VEGAMAG 81 Product Overview
VEGAMAG 81 is a magnetic flap level gauge based on the magnetic coupling principle, suitable for continuous level measurement of liquid media. It uses a float that rises and falls with the liquid level to drive the magnetic flaps to flip, visually indicating the liquid level height through red and white color changes.
The instrument has a simple structure and clear readings, and is widely used in storage tanks and process vessels in the chemical, water treatment, petroleum, and other industries. This article provides the VEGAMAG 81 Chinese manual download and summarizes key technical information.
Download VEGAMAG 81 Chinese Manual.pdf
Working Principle and Main Features
Measuring Principle
The float contains a permanent magnet and moves up and down along the measuring tube as the liquid level changes. The magnetic field passes through the tube wall to drive the external flaps to flip, achieving local liquid level indication.
Optional magnetostrictive transmitters or reed switches can output 4-20mA signals or switching values for remote monitoring and alarms.
Core Features
- Local display: Red and white flaps provide clear contrast, and readings can be taken without power supply.
- Sealed isolation: The measuring tube is completely isolated from the indicator, suitable for high pressure, high temperature, and corrosive media.
- Multiple materials: Wetted parts can be selected from 304/316L stainless steel, PVC, PTFE, etc.
- Flexible installation: Supports side, top, and bottom mounting.
Main Technical Parameters
The table below lists typical parameters of the VEGAMAG 81; refer to the actual selection sample for specifics.
| Parameter | Typical Range/Description |
|---|---|
| Measuring range | 0 ~ 6000 mm (longer customizable) |
| Accuracy class | ±10 mm (local indication) |
| Working pressure | ≤ 4.0 MPa (depending on material) |
| Working temperature | -40 ~ +200 ℃ (depending on sealing material) |
| Medium density | ≥ 0.5 g/cm³ |
| Wetted materials | 304/316L, PVC, PTFE, etc. |
| Output signal | 4-20mA / switching value (optional) |
Installation and Commissioning Points
Installation Steps
- Confirm that the instrument range, pressure rating, and medium compatibility meet the working conditions.
- Install the level gauge vertically on the side or top of the vessel to ensure the float can rise and fall freely.
- Connect the process flange and tighten the bolts evenly to avoid gasket misalignment.
- If equipped with a remote transmitter, wire it according to the manual and power it on for warm-up.
- Slowly fill the medium and observe whether the flaps flip continuously without jamming.
Precautions
- The installation location should avoid direct impact from the feed inlet to prevent severe float fluctuation.
- The medium must not contain a large amount of ferromagnetic impurities to avoid attracting the float.
- Regularly clean the measuring tube to prevent scaling from affecting float movement.
Selection Recommendations and FAQs
Selection Points
- Medium density: Below 0.5 g/cm³ requires a specially customized float.
- Corrosiveness: For strong acids and alkalis, PTFE-lined or PVC materials are recommended.
- Remote transmission requirements: When connecting to a control system, choose a 4-20mA transmitter.
- Explosion-proof occasions: Intrinsically safe or flameproof switches/transmitters should be selected.
FAQs
Flaps not flipping? Check whether the float is stuck, the medium density is too low, or magnetic impurities are present.
Remote signal fluctuating? Confirm the transmitter wiring is secure and avoid routing parallel to power cables.
For more detailed instructions, please download the VEGAMAG 81 Chinese manual to consult the complete installation, commissioning, and maintenance chapters.