VEGASON 61/62/63 Ultrasonic Level Transmitter Selection Guide

VEGASON 61, 62, and 63 Ultrasonic Level Measurement Instruments: Core Differences and Selection Guide

The VEGASON series ultrasonic level measurement instruments from the German company VEGA, with their non-contact measurement advantages, are widely used in industrial liquid level and solid bulk material measurement scenarios. Among them, although the VEGASON 61, 62, and 63 products belong to the same series, they have significant differences in measurement capability, accuracy performance, connection methods, and applicable scenarios. Accurately distinguishing the characteristics of the three is key to achieving efficient process control and cost optimization.

This article will provide a comprehensive selection reference for industrial users through parameter comparison, core difference analysis, and selection path organization.

1. Core Parameter Comparison: Quickly Locate the Boundaries of Basic Capabilities

The table below systematically summarizes the differences in key technical parameters among VEGASON 61, 62, and 63, helping you quickly determine the capability range of each model.

Feature	VEGASON 61	VEGASON 62	VEGASON 63
Maximum measuring range (liquid)	5 m	8 m	15 m
Maximum measuring range (solid)	2 m	3.5 m	7 m
Measurement accuracy	±10 mm	±4 mm	±10 mm
Process connection	G1½" or 1½"NPT (standard thread)	G2" or 2"NPT (standard thread)	Hygienic connection (e.g., Clamp 2"-4")
Typical applications	Small containers, open storage tanks	Medium and small storage tanks, silos	Large storage tanks, high hygiene requirements (food / pharmaceutical)
Core positioning	Economical, basic applications	Balanced, high precision	Large range, dedicated hygienic

2. Core Difference Analysis: Precise Matching from "Capability" to "Scenario"

The differences among the three instruments are not simply "parameter upgrades" but "customized designs" for different industrial needs. The core differences can be summarized into three dimensions.

1. Measurement Range and Capability: Covering "Small-Medium-Large" Scenarios

• VEGASON 61: Focuses on "small scenarios," with a liquid range of up to 5 m and solid up to 2 m, sufficient for "short-distance measurement" needs such as small laboratory containers and open workshop liquid storage tanks, emphasizing the economy of "good enough."
• VEGASON 62: Expands to "medium scenarios," with liquid range increased to 8 m and solid to 3.5 m, while optimizing accuracy from ±10 mm to ±4 mm. This accuracy improvement is a key breakthrough, meeting "process control level" requirements in industrial production (e.g., quantitative material replenishment in small and medium silos).
• VEGASON 63: Focuses on "large + special scenarios," with liquid range directly doubled to 15 m and solid to 7 m, covering "long-distance measurement" in large storage tanks (e.g., chemical raw material tanks, power plant reservoirs). More importantly, its hygienic connection design (e.g., Clamp clamps, pipe bolts) prevents medium residue, perfectly adapting to industries with extremely high "hygiene level" requirements such as food, beverage, and pharmaceuticals.

2. Accuracy Performance: Choose "Standard" or "High Precision" as Needed

Accuracy is one of the core indicators distinguishing the three instruments and must be selected based on actual control requirements.

• If only "level monitoring" is needed (e.g., determining whether a container is full), the ±10 mm accuracy of VEGASON 61 and 63 is fully sufficient.
• If "precise control" is needed (e.g., material proportioning, quantitative discharge), the ±4 mm accuracy of VEGASON 62 is the only choice. For example, in plastic pellet production, the material quantity in the silo needs precise control to ensure product quality; here, the high accuracy of the 62 can significantly reduce production errors.

3. Process Connection: Adapting to "General" or "Hygienic" Environments

The process connection directly determines whether the instrument can adapt to on-site installation conditions.

• VEGASON 61 and 62 use standard threaded connections (G/NPT specifications), suitable for storage tank installation in general industrial environments (e.g., machinery manufacturing, metallurgy), with low installation cost and strong versatility.
• The hygienic connection of VEGASON 63 is a "special design" that requires use with hygienic piping. Although installation cost is slightly higher, it meets FDA, 3A, and other hygiene certification requirements, making it a "must-have choice" for the food and pharmaceutical industries.

3. Selection Guide: Four Steps to Lock in the Optimal Model

Selection does not require complex calculations; simply follow the four-step path of "confirm range → evaluate environment → determine accuracy → match interface" to quickly lock in the suitable model.

Step 1: Confirm Measurement Range (Core Prerequisite)

Select the range based on the "actual height" of the on-site container, with a recommended 10%-20% redundancy.

1. Liquid ≤5 m, solid ≤2 m → prioritize VEGASON 61;
2. Liquid 5-8 m, solid 2-3.5 m → prioritize VEGASON 62;
3. Liquid >8 m, solid >3.5 m → must use VEGASON 63.

Step 2: Evaluate Process Environment (Elimination Method)

Eliminate unsuitable models based on industry characteristics.

• If in food, beverage, or pharmaceutical industry → directly lock onto VEGASON 63 (hygienic connection is essential);
• If in general industrial environment (e.g., chemical, machinery) → further screen among 61, 62, and 63.

Step 3: Determine Accuracy Requirements (Precise Matching)

Select accuracy based on control objectives.

• If "precise control" is needed (e.g., quantitative production) → only choose VEGASON 62;
• If only "level monitoring" is needed → choose 61 or 63 (based on range).

Step 4: Match Output and Interface (Ensure Compatibility)

All three instruments support common industrial signals such as 4-20mA/HART, Profibus PA, Foundation Fieldbus, so there is no need to worry about compatibility with the control system. Just confirm whether the process connection matches the on-site piping (e.g., standard thread or hygienic clamp).

4. Selection Precautions: Avoiding "Hidden Risks"

In addition to the above core steps, attention should be paid to the following "hidden factors" to ensure long-term stable operation of the instrument.

• Medium characteristics: Ultrasonic measurement relies on "signal reflection" and is not affected by dielectric constant, but scenarios with "strong foam" or "excessive dust concentration" should be avoided (e.g., large amounts of foam in beer fermentation tanks may weaken the signal). If such conditions exist, communicate with the VEGA technical team in advance to choose a matching signal enhancement solution.
• Process conditions: Confirm whether the on-site temperature (standard range for all three instruments is -40°C to 80°C) and pressure (-0.2 to 2 bar) are within the instrument's tolerance range. Extreme conditions (e.g., high temperature and high pressure) require customized special versions.
• Installation environment: Avoid installing the instrument in positions prone to "false echoes" such as "directly above the agitator" or "at container corners." If there are obstacles in the container, the "false echo suppression function" of the VEGASON series can be used for pre-debugging.
• Certification requirements: Explosion-proof environments (e.g., chemical workshops) require models with ATEX, IECEx certification; hygienic scenarios require confirmation of compliance with 3A, FDA certification. All three instruments offer multiple certification options, which need to be clarified in advance.

5. Summary: Select as Needed, Reject "Over-Configuration"

• For "basic measurement + low cost" needs → choose VEGASON 61;
• For "medium range + high precision control" needs → choose VEGASON 62;
• For "large range + hygienic scenarios" needs → choose VEGASON 63.

Finally, note: The above analysis is based on VEGA's public technical information. For specific working conditions (e.g., special media, extreme environments), it is recommended to contact VEGA or authorized agents directly to obtain a precise selection plan through "working condition simulation," avoiding equipment failures caused by "parameter matching but scenario mismatch."