What dimensions and signal requirements should be confirmed before replacing a transformer oil level gauge?

• oil level meterBefore replacing the unit, verify the original model number, mounting flange, swing arm length, and whether a remote signal is required.
• The flange dimensions, rocker arm length, and output configuration of the YZF3-200 oil level gauge must be confirmed on a project-by-project basis.
• If on-site measurements are not available, it is not recommended to directly determine a replacement model.

Transformer oil level gauges may appear simple in design, but when replacing one, you shouldn’t base your decision solely on whether it’s “dial-type” or “remote-transmission type.” Factors such as flange dimensions, rocker arm length, oil reservoir design, signal output, and alarm requirements all influence the selection process.

Innotongda supplies transformer oil level gauges such as the YZF3-200 and YZF2-200. The YZF3-200 is a pointer-type, float-type oil level gauge with a dial diameter of 200 mm, designed for oil level indication and high/low oil level alarms in transformer oil reservoirs. When 4–20 mA analog remote transmission is required, verify that the model selected is configured with the appropriate output; do not assume that the “YZF3-200” model inherently supports remote transmission. Flange dimensions and rocker arm length must also be confirmed based on the oil tank’s structure.

If a customer simply says, “The oil level gauge is broken,” ask them to provide three additional photos: the front view of the oil level gauge, the flange on the side, and the location where the oil reservoir is mounted. If remote transmission is required, also ask where the data will be sent—to an on-site meter, a back-end system, or an existing monitoring device.

This allows suppliers to verify matching relationships for the same project, reducing the need for repeated communication.

For example, the customer first provides photos of the old part and its installation location, and then the supplier verifies whether it belongs to the YZF series, whether remote transmission is required, and whether the flange dimensions and rocker arm length need to be adjusted. Only after completing these verifications can a determination be made as to whether a direct replacement is possible, thereby avoiding purchasing the wrong part due to identical model abbreviations. For sites where the old part has not been removed, it is also recommended to first take photos of the side of the oil reservoir, the oil level gauge dial, the mounting bolts, and the surrounding space, and then supplement the dimensions later based on maintenance conditions.

Related FAQs

1. Is the YZF3-200 definitely a remote oil level gauge?

Not necessarily. YZF3-200 refers to an oil level gauge with a pointer, a float, and a dial diameter of 200 mm; if remote output is required, you must also confirm the full model number and output configuration.

2. Is it sufficient to consider only the diameter when replacing an oil level gauge?

Not recommended. It also depends on the mounting flange, the length of the swing arm, signal requirements, and the on-site structure.

3. Can I request a quote without providing drawings?

You can start by sending photos of the old part and the installation location, and then provide the dimensions or drawings later.

4. Can an analog meter be converted to a remote-reading meter?

This can be used for discussing requirements, but compatibility must be confirmed based on on-site installation conditions and signal connection requirements.

5. How do I verify the output signal?

The output signal cannot be determined based on the series name alone; it must be confirmed based on the full model number and project requirements.