and remote control.
7. Maintenance
7.1. Storage
- Store the product in a dry, ventilated environment away from direct sunlight.
- Avoid long-term exposure to high humidity or corrosive gases.
7.2. Cleaning and Inspection
- Clean the exterior with a soft dry cloth. Do not use strong solvents that may damage PVC or UPVC surfaces.
- Inspect sealing components periodically and replace them if signs of wear or leakage appear.
8. Troubleshooting
- Q: No RS-485 communication.
- A: RS-485 communication is only supported on models with a display. Ensure you have a display-equipped model. Also, verify wiring connections.
- Q: No signal output from the flow meter.
- A: Ensure the fluid flow rate is within the specified minimum and maximum operating range for your model. If the flow is too low, no signal will be generated. Also, check power supply and wiring.
- Q: Inaccurate flow measurement.
- A: Ensure the pipe is completely filled with liquid during measurement. Air pockets or partial flow can lead to inaccuracies. Verify the K-factor setting on display models. Ensure the flowmeter is installed in a straight pipe section as per installation guidelines.
- Q: Display module is not working or damaged.
- A: The display module is not waterproof. Ensure adequate dustproof and waterproof protection during installation. Indoor installation is recommended to avoid direct exposure to rain or extreme outdoor environments.
9. User Tips
- For remote monitoring and alerts (e.g., for water flow presence/absence), consider using a display-equipped model with RS-485 communication. This allows integration with compatible monitoring systems that can provide app-based notifications.
- Always ensure full-pipe flow for the most accurate readings.
- Regularly check the flowmeter's sealing components, especially in demanding environments, to prevent leaks and maintain performance.
10. Safety Warnings
- Risk of Electric Shock: Always disconnect the power supply before any installation, maintenance, or inspection procedures.
- Pressure and Temperature Limits: Do not use the product beyond its specified maximum rated pressure or temperature to avoid rupture or leakage.
- Chemical Compatibility: Ensure chemical compatibility between the measured fluid and the PVC or UPVC materials of the flowmeter before use.
- Potable Water Systems: This device is not intended for potable water systems unless specifically certified for such applications.
- Keep Out of Reach: Keep the device out of reach of children.
- Proper Disposal: Follow WEEE (Waste Electrical and Electronic Equipment) directives for electronic waste disposal.
Note: The above warning information is for reference only. Final warning language must comply with the official language requirements of the destination country.
11. Warranty and Support
For technical consultations, customized products, or any support needs, please contact CERTEON customer service. We are here to help!
Contact Information:
- WhatsApp: +86-19542723588
- Email: celiachen008@gmail.com
12. About CHIKONG Automation
CHIKONG Automation is dedicated to precision, innovation, and trust, serving as a trusted partner in industrial automation. The following video provides an overview of their operations and commitment to quality.