A mechanical oil gauge is a high-precision volumetric flow meter that displays the instantaneous flow and cumulative flow of diesel. The cumulative flow can be reset and can be integrated with PLC quantitative control systems for precise control. This flow meter offers more stable performance and accuracy than standard electronic flow meters, with a longer service life. Properly installed, it guarantees sufficient precision in use, typically achieving an accuracy of 0.5 grade in cumulative values, making it a relatively accurate flow measurement instrument.
The mechanical oil gauge is divided into vibration-resistant and anti-vibration models. The vibration-resistant model features a helical spring tube and case filled with high-viscosity mineral oil, which serves as a damper, reducing pointer vibration and enhancing vibration resistance. The mechanical oil gauge integrates level detection and display, eliminating the need for external devices. It can directly display level output signals. Optional, it can output 9 resistance signals. Resistance ranges can be customized according to customer requirements. High and low level alarm functions can be added as needed.

Installation requirements for mechanical oil gauges:
1. Choose locations with minimal dust, no corrosive gases, minimal vibration, and far from heat sources whenever possible.
2. Flowmeter installation environment temperature is -15 to 40°C.
Technical requirements for mechanical oil gauge installation:
1. The elliptical gear flow meter has no specific requirements for the upstream and downstream straight pipe sections. It can be installed horizontally or vertically, with the rotational axis of the flow meter's elliptical gears kept parallel to the ground during installation.
2. During on-site installation, pay attention to the arrow direction on the flow meter housing and ensure it aligns with the direction of fluid flow.
3. The fluid being tested should not contain particles or impurities; otherwise, a filter must be installed before the flowmeter's inlet. If the fluid contains a large amount of debris, the filter's aperture should be one size larger than the standard or a parallel double filter should be installed. If gas is present, an exhaust device should be installed.
4. The fluid being tested should fill the measuring chamber of the flow meter and its connecting pipes before and after. If the fluid contains gas, a gas separator should be installed before the flow meter and filter.
5. The flowmeter is installed on a pipe with the same nominal inner diameter as its inlet and outlet connections. When connecting the pipe to the flowmeter, the sealing parts should not protrude into the fluid.
6. For continuous flow pipelines, a bypass pipeline should be installed when the flowmeter is mounted on a horizontal pipe to facilitate cleaning and maintenance. When the flowmeter is mounted on a vertical pipeline, it should be installed in the bypass pipeline to prevent debris from entering the instrument. When the fluid flows from bottom to top, the vertical pipe above the flowmeter should be as short as possible to minimize the sedimentation of impurities in the upper piping.

Mechanical fuel gauges are a traditional type of gauge that uses a float inside the fuel tank and a pull string to sense the fuel level, which is then reflected on the dashboard through a needle to indicate the remaining fuel. These mechanical fuel gauges operate without power and can be customized to include high and low level alarm functions as per customer requirements. The mechanical fuel gauge is a simple tool for detecting hydraulic system pressure, featuring a hollow spring tube bent into an arc, a pull rod, a rack, gears, a needle, and a damping mechanism. When checking the oil pressure with a mechanical fuel gauge, it should be in a vertical position with the line of sight perpendicular to the gauge face to accurately read the pressure value.
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