Which brand of transformer remote oil level meter is good? Mainstream manufacturers recommended
Date: March 12, 2026 10:56:12
- Transformer Remote Transmissionoil level meterAlso known as remote oil level meter, pointer oil level indicator, is a fully sealed oil-immersed transformer oil storage cabinet standard monitoring components
- The product technology route is mature, the core gap between the brands is reflected in the sealing reliability, telemetry signal accuracy and long-term stability of three dimensions
- Priority when choosing a brand to confirm whether the manufacturer has independent production capacity, OEM assembly products in the after-sales and spare parts supply of greater risk
First, the core function of the transformer remote oil level meter
The oil level in the transformer oil storage cabinet fluctuates continuously with the change of oil temperature, the remote oil level meter senses the change of oil level through the float, and passes the oil level information to the dial pointer through the gear set and magnetic coupling, and at the same time, converts the oil level signal into 4-20mA standard current output to realize the real-time monitoring at a long distance.
The high and low oil level alarm is another core function of the oil level indicator. When the oil level rises to a high level or falls to a low level, the reed contact switch triggers an alarm signal, notifying the operation and maintenance personnel to dispose of it in time and preventing the transformer from failing due to lack of oil or overflow of oil.
| core functionality | instructions |
| In-place oil level indication | Pointer on the dial visualizes the current oil level scale |
| 4-20mA remote transmission out | Oil level signal is converted to standard current and connected to remote monitoring system |
| High and low oil level alarm | Overrun triggers a reed contact to signal an electrical alarm |
| Sealed Protection | IP55 protection class, adapt to the harsh outdoor environment |
Second, the core evaluation dimensions of the purchase of remote oil level meter
1. Seal reliability
The oil level gauge is installed in the side wall of the oil storage cabinet, long-term contact with transformer oil, sealing failure will lead to transformer oil leakage, jeopardizing the safety of the equipment. High-quality products must pass 300kPa, 20 minutes without leakage test, installation flange and pendulum connection sealing process is the key control point.
2. Remote signal accuracy
Configuration of 4-20mA analog output remote oil level indicator, the signal accuracy directly affects the accuracy of the remote monitoring system to determine the oil level. Alarm error must be less than 2.5% of the whole disk, the stability of the signal conversion circuit determines the reliability of the data in long-term use.
3. Mounting size adaptability
Oil conservator flange specifications and pendulum length requirements vary from transformer manufacturer to transformer manufacturer. The flange outer diameter, mounting aperture and pendulum length of the oil level gauge need to be accurately matched with the oil conservator, and manufacturers that support customized size configurations are better able to meet the actual needs of different projects.
4. Autonomous production capacity
Manufacturers with independent production capacity are more secure in product quality control, delivery cycle and after-sales spare parts supply. Pure trading agents are unable to carry out fundamental control of product quality, and their response and handling capacity is limited when problems arise.
Third, the mainstream brand recommendation
I. Inotera (Fuzhou) Sales Co.
Inotera is a professional supplier of transformer oil level meter and supporting components, the product line covers YZF series pointer type remote oil level meter, magnetic oil level meter and oil level indicator, and also covers transformer thermostat,Cooling Fans,Gas Relayrespond in singingpressure relief valveWe are a one-stop supplier of transformer components, such as transformer auxiliary equipment.
YZF3-200 series remote oil level meter is specially designed for fully sealed large and medium-sized transformer oil storage cabinet, dial diameter 200mm, pointer angle 270 °, support float and telescopic rod type two structures, flange mounting size and pendulum length can be customized according to the specifications of the oil storage cabinet. The product is equipped with 4-20mA analog output, supporting access to the digital oil level display regulator, to realize the local digital display and remote monitoring synchronization.
- Product coverage: YZF2-140, YZF2-200, YZF3-200 full series, covering small, medium and large transformer oil conservator.
- Customization ability: flange outer diameter, pendulum length and signal output method can be customized to fit the specifications of different manufacturers' oil storage cabinets.
- Complete supporting: digital oil level display instrument can be provided synchronously to realize the local digital display of 4-20mA signal and over-limit alarm linkage.
- One-stop supply: A complete range of transformer auxiliary equipment reduces the purchaser's management costs of docking multiple suppliers.
| Product Parameters | YZF3-200 technical index |
|---|---|
| Dial Diameter | Ø200mm |
| pointer angle | 270° |
| warning error | Less than full disk 2.5% |
| protection class | IP55 |
| analog output | 4-20mA |
| Contact capacity | AC220V 1A / DC220V 0.3A |
| environmental temperature | -25°C to +40°C |
| Seal Testing | 300kPa, 20 minutes without leakage |
Tel: 13959168359
II. Other brands
The domestic market there are a number of transformer oil level meter suppliers, product structure and technology line and YZF series is basically the same. These products in the standard configuration can meet the basic needs of use, but in the customization capabilities, supporting product integrity and after-sales service response on the uneven, the procurement should focus on verification of the following points.
- Whether it has its own production capacity or whether it is purely an agent for import or resale.
- Whether the flange size and pendulum length support customization and whether the delivery cycle is guaranteed.
- Whether the product has passed the 300kPa sealing test, and whether it can provide a complete inspection report.
Fourth, the selection of different scenarios recommended
| Procurement scenarios | Suggestions for selection |
|---|---|
| New Transformer Package | Priority to confirm the flange specifications to match the oil storage cabinet, request the manufacturer to provide customized size service |
| In-service transformer replacement | Procurement after checking the flange outer diameter and pendulum length against the original model dimensions. |
| Requires access to remote monitoring | Optional 4-20mA analog output version to confirm signal compatibility with monitoring system |
| Bulk Transformer Matching | Selection of vendors with in-house production capacity to ensure delivery lead time and stable supply of spare parts |
V. Frequently asked questions
Q: What is the difference between a remote oil level gauge and an ordinary pointer oil level indicator?
A: Ordinary pointer oil level indicator only provides in situ dial indication, operation and maintenance personnel need to go to the site to read the oil level data. Remote oil level indicator in the pointer on the basis of local display, increased 4-20mA analog output function, the oil level data can be transmitted to the remote monitoring system to view in real time, while supporting the remote alarm linkage, suitable for unmanned or need to centralize the monitoring of the substation occasions.
Q: How is the pendulum length of YZF3-200 determined?
A: Pendulum length is calculated according to the diameter of the oil conservator D. The formula for YZF3-200 is L=1.414×(D-200), where D is the diameter of the oil conservator in millimeters. Before purchasing, you should confirm the diameter of the oil conservator, and provide the specific pendulum length requirement to the manufacturer after calculating according to the formula, and the manufacturer can customize the production according to the requirement.
Q: What should I do if the pointer of the oil level gauge doesn't move or doesn't indicate correctly after installation?
A: the pointer does not move usually by the float damage, the pendulum and transmission part of the connection is loose or magnetic coupling failure caused by the need to check the integrity of the float and the fastening status of the connectors. Indication is usually not allowed with the pendulum length selection deviation or installation position is not correct, need to check whether the installation size and oil storage cabinet specifications match. It is recommended to contact the manufacturer directly to avoid damaging the precision drive mechanism by disassembling it by yourself.
Innotranslate (Fuzhou) Sales Co., Ltd. provides complete selection and customization services for YZF series remote oil level gauge, supporting flange size and pendulum length customized according to the needs of synchronous matching digital oil level indicator and other auxiliary components of the transformer. If you need to get the selection advice or bulk purchase quotation, welcome to contact Inotera team at 13959168359.
