FM-120-6 4-Digit Mechanical Fuel Flow Meter

Product Description

The FM-120-6 4-Digit Mechanical Fuel Flow Meter is a mechanical flow meter designed for accurate measurement of diesel, gasoline, and kerosene during fuel dispensing and transfer applications. Featuring a mechanical register driven by precision measuring wheels, the meter provides a 4-digit resettable subtotal display and an 8-digit non-resettable total display for monitoring fuel quantities.

With a 1-inch connection, a flow range of 20–120 L/min, and measurement accuracy of ±1%, the FM-120-6 is suitable for non-commercial fuel dispensing, fuel transfer systems, storage tanks, and equipment refueling applications. Its mechanical counting mechanism provides a straightforward solution without requiring an electronic display or external power supply.

Key Features

• 4-Digit Mechanical Flow Meter – Uses a mechanical register for fuel quantity measurement.
• 1-Inch Connection – Suitable for common fuel transfer and dispensing systems.
• 20–120 L/min Flow Range – Designed for medium-flow fuel transfer applications.
• ±1% Accuracy – Provides practical fuel quantity measurement for non-commercial applications.
• Resettable 4-Digit Subtotal – Allows the quantity of the current dispensing operation to be reset and recorded.
• 8-Digit Non-Resettable Totalizer – Maintains cumulative fuel quantity information.
• No External Power Required – Mechanical counting operation does not depend on an electronic power supply.
• Multiple Fuel Compatibility – Designed for diesel, gasoline, and kerosene.

Applications

The FM-120-6 mechanical fuel flow meter can be used for:

• Diesel fuel transfer
• Gasoline transfer
• Kerosene transfer
• Fuel dispensing equipment
• Fuel storage tanks
• Vehicle refueling
• Agricultural machinery
• Construction equipment
• Fleet fuel management
• Non-commercial fuel dispensing
• Mobile fuel transfer systems

Technical Specifications

Main Configuration

Meter Reading System

The FM-120-6 uses two mechanical readings for fuel quantity management:

4-Digit Resettable Subtotal

The 4-digit subtotal display records the quantity measured during the current dispensing operation. It can be reset before a new measurement, making it suitable for tracking individual fuel transfers.

8-Digit Non-Resettable Total

The 8-digit totalizer records the accumulated quantity measured by the flow meter. Unlike the subtotal register, the total reading is not reset during normal operation and can be used for long-term fuel usage tracking.

This dual-register design allows operators to monitor both individual dispensing quantities and cumulative fuel volume.

Product Advantages

Mechanical Measurement

The FM-120-6 uses a mechanical measuring mechanism and register rather than an electronic LCD display. This provides a straightforward solution for fuel transfer applications where simple operation is preferred.

No External Power Requirement

As a mechanical flow meter, the FM-120-6 does not require an external electrical power supply for its basic measurement and display function.

Dual Quantity Reading

The resettable subtotal and non-resettable totalizer provide two levels of fuel quantity information, allowing operators to monitor individual transfers as well as accumulated usage.

Wide Fuel Compatibility

The meter is specified for diesel, gasoline, and kerosene, making it suitable for a range of fuel transfer and dispensing applications.

Practical Flow Range

With a flow range of 20–120 L/min, the meter is designed for medium-flow fuel transfer systems and can be integrated into suitable pumps, tanks, and dispensing equipment.

Installation Considerations

The FM-120-6 should be installed in a fuel transfer system that operates within the specified 20–120 L/min flow range and maximum pressure range of 0.05–1.0 MPa.

When integrating the meter into a fuel transfer system, the connection size, pump capacity, hose configuration, fuel type, and installation direction should be matched to the actual application.

For best measurement performance, the flow conditions should remain within the specified operating range of the meter.

FAQ

1. What is the FM-120-6 mechanical fuel flow meter used for?

The FM-120-6 is used to measure the quantity of diesel, gasoline, or kerosene transferred through a fuel dispensing or transfer system. It is suitable for non-commercial applications such as vehicle refueling, fuel storage tanks, agricultural machinery, construction equipment, and mobile fuel transfer systems.

2. What is the difference between the subtotal and totalizer?

The FM-120-6 has two mechanical readings. The 4-digit subtotal register can be reset and is used to record the quantity of an individual dispensing operation. The 8-digit totalizer cannot be reset during normal operation and records the accumulated quantity measured by the meter. This allows operators to monitor both individual transfers and total fuel usage.

3. Does the FM-120-6 require electricity or batteries?

No external power supply is required for the basic mechanical measurement and display function. The meter uses a mechanical measuring and counting mechanism driven by the flow of liquid through the meter. This makes it suitable for fuel transfer systems where a simple mechanical meter is preferred.

4. What is the flow range of the FM-120-6?

The specified flow range is 20–120 L/min, with a measurement accuracy of ±1%. For reliable measurement, the actual system flow should remain within the specified operating range. Pump capacity, hose size, fuel viscosity, and system pressure can affect actual operating conditions.

5. What should be considered when selecting a mechanical fuel flow meter?

The main factors include fuel type, required flow rate, connection size, operating pressure, measurement accuracy, and whether a resettable subtotal or cumulative totalizer is required. For the FM-120-6, the recommended operating flow range is 20–120 L/min, the connection size is 1 inch, and the applicable fluids are diesel, gasoline, and kerosene.