1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your GRYVOZE 1 Inch Digital Turbine Fuel Flow Meter. This device is designed for accurate measurement of various liquids, including water, diesel, gas oil, gasoline, kerosene, methanol, and E15. It features a clear LCD display for real-time monitoring and a dual rotary swivel for enhanced fueling efficiency.
Image 1.1: The GRYVOZE Digital Turbine Fuel Flow Meter, including the meter unit, a 1-inch NPT fuel hose nozzle swivel, and two 3/4-inch adapters.
2. Key Features
- Accurate Measurements: Provides precise readings with an accuracy of ±1% for various liquids.
- Digital LCD Display: Clear screen shows real-time flow rates, accumulated totals, and instantaneous flow. Single count range: 99999; Total cumulative count range: 29999999.
- Dual Rotary Design: The included fuel hose swivel offers 360-degree free rotation at both ends for optimal nozzle positioning.
- Precision Threads: Dual 1-inch NPT threads ensure secure, leak-free connections with compatible fuel hoses and nozzles.
- Versatile Unit Options: Easily switch between GAL (US Gallons), QTS (Quarts), PTS (Pints), L (Liters), and m³ (Cubic Meters).
- Non-Volatile Memory: Retains data even when power is off or batteries are replaced.
- Auto Turn-Off: Display automatically turns off after 10 minutes of inactivity to conserve power.
- Anti-Electromagnetic Interference: Designed to minimize interference from nearby pumps or motors.
3. Installation Guide
Proper installation is crucial for accurate readings and safe operation. Please follow these steps carefully:
- Unpack Components: Carefully remove the flow meter, swivel, and any adapters from the packaging. Inspect all parts for damage.
- Determine Flow Direction: Identify the flow direction arrow on the side of the flow meter. The meter must be installed so that liquid flows in the direction indicated by this arrow.
- Connect Swivel (Optional): If using the swivel, attach it to your fuel hose or nozzle using the 1-inch NPT threads. Ensure connections are tight to prevent leaks.
- Connect Flow Meter: Attach the flow meter to your system (e.g., between a pump and nozzle, or in a pipeline). Use the 1-inch NPT threads. If adapting to 3/4-inch connections, use the provided adapters. Apply thread sealant (not included) for a leak-proof seal.
- Battery Installation: The flow meter requires 2 x AAA LR03 batteries. Open the battery compartment (usually on the back or side of the display unit) and insert the batteries, observing polarity.
- Check for Leaks: After installation, slowly introduce liquid into the system and check all connections for any leaks. Tighten as necessary.
- Positioning: The display panel can be freely adjusted for optimal viewing.
- Electromagnetic Interference: Due to its anti-electromagnetic interference function, the flow meter can be installed closer to pumps or motors than other models. However, for best performance, avoid direct contact with strong magnetic fields if possible.
Image 3.1: Ensure the flow meter is installed with the liquid flow matching the arrow direction on the device. The image also shows the durable turbine component.
Image 3.2: View of the PCB circuit board and the battery compartment, indicating the use of 2 x AAA LR03 batteries. Note: The PCB circuit board is not waterproof.
Image 3.3: The flow meter is equipped with an anti-electromagnetic interference function, allowing for installation in proximity to pumps or motors without significant impact on accuracy.
4. Operating Instructions
The digital display provides clear information and is easy to operate.
4.1. Display Overview
Image 4.1: Breakdown of the LCD display, showing the Single Cumulative Flow, Set/Query Key, Unit, Clear Key, and Total Cumulative Flow indicators.
- Instantaneous Flow: Displays the current flow rate.
- Single Cumulative Flow: Shows the total volume measured since the last reset.
- Total Cumulative Flow: Displays the grand total volume measured over the lifetime of the device. This value cannot be reset.
Image 4.2: The LCD monitor clearly displays both instantaneous flow (top large numbers) and single cumulative flow (bottom smaller numbers).
4.2. Unit Setting
The flow meter supports five different measurement units:
- GAL (US Gallons)
- QTS (Quarts)
- PTS (Pints)
- L (Liters)
- m³ (Cubic Meters)
Image 4.3: The flow meter offers five selectable measurement units to suit various needs.
To change the measurement unit:
- Simultaneously press and hold the "CALIBRATE" (C) and "DISPLAY" (D) keys for more than 5 seconds to enter the metering unit setting mode.
- Press the "DISPLAY" (D) key to cycle through the available units (GAL, QTS, PTS, L, m³). The default unit from the factory is Liters (L).
- Once your desired unit is displayed, press the "CALIBRATE" (C) key for 3 seconds to save the setting and exit the metering unit setting mode.
Image 4.4: Visual guide for changing the measurement unit on the flow meter's display.
4.3. Auto Turn-Off and Low Battery Alert
- The display will automatically turn off after 10 minutes of inactivity to conserve battery life. It will turn on automatically when liquid flow is detected or by pressing any key.
- When the battery is running low, a battery icon will appear on the display screen, indicating the need for battery replacement.
Image 4.5: The flow meter features an auto turn-off function after 10 minutes of inactivity and displays a low battery alert when necessary.
5. Maintenance
- Cleaning: Wipe the exterior of the flow meter with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: When the low battery indicator appears, replace the 2 x AAA LR03 batteries promptly. Ensure correct polarity. The non-volatile memory will retain your data during battery replacement.
- Storage: If storing the flow meter for an extended period, remove the batteries to prevent leakage. Store in a cool, dry place.
- Water Exposure: The PCB circuit board is not waterproof. Avoid exposing the flow meter to excessive moisture or submerging it in liquid.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low batteries; Auto turn-off activated. | Replace batteries; Press any key or initiate flow. |
| Inaccurate readings. | Incorrect installation direction; Air in the line; Debris in turbine; Calibration needed. | Verify flow direction arrow; Purge air from system; Inspect and clean turbine; Refer to calibration instructions (if applicable, not detailed in this manual). |
| Liquid leakage at connections. | Loose connections; Insufficient thread sealant; Damaged threads/seals. | Tighten connections; Reapply thread sealant; Inspect and replace damaged components. |
| Display not responding to button presses. | Batteries dead; Internal malfunction. | Replace batteries; If problem persists, contact customer support. |
7. Specifications
Below are the technical specifications for the GRYVOZE Digital Turbine Fuel Flow Meter:
| Parameter | Value |
|---|---|
| Accuracy | ±1% |
| Flow Range | 2.6-26 GPM (10-100 LPM) |
| Working Pressure | 6 Bar |
| Single Count Range | 99999 |
| Total Cumulative Count Range | 29999999 |
| Thread Type | 1 Inch NPT |
| Material | Aluminum Alloy (Housing), PPS (Turbine) |
| Applicable Medium | Water, Diesel, Gas Oil, Gasoline, Kerosene, Methanol, E15 (Not suitable for drinking water, alkaline water, or other corrosive liquids) |
| Battery Type | 2 x AAA LR03 batteries |
Image 7.1: Detailed parameter comparison for 1-inch and 3/4-inch models, highlighting material, thread type, flow range, adapter, maximum working pressure, and applicable medium.
Image 7.2: Specifications for the fuel hose swivel, detailing 1-inch Dual NPT Threads, 360° Rotation, 44-73 psi Working Pressure, and 32 gpm Max. Flow Rate, along with dimensions.
8. Warranty and Support
For warranty information, technical support, or any inquiries not covered in this manual, please refer to the official GRYVOZE website or contact their customer service directly. Contact details can typically be found on the product packaging or the brand's official online presence.
Visit the GRYVOZE Store: GRYVOZE Official Store